com.esri.arcgis.geodatabase
Class ISpatialFilterProxy

java.lang.Object
  com.esri.arcgis.interop.Dispatch
      com.esri.arcgis.geodatabase.IQueryFilterProxy
          com.esri.arcgis.geodatabase.ISpatialFilterProxy

All Implemented Interfaces:

IQueryFilter, ISpatialFilter, Externalizable, Serializable

public class ISpatialFilterProxy
extends IQueryFilterProxy
implements ISpatialFilter, Serializable

Provides access to members that return and modify the type of spatial relationship that the filter will use.

Description

ISpatialFilter is a QueryFilter that includes both spatial and attribute constraints. Therefore, a SpatialFilter can be used to restrict the set of features retrieved from a feature class using both spatial and attribute restrictions. ISpatialFilter inherits from IQueryFilter so you can optionally specify a string defining a where clause, include a list of columns to be retrieved or specify the spatial reference in which to output the geometry of the resulting features. See the IQueryFilter interface for help on the inherited methods and properties.

The most common ways to perform a spatial query using a spatial filter is to create the spatial filter using this interface and use it as a parameter for IFeatureClass::Search, IFeatureClass::Select or similar methods on feature layers, selection sets, etc.

The Geometry and SpatialRel properties are required.

Geometry is the source geometry in relation to which the spatial selection will be performed. GeometryField is a string corresponding to the name of the field containing the geometries to be compared to the source geometry. Finally the spatial relationship is specified with the SpatialRel property passing it an esriSpatialRelEnum .

A SearchOrder can be specified using an esriSearchOrder. When an attribute query is specified it will specify which of the attritute or spatial part of the query is executed first. A judicious choice may significantly improve the performances. This is only available with SDE datasources.

The SpatialRelDescription can optionally be populated with a string to define spatial relationships that are not possible using the esriSpatialRelEnum values. In this case the SpatialRel parameter must be set to esriSpatialRelRelation. See the help on the SpatialRelDescription property for details on string formatting.

The esriGeometry library provides other ways to perform a spatial selection. See, for instance, the example associated with ITopologicalOperator that performs a spatial selection on polylines that share a line segment.

Product Availability

Available with ArcGIS Engine, ArcGIS Desktop, and ArcGIS Server.

See Also:

IQueryDef, com.esri.arcgis.catalogUI.IGxObjectFilter, IFeatureClass.getFeatures(java.lang.Object, boolean), IFeatureClass.search(com.esri.arcgis.geodatabase.IQueryFilter, boolean), IFeatureClass.featureCount(com.esri.arcgis.geodatabase.IQueryFilter), IQueryFilter, Serialized Form

Field Summary

boolean

noncastable

Fields inherited from class com.esri.arcgis.interop.Dispatch

DISPATCH_METHOD, DISPATCH_PROPERTYGET, DISPATCH_PROPERTYPUT, DISPATCH_PROPERTYPUTREF, objRef

Constructor Summary

	ISpatialFilterProxy()
	ISpatialFilterProxy(Object obj)
protected	ISpatialFilterProxy(Object obj, String iid)

Method Summary

void	addListener(String iidStr, Object theListener, Object theSource)
IGeometry	getGeometry() The query geometry used to filter results.
String	getGeometryField() The name of the Geometry field to which the filter applies.
int	getSearchOrder() The search order used by the filter.
int	getSpatialRel() The spatial relationship checked by the filter.
String	getSpatialRelDescription() The array elements which describe the spatial relation between the query geometry and the requested geometries.
boolean	isFilterOwnsGeometry() Indicates whether the filter owns the query geometry.
void	removeListener(String iidStr, Object theListener)
void	setGeometryByRef(IGeometry geometry) The query geometry used to filter results.
void	setGeometryExByRef(IGeometry geometry, boolean rhs2) The query geometry used to filter results.
void	setGeometryField(String geomField) The name of the Geometry field to which the filter applies.
void	setSearchOrder(int order) The search order used by the filter.
void	setSpatialRel(int spatialRel) The spatial relationship checked by the filter.
void	setSpatialRelDescription(String spatialRelDescription) The array elements which describe the spatial relation between the query geometry and the requested geometries.

