/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.jena.sparql.core;
import org.apache.jena.query.ReadWrite ;
/** Interface that encapulsated begin/abort|commit/close.
* <p>The read lifcycle is:
* <pre> begin(READ) ... end()</pre>
* <p>The write lifcycle is:
* <pre> begin(WRITE) ... abort() or commit() [end()]</pre>
* <p>{@code end()} is optional, but encouraged; it performs checks and can be called multiple times.
*
*/
public interface Transactional
{
/** Start either a READ or WRITE transaction */
public void begin(ReadWrite readWrite) ;
/** Commit a transaction - finish the transaction and make any changes permanent (if a "write" transaction) */
public void commit() ;
/** Abort a transaction - finish the transaction and undo any changes (if a "write" transaction) */
public void abort() ;
/** Finish the transaction - if a write transaction and commit() has not been called, then abort */
public void end() ;
/** Say whether inside a transaction. */
public boolean isInTransaction() ;
}