001/**
002 * Licensed to the Apache Software Foundation (ASF) under one or more
003 * contributor license agreements.  See the NOTICE file distributed with
004 * this work for additional information regarding copyright ownership.
005 * The ASF licenses this file to You under the Apache License, Version 2.0
006 * (the "License"); you may not use this file except in compliance with
007 * the License.  You may obtain a copy of the License at
008 *
009 *      http://www.apache.org/licenses/LICENSE-2.0
010 *
011 * Unless required by applicable law or agreed to in writing, software
012 * distributed under the License is distributed on an "AS IS" BASIS,
013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014 * See the License for the specific language governing permissions and
015 * limitations under the License.
016 */
017package org.apache.activemq.store.jdbc.adapter;
018
019import java.sql.Blob;
020import java.sql.ResultSet;
021import java.sql.SQLException;
022import org.apache.activemq.store.jdbc.Statements;
023
024/**
025 * Implements all the default JDBC operations that are used
026 * by the JDBCPersistenceAdapter.
027 * <p/>
028 * Subclassing is encouraged to override the default
029 * implementation of methods to account for differences
030 * in JDBC Driver implementations.
031 * <p/>
032 * The JDBCAdapter inserts and extracts BLOB data using the
033 * getBytes()/setBytes() operations.
034 * <p/>
035 * The databases/JDBC drivers that use this adapter are:
036 * <ul>
037 * <li></li>
038 * </ul>
039 *
040 * @org.apache.xbean.XBean element="oracleBlobJDBCAdapter"
041 *
042 * 
043 */
044public class OracleBlobJDBCAdapter extends BlobJDBCAdapter {
045
046    @Override
047    public void setStatements(Statements statements) {
048        statements.setLongDataType("NUMBER");
049        statements.setSequenceDataType("NUMBER");
050
051        String addMessageStatement = "INSERT INTO "
052            + statements.getFullMessageTableName()
053            + "(ID, MSGID_PROD, MSGID_SEQ, CONTAINER, EXPIRATION, PRIORITY, MSG) VALUES (?, ?, ?, ?, ?, ?, empty_blob())";
054        statements.setAddMessageStatement(addMessageStatement);
055
056        String findMessageByIdStatement = "SELECT MSG FROM " +
057                statements.getFullMessageTableName() + " WHERE ID=? FOR UPDATE";
058        statements.setFindMessageByIdStatement(findMessageByIdStatement);
059
060        super.setStatements(statements);
061    }
062
063    @Override
064    protected byte[] getBinaryData(ResultSet rs, int index) throws SQLException {
065        // Get as a BLOB
066        Blob aBlob = rs.getBlob(index);
067        if (aBlob == null) {
068            return null;
069        }
070        return aBlob.getBytes(1, (int) aBlob.length());
071    }
072}