com.esri.arcgis.geodatabase
Class IRelQueryTableInfoProxy

java.lang.Object
  com.esri.arcgis.interop.Dispatch
      com.esri.arcgis.geodatabase.IRelQueryTableInfoProxy

All Implemented Interfaces:

IRelQueryTableInfo, Externalizable, Serializable

public class IRelQueryTableInfoProxy
extends com.esri.arcgis.interop.Dispatch
implements IRelQueryTableInfo, Serializable

Provides access to members that provide information about joins.

Remarks

The IRelQueryTableInfo interface provides properties and methods that return information about a RelQueryTable after it has been created.

Product Availability

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

See Also:

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

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

Method Summary

void	addListener(String iidStr, Object theListener, Object theSource)
ITable	getBaseTableOfField(String column) Returns the base table for a particular field.
int	getJoinType() Type of table join.
IQueryDef	getQueryDef() QueryDef used to create the join.
boolean	isHasDirectAccessLookup() Indicates if direct access lookup is used by a RelQueryTable to match records between the source and destination tables.
void	removeListener(String iidStr, Object theListener)

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

Field Detail

noncastable

public boolean noncastable

Constructor Detail

IRelQueryTableInfoProxy

public IRelQueryTableInfoProxy()

IRelQueryTableInfoProxy

public IRelQueryTableInfoProxy(Object obj)
                        throws IOException

Throws:

IOException

IRelQueryTableInfoProxy

protected IRelQueryTableInfoProxy(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 com.esri.arcgis.interop.Dispatch

Throws:

IOException

removeListener

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

Overrides:

removeListener in class com.esri.arcgis.interop.Dispatch

Throws:

IOException

getJoinType

public int getJoinType()
                throws IOException,
                       AutomationException

Type of table join.

Remarks

The JoinType can be either esriLeftInnerJoin or esriLeftOuterJoin. A left outer join ensures that all records in the source are returned. A left inner join will only return rows that have matching key field values. The diagram below illustrates the difference.

When using ArcMap's user interface to join data, you can choose between either type of join. Clicking the advanced button on the join data dialog box will display a dialog box that allows you to choose the join type. Here, the "Keep all records" option refers to a left outer join when the "Keep only matching records" option specifies a left inner join.

Product Availability

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

Supported Platforms

Windows, Solaris, Linux

Specified by:

getJoinType in interface IRelQueryTableInfo

Returns:

A com.esri.arcgis.geodatabase.esriJoinType constant

Throws:

IOException - If there are interop problems.

AutomationException - If the ArcObject component throws an exception.

getQueryDef

public IQueryDef getQueryDef()
                      throws IOException,
                             AutomationException

QueryDef used to create the join. This property will be null if the join is done on the client.

Remarks

The QueryDef property returns the query that is used to retrieve the joined data when processing is done on the server. If the join is processed on the client as apposed to a server, the QueryDef property returns a null value.

If all tables involved are stored on the same ArcSDE, Personal or File Geodatabase, the processing can be performed by the server, which is normally faster. The JoinType must also be esriLeftInnerJoin in order for processing to occur on the server. In any other case, processing occurs on the client.

Product Availability

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

Supported Platforms

Windows, Solaris, Linux

Specified by:

getQueryDef in interface IRelQueryTableInfo

Returns:

A reference to a com.esri.arcgis.geodatabase.IQueryDef

Throws:

IOException - If there are interop problems.

AutomationException - If the ArcObject component throws an exception.

getBaseTableOfField

public ITable getBaseTableOfField(String column)
                           throws IOException,
                                  AutomationException

Returns the base table for a particular field.

Remarks

The GetBaseTableofField method will return the underlying Table object that is associated with a field in a RelQueryTable. To ensure that the column will be found, provide a fully qualified field name when executing this method.

Product Availability

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

Supported Platforms

Windows, Solaris, Linux

Specified by:

getBaseTableOfField in interface IRelQueryTableInfo

Parameters:

column - The column (in)

Returns:

A reference to a com.esri.arcgis.geodatabase.ITable

Throws:

IOException - If there are interop problems.

AutomationException - If the ArcObject component throws an exception.

isHasDirectAccessLookup

public boolean isHasDirectAccessLookup()
                                throws IOException,
                                       AutomationException

Indicates if direct access lookup is used by a RelQueryTable to match records between the source and destination tables.

Remarks

The HasDirectAccessLookup property returns true if the destination table supports the IRandomAccessCursor interface and the source table has an ObjectID field. This interface allows for faster data access and therefore better join performance. Tables from shapefile and ArcInfo workspace factories support this interface.

Product Availability

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

Supported Platforms

Windows, Solaris, Linux

Specified by:

isHasDirectAccessLookup in interface IRelQueryTableInfo

Returns:

The directAccess

Throws:

IOException - If there are interop problems.

AutomationException - If the ArcObject component throws an exception.