Methods inherited from class com.esri.arcgis.geodatabase.IQueryFilterProxy

addField, getOutputSpatialReference, getSubFields, getWhereClause, setOutputSpatialReferenceByRef, setSubFields, setWhereClause

Methods inherited from class com.esri.arcgis.interop.Dispatch

bindUsingMoniker, constructVtblPosTable, convertToNative, cookieForListener, createDispatch, createObjrefMonikerDisplayName, equals, getActiveObject, getActiveObject, getDefaultProperty, getDispatchIdOfName, getLastErrorCode, getMtsObjectContext, getObjRef, getPropertyByName, getPropertyByName, getVtblPos, hashCode, initDispatch, invoke, invokeMethodByName, invokeMethodByName, invokeMethodByName, invokePropertyGetByName, invokePropertyPutByName, invokePropertyPutByRefByName, isNativeMode, isObjRef, optimizedVtblInvoke, queryInterface, readExternal, release, setNativeMode, setPropertyByName, toString, vtblInvoke, writeExternal

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface com.esri.arcgis.geodatabase.IQueryFilter

addField, getOutputSpatialReference, getSubFields, getWhereClause, setOutputSpatialReferenceByRef, setSubFields, setWhereClause

Field Detail

noncastable

public boolean noncastable

Constructor Detail

ISpatialFilterProxy

public ISpatialFilterProxy()

ISpatialFilterProxy

public ISpatialFilterProxy(Object obj)
                    throws IOException

Throws:

IOException

ISpatialFilterProxy

protected ISpatialFilterProxy(Object obj,
                              String iid)
                       throws IOException

Throws:

IOException

Method Detail

addListener

public void addListener(String iidStr,
                        Object theListener,
                        Object theSource)
                 throws IOException

Overrides:

addListener in class IQueryFilterProxy

Throws:

IOException

removeListener

public void removeListener(String iidStr,
                           Object theListener)
                    throws IOException

Overrides:

removeListener in class IQueryFilterProxy

Throws:

IOException

getSearchOrder

public int getSearchOrder()
                   throws IOException,
                          AutomationException

The search order used by the filter.

Description

SearchOrder gets the order in which spatial searches are applied by the RDBMS (ArcSDE). This property only affects ArcSDE Geodatabase data. It has no effect on Personal or File Geodatabase, Coverage or Shapefile data.

Remarks

SearchOrder gets the order in which spatial searches are applied by the RDBMS (ArcSDE). The spatial component of the search should generally be applied before the attribute component. The more spatially restrictive of the two should be used. In the following query, "Find all wells with particulate counts between 1000 and 1200 in within 5 miles of a school", the esriSearchOrderAttribute enumerator is more effective. If the filter geometry is the outline of the city of Modesto, California and the attribute query is "street_name = 'Main St.'" then esriSearchOrderSpatial should be used, as there are a large number of "Main St." records at a national level.

Please note that esriSearchOrderSpatial is the default option. The following esriSearchOrder enumeration values are used to set the search order:

esriSearchOrderAttribute

Sets the search order to attribute first.

esriSearchOrderSpatial

Sets the search order to spatial first.

Product Availability

Available with ArcGIS Engine, ArcGIS Desktop, and ArcGIS Server.

Supported Platforms

Windows, Solaris, Linux

Specified by:

getSearchOrder in interface ISpatialFilter

Returns:

A com.esri.arcgis.geodatabase.esriSearchOrder constant

Throws:

IOException - If there are interop problems.

AutomationException - If the ArcObject component throws an exception.

setSearchOrder

public void setSearchOrder(int order)
                    throws IOException,
                           AutomationException

The search order used by the filter.

Description

SearchOrder

Sets the order in which spatial searches are applied by the RDBMS (ArcSDE).

