Index: org/postgresql/jdbc2/AbstractJdbc2Statement.java
===================================================================
RCS file: /cvsroot/jdbc/pgjdbc/org/postgresql/jdbc2/AbstractJdbc2Statement.java,v
retrieving revision 1.114
diff -u -r1.114 AbstractJdbc2Statement.java
--- org/postgresql/jdbc2/AbstractJdbc2Statement.java	27 May 2009 23:55:19 -0000	1.114
+++ org/postgresql/jdbc2/AbstractJdbc2Statement.java	6 Aug 2009 13:11:03 -0000
@@ -1229,6 +1229,35 @@
     }
 
     /*
+     * Set a parameter to a java.lang.BigInteger value.  The driver
+     * converts this to the narrowest integer representation available
+     * when it sends it to the database.
+     *
+     * <b>This is an extension to the JDBC API!</b>
+     *
+     * @param parameterIndex the first parameter is 1...
+     * @param x the parameter value
+     * @exception SQLException if a database access error occurs
+     */
+    private void setBigInteger(int parameterIndex, BigInteger x) throws SQLException
+    {
+        checkClosed();
+        if (x == null)
+            setNull(parameterIndex, Types.DECIMAL);
+        else {
+	    int bl = x.bitLength();
+	    if (bl < 16)
+		bindLiteral(parameterIndex, x.toString(), Oid.INT2);
+	    else if (bl < 32)
+		bindLiteral(parameterIndex, x.toString(), Oid.INT4);
+	    else if (bl < 64)
+		bindLiteral(parameterIndex, x.toString(), Oid.INT8);
+	    else
+		bindLiteral(parameterIndex, x.toString(), Oid.NUMERIC);
+	}
+    }
+
+    /*
      * Set a parameter to a java.lang.BigDecimal value.  The driver
      * converts this to a SQL NUMERIC value when it sends it to the
      * database.
@@ -1736,6 +1765,8 @@
             setString(parameterIndex, (String)x);
         else if (x instanceof BigDecimal)
             setBigDecimal(parameterIndex, (BigDecimal)x);
+        else if (x instanceof BigInteger)
+            setBigInteger(parameterIndex, (BigInteger)x);
         else if (x instanceof Short)
             setShort(parameterIndex, ((Short)x).shortValue());
         else if (x instanceof Integer)