com.esri.arcgis.carto
Class DummyLayer

java.lang.Object
  com.esri.arcgis.carto.DummyLayer

All Implemented Interfaces:

ILayer, ILegendInfo, com.esri.arcgis.interop.RemoteObjRef, Serializable

public class DummyLayer
extends Object
implements com.esri.arcgis.interop.RemoteObjRef, ILayer, ILegendInfo

A dummy layer used to display legend items in the style gallery (Singleton).

Remarks

DummyLayer implements ILayer, but does not implement all of its members. The only members implemented are ILayer.Cached (Get only), ILayer.Valid and ILayer.Visible (Get Only). If you try to call any other members, you'll get an error, HRESULT of E_NOTIMPL in C++. In VB, this is Error 445, "Object doesn't support this action".

DummyLayer does not implement ILegendInfo.SymbolsAreGraduated (Put). It you attempt to call this member you'll get an error, HRESULT of E_NOTIMPL in C++. In VB, this is Error 445, "Object doesn't support this action".

Product Availability

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

Supported Platforms

Windows, Solaris, Linux

Singleton:

This type is a singleton.

See Also:

Serialized Form

Constructor Summary

DummyLayer()
Constructs a DummyLayer using ArcGIS Engine.

DummyLayer(Object obj)
Deprecated. As of ArcGIS 9.2, replaced by normal Java casts.
DummyLayer theDummyLayer = (DummyLayer) obj;

Method Summary

void	draw(int drawPhase, IDisplay display, ITrackCancel trackCancel) Draws the layer to the specified display for the given draw phase.
boolean	equals(Object o) Compare this object with another
IEnvelope	getAreaOfInterest() The default area of interest for the layer.
static String	getClsid() getClsid.
ILegendGroup	getLegendGroup(int index) Legend group at the specified index.
int	getLegendGroupCount() Number of legend groups contained by the object.
ILegendItem	getLegendItem() Optional.
double	getMaximumScale() Maximum scale (representative fraction) at which the layer will display.
double	getMinimumScale() Minimum scale (representative fraction) at which the layer will display.
String	getName() Layer name.
int	getSupportedDrawPhases() Supported draw phases.
String	getTipText(double x, double y, double tolerance) Map tip text at the specified location.
int	hashCode() the hashcode for this object
boolean	isCached() Indicates if the layer needs its own display cache.
boolean	isShowTips() Indicates if the layer shows map tips.
boolean	isSymbolsAreGraduated() Indicates if symbols are graduated.
boolean	isValid() Indicates if the layer is currently valid.
boolean	isVisible() Indicates if the layer is currently visible.
void	setCached(boolean cached) Indicates if the layer needs its own display cache.
void	setMaximumScale(double maxScale) Maximum scale (representative fraction) at which the layer will display.
void	setMinimumScale(double minScale) Minimum scale (representative fraction) at which the layer will display.
void	setName(String name) Layer name.
void	setShowTips(boolean show) Indicates if the layer shows map tips.
void	setSpatialReferenceByRef(ISpatialReference rhs1) Spatial reference for the layer.
void	setSymbolsAreGraduated(boolean symbolsAreGraduated) Indicates if symbols are graduated.
void	setVisible(boolean visible) Indicates if the layer is currently visible.

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

DummyLayer

public DummyLayer()
           throws IOException,
                  UnknownHostException

Constructs a DummyLayer using ArcGIS Engine.

Throws:

IOException - if there are interop problems

UnknownHostException - if there are interop problems

DummyLayer

public DummyLayer(Object obj)
           throws IOException

Deprecated. As of ArcGIS 9.2, replaced by normal Java casts.
DummyLayer theDummyLayer = (DummyLayer) obj;

Construct a DummyLayer using a reference to such an object returned from ArcGIS Engine or Server. This is semantically equivalent to casting obj to DummyLayer.

Parameters:

obj - an object returned from ArcGIS Engine or Server

Throws:

IOException - if there are interop problems

Method Detail

getClsid

public static String getClsid()

getClsid.

equals

public boolean equals(Object o)

Compare this object with another

Overrides:

equals in class Object

hashCode

public int hashCode()

the hashcode for this object

Overrides:

hashCode in class Object

getName

public String getName()
               throws IOException,
                      AutomationException

Layer name.

