org.geotools.data
Class TransactionStateDiff

java.lang.Object
  org.geotools.data.TransactionStateDiff

All Implemented Interfaces:

Transaction.State

public class TransactionStateDiff

extends java.lang.Object

implements Transaction.State

A Transaction.State that keeps a difference table for use with AbstractDataStore.

Author:

Jody Garnett, Refractions Research

Constructor Summary

TransactionStateDiff(AbstractDataStore dataStore)

Method Summary

void	addAuthorization(java.lang.String AuthID) Call back used for Transaction.setAuthorization()
void	commit() Will apply differences to store.
java.util.Map	diff(java.lang.String typeName)
FeatureReader	reader(java.lang.String typeName) Convience Method for a Transaction based FeatureReader.
void	rollback() Call back used for Transaction.rollback()
void	setTransaction(Transaction transaction) Provides configuration information for Transaction.State setTransaction is called with non null transaction when Transaction.State is putState into a Transaction.
FeatureWriter	writer(java.lang.String typeName, Filter filter) Convience Method for a Transaction based FeatureWriter Constructs a DiffFeatureWriter that works against this Transaction.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

TransactionStateDiff

public TransactionStateDiff(AbstractDataStore dataStore)

Method Detail

setTransaction

public void setTransaction(Transaction transaction)

Description copied from interface: Transaction.State

Provides configuration information for Transaction.State

setTransaction is called with non null transaction when Transaction.State is putState into a Transaction. This tranasction will be used to determine correct event notification.

setTransaction is called with null when removeState is called (usually during Transaction.close() ).

Specified by:

setTransaction in interface Transaction.State

Parameters:

transaction -

diff

public java.util.Map diff(java.lang.String typeName)
                   throws java.io.IOException

Throws:

java.io.IOException

addAuthorization

public void addAuthorization(java.lang.String AuthID)
                      throws java.io.IOException

Description copied from interface: Transaction.State

Call back used for Transaction.setAuthorization()

Specified by:

addAuthorization in interface Transaction.State

Throws:

java.io.IOException

See Also:

Transaction.State.addAuthorization(java.lang.String)

commit

public void commit()
            throws java.io.IOException

Will apply differences to store.

Specified by:

commit in interface Transaction.State

Throws:

java.io.IOException

See Also:

Transaction.State.commit()

rollback

public void rollback()
              throws java.io.IOException

Description copied from interface: Transaction.State

Call back used for Transaction.rollback()

Specified by:

rollback in interface Transaction.State

Throws:

java.io.IOException

See Also:

Transaction.State.rollback()

reader

public FeatureReader reader(java.lang.String typeName)
                     throws java.io.IOException

Convience Method for a Transaction based FeatureReader.

Constructs a DiffFeatureReader that works against this Transaction.

Parameters:

typeName - TypeName to aquire a Reader on

Returns:

FeatureReader the mask orgional contents with against the current Differences recorded by the Tansasction State

Throws:

java.io.IOException - If typeName is not Manged by this Tansaction State

writer

public FeatureWriter writer(java.lang.String typeName,
                            Filter filter)
                     throws java.io.IOException

Convience Method for a Transaction based FeatureWriter

Constructs a DiffFeatureWriter that works against this Transaction.

Parameters:

typeName - Type Name to record differences against

filter -

Returns:

A FeatureWriter that records Differences against a FeatureReader

Throws:

java.io.IOException - If a FeatureRader could not be constucted to record differences against