ovidiu 02/02/15 17:41:33
Added: src/scratchpad/schecoon/src/org/apache/cocoon/markup/xsp
jpath.xsl
Log:
Simple stylesheet for extracting data out of Java objects passed from
the flow control layer. This should be only logicsheet needed when
developing Web applications using Schecoon: the flow control layer
invokes the business logic layer, and passes objects from it to the
content generation layer. The content generation (XSP) uses this
logicsheet to extract data from the objects passed to it.
Revision Changes Path
1.1
xml-cocoon2/src/scratchpad/schecoon/src/org/apache/cocoon/markup/xsp/jpath.xsl
Index: jpath.xsl
===================================================================
<?xml version="1.0" encoding="utf-8"?>
<xsl:stylesheet
version="1.0"
xmlns:xsp="http://apache.org/xsp";
xmlns:jpath="http://apache.org/xsp/jpath/1.0";
xmlns:xsl="http://www.w3.org/1999/XSL/Transform";>
<xsl:template match="xsp:page">
<xsp:page>
<xsl:apply-templates select="@*"/>
<xsp:structure>
<xsp:include>java.util.List</xsp:include>
<xsp:include>java.util.Iterator</xsp:include>
<xsp:include>org.apache.cocoon.environment.Environment</xsp:include>
<xsp:include>org.apache.commons.jpath.JPath</xsp:include>
<xsp:include>org.apache.commons.jpath.JPathContext</xsp:include>
<xsp:include>sisc.data.Value</xsp:include>
<xsp:include>sisc.modules.J2S</xsp:include>
</xsp:structure>
<xsp:logic>
</xsp:logic>
<xsp:init-page>
Value sbean = (Value)((Environment)resolver).getAttribute("bean-dict");
Object bean = sbean.javaValue();
System.out.println ("bean class = " + bean.getClass() + ", bean = " + bean);
JPathContext jpathContext = JPathContext.newContext(bean);
System.out.println ("bean value = " + jpathContext.getValue("."));
</xsp:init-page>
<xsl:apply-templates/>
</xsp:page>
</xsl:template>
<xsl:template match="jpath:if">
<xsl:choose>
<xsl:when test="@test">
<xsp:logic>
if (jpathContext.getValue("<xsl:value-of select="@test"/>") != null) {
<xsl:apply-templates/>
}
</xsp:logic>
</xsl:when>
<xsl:otherwise>
<xsl:message terminate="yes">
<xsl:text>Required 'test' attribute in <jpath:if> is
missing!</xsl:text>
</xsl:message>
</xsl:otherwise>
</xsl:choose>
</xsl:template>
<xsl:template match="jpath:for-each">
<xsl:variable name="old-context">
oldJPathContext<xsl:value-of select="count(ancestor-or-self::*)"/>
</xsl:variable>
<xsl:choose>
<xsl:when test="@select">
<xsp:logic>
{
List selection = jpathContext.eval("<xsl:value-of select="@select"/>");
if (selection != null) {
Iterator iter = selection.iterator();
JPathContext <xsl:value-of select="$old-context"/> = jpathContext;
while (iter.hasNext()) {
Object current = iter.next();
jpathContext = JPathContext.newContext(current);
</xsp:logic>
<xsl:apply-templates/>
<xsp:logic>
}
jpathContext = <xsl:value-of select="$old-context"/>;
}
}
</xsp:logic>
</xsl:when>
<xsl:otherwise>
<xsl:message terminate="yes">
<xsl:text>Required 'select' attribute in <jpath:for-each> is
missing!</xsl:text>
</xsl:message>
</xsl:otherwise>
</xsl:choose>
</xsl:template>
<xsl:template match="jpath:value-of">
<xsl:choose>
<xsl:when test="@select">
jpathContext.getValue("<xsl:value-of select="@select"/>")
</xsl:when>
<xsl:otherwise>
<xsl:message terminate="yes">
<xsl:text>Required 'select' attribute in <jpath:value-of> is
missing!</xsl:text>
</xsl:message>
</xsl:otherwise>
</xsl:choose>
</xsl:template>
<xsl:template match="@*|*|text()|processing-instruction()">
<!-- Catch all template. Just pass along unmodified everything we
don't handle. -->
<xsl:copy>
<xsl:apply-templates select="@*|*|text()|processing-instruction()"/>
</xsl:copy>
</xsl:template>
</xsl:stylesheet>
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