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 */
018package org.apache.oozie.executor.jpa;
019
020import org.apache.oozie.StringBlob;
021import org.apache.openjpa.jdbc.kernel.JDBCStore;
022import org.apache.openjpa.jdbc.meta.ValueMapping;
023
024@SuppressWarnings("serial")
025public class StringBlobValueHandler extends org.apache.openjpa.jdbc.meta.strats.ByteArrayValueHandler {
026
027    private static final StringBlobValueHandler _instance = new StringBlobValueHandler();
028
029    /**
030     * Singleton instance.
031     */
032    public static StringBlobValueHandler getInstance() {
033        return _instance;
034    }
035
036    public Object toDataStoreValue(ValueMapping vm, Object val, JDBCStore store) {
037        if (val == null) {
038            return null;
039        }
040        return ((StringBlob) val).getRawBlob();
041    }
042
043    public Object toObjectValue(ValueMapping vm, Object val) {
044        if (val == null) {
045            return null;
046        }
047        return new StringBlob((byte[]) val);
048    }
049}