Spring Framework example source code file (MappingCommAreaOperation.java)

This example Spring Framework source code file (MappingCommAreaOperation.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Java - Spring Framework tags/keywords

commarearecord, commarearecord, dataaccessexception, dataaccessexception, dataretrievalfailureexception, i/o, interactionspec, io, ioexception, ioexception, mappingcommareaoperation, mappingrecordoperation, object, object, record

The Spring Framework MappingCommAreaOperation.java source code

/*
 * Copyright 2002-2005 the original author or authors.
 * 
 * Licensed 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.springframework.jca.cci.object;

import java.io.IOException;

import javax.resource.cci.ConnectionFactory;
import javax.resource.cci.InteractionSpec;
import javax.resource.cci.Record;
import javax.resource.cci.RecordFactory;

import org.springframework.dao.DataAccessException;
import org.springframework.dao.DataRetrievalFailureException;
import org.springframework.jca.cci.core.support.CommAreaRecord;

/**
 * EIS operation object for access to COMMAREA records.
 * Subclass of the generic MappingRecordOperation class.
 *
 * @author Thierry Templier
 * @since 1.2
 */
public abstract class MappingCommAreaOperation extends MappingRecordOperation {

	/**
	 * Create a new MappingCommAreaQuery.
	 * @see #setConnectionFactory
	 * @see #setInteractionSpec
	 */
	public MappingCommAreaOperation() {
	}

	/**
	 * Create a new MappingCommAreaQuery.
	 * @param connectionFactory ConnectionFactory to use to obtain connections
	 * @param interactionSpec specification to configure the interaction
	 */
	public MappingCommAreaOperation(ConnectionFactory connectionFactory, InteractionSpec interactionSpec) {
		super(connectionFactory, interactionSpec);
	}


	protected final Record createInputRecord(RecordFactory recordFactory, Object inObject) {
		try {
			return new CommAreaRecord(objectToBytes(inObject));
		}
		catch (IOException ex) {
			throw new DataRetrievalFailureException("I/O exception during bytes conversion", ex);
		}
	}

	protected final Object extractOutputData(Record record) throws DataAccessException {
		CommAreaRecord commAreaRecord = (CommAreaRecord) record;
		try {
			return bytesToObject(commAreaRecord.toByteArray());
		}
		catch (IOException ex) {
			throw new DataRetrievalFailureException("I/O exception during bytes conversion", ex);
		}
	}


	/**
	 * Method used to convert an object into COMMAREA bytes.
	 * @param inObject the input data
	 * @return the COMMAREA's bytes
	 * @throws IOException if thrown by I/O methods
	 * @throws DataAccessException if conversion failed
	 */
	protected abstract byte[] objectToBytes(Object inObject) throws IOException, DataAccessException;

	/**
	 * Method used to convert the COMMAREA's bytes to an object.
	 * @param bytes the COMMAREA's bytes
	 * @return the output data
	 * @throws IOException if thrown by I/O methods
	 * @throws DataAccessException if conversion failed
	 */
	protected abstract Object bytesToObject(byte[] bytes) throws IOException, DataAccessException;

}