Description

Remarks

Use this property to associate a string with a layer.

Product Availability

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

Supported Platforms

Windows, Solaris, Linux

Specified by:

getName in interface ILayer

Returns:

The name

Throws:

IOException - If there are interop problems.

AutomationException - If the ArcObject component throws an exception.

setName

public void setName(String name)
             throws IOException,
                    AutomationException

Layer name.

Description

Use the Name property to associate a string with the layer.

Product Availability

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

Supported Platforms

Windows, Solaris, Linux

Specified by:

setName in interface ILayer

Parameters:

name - The name (in)

Throws:

IOException - If there are interop problems.

AutomationException - If the ArcObject component throws an exception.

isValid

public boolean isValid()
                throws IOException,
                       AutomationException

Indicates if the layer is currently valid.

Remarks

The valid property indicates if the layer is currently valid. Layers that reference feature classes are valid when they hold a reference to a valid feature class. The property does not however validate the integrity of the feature classes reference to the database. Therefore, in rare situations if a datasource is removed after a layer is initialized, the layer will report itself as valid but query attempts to the data source will error due to the lack of underlying data.

Product Availability

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

Supported Platforms

Windows, Solaris, Linux

Specified by:

isValid in interface ILayer

Returns:

The valid

Throws:

IOException - If there are interop problems.

AutomationException - If the ArcObject component throws an exception.

getAreaOfInterest

public IEnvelope getAreaOfInterest()
                            throws IOException,
                                   AutomationException

The default area of interest for the layer.

Remarks

Returns the spatial-referenced extent of the layer.

Product Availability

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

Supported Platforms

Windows, Solaris, Linux

Specified by:

getAreaOfInterest in interface ILayer

Returns:

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

Throws:

IOException - If there are interop problems.

AutomationException - If the ArcObject component throws an exception.

getMinimumScale

public double getMinimumScale()
                       throws IOException,
                              AutomationException

Minimum scale (representative fraction) at which the layer will display.

Remarks

Specifies the minimum scale at which the layer will be displayed. This means that if you zoom out beyond this scale, the layer will not display. For example, specify 1000 to have the layer not display when zoomed out beyond 1:1000.

Product Availability

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

Supported Platforms

Windows, Solaris, Linux

Specified by:

getMinimumScale in interface ILayer

Returns:

The minScale

Throws:

IOException - If there are interop problems.

AutomationException - If the ArcObject component throws an exception.

setMinimumScale

public void setMinimumScale(double minScale)
                     throws IOException,
                            AutomationException

Minimum scale (representative fraction) at which the layer will display.

Description

MinimumScale property specifies the minimum scale at which the layer will be displayed. Assign a Double value to set this property.

Product Availability

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

Supported Platforms

Windows, Solaris, Linux

Specified by:

setMinimumScale in interface ILayer

Parameters:

minScale - The minScale (in)

Throws:

IOException - If there are interop problems.

AutomationException - If the ArcObject component throws an exception.

getMaximumScale

public double getMaximumScale()
                       throws IOException,
                              AutomationException

Maximum scale (representative fraction) at which the layer will display.

Remarks

Specifies the maximum scale at which the layer will be displayed. This means that if you zoom in beyond this scale, the layer will not display. For example, specify 500 to have the layer not display when zoomed in beyond 1:500.

Product Availability

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

Supported Platforms

Windows, Solaris, Linux

Specified by:

getMaximumScale in interface ILayer

Returns:

The maxScale

Throws:

IOException - If there are interop problems.

AutomationException - If the ArcObject component throws an exception.

setMaximumScale

public void setMaximumScale(double maxScale)
                     throws IOException,
                            AutomationException

Maximum scale (representative fraction) at which the layer will display.

Description

MaximumScale property specifies the maximum scale at which the layer will be displayed. Assign a Double value to set this property.

Product Availability

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

Supported Platforms

Windows, Solaris, Linux

Specified by:

setMaximumScale in interface ILayer

Parameters:

maxScale - The maxScale (in)

Throws:

IOException - If there are interop problems.

AutomationException - If the ArcObject component throws an exception.

isVisible

public boolean isVisible()
                  throws IOException,
                         AutomationException

Indicates if the layer is currently visible.

