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CloudGraph(tm) is a suite of Service Data Object (SDO) 2.1 services designed for relational and big-table style "cloud" databases, such as HBase and others.

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/**
 *        CloudGraph Community Edition (CE) License
 * 
 * This is a community release of CloudGraph, a dual-license suite of
 * Service Data Object (SDO) 2.1 services designed for relational and 
 * big-table style "cloud" databases, such as HBase and others. 
 * This particular copy of the software is released under the 
 * version 2 of the GNU General Public License. CloudGraph was developed by 
 * TerraMeta Software, Inc.
 * 
 * Copyright (c) 2013, TerraMeta Software, Inc. All rights reserved.
 * 
 * General License information can be found below.
 * 
 * This distribution may include materials developed by third
 * parties. For license and attribution notices for these
 * materials, please refer to the documentation that accompanies
 * this distribution (see the "Licenses for Third-Party Components"
 * appendix) or view the online documentation at 
 * . 
 */
package org.cloudgraph.state;

import java.util.NoSuchElementException;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.commons.pool2.impl.GenericObjectPool;
import org.apache.commons.pool2.impl.GenericObjectPoolConfig;

/**
 * Marshalling context which uses new commons pool2 for pooling of
 * non validating data binding instances. 
 * 
 * @author Scott Cinnamond
 * @since 0.6.2
 * 
 * @see StateNonValidatingDataBinding
 * @see StateMarshalingContext
 */
public class PooledStateMarshallingContext implements StateMarshalingContext {
    private static Log log = LogFactory.getLog(PooledStateMarshallingContext.class);
	private GenericObjectPool pool;
	
	@SuppressWarnings("unused")
	private PooledStateMarshallingContext() {}
	public PooledStateMarshallingContext(GenericObjectPoolConfig config, 
			StateDataBindingFactory factory) {
		if (log.isDebugEnabled())
		    log.debug("initializing data binding pool...");
		this.pool = new GenericObjectPool(factory);
	}
	
	/* (non-Javadoc)
	 * @see org.cloudgraph.state.StateMarshalingContext#getBinding()
	 */
	@Override
	public NonValidatingDataBinding getBinding() {
		try {
			return this.pool.borrowObject();
		} catch (Exception e) {
			throw new StateException(e);
		}
	}
	
	/* (non-Javadoc)
	 * @see org.cloudgraph.state.StateMarshalingContext#returnDataBinding(org.cloudgraph.state.NonValidatingDataBinding)
	 */
	@Override
	public void returnBinding(NonValidatingDataBinding binding) {
		this.pool.returnObject((StateNonValidatingDataBinding)binding);
	}
	
}