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synced 2024-12-21 08:29:39 +08:00
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
This commit is contained in:
Barry Lind
parent
e9f07b14e1
commit
06b297938d
@ -4,7 +4,7 @@
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#
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# Copyright (c) 2001, PostgreSQL Global Development Group
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#
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# $Header: /cvsroot/pgsql/src/interfaces/jdbc/Attic/Makefile,v 1.35 2002/07/23 03:59:54 barry Exp $
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# $Header: /cvsroot/pgsql/src/interfaces/jdbc/Attic/Makefile,v 1.36 2002/10/20 02:55:50 barry Exp $
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#
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#-------------------------------------------------------------------------
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@ -39,4 +39,4 @@ clean distclean maintainer-clean:
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$(ANT) -buildfile $(srcdir)/build.xml clean
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check: all
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$(ANT) -buildfile $(srcdir)/build.xml test
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$(ANT) -buildfile $(srcdir)/build.xml test $(properties)
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@ -8,7 +8,7 @@ import org.postgresql.util.*;
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/*
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* Converts to and from the character encoding used by the backend.
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*
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* $Id: Encoding.java,v 1.6 2002/09/06 21:23:05 momjian Exp $
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* $Id: Encoding.java,v 1.7 2002/10/20 02:55:50 barry Exp $
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*/
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public class Encoding
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@ -161,6 +161,9 @@ public class Encoding
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}
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else
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{
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if (encoding.equals("UTF-8")) {
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return decodeUTF8(encodedString, offset, length);
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}
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return new String(encodedString, offset, length, encoding);
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}
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}
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@ -223,4 +226,44 @@ public class Encoding
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return false;
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}
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}
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/**
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* custom byte[] -> String conversion routine, 3x-10x faster than
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* standard new String(byte[])
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*/
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private static final int pow2_6 = 64; // 26
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private static final int pow2_12 = 4096; // 212
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private static char[] cdata = new char[50];
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private synchronized String decodeUTF8(byte data[], int offset, int length) {
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char[] l_cdata = cdata;
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if (l_cdata.length < (length-offset)) {
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l_cdata = new char[length-offset];
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}
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int i = offset;
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int j = 0;
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int z, y, x, val;
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while (i < length) {
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z = data[i] & 0xFF;
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if (z < 0x80) {
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l_cdata[j++] = (char)data[i];
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i++;
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} else if (z >= 0xE0) { // length == 3
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y = data[i+1] & 0xFF;
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x = data[i+2] & 0xFF;
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val = (z-0xE0)*pow2_12 + (y-0x80)*pow2_6 + (x-0x80);
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l_cdata[j++] = (char) val;
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i+= 3;
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} else { // length == 2 (maybe add checking for length > 3, throw exception if it is
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y = data[i+1] & 0xFF;
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val = (z - 0xC0)* (pow2_6)+(y-0x80);
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l_cdata[j++] = (char) val;
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i+=2;
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}
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}
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String s = new String(l_cdata, 0, j);
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return s;
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}
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}
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@ -14,7 +14,7 @@ import org.postgresql.largeobject.LargeObjectManager;
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import org.postgresql.util.*;
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/* $Header: /cvsroot/pgsql/src/interfaces/jdbc/org/postgresql/jdbc1/Attic/AbstractJdbc1Connection.java,v 1.11 2002/10/17 05:33:52 barry Exp $
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/* $Header: /cvsroot/pgsql/src/interfaces/jdbc/org/postgresql/jdbc1/Attic/AbstractJdbc1Connection.java,v 1.12 2002/10/20 02:55:50 barry Exp $
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* This class defines methods of the jdbc1 specification. This class is
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* extended by org.postgresql.jdbc2.AbstractJdbc2Connection which adds the jdbc2
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* methods. The real Connection class (for jdbc1) is org.postgresql.jdbc1.Jdbc1Connection
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@ -367,10 +367,16 @@ public abstract class AbstractJdbc1Connection implements org.postgresql.PGConnec
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//jdbc by default assumes autocommit is on until setAutoCommit(false)
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//is called. Therefore we need to ensure a new connection is
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//initialized to autocommit on.
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//We also set the client encoding so that the driver only needs
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//to deal with utf8. We can only do this in 7.3 because multibyte
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//support is now always included
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if (haveMinimumServerVersion("7.3"))
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{
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java.sql.ResultSet acRset =
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ExecSQL("show autocommit");
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ExecSQL("set client_encoding = 'UNICODE'; show autocommit");
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//set encoding to be unicode
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encoding = Encoding.getEncoding("UNICODE", null);
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if (!acRset.next())
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{
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@ -1,74 +0,0 @@
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package utils;
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/*
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* This little app checks to see what version of JVM is being used.
