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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 662bcb3bdfd7
children
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<?xml version="1.0"?>
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" xmlns:html="http://www.w3.org/1999/xhtml" version="1.0" exclude-result-prefixes="html">
  <xsl:output method="html"/>
  <xsl:template name="out">
    <xsl:param name="value"/>
    <xsl:choose>
      <xsl:when test="$value = ''">-/-</xsl:when>
      <xsl:otherwise>
        <xsl:value-of select="$value"/>
      </xsl:otherwise>
    </xsl:choose>
  </xsl:template>
  <xsl:template match="PEGELSTATION">
    <tr>
      <td>
        <xsl:value-of select="@NAME"/>
      </td>
      <td>
        <xsl:value-of select="@NUMMER"/>
      </td>
      <td>
        <xsl:call-template name="out">
          <xsl:with-param name="value" select="@HOCHWERT"/>
        </xsl:call-template>
      </td>
      <td>
        <xsl:call-template name="out">
          <xsl:with-param name="value" select="@TK_BLATT"/>
        </xsl:call-template>
      </td>
      <td>
        <xsl:call-template name="out">
          <xsl:with-param name="value" select="@BETREIBER"/>
        </xsl:call-template>
      </td>
      <td>
        <xsl:call-template name="out">
          <xsl:with-param name="value" select="@GEOBREITE"/>
        </xsl:call-template>
      </td>
      <td>
        <xsl:call-template name="out">
          <xsl:with-param name="value" select="@GEOLAENGE"/>
        </xsl:call-template>
      </td>
      <td>
        <xsl:call-template name="out">
          <xsl:with-param name="value" select="@GEWAESSER"/>
        </xsl:call-template>
      </td>
      <td>
        <xsl:call-template name="out">
          <xsl:with-param name="value" select="@GUELTIGAB"/>
        </xsl:call-template>
      </td>
      <td>
        <xsl:call-template name="out">
          <xsl:with-param name="value" select="@LAGESTATUS"/>
        </xsl:call-template>
      </td>
      <td>
        <xsl:call-template name="out">
          <xsl:with-param name="value" select="@RECHTSWERT"/>
        </xsl:call-template>
      </td>
      <td>
        <xsl:call-template name="out">
          <xsl:with-param name="value" select="@ABLESUNGBIS"/>
        </xsl:call-template>
      </td>
      <td>
        <xsl:call-template name="out">
          <xsl:with-param name="value" select="@ABLESUNGSEIT"/>
        </xsl:call-template>
      </td>
      <td>
        <xsl:call-template name="out">
          <xsl:with-param name="value" select="@STATIONIERUNG"/>
        </xsl:call-template>
      </td>
      <td>
        <xsl:call-template name="out">
          <xsl:with-param name="value" select="@EINGERICHTETAM"/>
        </xsl:call-template>
      </td>
      <td>
        <xsl:call-template name="out">
          <xsl:with-param name="value" select="@EINZUGSGEBIET_AEO"/>
        </xsl:call-template>
      </td>
      <td>
        <xsl:call-template name="out">
          <xsl:with-param name="value" select="@GEBIETSKENNZIFFER"/>
        </xsl:call-template>
      </td>
      <td>
        <xsl:call-template name="out">
          <xsl:with-param name="value" select="@KILOMETRIERUNG_AB"/>
        </xsl:call-template>
      </td>
      <td>
        <xsl:call-template name="out">
          <xsl:with-param name="value" select="@LAGE_AM_GEWAESSER"/>
        </xsl:call-template>
      </td>
      <td>
        <xsl:call-template name="out">
          <xsl:with-param name="value" select="@ENTFERNUNGMUENDUNG"/>
        </xsl:call-template>
      </td>
      <td>
        <xsl:call-template name="out">
          <xsl:with-param name="value" select="@KILOMETRIERUNGSRICHTUNG"/>
        </xsl:call-template>
      </td>
    </tr>
    <xsl:if test="string-length(@BESCHREIBUNG) &gt; 0">
      <tr>
        <td/>
        <td colspan="21">
          <xsl:value-of select="@BESCHREIBUNG"/>
        </td>
      </tr>
    </xsl:if>
  </xsl:template>
  <xsl:template match="/">
    <html>
      <head>
        <title>DiPs</title>
      </head>
      <body>
        <table border="1" cellspacing="0" width="50%">
          <tr>
            <th>Name</th>
            <th>Nummer</th>
            <th>Hochwert</th>
            <th>TK-Blatt</th>
            <th>Betreiber</th>
            <th>Geo-Breite</th>
            <th>Geo-L&#xE4;nge</th>
            <th>Gew&#xE4;sser</th>
            <th>G&#xFC;ltig ab</th>
            <th>Lagestatus</th>
            <th>Rechtswert</th>
            <th>Ablesung seit</th>
            <th>Ablesung bis</th>
            <th>Stationierung</th>
            <th>Eingerichtet am</th>
            <th>Einzugsgebiet AEO</th>
            <th>Gebietskennziffer</th>
            <th>Kilometrierung ab</th>
            <th>Lage am Gew&#xE4;sser</th>
            <th>Entfernung zu M&#xFC;ndung</th>
            <th>Kilometrierungsrichtung</th>
          </tr>
          <xsl:apply-templates select="/DIPSFLYS/STATIONEN"/>
        </table>
      </body>
    </html>
  </xsl:template>
  <xsl:template match="text()"/>
</xsl:stylesheet>
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