Remarks

SearchOrder

Sets the order in which spatial searches are applied by the RDBMS (ArcSDE). The spatial component of the search should generally be applied before the attribute component. The more spatially restrictive of the two should be used. In the following query, "Find all wells with particulate counts between 1000 and 1200 in within 5 miles of a school", the esriSearchOrderAttribute enumerator is more effective. If the filter geometry is the outline of the city of Modesto, California and the attribute query is "street_name = 'Main St.'" then esriSearchOrderSpatial should be used, as there are a large number of "Main St." records at a national level.

NOTE: esriSearchOrderSpatial is the default.

The following esriSearchOrder enumeration values are used to set the search order:

esriSearchOrderAttribute

Sets the search order to attribute first.

esriSearchOrderSpatial

Sets the search order to spatial first.

Example (VB6):

pSpatialFiler.SearchOrder = esriSearchOrderAttribute

Product Availability

Available with ArcGIS Engine, ArcGIS Desktop, and ArcGIS Server.

Supported Platforms

Windows, Solaris, Linux

Specified by:

setSearchOrder in interface ISpatialFilter

Parameters:

order - A com.esri.arcgis.geodatabase.esriSearchOrder constant (in)

Throws:

IOException - If there are interop problems.

AutomationException - If the ArcObject component throws an exception.

getSpatialRel

public int getSpatialRel()
                  throws IOException,
                         AutomationException

The spatial relationship checked by the filter.

Description

Tolerances

Most spatial relationships are defined by the intersection of boundaries, interior and exterior. All shapes have an interior. Lines and polygons have a boundary. Most spatial relations use a tolerance when examining the spatial relationship between two features. In most cases this tolerance is the XY tolerance of the search feature. All geometries within the tolerance are seen as intersecting. In the overlaps case the tolerance sets the minimum overlap. Geometries that overlap less than the tolerance will not be seen as overlapping.

Relationships that use the XY tolerance:

esriSpatialRelIntersects
esriSpatialRelEnvelopeIntersects
esriSpatialRelTouches
esriSpatialRelOverlaps
esriSpatialRelCrosses
esriSpatialRelWithin
esriSpatialRelContains

The esriSpatialRelRelation uses the XY resolution. Usually ten times smaller than the XY tolerance.

esriSpatialRelIndexIntersects does not use a tolerance.

Product Availability

Available with ArcGIS Engine, ArcGIS Desktop, and ArcGIS Server.

Supported Platforms

Windows, Solaris, Linux

Specified by:

getSpatialRel in interface ISpatialFilter

Returns:

A com.esri.arcgis.geodatabase.esriSpatialRelEnum constant

Throws:

IOException - If there are interop problems.

AutomationException - If the ArcObject component throws an exception.

setSpatialRel

public void setSpatialRel(int spatialRel)
                   throws IOException,
                          AutomationException

The spatial relationship checked by the filter.

Product Availability

Available with ArcGIS Engine, ArcGIS Desktop, and ArcGIS Server.

Supported Platforms

Windows, Solaris, Linux

Specified by:

setSpatialRel in interface ISpatialFilter

Parameters:

spatialRel - A com.esri.arcgis.geodatabase.esriSpatialRelEnum constant (in)

Throws:

IOException - If there are interop problems.

AutomationException - If the ArcObject component throws an exception.

getGeometry

public IGeometry getGeometry()
                      throws IOException,
                             AutomationException

The query geometry used to filter results.

Description

Only high-level geometries, envelopes and geometry bags can be used. High-level geometries are polygons, polylines, points, and multipoints. Low-level geometries including paths, rings, arcs and curves, and lines can not be used. To test whether a geometry is applicable, see if it implements the IRelationalOperator interface; if it does, it can be used.

Remarks

If a geometry bag is being used as the filter's query geometry, a spatial index should be created for the bag prior to any evaluation using the filter. This can be done by casting the geometry bag to the ISpatialIndex interface, setting the AllowIndexing property to true, and calling the Invalidate method.

Note that at ArcGIS 9.3 and later, setting this property to null will cause an error.

