com.esri.arcgis.geodatabase.RasterCatalog
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java.lang.Object
public class RasterCatalog
A collection of raster datasets in a Geodatabase table.
The RasterCatalog was added at ArcGIS 9.0 and is only supported within Personal, File and ArcSDE Geodatabases. Similar to raster catalogs in previous releases, a RasterCatalog manages a set of related raster datasets; their footprints, names, metadata, and any other user defined attributes. Specifically, a RasterCatalog is a custom feature class containing a field of type Raster, and a predefined Shape field of type Geometry. Each raster dataset within a raster catalog corresponds to a feature.
The Raster field can have a spatial reference that is applied to all raster values if the raster itself have an unknown spatial reference, and it is defined using RasterDef. The Shape field stores the footprint of a raster value in a given target spatial reference (equal to the spatial reference of the Shape field). The footprint is automatically managed, populated and spatially indexed by the geodatabase.
The row objects handed out by a raster catalog support the IRow, IObject, IFeature and IRasterCatalogItem interfaces.
IRasterCatalog,
Serialized Form| Constructor Summary | |
|---|---|
RasterCatalog(Object obj)
Construct a RasterCatalog using a reference to such an object returned from ArcGIS Engine or Server. |
|
| Method Summary | |
|---|---|
void |
addField(IField field)
Adds a field to this object class. |
void |
addIndex(IIndex index)
Adds an index to this object class. |
void |
alterAliasName(String name)
The alias name of the object class. |
void |
alterClassExtensionCLSID(IUID classExtensionCLSID,
IPropertySet classExtensionProperties)
Changes the class extension COM class associated with this database class. |
void |
alterClassExtensionProperties(IPropertySet classExtensionProperties)
Changes the class extension properties associated with this object class. |
void |
alterDefaultValue(String fieldName,
Object value)
The default value of the object class field. |
void |
alterDomain(String fieldName,
IDomain domain)
The default domain of the object class field. |
void |
alterFieldAliasName(String fieldName,
String aliasName)
The alias name of the object class field. |
void |
alterFieldModelName(String fieldName,
String modelName)
The model name of the object class field. |
void |
alterInstanceCLSID(IUID instanceCLSID)
Changes the instance COM class associated with this database class. |
void |
alterModelName(String name)
The model name of the object class. |
void |
alterRasterSpatialReference(ISpatialReference spatialReference)
Alters the default Raster field spatial reference. |
void |
analyze(int tableComponents)
Analyze the data to update/generate DBMS statistics. |
boolean |
canBypassEditSession()
Indicates if updates to objects can be safely made outside of an edit session. |
boolean |
canBypassStoreMethod()
Indicates if updates to objects can bypass the Store method and OnChange notifications for efficiency. |
boolean |
canCopy()
True if this dataset can be copied. |
boolean |
canDelete()
True if this dataset can be deleted. |
boolean |
canRename()
True if this dataset can be renamed. |
void |
changeSchemaLock(int schemaLock)
Changes a schema lock. |
IDataset |
copy(String copyName,
IWorkspace copyWorkspace)
Copies this dataset to a new dataset with the specified name. |
IFeature |
createFeature()
Create a new feature, with a system assigned object ID and null property values. |
IFeatureBuffer |
createFeatureBuffer()
Create a feature buffer that can be used with an insert cursor. |
IRow |
createRow()
Creates a row in the database with a system assigned object ID and null property values. |
IRowBuffer |
createRowBuffer()
Creates a row buffer that can be used with an insert cursor. |
void |
delete()
Deletes this dataset. |
void |
deleteField(IField field)
Deletes a field from this object class. |
void |
deleteIndex(IIndex index)
Deletes an index from this object class. |
void |
deleteSearchedRows(IQueryFilter queryFilter)
Delete the Rows in the database selected by the specified query. |
boolean |
equals(Object o)
Compare this object with another |
int |
featureCount(IQueryFilter queryFilter)
The number of features selected by the specified query. |
int |
findField(String name)
The index of the field with the specified name. |
String |
getAliasName()
The alias name of the object class. |
int |
getAllowableComponents()
The allowable components to be analyzed. |
IField |
getAreaField()
The geometry area field. |
String |
getBrowseName()
The browse name of the dataset. |
String |
getCategory()
The category of the dataset. |
IUID |
getCLSID()
The GUID for the COM Class (CoClass) corresponding to instances of this object class. |
void |
getCurrentSchemaLocks(IEnumSchemaLockInfo[] schemaLockInfo)
The list of current locks. |
IUID |
getEXTCLSID()
The GUID for the COM Class (CoClass) corresponding to the class extension for this object class. |
Object |
getExtension()
The extension for this object class. |
IPropertySet |
getExtensionProperties()
The extension properties for this object class. |
IEnvelope |
getExtent()
The extent of the GeoDataset. |
IFeature |
getFeature(int iD)
Get the feature with the specified object ID. |
int |
getFeatureClassID()
The unique ID for the Feature Class. |
IFeatureDataset |
getFeatureDataset()
The feature dataset that contains the feature class. |
IFeatureCursor |
getFeatures(Object fids,
boolean recycling)
Deprecated. This method uses C style arrays which are not supported in the ArcGIS API for Java. It is replaced by GeoDatabaseHelper.getFeatures(com.esri.arcgis.geodatabase.IFeatureClass, int[], boolean). |
int |
getFeatureType()
The type of features in this feature class. |
IFields |
getFields()
The fields collection for this object class. |
IName |
getFullName()
The associated name object. |
IIndexes |
getIndexes()
The indexes collection for this object class. |
IField |
getLengthField()
The geometry length field. |
String |
getModelName()
The model name of the field. |
String |
getName()
The name of the Dataset. |
int |
getNameFieldIndex()
The index of Name field. |
int |
getObjectClassID()
The unique ID for the object class. |
String |
getOIDFieldName()
The name of the field corresponding to the OID. |
IPropertySet |
getPropertySet()
The set of properties for the dataset. |
int |
getRasterFieldIndex()
The index of the default Raster field. |
String |
getRasterFieldName()
The name of the default Raster field. |
ISpatialReference |
getRasterSpatialReference()
The default Raster field spatial reference. |
IEnumRelationshipClass |
getRelationshipClasses(int role)
The relationship classes in which this object class participates in for the specified role. |
IRow |
getRow(int oID)
The row from the database with the specified object ID. |
ICursor |
getRows(Object oids,
boolean recycling)
The cursor of rows based on a set of object ids. |
String |
getShapeFieldName()
The name of the default sShape field. |
int |
getShapeType()
The type of the default Shape for the features in this feature class. |
ISpatialReference |
getSpatialReference()
The spatial reference of the GeoDataset. |
IEnumDataset |
getSubsets()
Datasets contained within this dataset. |
int |
getType()
The type of the Dataset. |
IWorkspace |
getWorkspace()
The workspace containing this dataset. |
int |
hashCode()
the hashcode for this object |
IFeatureCursor |
IFeatureClass_insert(boolean useBuffering)
Returns a cursor that can be used to insert new features. |
IFeatureCursor |
IFeatureClass_update(IQueryFilter filter,
boolean recycling)
Returns a cursor that can be used to update features selected by the specified query. |
ICursor |
insert(boolean useBuffering)
Returns a cursor that can be used to insert new Rows. |
boolean |
isBeingEdited()
True if the dataset is being edited. |
boolean |
isCanAlterRasterSpatialReference()
Indicates if the default Raster field spatial reference can be altered. |
boolean |
isCanEdit()
True if the dataset supports edit sessions with the ability to discard edits on save. |
boolean |
isCanRedo()
True if the dataset supports edit sessions with the ability to redo undone operations. |
boolean |
isCanSelect()
Indicates if the table supports selection. |
boolean |
isCanUndo()
True if the dataset supports edit sessions with the ability to undo individual edit operations. |
