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Viewing changes to src/interfaces/jdbc/org/postgresql/jdbc2/AbstractJdbc2Blob.java

  • Committer: Bazaar Package Importer
  • Author(s): Arnaud Vandyck
  • Date: 2005-04-21 14:25:11 UTC
  • mfrom: (1.2.1 upstream) (2.1.1 warty)
  • Revision ID: james.westby@ubuntu.com-20050421142511-wibh5vc31fkrorx7
Tags: 7.4.7-3
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src/interfaces/jdbc/org/postgresql/jdbc2/AbstractJdbc2Blob.java
 
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package org.postgresql.jdbc2;
 
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import org.postgresql.PGConnection;
 
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import org.postgresql.largeobject.LargeObject;
 
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import org.postgresql.largeobject.LargeObjectManager;
 
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import java.io.InputStream;
 
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import java.sql.Blob;
 
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import java.sql.SQLException;
 
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public abstract class AbstractJdbc2Blob
 
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{
 
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        private int oid;
 
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        private LargeObject lo;
 
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        public AbstractJdbc2Blob(PGConnection conn, int oid) throws SQLException
 
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        {
 
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                this.oid = oid;
 
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                LargeObjectManager lom = conn.getLargeObjectAPI();
 
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                this.lo = lom.open(oid);
 
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        }
 
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        public long length() throws SQLException
 
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        {
 
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                return lo.size();
 
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        }
 
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        public InputStream getBinaryStream() throws SQLException
 
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        {
 
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                return lo.getInputStream();
 
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        }
 
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        public byte[] getBytes(long pos, int length) throws SQLException
 
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        {
 
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                lo.seek((int)pos, LargeObject.SEEK_SET);
 
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                return lo.read(length);
 
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        }
 
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        /*
 
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         * For now, this is not implemented.
 
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         */
 
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        public long position(byte[] pattern, long start) throws SQLException
 
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        {
 
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                throw org.postgresql.Driver.notImplemented();
 
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        }
 
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        /*
 
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         * This should be simply passing the byte value of the pattern Blob
 
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         */
 
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        public long position(Blob pattern, long start) throws SQLException
 
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        {
 
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                return position(pattern.getBytes(0, (int)pattern.length()), start);
 
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        }
 
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}