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* It does this by checking first the java.vm.version property, and
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* if that fails, it looks for certain classes that should be present.
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*/
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public class CheckVersion
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{
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/*
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* Check for the existence of a class by attempting to load it
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*/
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public static boolean checkClass(String c)
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{
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try
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{
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Class.forName(c);
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}
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catch (Exception e)
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{
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return false;
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}
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return true;
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}
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/*
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* This first checks java.vm.version for 1.1, 1.2 or 1.3.
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*
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* It writes jdbc1 to stdout for the 1.1.x VM.
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*
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* For 1.2 or 1.3, it checks for the existence of the javax.sql.DataSource
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* interface, and if found writes enterprise to stdout. If the interface
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* is not found, it writes jdbc2 to stdout.
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*
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* PS: It also looks for the existence of java.lang.Byte which appeared in
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* JDK1.1.0 incase java.vm.version is not heeded by some JVM's.
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*
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* If it can't work it out, it writes huho to stdout.
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*
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* The make file uses the written results to determine which rule to run.
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*
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* Bugs: This needs thorough testing.
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*/
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public static void main(String args[])
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{
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String vmversion = System.getProperty("java.vm.version");
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System.out.println("postgresql.jdbc=" + System.getProperty("postgresql.jdbc"));
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// We are running a 1.1 JVM
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if (vmversion.startsWith("1.1"))
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{
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System.out.println("jdbc1");
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//System.exit(0);
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}
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else
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// We are running a 1.2 or 1.3 JVM
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if (vmversion.startsWith("1.2") ||
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vmversion.startsWith("1.3") ||
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checkClass("java.lang.Byte")
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)
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{
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// Check to see if we have the standard extensions. If so, then
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// we want the enterprise edition, otherwise the jdbc2 driver.
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if (checkClass("javax.sql.DataSource"))
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System.out.println("enterprise");
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else
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System.out.println("jdbc2");
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//System.exit(0);
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}
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System.setProperty("postgresql.jdbc", "yoyo");
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}
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}
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@ -1,47 +0,0 @@
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#!/bin/sh
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#
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# $Id: buildDriver,v 1.2 2000/12/20 16:22:49 peter Exp $
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#
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# This script generates the org/postgresql/Driver.java file from the template
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# org/postgresql/Driver.java.in
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#
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# We do this because we need to include the version number from Makefile.global
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# and some other goodies.
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#
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# This used to be in Makefile, but as it's now done three times, it's better
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# to have it as a separate script.
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#
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# If you have any problems, please let us know ;-)
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#
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# Syntax: buildDriver version class
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#
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# Where:
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# version The version string from Makefile.global
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# class The class implementing java.sql.Connection
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# edition The driver edition being built
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# source The file to build. We assume that ${source}.in exists
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#
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VERSION=$1
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CLASS=$2
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EDITION=$3
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SOURCE=$4
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#---------------------------------------------------------------------------
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# Extract the version. This will work until version x.9 (and assuming we don't
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# have 7.10 etc). We only handle 1 digit for MINORVERSION to handle things like
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# 7.1devel etc
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#
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MAJORVERSION=`echo $VERSION | cut -f1 -d'.'`
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MINORVERSION=`echo $VERSION | cut -f2 -d'.' | cut -c1`
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#---------------------------------------------------------------------------
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# Now finally build the driver
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sed \
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-e "s/@JDBCCONNECTCLASS@/$CLASS/g" \
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-e "s/@VERSION@/$VERSION $EDITION/g" \
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-e "s/@MAJORVERSION@/$MAJORVERSION/g" \
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-e "s/@MINORVERSION@/$MINORVERSION/g" \
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<${SOURCE}.in \
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>$SOURCE
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#---------------------------------------------------------------------------
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@ -1,23 +0,0 @@
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#!/bin/perl
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while(<>) {
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chomp();
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s/\t+/ /g;
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if(substr($_,0,3) eq ' - ') {
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print "<ul>" if !$inlist;
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$inlist=1;
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print "<li>".substr($_,3)."\n";
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} else {
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if($_ eq "" || $_ eq " ") {
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print "</ul>" if $inlist;
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$inlist=0;
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print "<br>\n";
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} elsif(substr($_,0,1) eq " ") {
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print $_;
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} else {
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print "</ul>" if $inlist;
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$inlist=0;
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print "<h4>".$_."</h4>\n";
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}
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}
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}
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