boolean |
isHasOID()
Indicates if the class has an object identity (OID) field. |
boolean |
isLoadOnlyMode()
Indicates if the featureclass is in load only mode. |
ICursor |
ITable_search(IQueryFilter queryFilter,
boolean recycling)
An object cursor that can be used to fetch row objects selected by the specified query. |
int |
registerAsObjectClass(String suggestedOIDFieldName,
String configKeyword)
Registers this class with the database, assigning it a class id and creating an object id column. |
void |
removeFeature(IFeature feature)
Deletes a feature from the database, does not trigger OnDelete event. |
void |
removeFeatures(ISet features)
Deletes a set of features from the database, does not trigger OnDelete events. |
void |
rename(String name)
Renames this Dataset. |
int |
rowCount(IQueryFilter queryFilter)
The number of Rows selected by the specified query. |
IFeatureCursor |
search(IQueryFilter filter,
boolean recycling)
Returns an object cursor that can be used to fetch feature objects selected by the specified query. |
ISelectionSet |
select(IQueryFilter queryFilter,
int selType,
int selOption,
IWorkspace selectionContainer)
A selection that contains the object ids selected by the specified query. |
void |
setBrowseName(String name)
The browse name of the dataset. |
void |
setLoadOnlyMode(boolean isInLoadMode)
Indicates if the featureclass is in load only mode. |
void |
setModelName(String name)
The model name of the field. |
ICursor |
update(IQueryFilter queryFilter,
boolean recycling)
Returns a cursor that can be used to update Rows selected by the specified query. |
void |
updateExtent()
Updates the XY, M, Z extent. |
void |
updateSearchedRows(IQueryFilter queryFilter,
IRowBuffer buffer)
Update the Rows in the database selected by the specified query. |
void |
writeFeature(IFeature feature)
Stores a feature to the database, does not trigger OnStore event. |
void |
writeFeatures(ISet features)
Stores a set of features to the database, does not trigger OnStore events. |
| Methods inherited from class java.lang.Object |
|---|
clone, finalize, getClass, notify, notifyAll, toString, wait, wait, wait |
| Methods inherited from interface com.esri.arcgis.interop.RemoteObjRef |
|---|
getJintegraDispatch, release |
| Constructor Detail |
|---|
public RasterCatalog(Object obj)
throws IOException
obj to RasterCatalog. *
RasterCatalog o = (RasterCatalog)obj; // will not work
RasterCatalog o = new RasterCatalog(obj); // Use this constructor instead
* @param obj an object returned from ArcGIS Engine or Server
IOException - if there are interop problems
RasterCatalog theRasterCatalog = (RasterCatalog) obj;| Method Detail |
|---|
public boolean equals(Object o)
equals in class Objectpublic int hashCode()
hashCode in class Object
public String getName()
throws IOException,
AutomationException
getName in interface IDatasetIOException - If there are interop problems.
AutomationException - If the ArcObject component throws an exception.
public IName getFullName()
throws IOException,
AutomationException
getFullName in interface IDatasetIOException - If there are interop problems.
AutomationException - If the ArcObject component throws an exception.
public String getBrowseName()
throws IOException,
AutomationException
getBrowseName in interface IDatasetIOException - If there are interop problems.
AutomationException - If the ArcObject component throws an exception.
public void setBrowseName(String name)
throws IOException,
AutomationException
setBrowseName in interface IDatasetname - The name (in)
IOException - If there are interop problems.
AutomationException - If the ArcObject component throws an exception.
public int getType()
throws IOException,
AutomationException
// Assume we have a reference to an IfeatureClass (pFeatureClass) IDataset pDataset = null;
pDataset = new IDatasetProxy(pFeatureClass);
System.out.println(pDataset.getName() + " " + pDataset.getType());
if(pFeatureClass != null){
pDataset = pFeatureClass.getFeatureDataset();
System.out.println(pDataset.getName() + " " + pDataset.getType());
}
pDataset = new IDatasetProxy(pDataset.getWorkspace());
System.out.println(pDataset.getName() + " " +
pDataset.getType());
getType in interface IDatasetIOException - If there are interop problems.
AutomationException - If the ArcObject component throws an exception.
public String getCategory()
throws IOException,
AutomationException
IDataset::Category returns a description of the category of the dataset. The description returned from the Category property is the same value that is displayed in the Type column within the Contents tab in ArcCatalog. The value will contain a description of the dataset such as "Topology" prefixed with a description of the type of workspace containing the dataset such as "File Geodatabase".
The description returned from IDataset::Category may change between releases of ArcGIS. In addition to this, returned strings are localized, meaning that code relying on a specific string being provided may fail when deployed with a different version of ArcGIS than it was developed with, or when deployed to a client using a different language than it was developed with.
getCategory in interface IDatasetIOException - If there are interop problems.
AutomationException - If the ArcObject component throws an exception.
public IEnumDataset getSubsets()
throws IOException,
AutomationException
The Subsets property returns other Dataset objects contained in this dataset.
IDataset::Subsets is not supported for Graph objects such as a Geometric Network. To return the feature classes contained in a Geometric Network, use the IFeatureClassContainer interface.
getSubsets in interface IDatasetIOException - If there are interop problems.
AutomationException - If the ArcObject component throws an exception.
public IWorkspace getWorkspace()
throws IOException,
AutomationException
The Workspace property returns the containing workspace for this dataset.
getWorkspace in interface IDatasetIOException - If there are interop problems.
AutomationException - If the ArcObject component throws an exception.
public IPropertySet getPropertySet()
throws IOException,
AutomationException
The PropertySet property is used to return any additional intrinsic properties (but not metadata properties) that may apply to the dataset. One use of this property is to distinguish between the types of File Geodatabase datafile formats. If called on a Feature Class or Table in a File Geodatabase the Datafile Format property can either be esriFGDBStandardDatafile or esriFGDBCompressedDatafile.
Most datasets do not implement this property and will either raise an error or return a null value if it's called. There are a handful of exceptions that will return property sets; these include the datasets from file geodatabases (as mentioned above) and coverages.
Examples of intrinsic properties for which explicit methods exist include the SpatialReference and the Extent methods available on the IGeoDataset interface. In most cases this PropertySet will be empty.
IDataset::PropertySet is not supported for Graph objects such as a Geometric Network.
getPropertySet in interface IDatasetIOException - If there are interop problems.
AutomationException - If the ArcObject component throws an exception.
public boolean canCopy()
throws IOException,
AutomationException
The CanCopy, CanDelete, and CanRename properties are meant to be used in conjunction with the Copy, Delete, and Rename methods and signify whether a dataset is supported by these methods. For example, you may not delete a network feature class nor can you use the Copy method on a Geodatabase feature class. To copy Geodatabase datasets, including feature classes, geometric networks, topologies, etc., use the IGeoDBDataTransfer interface.
The CanCopy method is supported by:
canCopy in interface IDatasetIOException - If there are interop problems.
AutomationException - If the ArcObject component throws an exception.
public IDataset copy(String copyName,
IWorkspace copyWorkspace)
throws IOException,
AutomationException
IDataset::Copy should only be used with datasets from file-based data sources, such as shapefiles and coverages.
copy in interface IDatasetcopyName - The copyName (in)copyWorkspace - A reference to a com.esri.arcgis.geodatabase.IWorkspace (in)
IOException - If there are interop problems.
