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SyncProviderException.javaAPI DocJava SE 5 API6077Fri Aug 26 14:57:52 BST 2005javax.sql.rowset.spi

SyncProviderException

public class SyncProviderException extends SQLException
Indicates an error with the SyncProvider mechanism. This exception is created by a SyncProvider abstract class extension if it encounters violations in reading from or writing to the originating data source.

If it is implemented to do so, the SyncProvider object may also create a SyncResolver object and either initialize the SyncProviderException object with it at construction time or set it with the SyncProvider object at a later time.

The method acceptChanges will throw this exception after the writer has finished checking for conflicts and has found one or more conflicts. An application may catch a SyncProviderException object and call its getSyncResolver method to get its SyncResolver object. See the code fragment in the interface comment for SyncResolver for an example. This SyncResolver object will mirror the RowSet object that generated the exception, except that it will contain only the values from the data source that are in conflict. All other values in the SyncResolver object will be null.

The SyncResolver object may be used to examine and resolve each conflict in a row and then go to the next row with a conflict to repeat the procedure.

A SyncProviderException object may or may not contain a description of the condition causing the exception. The inherited method getMessage may be called to retrieve the description if there is one.

author
Jonathan Bruce
see
javax.sql.rowset.spi.SyncFactory
see
javax.sql.rowset.spi.SyncResolver
see
javax.sql.rowset.spi.SyncFactoryException

Fields Summary
private SyncResolver
syncResolver
The instance of javax.sql.rowset.spi.SyncResolver that this SyncProviderException object will return when its getSyncResolver method is called.
static final long
serialVersionUID
Constructors Summary
public SyncProviderException()
Creates a new SyncProviderException object without a detail message.

     
                  
          
        super();
public SyncProviderException(String msg)
Constructs a SyncProviderException object with the specified detail message.

param
msg the detail message

        super(msg);
public SyncProviderException(SyncResolver syncResolver)
Constructs a SyncProviderException object with the specified SyncResolver instance.

param
syncResolver the SyncResolver instance used to to process the synchronization conflicts
throws
IllegalArgumentException if the SyncResolver object is null.

        if (syncResolver == null) {
            throw new IllegalArgumentException("Cannot instantiate a SyncProviderException " +
                "with a null SyncResolver object");
        } else {
            this.syncResolver = syncResolver;
        }
Methods Summary
public javax.sql.rowset.spi.SyncResolvergetSyncResolver()
Retrieves the SyncResolver object that has been set for this SyncProviderException object, or if none has been set, an instance of the default SyncResolver implementation included in the reference implementation.

If a SyncProviderException object is thrown, an application may use this method to generate a SyncResolver object with which to resolve the conflict or conflicts that caused the exception to be thrown.

return
the SyncResolver object set for this SyncProviderException object or, if none has been set, an instance of the default SyncResolver implementation. In addition, the default SyncResolver implementation is also returned if the SyncResolver() or SyncResolver(String) constructors are used to instantiate the SyncResolver instance.

        if (syncResolver != null) {
            return syncResolver;
        } else {
            try {
              syncResolver = new com.sun.rowset.internal.SyncResolverImpl();
            } catch (SQLException sqle) {
            }  
            return syncResolver;
        }
public voidsetSyncResolver(javax.sql.rowset.spi.SyncResolver syncResolver)
Sets the SyncResolver object for this SyncProviderException object to the one supplied. If the argument supplied is null, a call to the method getSyncResolver will return the default reference implementation of the SyncResolver interface.

param
syncResolver the SyncResolver object to be set; cannot be null
throws
IllegalArgumentException if the SyncResolver object is null.
see
#getSyncResolver

        if (syncResolver == null) {
            throw new IllegalArgumentException("Cannot set a null SyncResolver " +
                "object");
        } else {
            this.syncResolver = syncResolver;
        }