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/*-------------------------------------------------------------------------
*
* Copyright (c) 2004-2005, PostgreSQL Global Development Group
*
* IDENTIFICATION
* $PostgreSQL: pgjdbc/org/postgresql/jdbc2/AbstractJdbc2Clob.java,v 1.8 2005/02/15 08:56:25 jurka Exp $
*
*-------------------------------------------------------------------------
*/
package org.postgresql.jdbc2;
import org.postgresql.PGConnection;
import org.postgresql.largeobject.LargeObject;
import org.postgresql.largeobject.LargeObjectManager;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.Reader;
import java.sql.Clob;
import java.sql.SQLException;
public class AbstractJdbc2Clob
{
private LargeObject lo;
public AbstractJdbc2Clob(PGConnection conn, int oid) throws SQLException
{
LargeObjectManager lom = conn.getLargeObjectAPI();
this.lo = lom.open(oid);
}
public long length() throws SQLException
{
return lo.size();
}
public InputStream getAsciiStream() throws SQLException
{
return lo.getInputStream();
}
public Reader getCharacterStream() throws SQLException
{
return new InputStreamReader(lo.getInputStream());
}
public String getSubString(long i, int j) throws SQLException
{
lo.seek((int)i - 1);
return new String(lo.read(j));
}
/*
* For now, this is not implemented.
*/
public long position(String pattern, long start) throws SQLException
{
throw org.postgresql.Driver.notImplemented(this.getClass(), "position(String,long)");
}
/*
* This should be simply passing the byte value of the pattern Blob
*/
public long position(Clob pattern, long start) throws SQLException
{
throw org.postgresql.Driver.notImplemented(this.getClass(), "position(Clob,start)");
}
}
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