AutomationException - If the ArcObject component throws an exception.
public boolean canDelete()
throws IOException,
AutomationException
The CanCopy, CanDelete, and CanRename properties are meant to be used in conjunction with the Copy, Delete, and Rename methods and signify whether a dataset is supported by these methods. For example, you may not delete a network feature class nor can you use the Copy method on a Geodatabase feature class. To copy Geodatabase datasets, including feature classes, geometric networks, topologies, etc., use the IGeoDBDataTransfer interface.
canDelete in interface IDatasetIOException - If there are interop problems.
AutomationException - If the ArcObject component throws an exception.
public void delete()
throws IOException,
AutomationException
Certain feature classes, such as network and topology feature classes, cannot be deleted until their containing objects are deleted.
delete in interface IDatasetIOException - If there are interop problems.
AutomationException - If the ArcObject component throws an exception.
public boolean canRename()
throws IOException,
AutomationException
The CanCopy, CanDelete, and CanRename properties are meant to be used in conjunction with the Copy, Delete, and Rename methods and signify whether a dataset is supported by these methods. For example, you may not delete or rename a network feature class nor can you use the Copy method on a Geodatabase feature class. To copy Geodatabase datasets, including feature classes, geometric networks, topologies, etc., use the IGeoDBDataTransfer interface.
canRename in interface IDatasetIOException - If there are interop problems.
AutomationException - If the ArcObject component throws an exception.
public void rename(String name)
throws IOException,
AutomationException
IDataset::Rename does not support the renaming of Graph objects such as a Geometric Network. In addition, certain feature classes, such as network feature classes, cannot be renamed.
rename in interface IDatasetname - The name (in)
IOException - If there are interop problems.
AutomationException - If the ArcObject component throws an exception.
public boolean isBeingEdited()
throws IOException,
AutomationException
Once an edit session has been started on a workspace, the IsBeingEdited method on the IDatasetEdit interface can be used to determine if a particular dataset is participating in the edit session.
The reasons why a dataset may not participate include the connected user has no privileges or permission to edit the dataset, the connected user is not licensed to edit this type of dataset, or the dataset is not versioned but a versioned edit session has been started (or vice versa).
isBeingEdited in interface IDatasetEditIOException - If there are interop problems.
AutomationException - If the ArcObject component throws an exception.
public boolean isCanEdit()
throws IOException,
AutomationException
This property is to be used within an active edit session, results cannot be guaranteed if called on a dataset outside of an edit session.
isCanEdit in interface IDatasetEditInfoIOException - If there are interop problems.
AutomationException - If the ArcObject component throws an exception.
public boolean isCanUndo()
throws IOException,
AutomationException
isCanUndo in interface IDatasetEditInfoIOException - If there are interop problems.
AutomationException - If the ArcObject component throws an exception.
public boolean isCanRedo()
throws IOException,
AutomationException
isCanRedo in interface IDatasetEditInfoIOException - If there are interop problems.
AutomationException - If the ArcObject component throws an exception.
public void analyze(int tableComponents)
throws IOException,
AutomationException
When applied to a feature dataset, Analyze updates the statistics for all of the tables.
analyze in interface IDatasetAnalyzetableComponents - The tableComponents (in)
IOException - If there are interop problems.
AutomationException - If the ArcObject component throws an exception.
public int getAllowableComponents()
throws IOException,
AutomationException
The AllowableComponents property indicates which parts of the table or feature class can be analyzed. The returned value is based on the esriTableComponents enumeration. Members from this enumeration can be bitwise or’d together.
getAllowableComponents in interface IDatasetAnalyzeIOException - If there are interop problems.
AutomationException - If the ArcObject component throws an exception.
public void changeSchemaLock(int schemaLock)
throws IOException,
AutomationException
changeSchemaLock in interface ISchemaLockschemaLock - A com.esri.arcgis.geodatabase.esriSchemaLock constant (in)
IOException - If there are interop problems.
AutomationException - If the ArcObject component throws an exception.
public void getCurrentSchemaLocks(IEnumSchemaLockInfo[] schemaLockInfo)
throws IOException,
AutomationException
The ISchemaLockInfo interface is used in concert with ISchemaLock to provide information about a schema lock, for example, whether it is shared or exclusive and for ArcSDE geodatabases, the name of the user who has the lock. Note that there will always be at least one schema lock on the dataset. Also note that by checking the schema locks on a dataset a shared schema lock is applied to the data.
getCurrentSchemaLocks in interface ISchemaLockschemaLockInfo - A reference to a com.esri.arcgis.geodatabase.IEnumSchemaLockInfo (out: use single element array)
IOException - If there are interop problems.
AutomationException - If the ArcObject component throws an exception.
public int findField(String name)
throws IOException,
AutomationException
If FindField returns -1, the Field could not be found in the Fields collection.
Developers working with SDE should be aware of qualified field names and their impact on calls to FindField. For more information, see the IFields2 interface.
findField in interface IClassname - The name (in)
IOException - If there are interop problems.
AutomationException - If the ArcObject component throws an exception.
public IFields getFields()
throws IOException,
AutomationException
getFields in interface IClassIOException - If there are interop problems.
AutomationException - If the ArcObject component throws an exception.
public IIndexes getIndexes()
throws IOException,
AutomationException
getIndexes in interface IClassIOException - If there are interop problems.
AutomationException - If the ArcObject component throws an exception.
public void addField(IField field)
throws IOException,
AutomationException
Prior to adding a new field to a class, an exclusive schema lock should be obtained using the ISchemaLock interface.
Attempting to add a new field that does not allow null values will fail, if the class already has data in it. The only solution is to recreate the class with the non-nullable field, then copy the rows from the original class into the new class.
addField in interface IClassfield - A reference to a com.esri.arcgis.geodatabase.IField (in)
IOException - If there are interop problems.
AutomationException - If the ArcObject component throws an exception.
public void deleteField(IField field)
throws IOException,
AutomationException
DeleteField removes the specified field from a table, object class or feature class. Fields that are required by the Geodatabase and cannot be removed include:
Prior to deleting a field from a class, an exclusive schema lock should be obtained using the ISchemaLock interface.
// Assume we have a reference to a FeatureClass (pFC) IFields pFields; IField pField; pFields = pFC.getFields(); pField = pFields.getField(pFields.findField("MyField")); pFC.deleteField(pField);
deleteField in interface IClassfield - A reference to a com.esri.arcgis.geodatabase.IField (in)
IOException - If there are interop problems.
AutomationException - If the ArcObject component throws an exception.
public void addIndex(IIndex index)
throws IOException,
AutomationException
Prior to adding a new index to a class, an exclusive schema lock should be obtained using the ISchemaLock interface.
addIndex in interface IClassindex - A reference to a com.esri.arcgis.geodatabase.IIndex (in)
IOException - If there are interop problems.
AutomationException - If the ArcObject component throws an exception.
public void deleteIndex(IIndex index)
throws IOException,
AutomationException
Prior to deleting an index from a class, an exclusive schema lock should be obtained using the ISchemaLock interface.
deleteIndex in interface IClassindex - A reference to a com.esri.arcgis.geodatabase.IIndex (in)
IOException - If there are interop problems.
AutomationException - If the ArcObject component throws an exception.
public boolean isHasOID()
throws IOException,
AutomationException
isHasOID in interface IClassIOException - If there are interop problems.
AutomationException - If the ArcObject component throws an exception.
public String getOIDFieldName()
throws IOException,
AutomationException
getOIDFieldName in interface IClassIOException - If there are interop problems.
AutomationException - If the ArcObject component throws an exception.
public IUID getCLSID()
throws IOException,
AutomationException
getCLSID in interface IClassIOException - If there are interop problems.
AutomationException - If the ArcObject component throws an exception.
public IUID getEXTCLSID()
throws IOException,
AutomationException
getEXTCLSID in interface IClassIOException - If there are interop problems.
