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56 lines
1.2 KiB
56 lines
1.2 KiB
package org.postgresql.jdbc2;
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import java.lang.*;
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import java.io.*;
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import java.math.*;
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import java.text.*;
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import java.util.*;
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import java.sql.*;
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import org.postgresql.PGConnection;
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import org.postgresql.largeobject.*;
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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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}
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