/*
* GeoTools - The Open Source Java GIS Toolkit
* http://geotools.org
*
* (C) 2008, Open Source Geospatial Foundation (OSGeo)
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation;
* version 2.1 of the License.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*/
package org.geotools.data;
/**
* A request for a Lock that last the duration of a transaction.
*
* <p>
* The single instance of this class is available as
* <code>FeatureLock.TRANSACTION</code>.
* </p>
*
* @source $URL$
*/
class CurrentTransactionLock extends FeatureLock {
CurrentTransactionLock() {
super( null, -1 );
}
/**
* Transaction locks do not require Authorization.
*
* <p>
* Authorization is based on being on "holding" the Transaction rather than
* supplying an authorization id.
* </p>
*
* @return <code>CURRENT_TRANSACTION</code> to aid in debugging.
*
* @see org.geotools.data.FeatureLock#getAuthorization()
*/
public String getAuthorization() {
return toString();
}
/**
* Transaciton locks are not held for a duration.
*
* <p>
* Any locking performed against the current Transaction is expected to
* expire when the transaction finishes with a close or rollback
* </p>
*
* @return <code>-1</code> representing an invalid duration
*
* @see org.geotools.data.FeatureLock#getDuration()
*/
public long getDuration() {
return -1;
}
public String toString() {
return "CURRENT_TRANSACTION";
}
}