AutomationException - If the ArcObject component throws an exception.
public Object getExtension()
throws IOException,
AutomationException
getExtension in interface IClassIOException - If there are interop problems.
AutomationException - If the ArcObject component throws an exception.
public IPropertySet getExtensionProperties()
throws IOException,
AutomationException
getExtensionProperties in interface IClassIOException - If there are interop problems.
AutomationException - If the ArcObject component throws an exception.
public IRow createRow()
throws IOException,
AutomationException
The CreateRow method creates a new row in the underlying database with a system assigned object id value. A row object representing the created row is returned to the caller. The row object returned has the system assigned object ID as the value of the OIDField. All other fields are initialized to null values if they can be made null and to built-in default values appropriate to the type of the field if they cannot be made null.
The caller is responsible for setting the desired field values into the row and calling the Store method on the row. If the table represents an object class with subtypes, then it is the caller’s responsibility to set the default subtype code into the row and call the InitDefaultValues method on the row before storing, if that is the desired result. For tables without object behavior, insert cursors offer a more efficient way for inserting new rows.
createRow in interface ITableIOException - If there are interop problems.
AutomationException - If the ArcObject component throws an exception.
public IRow getRow(int oID)
throws IOException,
AutomationException
The GetRow method returns an existing row object, given its object ID value. The caller can query the returned row object for additional object specific interfaces. The retrieved row may be modified; calling Store on the row object after changing it will trigger messages to related objects and will mark the row for committing to the database.
getRow in interface ITableoID - The oID (in)
IOException - If there are interop problems.
AutomationException - If the ArcObject component throws an exception.
public ICursor getRows(Object oids,
boolean recycling)
throws IOException,
AutomationException
The GetRows method returns a cursor that may be used to retrieve a set of rows specified by the input array of object id values. See the description of the Search method to understand the meaning of the recycling parameter. It is far more efficient to retrieve a set of rows using the GetRows method than it is to retrieve each individual row using the GetRow method. The retrieved rows may be modified; Store should be called on the row objects after changing them.
The oids parameter should be passed an integer array. For example:
// Get a recycling cursor for the OID array.
int[] oids = new int[] { 10844, 10853, 10871 };
ICursor cursor = table.getRows(oids, true);
getRows in interface ITableoids - A Variant (in)recycling - The recycling (in)
IOException - If there are interop problems.
AutomationException - If the ArcObject component throws an exception.
public IRowBuffer createRowBuffer()
throws IOException,
AutomationException
The CreateRowBuffer method creates a new row buffer object in memory and returns it to the caller. No row is created in the database. The returned row buffer does not have an object ID value. The caller can set values into the row buffer and use it as an argument to the InsertRow method on an insert cursor; the latter is obtained by calling the Insert method on the Table.
createRowBuffer in interface ITableIOException - If there are interop problems.
AutomationException - If the ArcObject component throws an exception.
public void updateSearchedRows(IQueryFilter queryFilter,
IRowBuffer buffer)
throws IOException,
AutomationException
This method will edit the rows matching the query filter's constraints. The values in each row will be replaced with the corresponding field's value in the provided row buffer. The fields being edited should be specified in the query filter's SubFields property. If the row buffer contains null values, and the SubFields property is not properly set, the row's values will be overwritten with the row buffer's null values.
updateSearchedRows in interface ITablequeryFilter - A reference to a com.esri.arcgis.geodatabase.IQueryFilter (in)buffer - A reference to a com.esri.arcgis.geodatabase.IRowBuffer (in)
IOException - If there are interop problems.
AutomationException - If the ArcObject component throws an exception.
public void deleteSearchedRows(IQueryFilter queryFilter)
throws IOException,
AutomationException
deleteSearchedRows in interface ITablequeryFilter - A reference to a com.esri.arcgis.geodatabase.IQueryFilter (in)
IOException - If there are interop problems.
AutomationException - If the ArcObject component throws an exception.
public int rowCount(IQueryFilter queryFilter)
throws IOException,
AutomationException
rowCount in interface ITablequeryFilter - A reference to a com.esri.arcgis.geodatabase.IQueryFilter (in)
IOException - If there are interop problems.
AutomationException - If the ArcObject component throws an exception.
public ICursor ITable_search(IQueryFilter queryFilter,
boolean recycling)
throws IOException,
AutomationException
ITable_search in interface ITablequeryFilter - A reference to a com.esri.arcgis.geodatabase.IQueryFilter (in)recycling - The recycling (in)
IOException - If there are interop problems.
AutomationException - If the ArcObject component throws an exception.
public ICursor update(IQueryFilter queryFilter,
boolean recycling)
throws IOException,
AutomationException
The Update method returns an update cursor that can be used to update or delete rows. It offers somewhat faster performance than multiple calls to Store or Delete on row objects fetched using a non-recycling search cursor for tables storing simple rows and simple features. There is no difference in performance for complex objects and features.
When using cursors within an edit session, they should always be scoped to edit operations. In other words, a cursor should be created after an edit operation has begun and should not be used once that edit operation has been stopped or aborted.
update in interface ITablequeryFilter - A reference to a com.esri.arcgis.geodatabase.IQueryFilter (in)recycling - The recycling (in)
IOException - If there are interop problems.
AutomationException - If the ArcObject component throws an exception.
public ICursor insert(boolean useBuffering)
throws IOException,
AutomationException
The Insert method returns an insert cursor that can be used to bulk insert rows. It offers significantly faster performance than multiple calls to CreateRow and Store for tables storing simple rows and simple features (that is, for tables whose CLSID is esriGeoDatabase.Row, esriGeoDatabase.Object, or esriGeoDatabase.Feature).
Insert cursors on tables containing complex objects use the CreateRow and Store methods to achieve polymorphism, and there is no difference in performance in these cases.
When using cursors within an edit session, they should always be scoped to edit operations. In other words, a cursor should be created after an edit operation has begun and should not be used once that edit operation has been stopped or aborted.
insert in interface ITableuseBuffering - The useBuffering (in)
IOException - If there are interop problems.
AutomationException - If the ArcObject component throws an exception.
public ISelectionSet select(IQueryFilter queryFilter,
int selType,
int selOption,
IWorkspace selectionContainer)
throws IOException,
AutomationException
The Select method returns a selection set that holds either row IDs or row objects from the Table depending on the selection option. Multiple selection sets can be created on the same table. It is up to a client application or object to keep a reference on created selections and use them as appropriate. For example, a FeatureLayer creates and uses selections on a FeatureClass (a type of Table).
The selType parameter determines the type of selection set that will be created: an ID set, a snapshot, or a hybrid. See the ISelectionSet interface for a comparison of the three types.
When calling Select the selectionContainer parameter is no longer required. A null value should be passed as this parameter.
select in interface IFeatureClassselect in interface ITablequeryFilter - A reference to a com.esri.arcgis.geodatabase.IQueryFilter (in)selType - A com.esri.arcgis.geodatabase.esriSelectionType constant (in)selOption - A com.esri.arcgis.geodatabase.esriSelectionOption constant (in)selectionContainer - A reference to a com.esri.arcgis.geodatabase.IWorkspace (in)
IOException - If there are interop problems.
AutomationException - If the ArcObject component throws an exception.IQueryFilter
public int getObjectClassID()
throws IOException,
AutomationException
Returns the unique ID of the object class.
Each feature class or table registered with the geodatabase is an object class. Object classes have a unique ID which distinguishes them from other object classes in the geodatabase. The ObjectClassID property returns this ID as a long. The object class ID is assigned by the system when the class is created, or registered with the geodatabase, it cannot be modified.
