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/*
Derby - Class org.apache.derbyTesting.functionTests.tests.compatibility.helpers.DummyClob
Licensed to the Apache Software Foundation (ASF) under one or more
contributor license agreements. See the NOTICE file distributed with
this work for additional information regarding copyright ownership.
The ASF licenses this file to you under the Apache License, Version 2.0
(the "License"); you may not use this file except in compliance with
the License. You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
package org.apache.derbyTesting.functionTests.tests.compatibility.helpers;
import java.io.ByteArrayInputStream;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.Reader;
import java.io.StringReader;
import java.io.Writer;
import java.sql.Clob;
import java.sql.SQLException;
/**
* A crude Clob implementation for datatype testing.
*/
public class DummyClob
implements Clob {
private String _contents;
public DummyClob(String contents)
{
_contents = contents;
}
public InputStream getAsciiStream()
{
try {
return new ByteArrayInputStream( _contents.getBytes( "UTF-8" ) );
}
catch (Exception e) { return null; }
}
public Reader getCharacterStream()
{
return new StringReader(_contents);
}
public String getSubString( long position, int length )
{
return _contents.substring( (int) position -1, length );
}
public long length() { return (long) _contents.length(); }
public long position( Clob searchstr, long start ) { return 0L; }
public long position( String searchstr, long start ) { return 0L; }
public boolean equals( Object other )
{
if ( other == null ) { return false; }
if ( !( other instanceof Clob ) ) { return false; }
Clob that = (Clob) other;
try {
if ( this.length() != that.length() ) { return false; }
InputStream thisStream = this.getAsciiStream();
InputStream thatStream = that.getAsciiStream();
while( true )
{
int nextByte = thisStream.read();
if ( nextByte < 0 ) { break; }
if ( nextByte != thatStream.read() ) { return false; }
}
}
catch (Exception e)
{
System.err.println( e.getMessage() );
e.printStackTrace(System.err);
return false;
}
return true;
}
public int setString(long arg0, String arg1) throws SQLException {
throw new SQLException("not implemented for this test");
}
public int setString(long arg0, String arg1, int arg2, int arg3) throws SQLException {
throw new SQLException("not implemented for this test");
}
public OutputStream setAsciiStream(long arg0) throws SQLException {
throw new SQLException("not implemented for this test");
}
public Writer setCharacterStream(long arg0) throws SQLException {
throw new SQLException("not implemented for this test");
}
public void truncate(long arg0) throws SQLException {
throw new SQLException("not implemented for this test");
}
public void free() throws SQLException {
_contents = null;
}
public Reader getCharacterStream(long pos, long length) throws SQLException {
return new StringReader(
_contents.substring((int)pos -1, (int)(pos + length)));
}
}
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