Product Availability

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

Supported Platforms

Windows, Solaris, Linux

Specified by:

isVisible in interface ILayer

Returns:

The visible

Throws:

IOException - If there are interop problems.

AutomationException - If the ArcObject component throws an exception.

setVisible

public void setVisible(boolean visible)
                throws IOException,
                       AutomationException

Indicates if the layer is currently visible.

Description

Use Visible property to set the visibility of the layer. When assigned False, the layer is invisible in the current view.

Product Availability

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

Supported Platforms

Windows, Solaris, Linux

Specified by:

setVisible in interface ILayer

Parameters:

visible - The visible (in)

Throws:

IOException - If there are interop problems.

AutomationException - If the ArcObject component throws an exception.

isShowTips

public boolean isShowTips()
                   throws IOException,
                          AutomationException

Indicates if the layer shows map tips.

Remarks

Indicates whether or not map tips are shown for the layer. If set to True, then map tips will be shown for the layer. You can determine the text that will be shown via TipText. For a FeatureLayer, this text comes from the data for IFeatureLayer::DisplayField.

Product Availability

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

Supported Platforms

Windows, Solaris, Linux

Specified by:

isShowTips in interface ILayer

Returns:

The show

Throws:

IOException - If there are interop problems.

AutomationException - If the ArcObject component throws an exception.

setShowTips

public void setShowTips(boolean show)
                 throws IOException,
                        AutomationException

Indicates if the layer shows map tips.

Description

ShowTips is set to True when the layer shows map tips specified in the TipText property.

Product Availability

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

Supported Platforms

Windows, Solaris, Linux

Specified by:

setShowTips in interface ILayer

Parameters:

show - The show (in)

Throws:

IOException - If there are interop problems.

AutomationException - If the ArcObject component throws an exception.

getTipText

public String getTipText(double x,
                         double y,
                         double tolerance)
                  throws IOException,
                         AutomationException

Map tip text at the specified location.

Product Availability

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

Specified by:

getTipText in interface ILayer

Parameters:

x - The x (in)

y - The y (in)

tolerance - The tolerance (in)

Returns:

The text

Throws:

IOException - If there are interop problems.

AutomationException - If the ArcObject component throws an exception.

isCached

public boolean isCached()
                 throws IOException,
                        AutomationException

Indicates if the layer needs its own display cache.

Remarks

This property indicates whether or not the layer requires its own display cache. If this property is True, then the Map will use a separate display cache for the layer so that it can be refreshed indpendently of other layers.

The Map is responsible for cache management. See IScreenDisplay::AddCache for more information on caches.

Product Availability

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

Supported Platforms

Windows, Solaris, Linux

Specified by:

isCached in interface ILayer

Returns:

The cached

Throws:

IOException - If there are interop problems.

AutomationException - If the ArcObject component throws an exception.

setCached

public void setCached(boolean cached)
               throws IOException,
                      AutomationException

Indicates if the layer needs its own display cache.

Description

Use Cached property to indicate if the layer needs its own cache for display.

Remarks

Informational property. Container is responsible for cache management.

Product Availability

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

Supported Platforms

Windows, Solaris, Linux

Specified by:

setCached in interface ILayer

Parameters:

cached - The cached (in)

Throws:

IOException - If there are interop problems.

AutomationException - If the ArcObject component throws an exception.

getSupportedDrawPhases

public int getSupportedDrawPhases()
                           throws IOException,
                                  AutomationException

Supported draw phases.

Remarks

Indicates the draw phases supported by the layer (esriDPGeography, esriDPAnnotation, esriDPSelection, or any combination of the three). The supported draw phases are defined by esriDrawPhase. When multiple draw phases are supported, the sum of the constants is used. For example, if SupportedDrawPhases = 3 then the layer supports drawing in the geography and annotation phases.

Product Availability

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

Supported Platforms

Windows, Solaris, Linux

Specified by:

getSupportedDrawPhases in interface ILayer

Returns:

The drawPhases

Throws:

IOException - If there are interop problems.

AutomationException - If the ArcObject component throws an exception.

setSpatialReferenceByRef

public void setSpatialReferenceByRef(ISpatialReference rhs1)
                              throws IOException,
                                     AutomationException

Spatial reference for the layer.

Remarks

This property is only used for map display, setting this property does not change the spatial reference of the layer's underlying data. The ArcGIS framework uses this property to pass the spatial reference from the map to the layer in order to support on-the-fly projection.

