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     */
017    package org.apache.servicemix.jdbc.adapter;
018    
019    import java.io.ByteArrayInputStream;
020    import java.io.ByteArrayOutputStream;
021    import java.io.IOException;
022    import java.io.InputStream;
023    import java.sql.PreparedStatement;
024    import java.sql.ResultSet;
025    import java.sql.SQLException;
026    
027    /**
028     * This JDBCAdapter inserts and extracts BLOB data using the 
029     * setBinaryStream()/getBinaryStream() operations.
030     * 
031     * The databases/JDBC drivers that use this adapter are:
032     * <ul>
033     * <li>Axion</li> 
034     * </ul>
035     * 
036     * @org.apache.xbean.XBean element="streamJDBCAdapter"
037     * 
038     * @version $Revision: 1.2 $
039     */
040    public class StreamJDBCAdapter extends DefaultJDBCAdapter {
041    
042        /**
043         * @see org.apache.activemq.store.jdbc.adapter.DefaultJDBCAdapter#getBinaryData(java.sql.ResultSet, int)
044         */
045        protected byte[] getBinaryData(ResultSet rs, int index) throws SQLException {
046    
047            try {
048                InputStream is = rs.getBinaryStream(index);
049                ByteArrayOutputStream os = new ByteArrayOutputStream(1024 * 4);
050                int ch = is.read();
051                while (ch >= 0) {
052                    os.write(ch);
053                    ch = is.read();
054                }
055                is.close();
056                os.close();
057                return os.toByteArray();
058            } catch (IOException e) {
059                throw (SQLException) new SQLException("Error reading binary parameter: " + index).initCause(e);
060            }
061        }
062    
063        /**
064         * @see org.apache.activemq.store.jdbc.adapter.DefaultJDBCAdapter#setBinaryData(java.sql.PreparedStatement, int, byte[])
065         */
066        protected void setBinaryData(PreparedStatement s, int index, byte[] data) throws SQLException {
067            s.setBinaryStream(index, new ByteArrayInputStream(data), data.length);
068        }
069    
070    }