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.io.ByteArrayOutputStream;
020import java.io.IOException;
021import java.io.InputStream;
022import java.sql.PreparedStatement;
023import java.sql.ResultSet;
024import java.sql.SQLException;
025
026import org.apache.activemq.util.ByteArrayInputStream;
027
028/**
029 * This JDBCAdapter inserts and extracts BLOB data using the
030 * setBinaryStream()/getBinaryStream() operations.
031 * 
032 * The databases/JDBC drivers that use this adapter are:
033 * <ul>
034 * <li>Axion</li>
035 * </ul>
036 * 
037 * @org.apache.xbean.XBean element="streamJDBCAdapter"
038 * 
039 * 
040 */
041public class StreamJDBCAdapter extends DefaultJDBCAdapter {
042
043    /**
044     * @see org.apache.activemq.store.jdbc.adapter.DefaultJDBCAdapter#getBinaryData(java.sql.ResultSet,
045     *      int)
046     */
047    protected byte[] getBinaryData(ResultSet rs, int index) throws SQLException {
048
049        try {
050            InputStream is = rs.getBinaryStream(index);
051            ByteArrayOutputStream os = new ByteArrayOutputStream(1024 * 4);
052
053            int ch;
054            while ((ch = is.read()) >= 0) {
055                os.write(ch);
056            }
057            is.close();
058            os.close();
059
060            return os.toByteArray();
061        } catch (IOException e) {
062            throw (SQLException)new SQLException("Error reading binary parameter: " + index).initCause(e);
063        }
064    }
065
066    /**
067     * @see org.apache.activemq.store.jdbc.adapter.DefaultJDBCAdapter#setBinaryData(java.sql.PreparedStatement,
068     *      int, byte[])
069     */
070    protected void setBinaryData(PreparedStatement s, int index, byte[] data) throws SQLException {
071        s.setBinaryStream(index, new ByteArrayInputStream(data), data.length);
072    }
073
074}