Those feature classes and tables that are in the database, but not registered with the geodatabase will always have an object class ID of -1.
getObjectClassID in interface IObjectClassIOException - If there are interop problems.
AutomationException - If the ArcObject component throws an exception.
public IEnumRelationshipClass getRelationshipClasses(int role)
throws IOException,
AutomationException
getRelationshipClasses in interface IObjectClassrole - A com.esri.arcgis.geodatabase.esriRelRole constant (in)
IOException - If there are interop problems.
AutomationException - If the ArcObject component throws an exception.
public String getAliasName()
throws IOException,
AutomationException
Returns the alias name for the object class.
Object classes in a geodatabase can have between one and three names. The name of the object class, which is the same as the name of the table in the DBMS in which the objects in the object class are stored, the alias name which the user can set for display purposes in end user applications. The third name is the model name which is a tool for developers of custom objects to use to guarantee the names of objects independent of the true name or alias name.
The AliasName property returns the alias name for the object class. If the object class has no alias name, then AliasName will return the name of the object class (fully qualified if on ArcSDE). The alias name can be modified using the IClassSchemEdit interface.
getAliasName in interface IObjectClassIOException - If there are interop problems.
AutomationException - If the ArcObject component throws an exception.
public int registerAsObjectClass(String suggestedOIDFieldName,
String configKeyword)
throws IOException,
AutomationException
The RegisterAsObjectClass method will register a table or feature class (ArcSDE layer) in the database with the Geodatabase. The act of registering the data as an object class will create records for the object class in the Geodatabase system tables and assign the object class a unique ID. Once a table or SDE layer is registered as an object class, it can participate in rules, topological relationships and relationships.
When registering a table or ArcSDE layer as an object class, an ObjectID field must be added to it. This field will contain the object IDs which uniquely identify each feature in the class. The object IDs for existing data will automatically be generated. Once a table or ArcSDE layer has been registered as an object class in the Geodatabase, it cannot be unregistered.
RegisterAsObjectClass takes two arguments: the name of the object ID field, and the ArcSDE configuration keyword to use for storage of the new data that is inserted into the object ID field. RegisterAsObjectClass returns a long which is the object class ID assigned to the newly registered class.
registerAsObjectClass in interface IClassSchemaEditsuggestedOIDFieldName - The suggestedOIDFieldName (in)configKeyword - The configKeyword (in)
IOException - If there are interop problems.
AutomationException - If the ArcObject component throws an exception.IObjectClass
public void alterInstanceCLSID(IUID instanceCLSID)
throws IOException,
AutomationException
The AlterInstanceCLSID is used to change the behavior class for an object class in the Geodatabase. For example, you may have a class that stores simple feature objects and you want to change it to implement a custom object that you have developed. You use the AlterInstanceCLSID to do so.
AlterInstanceCLSID will try to instantiate the object for the CLSID that you provide. If it fails to instantiate it, the method will fail. Therefore, you must have the DLL which has the implementation of your custom object registered on your system before you call AlterInstanceCLSID.
Before you QI for AlterInstanceCLSID, you will have had to open the object class. So, if this fails because you no longer have the DLL registered on your system, then you must use the IFeatureWorkspaceSchemaEdit interface to alter the instance CLSID.
No additional checking is done beyond instantiating the instance object. If the object class does not have the fields required for supporting the custom object then your class may not function with its new instance CLSID.
alterInstanceCLSID in interface IClassSchemaEditinstanceCLSID - A reference to a com.esri.arcgis.system.IUID (in)
IOException - If there are interop problems.
AutomationException - If the ArcObject component throws an exception.
public void alterClassExtensionCLSID(IUID classExtensionCLSID,
IPropertySet classExtensionProperties)
throws IOException,
AutomationException
The AlterClassExtensionCLSID method is used to change the class extension for an object class in the Geodatabase. For example, you may have a class to which you want to associate a class extension that you have developed. You use the AlterClassExtensionCLSID to do so.
AlterClassExtensionCLSID will try to instantiate the object for the class extension that you provide. If it fails to instantiate it, the method will fail. Therefore, you must have the DLL which has the implementation of your class extension registered on your system before you call AlterClassExtensionCLSID.
Before you QI for AlterClassExtensionCLSID, you will have had to open the object class. So, if this fails because you no longer have the DLL registered on your system for a class extension that is already associated with the class, then you must use the IFeatureWorkspaceSchemaEdit interface to alter the class extension CLSID.
alterClassExtensionCLSID in interface IClassSchemaEditclassExtensionCLSID - A reference to a com.esri.arcgis.system.IUID (in)classExtensionProperties - A reference to a com.esri.arcgis.system.IPropertySet (in)
IOException - If there are interop problems.
AutomationException - If the ArcObject component throws an exception.
public void alterAliasName(String name)
throws IOException,
AutomationException
Alters the alias name for the object class.
Object classes in a Geodatabase can have between one and three names. The name of the object class, which is the same as the name of the table in the DBMS in which the objects in the object class are stored, the alias name which the user can set for display purposes in end user applications. The third name is the model name which is a tool for developers of custom objects to use to guarantee the names of objects independent of the true name or alias name.
The AlterAliasName method sets the alias name for the object class. The alias name can be returned using the IObjectClass interface.
alterAliasName in interface IClassSchemaEditname - The name (in)
IOException - If there are interop problems.
AutomationException - If the ArcObject component throws an exception.IObjectClass
public void alterFieldAliasName(String fieldName,
String aliasName)
throws IOException,
AutomationException
Alters the alias name for a field in the object class.
Fields in object classes in a Geodatabase can have between one and three names. The name of the field, which is the same as the name of the field in the table in the DBMS in which the objects in the object class are stored, the alias name which the user can set for display purposes in end user applications. The third name is the model name which is a tool for developers of custom objects to use to guarantee the names of fields independent of the true name or alias name.
The AlterFieldAliasName method sets the alias name for a field in the object class. The alias name can be returned using the IField interface.
alterFieldAliasName in interface IClassSchemaEditfieldName - The fieldName (in)aliasName - The aliasName (in)
IOException - If there are interop problems.
AutomationException - If the ArcObject component throws an exception.IField
public void alterModelName(String name)
throws IOException,
AutomationException
Alters the model name for the object class.
Object classes in a Geodatabase can have between one and three names. The name of the object class, which is the same as the name of the table in the DBMS in which the objects in the object class are stored, the alias name which the user can set for display purposes in end user applications. The third name is the model name which is a tool for developers of custom objects to use to guarantee the names of objects independent of the true name or alias name.
The AlterModelName method sets the model name for the object class. The model name can be returned using the IModelInfo interface.
alterModelName in interface IClassSchemaEditname - The name (in)
IOException - If there are interop problems.
AutomationException - If the ArcObject component throws an exception.
public void alterFieldModelName(String fieldName,
String modelName)
throws IOException,
AutomationException
Alters the model name for a field in the object class.
Fields in object classes in a Geodatabase can have between one and three names. The name of the field, which is the same as the name of the field in the table in the DBMS in which the objects in the object class are stored, the alias name which the user can set for display purposes in end user applications. The third name is the model name which is a tool for developers of custom objects to use to guarantee the names of fields independent of the true name or alias name.
The AlterFieldModelName method sets the model name for a field in the object class. The model name can be returned using the IModelInfo interface.
alterFieldModelName in interface IClassSchemaEditfieldName - The fieldName (in)modelName - The modelName (in)
IOException - If there are interop problems.
