Applied patch from Teofilis Martisius to improve performance.

Also removed some unused files and fixed the which needed a small change
after the previous patch to build.xml.

 Modified Files:
 	jdbc/Makefile jdbc/org/postgresql/core/Encoding.java
 	jdbc/org/postgresql/jdbc1/AbstractJdbc1Connection.java
 Removed Files:
 	jdbc/utils/CheckVersion.java jdbc/utils/buildDriver
 	jdbc/utils/changelog.pl

src/interfaces/jdbc/Makefile

@@ -4,7 +4,7 @@
 #
 # Copyright (c) 2001, PostgreSQL Global Development Group
 #
-# $Header: /cvsroot/pgsql/src/interfaces/jdbc/Attic/Makefile,v 1.35 2002/07/23 03:59:54 barry Exp $
+# $Header: /cvsroot/pgsql/src/interfaces/jdbc/Attic/Makefile,v 1.36 2002/10/20 02:55:50 barry Exp $
 #
 #-------------------------------------------------------------------------
 
@@ -29,7 +29,7 @@ install: installdirs
 	  -Dinstall.directory=$(javadir) $(properties)
 
 installdirs:
-	$(mkinstalldirs) $(javadir)
+	$(mkinstalldirs) $(javadir) 
 
 uninstall:
 	$(ANT) -buildfile $(srcdir)/build.xml uninstall \
@@ -39,4 +39,4 @@ clean distclean maintainer-clean:
 	$(ANT) -buildfile $(srcdir)/build.xml clean
 
 check: all
-	$(ANT) -buildfile $(srcdir)/build.xml test
+	$(ANT) -buildfile $(srcdir)/build.xml test $(properties)

src/interfaces/jdbc/org/postgresql/core/Encoding.java

@@ -8,7 +8,7 @@ import org.postgresql.util.*;
 /*
  * Converts to and from the character encoding used by the backend.
  *
- * $Id: Encoding.java,v 1.6 2002/09/06 21:23:05 momjian Exp $
+ * $Id: Encoding.java,v 1.7 2002/10/20 02:55:50 barry Exp $
  */
 
 public class Encoding
@@ -161,6 +161,9 @@ public class Encoding
 			}
 			else
 			{
+				if (encoding.equals("UTF-8")) {
+					return decodeUTF8(encodedString, offset, length);
+				}
 				return new String(encodedString, offset, length, encoding);
 			}
 		}
@@ -223,4 +226,44 @@ public class Encoding
 			return false;
 		}
 	}
+
+	/**
+	 * custom byte[] -> String conversion routine, 3x-10x faster than
+	 * standard new String(byte[])
+	 */
+	private static final int pow2_6 = 64;		// 26
+	private static final int pow2_12 = 4096;	// 212
+	private static char[] cdata = new char[50];
+
+	private synchronized String decodeUTF8(byte data[], int offset, int length) {
+		char[] l_cdata = cdata;
+		if (l_cdata.length < (length-offset)) {
+			l_cdata = new char[length-offset];
+		}
+		int i = offset;
+		int j = 0;
+		int z, y, x, val;
+		while (i < length) {
+			z = data[i] & 0xFF;
+			if (z < 0x80) {
+				l_cdata[j++] = (char)data[i];
+				i++;
+			} else if (z >= 0xE0) {		// length == 3
+				y = data[i+1] & 0xFF;
+				x = data[i+2] & 0xFF;
+				val = (z-0xE0)*pow2_12 + (y-0x80)*pow2_6 + (x-0x80);
+				l_cdata[j++] = (char) val;
+				i+= 3;
+			} else {		// length == 2 (maybe add checking for length > 3, throw exception if it is
+				y = data[i+1] & 0xFF;
+				val = (z - 0xC0)* (pow2_6)+(y-0x80);
+				l_cdata[j++] = (char) val;
+				i+=2;
+			} 
+		}
+	
+		String s = new String(l_cdata, 0, j);
+		return s;
+	}
+
 }

src/interfaces/jdbc/org/postgresql/jdbc1/AbstractJdbc1Connection.java

@@ -14,7 +14,7 @@ import org.postgresql.largeobject.LargeObjectManager;
 import org.postgresql.util.*;
 
 
-/* $Header: /cvsroot/pgsql/src/interfaces/jdbc/org/postgresql/jdbc1/Attic/AbstractJdbc1Connection.java,v 1.11 2002/10/17 05:33:52 barry Exp $
+/* $Header: /cvsroot/pgsql/src/interfaces/jdbc/org/postgresql/jdbc1/Attic/AbstractJdbc1Connection.java,v 1.12 2002/10/20 02:55:50 barry Exp $
  * This class defines methods of the jdbc1 specification.  This class is
  * extended by org.postgresql.jdbc2.AbstractJdbc2Connection which adds the jdbc2
  * methods.  The real Connection class (for jdbc1) is org.postgresql.jdbc1.Jdbc1Connection
@@ -367,10 +367,16 @@ public abstract class AbstractJdbc1Connection implements org.postgresql.PGConnec
 		//jdbc by default assumes autocommit is on until setAutoCommit(false)
 		//is called.  Therefore we need to ensure a new connection is 
 		//initialized to autocommit on.
+		//We also set the client encoding so that the driver only needs 
+		//to deal with utf8.  We can only do this in 7.3 because multibyte 
+		//support is now always included
 		if (haveMinimumServerVersion("7.3")) 
 		{
 			java.sql.ResultSet acRset =
-				ExecSQL("show autocommit");
+				ExecSQL("set client_encoding = 'UNICODE'; show autocommit");
+
+			//set encoding to be unicode
+			encoding = Encoding.getEncoding("UNICODE", null);
 
