001/**
002 * Licensed to the Apache Software Foundation (ASF) under one
003 * or more contributor license agreements.  See the NOTICE file
004 * distributed with this work for additional information
005 * regarding copyright ownership.  The ASF licenses this file
006 * to you under the Apache License, Version 2.0 (the
007 * "License"); you may not use this file except in compliance
008 * with the License.  You may obtain a copy of the License at
009 *
010 *      http://www.apache.org/licenses/LICENSE-2.0
011 *
012 * Unless required by applicable law or agreed to in writing, software
013 * distributed under the License is distributed on an "AS IS" BASIS,
014 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
015 * See the License for the specific language governing permissions and
016 * limitations under the License.
017 */
018
019package org.apache.oozie.executor.jpa;
020
021import org.apache.oozie.StringBlob;
022import org.apache.openjpa.jdbc.kernel.JDBCStore;
023import org.apache.openjpa.jdbc.meta.ValueMapping;
024
025@SuppressWarnings("serial")
026public class StringBlobValueHandler extends org.apache.openjpa.jdbc.meta.strats.ByteArrayValueHandler {
027
028    private static final StringBlobValueHandler _instance = new StringBlobValueHandler();
029
030    /**
031     * Singleton instance.
032     */
033    public static StringBlobValueHandler getInstance() {
034        return _instance;
035    }
036
037    public Object toDataStoreValue(ValueMapping vm, Object val, JDBCStore store) {
038        if (val == null) {
039            return null;
040        }
041        return ((StringBlob) val).getRawBlob();
042    }
043
044    public Object toObjectValue(ValueMapping vm, Object val) {
045        if (val == null) {
046            return null;
047        }
048        return new StringBlob((byte[]) val);
049    }
050}