AutomationException - If the ArcObject component throws an exception.IField
public void alterDomain(String fieldName,
IDomain domain)
throws IOException,
AutomationException
Domains are used in the Geodatabase to validate the contents of fields in an object class. For example, you can use a domain to specify a valid range of values, or a valid set of values for a particular field in an object class. You can assign domains to a field in an object class at either the class level, or the subtype level. The AlterDomain method on IClassSchemaEdit allows you to set a domain for a field at the class level.
AlterDomain takes as arguments the name of the field you want to associate a domain with as a string, and the domain you are associating as an IDomain. You can get an enumeration of domains in a workspace by calling the Domains or DomainsByFieldType methods on the IWorkspaceDomains interface.
Once a domain is associated with a field in your object class, the values in that field will be validated against that domain when a row in the object class is validated with the IValidate interface, or the Validate Selection command in the Editor.
alterDomain in interface IClassSchemaEditfieldName - The fieldName (in)domain - A reference to a com.esri.arcgis.geodatabase.IDomain (in)
IOException - If there are interop problems.
AutomationException - If the ArcObject component throws an exception.IField
public void alterDefaultValue(String fieldName,
Object value)
throws IOException,
AutomationException
You can assign a default value to a field in an object class at either the class level, or the subtype level. The AlterDefaultValue method on IClassSchemaEdit allows you to set a default value for a field at the class level.
AlterDefaultValue takes as arguments the name of the field you want to associate a default value with as a string, and the default value you are associating as a variant. AlterDefaultValue will fail if the default value cannot be stored in the field.
Once a default value is associated with a field in your object class, you can use the InitDefaultValues method on IRowSubtypes to populate the fields in a object in your object class with its default value. This method is most often called after you have created a new feature or object in the object class, and before storing it.
alterDefaultValue in interface IClassSchemaEditfieldName - The fieldName (in)value - A Variant (in)
IOException - If there are interop problems.
AutomationException - If the ArcObject component throws an exception.IField
public void alterClassExtensionProperties(IPropertySet classExtensionProperties)
throws IOException,
AutomationException
The AlterClassExtensionProperties method is used to change the class extension properties for an object class in the Geodatabase that already has a class extension associated with it.
AlterClassExtensionProperties takes as an argument the new properties for the class extension as an IPropertySet.
alterClassExtensionProperties in interface IClassSchemaEdit2classExtensionProperties - A reference to a com.esri.arcgis.system.IPropertySet (in)
IOException - If there are interop problems.
AutomationException - If the ArcObject component throws an exception.IPropertySet
public String getModelName()
throws IOException,
AutomationException
Returns the model name currently associated with the field or object class.
getModelName in interface IModelInfoIOException - If there are interop problems.
AutomationException - If the ArcObject component throws an exception.IObjectClass,
IField
public void setModelName(String name)
throws IOException,
AutomationException
setModelName in interface IModelInfoname - The name (in)
IOException - If there are interop problems.
AutomationException - If the ArcObject component throws an exception.IObjectClass,
IField
public boolean canBypassStoreMethod()
throws IOException,
AutomationException
CanBypassStoreMethod is a convenience method that returns True if the instances of this object class have no custom behavior associated with creating or updating objects and if the object class does not participate in composite relationship classes or in relationship classes that require object notification. A return value of True implies that insert cursors handed out by the geodatabase will internally bypass the CreateRow and Store mechanisms when creating objects. A return value of False indicates that insert cursors will not bypass custom Store or OnChanged behavior implemented by the custom row object for this class.
By default, this method returns False for custom object classes. The developer of a custom object class can change this behavior by implementing this interface on the class extension associated with the class and returning True for the method.
In addition, a developer can implement this interface on the class extension of a simple class and set this property to False . Doing this will ensure that when features in the class are inserted, updated or deleted by editor tools that use insert and update cursors, such as Planarize, Create Features and the Object Loader do not bypass Store or OnChanged behavior. By default, this property for a simple class is logically True, meaning these tools will not broacast Geodatabase events which in turn are not rebroadcast as editor events (for which a custom editor application may be listening). Set this to False for those classes for which you always want to have these events broadcast. Alternatively, this can be set globally for the entire edit session using the IWorkspaceEditControl interface.
canBypassStoreMethod in interface IObjectClassInfocanBypassStoreMethod in interface IObjectClassInfo2IOException - If there are interop problems.
AutomationException - If the ArcObject component throws an exception.
public boolean canBypassEditSession()
throws IOException,
AutomationException
CanBypassEditSession is a convenience method that returns True if the instances of this object class may be created or updated outside of a Geodatabase edit session (an edit session is started by using the StartEditing method on the IWorkspaceEdit or the StartMultiuserEditing method on the IMultiuserWorkspaceEdit interface).
If True , then applications may update the data in this object class using any of the data updating interfaces and methods described here without starting an edit session. In this case applications are responsible for starting host database transactions as appropriate and for discarding cached object states across transaction boundaries when running on an ArcSDE database.
If False, then applications should always make modifications to the data in this object class within an edit session for correct multi-user behavior and for correct management of database state internally cached by the Geodatabase for the objects in this object class.
This method returns False for network feature classes. By default, this method returns True for non-network custom object classes. The developer of a non-network custom object class can change this behavior by implementing this interface on the class extension associated with the class and returning true for the method.
canBypassEditSession in interface IObjectClassInfo2IOException - If there are interop problems.
AutomationException - If the ArcObject component throws an exception.
public int getShapeType()
throws IOException,
AutomationException
ShapeType returns the basic type of geometry of a shape. For the purposes of using the ShapeType property in deciding how to render/symbolize a layer, only esriGeometryPolyline, esriGeometryPolygon, esriGeometryPoint, esriGeometryMulitpoint, and esriGeometryMultipatch need to be checked. All the other types will report as being one of these five types. The reason is that esriGeometryBezier3Curve or esriGeometryPath, etc. can be segments or parts of another shape.
getShapeType in interface IFeatureClassIOException - If there are interop problems.
AutomationException - If the ArcObject component throws an exception.IFeatureClass.getShapeType(),
esriGeometryType
public int getFeatureType()
throws IOException,
AutomationException
This read-only property returns the feature type for the feature class as an esriFeatureType value. This property can be used to determine if a feature class is of a particular type, in order for the feature class to added to a network or topology, or possibly to skip over the feature class in an enumerator.
getFeatureType in interface IFeatureClassIOException - If there are interop problems.
AutomationException - If the ArcObject component throws an exception.esriFeatureType
public String getShapeFieldName()
throws IOException,
AutomationException
This read-only property returns the name of the geometry field for the feature class.
getShapeFieldName in interface IFeatureClassIOException - If there are interop problems.
AutomationException - If the ArcObject component throws an exception.IPoint,
IPolygon,
IGeometry,
ILine
public IField getAreaField()
throws IOException,
AutomationException
This read-only property returns the name of the field which records the area of each feature. Only feature classes that have a ShapeType of esriGeometryPolygon have an Area field.
A null pointer will be returned if:
getAreaField in interface IFeatureClassIOException - If there are interop problems.
AutomationException - If the ArcObject component throws an exception.IField,
IFields
public IField getLengthField()
throws IOException,
AutomationException
This read-only property returns the name of the field which records the length of each feature. Only feature classes that have a ShapeType of esriGeometryPolygon or esriGeometryPolyLine have a Length field. For Line features, this field records the length of the polyline. For polygon features, this field records the perimeter of the polygon.
A null pointer will be returned if:
getLengthField in interface IFeatureClassIOException - If there are interop problems.
AutomationException - If the ArcObject component throws an exception.IField,
IFields
public IFeatureDataset getFeatureDataset()
throws IOException,
AutomationException
This read-only property returns the IFeatureDataset interface on the feature dataset that this feature class is a memeber of. If the feature class is a stand alone feature class (it does not have a feature dataset), then this function will return a null pointer. A coverage feature class will return the IFeatureDataset interface to the coverage itself. Shapefiles will always return a null pointer.
getFeatureDataset in interface IFeatureClassIOException - If there are interop problems.