 			if (!acRset.next())
 			{

src/interfaces/jdbc/utils/CheckVersion.java

-package utils;
-
-/*
- * This little app checks to see what version of JVM is being used.
- * It does this by checking first the java.vm.version property, and
- * if that fails, it looks for certain classes that should be present.
- */
-public class CheckVersion
-{
-	/*
-	 * Check for the existence of a class by attempting to load it
-	 */
-	public static boolean checkClass(String c)
-	{
-		try
-		{
-			Class.forName(c);
-		}
-		catch (Exception e)
-		{
-			return false;
-		}
-		return true;
-	}
-
-	/*
-	 * This first checks java.vm.version for 1.1, 1.2 or 1.3.
-	 *
-	 * It writes jdbc1 to stdout for the 1.1.x VM.
-	 *
-	 * For 1.2 or 1.3, it checks for the existence of the javax.sql.DataSource
-	 * interface, and if found writes enterprise to stdout. If the interface
-	 * is not found, it writes jdbc2 to stdout.
-	 *
-	 * PS: It also looks for the existence of java.lang.Byte which appeared in
-	 * JDK1.1.0 incase java.vm.version is not heeded by some JVM's.
-	 *
-	 * If it can't work it out, it writes huho to stdout.
-	 *
-	 * The make file uses the written results to determine which rule to run.
-	 *
-	 * Bugs: This needs thorough testing.
-	 */
-	public static void main(String args[])
-	{
-		String vmversion = System.getProperty("java.vm.version");
-
-		System.out.println("postgresql.jdbc=" + System.getProperty("postgresql.jdbc"));
-
-		// We are running a 1.1 JVM
-		if (vmversion.startsWith("1.1"))
-		{
-			System.out.println("jdbc1");
-			//System.exit(0);
-		}
-		else
-			// We are running a 1.2 or 1.3 JVM
-			if (vmversion.startsWith("1.2") ||
-					vmversion.startsWith("1.3") ||
-					checkClass("java.lang.Byte")
-			   )
-			{
-
-				// Check to see if we have the standard extensions. If so, then
-				// we want the enterprise edition, otherwise the jdbc2 driver.
-				if (checkClass("javax.sql.DataSource"))
-					System.out.println("enterprise");
-				else
-					System.out.println("jdbc2");
-				//System.exit(0);
-			}
-		System.setProperty("postgresql.jdbc", "yoyo");
-	}
-}

src/interfaces/jdbc/utils/buildDriver

-#!/bin/sh
-#
-# $Id: buildDriver,v 1.2 2000/12/20 16:22:49 peter Exp $
-#
-# This script generates the org/postgresql/Driver.java file from the template
-# org/postgresql/Driver.java.in
-#
-# We do this because we need to include the version number from Makefile.global
-# and some other goodies.
-#
-# This used to be in Makefile, but as it's now done three times, it's better
-# to have it as a separate script.
-#
-# If you have any problems, please let us know ;-)
-#
-# Syntax: buildDriver version class
-#
-# Where:
-#	version	The version string from Makefile.global
-#	class	The class implementing java.sql.Connection
-#	edition	The driver edition being built
-#	source	The file to build. We assume that ${source}.in exists
-#
-
-VERSION=$1
-CLASS=$2
-EDITION=$3
-SOURCE=$4
-
-#---------------------------------------------------------------------------
-# Extract the version. This will work until version x.9 (and assuming we don't
-# have 7.10 etc). We only handle 1 digit for MINORVERSION to handle things like
-# 7.1devel etc
-#
-MAJORVERSION=`echo $VERSION | cut -f1 -d'.'`
-MINORVERSION=`echo $VERSION | cut -f2 -d'.' | cut -c1`
-
-#---------------------------------------------------------------------------
-# Now finally build the driver
-sed \
-	-e "s/@JDBCCONNECTCLASS@/$CLASS/g" \
-	-e "s/@VERSION@/$VERSION $EDITION/g" \
-	-e "s/@MAJORVERSION@/$MAJORVERSION/g" \
-	-e "s/@MINORVERSION@/$MINORVERSION/g" \
-	<${SOURCE}.in \
-	>$SOURCE
-#---------------------------------------------------------------------------

src/interfaces/jdbc/utils/changelog.pl

-#!/bin/perl
-
-while(<>) {
-    chomp();
-    s/\t+/ /g;
-    if(substr($_,0,3) eq ' - ') {
-	print "<ul>" if !$inlist;
-	$inlist=1;
-	print "<li>".substr($_,3)."\n";
-    } else {
-	if($_ eq "" || $_ eq " ") {
-	    print "</ul>" if $inlist;
-	    $inlist=0;
-	    print "<br>\n";
-	} elsif(substr($_,0,1) eq " ") {
-	    print $_;
-	} else {
-	    print "</ul>" if $inlist;
-	    $inlist=0;
-	    print "<h4>".$_."</h4>\n";
-	}
-    }
-}