dirkv 02/01/02 13:16:48
Added: src/stores/slidestore/reference/util
JDBCAwareInputStream.java
Log:
helper class to solve bug 5582
submitted by Chris Kimpton
Revision Changes Path
1.1
jakarta-slide/src/stores/slidestore/reference/util/JDBCAwareInputStream.java
Index: JDBCAwareInputStream.java
===================================================================
/*
* $Header:
/home/cvs/jakarta-slide/src/stores/slidestore/reference/util/JDBCAwareInputStream.java,v
1.1 2002/01/02 21:16:48 dirkv Exp $
* $Revision: 1.1 $
* $Date: 2002/01/02 21:16:48 $
*
* ====================================================================
*
* The Apache Software License, Version 1.1
*
* Copyright (c) 1999 The Apache Software Foundation. All rights
* reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* 3. The end-user documentation included with the redistribution, if
* any, must include the following acknowlegement:
* "This product includes software developed by the
* Apache Software Foundation (http://www.apache.org/)."
* Alternately, this acknowlegement may appear in the software itself,
* if and wherever such third-party acknowlegements normally appear.
*
* 4. The names "The Jakarta Project", "Tomcat", and "Apache Software
* Foundation" must not be used to endorse or promote products derived
* from this software without prior written permission. For written
* permission, please contact [EMAIL PROTECTED]
*
* 5. Products derived from this software may not be called "Apache"
* nor may "Apache" appear in their names without prior written
* permission of the Apache Group.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
* ====================================================================
*
* This software consists of voluntary contributions made by many
* individuals on behalf of the Apache Software Foundation. For more
* information on the Apache Software Foundation, please see
* <http://www.apache.org/>.
*
* [Additional notices, if required by prior licensing conditions]
*
*/
package slidestore.reference.util;
import java.io.InputStream;
import java.sql.Statement;
import java.io.IOException;
/**
* Wrapper for an input stream that has come from a JDBC connection.
* This wrapper also closes the underlying JDBC result set - freeing
* precious system resource - or at least Oracle cursors ;-)
*
* @author <a href="mailto:[EMAIL PROTECTED]";>Chris Kimpton</a>
* @version $Revision: 1.1 $
*/
public class JDBCAwareInputStream extends InputStream {
/** This input stream will be used to answer all method calls */
private InputStream _underlyingInputStream = null;
/** This jdbc statement will be closed, along with its result set
when the input stream is told to close itself */
private Statement _relatedJDBCStatement = null;
/**
* This input stream will be used to answer all method calls.
* This jdbc statement will be closed, along with its result set
* when the input stream is told to close itself.
*/
public JDBCAwareInputStream(InputStream is, Statement stmt)
{
_underlyingInputStream = is;
_relatedJDBCStatement = stmt;
}
public int read() throws IOException {
return _underlyingInputStream.read();
}
public int read(byte b[], int off, int len) throws IOException {
return _underlyingInputStream.read(b,off,len);
}
public int read(byte b[]) throws IOException {
return _underlyingInputStream.read(b);
}
public synchronized void mark(int readlimit) {
_underlyingInputStream.mark(readlimit);
}
public long skip(long n) throws IOException {
return _underlyingInputStream.skip(n);
}
public int available() throws IOException {
return _underlyingInputStream.available();
}
public void close() throws IOException {
if (_underlyingInputStream != null) {
_underlyingInputStream.close();
if (_relatedJDBCStatement != null) {
try {
_relatedJDBCStatement.close();
_relatedJDBCStatement.getResultSet().close();
} catch (java.sql.SQLException sqle) {
throw new IOException(sqle.getMessage());
}
_relatedJDBCStatement = null;
}
_underlyingInputStream = null;
}
}
public synchronized void reset() throws IOException {
_underlyingInputStream.reset();
}
public boolean markSupported() {
return _underlyingInputStream.markSupported();
}
}
--
To unsubscribe, e-mail: <mailto:[EMAIL PROTECTED]>
For additional commands, e-mail: <mailto:[EMAIL PROTECTED]>