AutomationException - If the ArcObject component throws an exception.
public IFeature createFeature()
throws IOException,
AutomationException
CreateFeature will create a new feature for the feature class. The new feature is by default assigned a unique object ID (OID). All other fields are initialized to null values if they can be made null and to built-in default values appropriate to the type of the field if they cannot be made null. Use the IFeature::Store method to actually store this new feature in the database. When working with a versioned feature class, CreateFeature should only be called within an edit session. You can start an edit session by calling IWorkspaceEdit::StartEditing. All edits to features that participate in a Topology or Geometric Network must be performed within an edit session and bracketed within an edit operation.
After calling CreateFeature, the default subtype value is not automatically set nor are default values initialized. For features without a subtype that have defined default values, calling IRowSubtypes::InitDefaultValues will initialize the default values. Use IRowSubtypes::SubtypeCode to set the subtype value for features with subtypes before calling IRowSubtypes::InitDefaultValues to initialize the default values for the particular subtype.
Calling the CreateFeature method on a feature class (via the IFeatureClass interface on the feature class) has the same effect as calling the CreateRow method on the FeatureClass (via the ITable interface on the feature class) except that the IFeatureClass methods return IFeature interfaces on the returned row object.
If multiple features with common attributes are being sequentially created, the CreateFeatureBuffer method, IFeatureCursor.InsertFeature method and IFeatureBuffer interface should be used for better performance.
The basic process to create a new feature is:
1) Create the feature
2) Create the geometry for the feature
3) Store the geometry in the feature
4) Store the feature
createFeature in interface IFeatureClassIOException - If there are interop problems.
AutomationException - If the ArcObject component throws an exception.IFeature,
IFeatureCursor
public IFeature getFeature(int iD)
throws IOException,
AutomationException
GetFeature will return a feature from the feature class with the parameter-specified Object ID (OID). This method is typically used to find a particular feature with a known Object ID. A cursor should be used to iterate through all features in a feature class.
Calling the GetFeature method on a feature class (via the IFeatureClass interface on the feature class) has the same effect as calling the GetRow method on the feature class (via the ITable interface) except that the return value is an IFeature reference, rather than IRow.
getFeature in interface IFeatureClassiD - The iD (in)
IOException - If there are interop problems.
AutomationException - If the ArcObject component throws an exception.IFeature,
IFeatureCursor
public IFeatureCursor getFeatures(Object fids,
boolean recycling)
throws IOException,
AutomationException
GeoDatabaseHelper.getFeatures(com.esri.arcgis.geodatabase.IFeatureClass, int[], boolean).
GetFeatures will return an IFeatureCursor which contains the features from the feature class with the parameter-specified Object IDs (OID). This method can be used to loop through a particular set of features with known Object IDs.
Calling the GetFeatures method from the IFeatureClass interface has the same effect as calling the GetRows method from the ITable interface except that the return value is an IFeatureCursor reference, rather than an ICursor reference.
The fids parameter should be provided with an integer array. If the array contains an invalid Object ID, no error will occur, and no feature will be retrieved for the value.
This method should not be called from .NET or Java applications. Instead, call IGeoDatabaseBridge.GetFeatures.
getFeatures in interface IFeatureClassfids - A Variant (in)recycling - The recycling (in)
IOException - If there are interop problems.
AutomationException - If the ArcObject component throws an exception.IFeature,
IFeatureCursor
public int getFeatureClassID()
throws IOException,
AutomationException
This read-only property will return the unique identifier for this feature class. All feature classes inside Geodatabases have a unique ID. Coverage and Shapefile feature classes do not, so IFeatureClass::FeatureClassID will always return -1 for Coverage and Shapefile feature classes. Since IFeatureClass inherits from IObjectClass, you can also get the feature class ID from IObjectClass:: ObjectClassID.
getFeatureClassID in interface IFeatureClassIOException - If there are interop problems.
AutomationException - If the ArcObject component throws an exception.IObjectClass
public IFeatureBuffer createFeatureBuffer()
throws IOException,
AutomationException
The CreateFeatureBuffer method creates a feature buffer and returns the IFeatureBuffer interface. This can be used to create new features in the feature class with an insert cursor. Like creating a feature with IFeatureClass::CreateFeature, the field values for the new feature must be initialized to some value before it can be stored in the database. All edits to features that participate in a Topology or Geometric Network must be performed within an edit session and bracketed within an edit operation.
Calling the CreateFeatureBuffer method in IFeatureClass has the same effect as calling the CreateRowBuffer interface in ITable except that the IFeatureClass methods return an IFeatureBuffer interface on the created row buffer.
createFeatureBuffer in interface IFeatureClassIOException - If there are interop problems.
AutomationException - If the ArcObject component throws an exception.IFeature,
IFeatureCursor
public int featureCount(IQueryFilter queryFilter)
throws IOException,
AutomationException
FeatureCount returns the number of features that satisfy some attribute and/or spatial query as specified by an IQueryFilter object. If Nothing is supplied for the IQueryFilter, then FeatureCount returns the total number of features in the feature class.
featureCount in interface IFeatureClassqueryFilter - A reference to a com.esri.arcgis.geodatabase.IQueryFilter (in)
IOException - If there are interop problems.
AutomationException - If the ArcObject component throws an exception.In Java, rather than passing Nothing to get the total number of features, you should pass null.
public IFeatureCursor search(IQueryFilter filter,
boolean recycling)
throws IOException,
AutomationException
Search will return an IFeatureCursor with all of the features that satisfy the attribute and/or spatial constraints as specified by an IQueryFilter reference. If a null value is passed to the filter parameter, the feature cursor will return all of the features from the feature class.
The recycling parameter controls row object allocation behavior. Recycling cursors rehydrate a single feature object on each fetch and can be used to optimize read-only access, for example, when drawing. It is illegal to maintain a reference on a feature object returned by a recycling cursor across multiple calls to NextFeature on the cursor. Features returned by a recycling cursor should not be modified. Non-recycling cursors return a separate feature object on each fetch. The features returned by a non-recycling cursor may be modified and stored with polymorphic behavior.
The Geodatabase guarantees "unique instance semantics" on non-recycling feature objects fetched during an edit session. In other words, if the feature retrieved by a search cursor has already been instantiated and is being referenced by the calling application, then a reference to the existing feature object is returned.
Non-recycling feature cursors returned from the Search method *MUST* be used when copying features from the cursor into an insert cursor of another class. This is because a recycling cursor reuses the same geometry and under some circumstances all of the features inserted into the insert cursor may have the same geometry. Using a non-recycling cursor ensures that each geometry is unique.
Existing rows can be edited with either a search cursor or an update cursor. When using a search cursor, NextRow is called, returning a reference to a row. The row is edited, and IRow.Store is called. When using an update cursor, NextRow is called, the row is edited, and ICursor.UpdateRow is called with the row as a parameter. It is important to remember, when using an update cursor, do not call the Store method.
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|
ArcMap |
Engine - Simple |
Engine - Complex |
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Inside edit sessions |
Search Cursor |
Search Cursor |
Search Cursor |
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Outside edit sessions |
Search Cursor |
Update Cursor |
Search Cursor |
When using cursors within an edit session, they should always be scoped to edit operations. In other words, a cursor should be created after an edit operation has begun and should not be used once that edit operation has been stopped or aborted.
search in interface IFeatureClassfilter - A reference to a com.esri.arcgis.geodatabase.IQueryFilter (in)recycling - The recycling (in)
IOException - If there are interop problems.
