Some more updates...

Fri Feb 17 15:11:00 GMT 2001 peter@retep.org.uk
        - Reduced the object overhead in PreparedStatement by reusing the same
          StringBuffer object throughout. Similarly SimpleDateStamp's are alse
          reused in a thread save manner.
        - Implemented in PreparedStatement: setNull(), setDate/Time/Timestamp
          using Calendar, setBlob(), setCharacterStream()
        - Clob's are now implemented in ResultSet & PreparedStatement!
        - Implemented a lot of DatabaseMetaData & ResultSetMetaData methods.
          We have about 18 unimplemented methods left in JDBC2 at the current
          time.

src/interfaces/jdbc/org/postgresql/largeobject/PGclob.java

@@ -0,0 +1,70 @@
+package org.postgresql.largeobject;
+
+// IMPORTANT NOTE: This file implements the JDBC 2 version of the driver.
+// If you make any modifications to this file, you must make sure that the
+// changes are also made (if relevent) to the related JDBC 1 class in the
+// org.postgresql.jdbc1 package.
+
+
+import java.lang.*;
+import java.io.*;
+import java.math.*;
+import java.text.*;
+import java.util.*;
+import java.sql.*;
+import org.postgresql.Field;
+import org.postgresql.largeobject.*;
+import org.postgresql.largeobject.*;
+
+/**
+ * This implements the Blob interface, which is basically another way to
+ * access a LargeObject.
+ *
+ * $Id: PGclob.java,v 1.1 2001/02/16 16:45:01 peter Exp $
+ *
+ */
+public class PGclob implements java.sql.Clob
+{
+    private org.postgresql.Connection conn;
+    private int oid;
+    private LargeObject lo;
+
+    public PGclob(org.postgresql.Connection conn,int oid) throws SQLException {
+	this.conn=conn;
+	this.oid=oid;
+	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 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();
+    }
+
+}