view flys-artifacts/contrib/visualize-transitions.xsl @ 5779:ebec12def170

Datacage: Add a pool of builders to make it multi threadable. XML DOM is not thread safe. Therefore the old implementation only allowed one thread to use the builder at a time. As the complexity of the configuration has increased over time this has become a bottleneck of the whole application because it took quiet some time to build a result. Furthermore the builder code path is visited very frequent. So many concurrent requests were piled up resulting in long waits for the users. To mitigate this problem a round robin pool of builders is used now. Each of the pooled builders has an independent copy of the XML template and can be run in parallel. The number of builders is determined by the system property 'flys.datacage.pool.size'. It defaults to 4.
author Sascha L. Teichmann <teichmann@intevation.de>
date Sun, 21 Apr 2013 12:48:09 +0200
parents a079f4e26001
children
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<?xml version="1.0" encoding="UTF-8"?>

<!--
 Copyright (c) 2010 by Intevation GmbH

 This program is free software under the LGPL (>=v2.1)
 Read the file LGPL.txt coming with the software for details
 or visit http://www.gnu.org/licenses/ if it does not exist.

 Author: Sascha L. Teichmann (sascha.teichmann@intevation.de)
-->

<xsl:stylesheet 
    xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
    xmlns:xlink="http://www.w3.org/1999/xlink"
    version="1.0">

    <xsl:output method="text" encoding="UTF-8"/>

    <xsl:param name="base-dir">.</xsl:param>

    <xsl:template match="/">
        <xsl:text>digraph transition_model {&#xa;</xsl:text>
        <xsl:apply-templates />
        <xsl:text>}&#xa;</xsl:text>
    </xsl:template>

    <xsl:template match="artifact">
        <xsl:choose>
            <xsl:when test="@xlink:href != ''">
                <!-- handle external artifacts -->
                <xsl:variable name="path">
                    <xsl:call-template name="string-replace-all">
                    <xsl:with-param name="text" select="@xlink:href" />
                    <xsl:with-param name="replace">${artifacts.config.dir}</xsl:with-param>
                    <xsl:with-param name="by" select="$base-dir" />
                    </xsl:call-template>
                </xsl:variable>
                <xsl:for-each select="document($path)">
                    <xsl:apply-templates select="/artifact"/>
                </xsl:for-each>
            </xsl:when>
            <xsl:otherwise>
                <!-- handle internal artifacts -->
                <xsl:text>subgraph </xsl:text><xsl:value-of select="@name"/>
                <xsl:text> {&#xa;</xsl:text>
                <xsl:text>    label = "Artefakt: </xsl:text>
                <xsl:value-of select="@name"/>
                <xsl:text>";&#xa;</xsl:text>
                <xsl:apply-templates mode="inside-artifact" select="./states/state"/>
                <xsl:apply-templates mode="inside-artifact" select="./states/transition"/>
                <xsl:text>}&#xa;</xsl:text>
            </xsl:otherwise>
        </xsl:choose>
    </xsl:template>

    <xsl:template match="state" mode="inside-artifact">
        <xsl:text>    "</xsl:text>
        <xsl:value-of select="@id"/>
        <xsl:text disable-output-escaping="yes"
        >" [ shape = "record" label=&lt;&lt;table border="0" cellborder="0" cellpadding="3"&gt;
        &lt;tr&gt;&lt;td align="center" colspan="2" bgcolor="black"&gt;&lt;font color="white"&gt;</xsl:text>
        <xsl:value-of select="@id"/>
        <xsl:text disable-output-escaping="yes"
        >&lt;/font&gt;&lt;/td&gt;&lt;/tr&gt;</xsl:text>
            <xsl:apply-templates mode="inside-artifact" />
        <xsl:text disable-output-escaping="yes"
        >&lt;/table&gt;&gt;]</xsl:text>
        <xsl:text>;&#xa;</xsl:text>
    </xsl:template>

    <xsl:template match="data" mode="inside-artifact">
        <xsl:text disable-output-escaping="yes"
        >&lt;tr&gt;&lt;td align="right"&gt;</xsl:text>
        <xsl:value-of select="@name"/>
        <xsl:text disable-output-escaping="yes"
        >&lt;/td&gt;&lt;td align="left"&gt;</xsl:text>
        <xsl:value-of select="@type"/>
        <xsl:text disable-output-escaping="yes"
        >&lt;/td&gt;&lt;/tr&gt;</xsl:text>
    </xsl:template>

    <xsl:template match="transition" mode="inside-artifact">
        <xsl:text>    "</xsl:text>
        <xsl:value-of select="from/@state"/>
        <xsl:text disable-output-escaping="yes">" -&gt; "</xsl:text>
        <xsl:value-of select="to/@state"/>
        <xsl:text>"</xsl:text>
        <xsl:apply-templates mode="inside-artifact"/>
        <xsl:text>;&#xa;</xsl:text>
    </xsl:template>

    <xsl:template match="condition" mode="inside-artifact">
        <xsl:text> [ label="</xsl:text>
        <xsl:value-of select="@data"/>
        <xsl:text> </xsl:text>
        <xsl:call-template name="readable-operator">
            <xsl:with-param name="operator" select="@operator"/>
        </xsl:call-template>
        <xsl:text> </xsl:text>
        <xsl:value-of select="@value"/>
        <xsl:text>" ]</xsl:text>
    </xsl:template>

    <xsl:template match="text()" mode="inside-artifact"/>
    <xsl:template match="text()"/>

    <xsl:template name="readable-operator">
        <xsl:param name="operator" />
        <xsl:choose>
            <xsl:when test='$operator = "equal"'>=</xsl:when>
            <xsl:when test='$operator = "notequal"'>!=</xsl:when>
            <xsl:otherwise><xsl:value-of select="$operator"/></xsl:otherwise>
        </xsl:choose>
    </xsl:template>

     <xsl:template name="string-replace-all">
        <xsl:param name="text" />
        <xsl:param name="replace" />
        <xsl:param name="by" />
        <xsl:choose>
          <xsl:when test="contains($text, $replace)">
            <xsl:value-of select="substring-before($text,$replace)" />
            <xsl:value-of select="$by" />
            <xsl:call-template name="string-replace-all">
              <xsl:with-param name="text"
                  select="substring-after($text,$replace)" />
              <xsl:with-param name="replace" select="$replace" />
              <xsl:with-param name="by" select="$by" />
            </xsl:call-template>
          </xsl:when>
          <xsl:otherwise>
            <xsl:value-of select="$text" />
          </xsl:otherwise>
        </xsl:choose>
      </xsl:template>
    
</xsl:stylesheet>

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