PLEASE DO NOT REPLY TO THIS MESSAGE. TO FURTHER COMMENT ON THE STATUS OF THIS BUG PLEASE FOLLOW THE LINK BELOW AND USE THE ON-LINE APPLICATION. REPLYING TO THIS MESSAGE DOES NOT UPDATE THE DATABASE, AND SO YOUR COMMENT WILL BE LOST SOMEWHERE. http://nagoya.apache.org/bugzilla/show_bug.cgi?id=3514 *** shadow/3514 Mon Sep 10 02:16:37 2001 --- shadow/3514.tmp.6080 Mon Sep 10 02:16:37 2001 *************** *** 0 **** --- 1,142 ---- + +============================================================================+ + | computational (recursive) template is very slow compared to xalan 1.2.2 | + +----------------------------------------------------------------------------+ + | Bug #: 3514 Product: XalanJ2 | + | Status: NEW Version: 2.2.x | + | Resolution: Platform: PC | + | Severity: Critical OS/Version: Windows NT/2K | + | Priority: Other Component: Xalan | + +----------------------------------------------------------------------------+ + | Assigned To: [EMAIL PROTECTED] | + | Reported By: [EMAIL PROTECTED] | + | CC list: Cc: | + +----------------------------------------------------------------------------+ + | URL: | + +============================================================================+ + | DESCRIPTION | + computational (recursive) template is very slow in xalan-j 2.2.x (and 2.1.0) + compared to xalan 1.2.2. I use the following script where both jars (xalan and + xerces) come from the refered xalan package. + + ---------------------------------------- + set JAVA_HOME=c:\java\jdk1.3.0 + set XALAN=%JAVA_HOME%\bin\java.exe org.apache.xalan.xslt.Process + + set CLASSPATH=xalan_1.2.2_xalan.jar;xalan_1.2.2_xerces.jar + %XALAN% -IN xalan-1.xml -XSL xalan-1.xslt -OUT result-1.xml + + set CLASSPATH=xalan_2.2.D10_xalan.jar;xalan_2.2.D10_xerces.jar + %XALAN% -DIAG -IN xalan-1.xml -XSL xalan-1.xslt -OUT result-1.xml + ---------------------------------------- + + this gives me: + + ========= Parsing file:c:/Java/test/xalan-1.xslt ========== + Parse of file:c:/Java/test/xalan-1.xslt took 741 milliseconds + ========= Parsing file:c:/Java/test/xalan-1.xml ========== + Parse of file:c:/Java/test/xalan-1.xml took 120 milliseconds + ============================= + Transforming... + transform took 181 milliseconds + XSLProcessor: done + + ======== + Transform of xalan-1.xml via xalan-1.xslt took 2334 ms + + The number for xalan-j 2.2.x increases faster than linear with the number of + elements in the xml source. I hope that I don't do anything bad in my xslt but + moving to a new version should not decrease performance so badly ... + + xml data example: + ---------------------------------------- + <?xml version="1.0"?> + <foo> + <x id="A1"> <z> 3</z></x> + <x id="A2"> <z>11</z></x> + <x id="A3"> <z>13</z></x> + <x id="A4"> <z> 7</z></x> + <x id="A5"> <z> 1</z></x> + <x id="A6"> <z> 5</z></x> + <x id="A7"> <z> 0</z></x> + <x id="A8"> <z>16</z></x> + <x id="A9"> <z>13</z></x> + <x id="A10"><z>11</z></x> + <x id="A11"><z> 3</z></x> + <x id="A12"><z> 6</z></x> + <x id="A13"><z> 2</z></x> + <x id="A14"><z> 7</z></x> + <x id="A15"><z> 1</z></x> + <x id="A16"><z>13</z></x> + <x id="A17"><z>10</z></x> + <x id="A18"><z> 2</z></x> + <x id="A19"><z>14</z></x> + <x id="A20"><z>11</z></x> + <x id="A21"><z> 3</z></x> + <x id="A22"><z>11</z></x> + <x id="A23"><z>13</z></x> + <x id="A24"><z> 7</z></x> + <x id="A25"><z> 1</z></x> + <x id="A26"><z> 5</z></x> + <x id="A27"><z> 0</z></x> + <x id="A28"><z>16</z></x> + <x id="A29"><z> 0</z></x> + <x id="A30"><z>11</z></x> + <x id="A31"><z> 9</z></x> + <x id="A32"><z> 3</z></x> + <x id="A33"><z> 4</z></x> + <x id="A34"><z> 7</z></x> + <x id="A35"><z> 1</z></x> + <x id="A36"><z> 8</z></x> + <x id="A37"><z>10</z></x> + <x id="A38"><z> 2</z></x> + <x id="A39"><z>17</z></x> + <x id="A40"><z>11</z></x> + </foo> + ---------------------------------------- + + xslt example: + ---------------------------------------- + <?xml version="1.0"?> + <xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform";> + + <xsl:template match="/foo"> + <foo> + <xsl:variable name="max"> + <xsl:call-template name="max"> + <xsl:with-param name="list" select="x"/> + </xsl:call-template> + </xsl:variable> + + <xsl:value-of select="$max"/> + </foo> + </xsl:template> + + <xsl:template name="max"> + <xsl:param name="list"/> + + <xsl:choose> + <xsl:when test="$list"> + <xsl:variable name="remaining-max"> + <xsl:call-template name="max"> + <xsl:with-param name="list" select="$list[position()!=1]"/> + </xsl:call-template> + </xsl:variable> + + <xsl:variable name="max" select="$list[1]/z"/> + <xsl:variable name="max" select="substring($max, string-length + ($max)-3)"/> + + <xsl:choose> + <xsl:when test="$max > $remaining-max"><xsl:value-of + select="$max"/></xsl:when> + <xsl:otherwise><xsl:value-of select="$remaining- + max"/></xsl:otherwise> + </xsl:choose> + + </xsl:when> + <xsl:otherwise>0</xsl:otherwise> + </xsl:choose> + </xsl:template> + + </xsl:stylesheet> + ----------------------------------------