Product Availability

Available with ArcGIS Engine, ArcGIS Desktop, and ArcGIS Server.

Supported Platforms

Windows, Solaris, Linux

Specified by:

getGeometry in interface ISpatialFilter

Returns:

A reference to a com.esri.arcgis.geometry.IGeometry

Throws:

IOException - If there are interop problems.

AutomationException - If the ArcObject component throws an exception.

setGeometryByRef

public void setGeometryByRef(IGeometry geometry)
                      throws IOException,
                             AutomationException

The query geometry used to filter results.

Description

Only high-level geometries, envelopes and geometry bags can be used. High-level geometries are polygons, polylines, points, and multipoints. Low-level geometries including paths, rings, arcs and curves, and lines can not be used. To test whether a geometry is applicable, see if it implements the IRelationalOperator interface; if it does, it can be used.

Product Availability

Available with ArcGIS Engine, ArcGIS Desktop, and ArcGIS Server.

Supported Platforms

Windows, Solaris, Linux

Specified by:

setGeometryByRef in interface ISpatialFilter

Parameters:

geometry - A reference to a com.esri.arcgis.geometry.IGeometry (in)

Throws:

IOException - If there are interop problems.

AutomationException - If the ArcObject component throws an exception.

setGeometryExByRef

public void setGeometryExByRef(IGeometry geometry,
                               boolean rhs2)
                        throws IOException,
                               AutomationException

The query geometry used to filter results.

Description

Only high-level geometries, envelopes and geometry bags can be used. High-level geometries are polygons, polylines, points, and multipoints. Low-level geometries including paths, rings, arcs and curves, and lines can not be used. To test whether a geometry is applicable, see if it implements the IRelationalOperator interface; if it does, it can be used.

Remarks

The boolean parameter represents the FilterOwnsGeometry property.

Product Availability

Available with ArcGIS Engine, ArcGIS Desktop, and ArcGIS Server.

Supported Platforms

Windows, Solaris, Linux

Specified by:

setGeometryExByRef in interface ISpatialFilter

Parameters:

geometry - A reference to a com.esri.arcgis.geometry.IGeometry (in)

rhs2 - The rhs2 (in)

Throws:

IOException - If there are interop problems.

AutomationException - If the ArcObject component throws an exception.

isFilterOwnsGeometry

public boolean isFilterOwnsGeometry()
                             throws IOException,
                                    AutomationException

Indicates whether the filter owns the query geometry.

Product Availability

Available with ArcGIS Engine, ArcGIS Desktop, and ArcGIS Server.

Supported Platforms

Windows, Solaris, Linux

Specified by:

isFilterOwnsGeometry in interface ISpatialFilter

Returns:

The spatialFilterOwnsGeometry

Throws:

IOException - If there are interop problems.

AutomationException - If the ArcObject component throws an exception.

getGeometryField

public String getGeometryField()
                        throws IOException,
                               AutomationException

The name of the Geometry field to which the filter applies.

Product Availability

Available with ArcGIS Engine, ArcGIS Desktop, and ArcGIS Server.

Supported Platforms

Windows, Solaris, Linux

Specified by:

getGeometryField in interface ISpatialFilter

Returns:

The geomField

Throws:

IOException - If there are interop problems.

AutomationException - If the ArcObject component throws an exception.

setGeometryField

public void setGeometryField(String geomField)
                      throws IOException,
                             AutomationException

The name of the Geometry field to which the filter applies.

Product Availability

Available with ArcGIS Engine, ArcGIS Desktop, and ArcGIS Server.

Supported Platforms

Windows, Solaris, Linux

Specified by:

setGeometryField in interface ISpatialFilter

Parameters:

geomField - The geomField (in)

Throws:

IOException - If there are interop problems.

AutomationException - If the ArcObject component throws an exception.

getSpatialRelDescription

public String getSpatialRelDescription()
                                throws IOException,
                                       AutomationException

The array elements which describe the spatial relation between the query geometry and the requested geometries. There are 9 chars in this string which can be either 'F', 'T' or '*'; e.g., TT*FFT***' represents CONTAIN.