Product Availability

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

Supported Platforms

Windows, Solaris, Linux

Specified by:

setSpatialReferenceByRef in interface ILayer

Parameters:

rhs1 - A reference to a com.esri.arcgis.geometry.ISpatialReference (in)

Throws:

IOException - If there are interop problems.

AutomationException - If the ArcObject component throws an exception.

draw

public void draw(int drawPhase,
                 IDisplay display,
                 ITrackCancel trackCancel)
          throws IOException,
                 AutomationException

Draws the layer to the specified display for the given draw phase.

Remarks

This method draws the layer to the Display for the specified DrawPhase. Use the TrackCancel object to allow the drawing of the layer to be interrupted by the user.

Product Availability

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

Supported Platforms

Windows, Solaris, Linux

Specified by:

draw in interface ILayer

Parameters:

drawPhase - A com.esri.arcgis.system.esriDrawPhase constant (in)

display - A reference to a com.esri.arcgis.display.IDisplay (in)

trackCancel - A reference to a com.esri.arcgis.system.ITrackCancel (in)

Throws:

IOException - If there are interop problems.

AutomationException - If the ArcObject component throws an exception.

getLegendGroupCount

public int getLegendGroupCount()
                        throws IOException,
                               AutomationException

Number of legend groups contained by the object.

Remarks

The number of legend groups is determined by the implementation of the renderer, consequently this property is read only. For example, SimpleRenderer has one group, while a BiUniqueValueRenderer has any number of groups.

Product Availability

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

Supported Platforms

Windows, Solaris, Linux

Specified by:

getLegendGroupCount in interface ILegendInfo

Returns:

The count

Throws:

IOException - If there are interop problems.

AutomationException - If the ArcObject component throws an exception.

getLegendGroup

public ILegendGroup getLegendGroup(int index)
                            throws IOException,
                                   AutomationException

Legend group at the specified index.

Product Availability

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

Specified by:

getLegendGroup in interface ILegendInfo

Parameters:

index - The index (in)

Returns:

A reference to a com.esri.arcgis.carto.ILegendGroup

Throws:

IOException - If there are interop problems.

AutomationException - If the ArcObject component throws an exception.

getLegendItem

public ILegendItem getLegendItem()
                          throws IOException,
                                 AutomationException

Optional. Defines legend formatting for layer rendered with this object.

Remarks

Layer or renderer legend information is further formatted for display in ArcMap legends. A renderer can override this formatting by returning a LegendItem for this property. ESRI renderers typically do not return anything for this property. With this configuration, legend formatting becomes a user or developer choice on the legend object.

Product Availability

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

Supported Platforms

Windows, Solaris, Linux

Specified by:

getLegendItem in interface ILegendInfo

Returns:

A reference to a com.esri.arcgis.carto.ILegendItem

Throws:

IOException - If there are interop problems.

AutomationException - If the ArcObject component throws an exception.

isSymbolsAreGraduated

public boolean isSymbolsAreGraduated()
                              throws IOException,
                                     AutomationException

Indicates if symbols are graduated.

Description

Indicates whether the symbols used for a layer or renderer's legend vary by size.

Remarks

For example the proportional symbol renderer returns True for this property.

You can use this property to distinguish between a layer symbolized with graduated color or graduated symbol type layer symbology. Both of these symbolizations use a ClassBreaksRenderer, but only a graduated symbol symbolization will return True for this property.

Product Availability

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

Supported Platforms

Windows, Solaris, Linux

Specified by:

isSymbolsAreGraduated in interface ILegendInfo

Returns:

The symbolsAreGraduated

Throws:

IOException - If there are interop problems.

AutomationException - If the ArcObject component throws an exception.

setSymbolsAreGraduated

public void setSymbolsAreGraduated(boolean symbolsAreGraduated)
                            throws IOException,
                                   AutomationException

Indicates if symbols are graduated.

Product Availability

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

Supported Platforms

Windows, Solaris, Linux

Specified by:

setSymbolsAreGraduated in interface ILegendInfo

Parameters:

symbolsAreGraduated - The symbolsAreGraduated (in)

Throws:

IOException - If there are interop problems.

AutomationException - If the ArcObject component throws an exception.