AutomationException - If the ArcObject component throws an exception.IQueryFilter
public IFeatureCursor IFeatureClass_update(IQueryFilter filter,
boolean recycling)
throws IOException,
AutomationException
IFeatureClass_update in interface IFeatureClassfilter - A reference to a com.esri.arcgis.geodatabase.IQueryFilter (in)recycling - The recycling (in)
IOException - If there are interop problems.
AutomationException - If the ArcObject component throws an exception.
public IFeatureCursor IFeatureClass_insert(boolean useBuffering)
throws IOException,
AutomationException
IFeatureClass_insert in interface IFeatureClassuseBuffering - The useBuffering (in)
IOException - If there are interop problems.
AutomationException - If the ArcObject component throws an exception.
public ISpatialReference getSpatialReference()
throws IOException,
AutomationException
This property is read only. For layers, when the first layer is added to ArcMap, its spatial reference is read by this property, and the map is set to this spatial reference.
Instances of the esriCarto.GroupLayer class will return null for this property, as a group layer can contain multiple datasets with different spatial references.
Modifications to a spatial reference returned by this property will not be persisted. To modify the spatial reference of a dataset, the IGeoDatasetSchemaEdit and IGeoDatasetSchemaEdit2 interfaces should be used.
getSpatialReference in interface IGeoDatasetIOException - If there are interop problems.
AutomationException - If the ArcObject component throws an exception.
public IEnvelope getExtent()
throws IOException,
AutomationException
The IGeoDataset::Extent property returns an envelope representing the maximum extent of data which has been stored in the dataset.
Consider the following scenario. A new feature class has features added to it. The IGeoDataset::Extent is then requested and an envelope is returned. The extents of the envelope returned are represented by the red box in the image below.
If a portion of the features were then deleted and the extent is again requested an envelope with the exact same extents as during the first request would be returned (see image below). This is because the deletion of features does not shrink the extent. However all additions of features outside the red box would increase the envelope returned to encompass the newly added features.
If you would like to update the IGeoDataset::Extent property to reflect the current features in your dataset please see IFeatureClassManage::UpdateExtent (also see IFeatureClassLoad). In the image below the extent has been updated and a new envelope is being returned.
ESRI's GroupLayer implements this property differently from most other layer coclasses. When you instantiate a new GroupLayer, this property will return a valid envelope with zero height and width. With most other newly instantiated layers (for example FeatureLayer, RasterLayer, TinLayer), this property initally returns Nothing.
getExtent in interface IGeoDatasetIOException - If there are interop problems.
AutomationException - If the ArcObject component throws an exception.
public void writeFeature(IFeature feature)
throws IOException,
AutomationException
All edits to features that participate in a Topology or Geometric Network must be performed within an edit session and bracketed within an edit operation.
writeFeature in interface IFeatureClassWritefeature - A reference to a com.esri.arcgis.geodatabase.IFeature (in)
IOException - If there are interop problems.
AutomationException - If the ArcObject component throws an exception.
public void writeFeatures(ISet features)
throws IOException,
AutomationException
All edits to features that participate in a Topology or Geometric Network must be performed within an edit session and bracketed within an edit operation.
writeFeatures in interface IFeatureClassWritefeatures - A reference to a com.esri.arcgis.system.ISet (in)
IOException - If there are interop problems.
AutomationException - If the ArcObject component throws an exception.
public void removeFeature(IFeature feature)
throws IOException,
AutomationException
All edits to features that participate in a Topology or Geometric Network must be performed within an edit session and bracketed within an edit operation.
removeFeature in interface IFeatureClassWritefeature - A reference to a com.esri.arcgis.geodatabase.IFeature (in)
IOException - If there are interop problems.
AutomationException - If the ArcObject component throws an exception.
public void removeFeatures(ISet features)
throws IOException,
AutomationException
All edits to features that participate in a Topology or Geometric Network must be performed within an edit session and bracketed within an edit operation.
removeFeatures in interface IFeatureClassWritefeatures - A reference to a com.esri.arcgis.system.ISet (in)
IOException - If there are interop problems.
AutomationException - If the ArcObject component throws an exception.
public boolean isLoadOnlyMode()
throws IOException,
AutomationException
isLoadOnlyMode in interface IFeatureClassLoadIOException - If there are interop problems.
AutomationException - If the ArcObject component throws an exception.
public void setLoadOnlyMode(boolean isInLoadMode)
throws IOException,
AutomationException
setLoadOnlyMode in interface IFeatureClassLoadisInLoadMode - The isInLoadMode (in)
IOException - If there are interop problems.
AutomationException - If the ArcObject component throws an exception.
public boolean isCanSelect()
throws IOException,
AutomationException
Use CanSelect to determine if you can open a selection set on the table. A situation where CanSelect will be False is a standalone database table without an OID column.
isCanSelect in interface ITableCapabilitiesIOException - If there are interop problems.
AutomationException - If the ArcObject component throws an exception.
public void updateExtent()
throws IOException,
AutomationException
The UpdateExtent method recalculates the XY, Z and M extent for a feature class, based on the features contained within it. This extent is returned by the IGeodataset.Extent property. As new features are added to a feature class in a geodatabase, or a shapefile feature class, the extent is automatically expanded to accomodate them, however, when features are deleted, the extent does not shrink to eliminate areas where there are no longer features. This method will shrink the extent of the feature class to eliminate these areas.
The extent is a property of the feature class' schema, therefore, it requires an exclusive schema lock to execute, and is not an undoable operation. In the case of personal, File and ArcSDE geodatabase feature classes, the M and Z extent are not stored with the class. In the case of shapefiles, the M and Z extents are stored with the feature class.
When calling this method against an ArcSDE feature class, the extent is calculated based on the features that exist for that feature class in all versions. The extent will not shrink unless this method is called after the database has been compressed.
This method is not supported on coverage feature classes. A coverage's extent is maintained automatically during the editing process.
Note: The extents discussed here is not the same as the spatial reference domain. The domains (XY, Z, M) define the valid range of coordinate values that can be stored in a feature class. The extents reflect the actual range of coordinate values that exist within the feature class. The extents cannot be larger than the domains.
updateExtent in interface IFeatureClassManageIOException - If there are interop problems.
AutomationException - If the ArcObject component throws an exception.
public String getRasterFieldName()
throws IOException,
AutomationException
getRasterFieldName in interface IRasterCatalogIOException - If there are interop problems.
AutomationException - If the ArcObject component throws an exception.
public int getRasterFieldIndex()
throws IOException,
AutomationException
getRasterFieldIndex in interface IRasterCatalogIOException - If there are interop problems.
AutomationException - If the ArcObject component throws an exception.
public int getNameFieldIndex()
throws IOException,
AutomationException
getNameFieldIndex in interface IRasterCatalogIOException - If there are interop problems.
AutomationException - If the ArcObject component throws an exception.
public ISpatialReference getRasterSpatialReference()
throws IOException,
AutomationException
getRasterSpatialReference in interface IRasterCatalogIOException - If there are interop problems.
AutomationException - If the ArcObject component throws an exception.
public boolean isCanAlterRasterSpatialReference()
throws IOException,
AutomationException
isCanAlterRasterSpatialReference in interface IRasterCatalogIOException - If there are interop problems.
AutomationException - If the ArcObject component throws an exception.
public void alterRasterSpatialReference(ISpatialReference spatialReference)
throws IOException,
AutomationException
alterRasterSpatialReference in interface IRasterCatalogspatialReference - A reference to a com.esri.arcgis.geometry.ISpatialReference (in)
IOException - If there are interop problems.
AutomationException - If the ArcObject component throws an exception.
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