Description

A nine character string containing describing the spatial relationships to be tested by the spatial filter. Required when setting the SpatialRel property to use the esriSpatialRelRelation enumerator.

Remarks

The SpatialRelDescription allows the comparison of any spatial relationship between two geometries. A spatial relationship is defined by the intersections between the boundary, interior, and exterior of the query geometry and the requested geometry.

All of the spatial relationships defined by the esriSpatialRelEnum enumeration can be duplicated using this property.

Interior:
The interior of a shape is defined as the entire shape minus its boundary. All shapes have interior.

Boundary:
Linear and area shapes have boundaries, but point shapes do not. The boundary of linear shapes consists of the end points of all linear parts. The boundary of area shapes consists of the linear boundary of the polygon shell(s).

Exterior:
The area outside a shape. All shapes have an exterior.

Each element for the first shape, the query geometry, may be tested against each element of the second shape, the requested geometry, giving nine possible spatial intersections as listed in the table below:

	Query Geometry	Requested Geometry
1	interior	interior
2	interior	boundary
3	interior	exterior
4	boundary	interior
5	boundary	boundary
6	boundary	exterior
7	exterior	interior
8	exterior	boundary
9	exterior	exterior

The nine-characters string expected by ISpatialFilter::SpatialRelDescription, is used to specify whether the intersection of each of the elements in the array is true (T), false (F), or not tested (*).

For instance, in 'FFFTTT***', relationships 1-3 must be false, relationships 4-6 must be true, and relationships 7-9 are not tested.

Note that any two shapes' exteriors always intersect.

Example Strings

Shares a boundary: '****T***'

Shares a boundary and interiors intersect: 'T***T****'

Shares a boundary and interiors do not intersect: 'F***T****'

Does not touch the boundary and interiors intersect: 'T***F****'

Approximate esriSpatialRelEnum SpatialRelDescription Strings

Relation	Query Geometry	Requested Geometry	String
Contains	Line	Line	TT*FFT***
Contains	Point	Line	TT*FFT***
Contains	Point	Point	T********
Contains	Line	Poly	TT*FFT***
Contains	Poly	Poly	TT*FFT***
Crosses	Line	Line	TF*FF****
Crosses	Poly	Line	TT**F****
Crosses	Line	Poly	TT**T****
Overlaps	Line	Line	TT*T*****
Overlaps	Point	Point	T********
Overlaps	Poly	Poly	TT*T*****
Touch	Line	Line	FF*FT****
Touch	Poly	Line	FF*FT****
Touch	Line	Poly	FF*FT****
Touch	Poly	Poly	FF*FT****
Within	Line	Line	TF**F****
Within	Point	Line	T********
Within	Point	Point	T********
Within	Line	Poly	TF**F****
Within	Poly	Poly	TF**F****

Product Availability

Available with ArcGIS Engine, ArcGIS Desktop, and ArcGIS Server.

Supported Platforms

Windows, Solaris, Linux

Specified by:

getSpatialRelDescription in interface ISpatialFilter

Returns:

The spatialRelDescription

Throws:

IOException - If there are interop problems.

AutomationException - If the ArcObject component throws an exception.

setSpatialRelDescription

public void setSpatialRelDescription(String spatialRelDescription)
                              throws IOException,
                                     AutomationException

The array elements which describe the spatial relation between the query geometry and the requested geometries. There are 9 chars in this string which can be either 'F', 'T' or '*'; e.g., TT*FFT***' represents CONTAIN.

Product Availability

Available with ArcGIS Engine, ArcGIS Desktop, and ArcGIS Server.

Supported Platforms

Windows, Solaris, Linux

Specified by:

setSpatialRelDescription in interface ISpatialFilter

Parameters:

spatialRelDescription - The spatialRelDescription (in)

Throws:

IOException - If there are interop problems.

AutomationException - If the ArcObject component throws an exception.