Jeremy Quinn <[EMAIL PROTECTED]> asks:
>
> I have a class called Constants, that is like this:
>
> public final class Constants {
> public static final String FAILURE = "Failed";
> public static final String CANCEL_ACTION = "Cancelled";
> // etc.
> }
>
> I wish to share this between my Java 'biz logic', my FlowScripts and
> the View Layer.
>
> I have the first two working as expected, the third I
> cannot work out
> .....
>
> Is it possible to pass the Constants class to the JXTemplate
> view layer
> in such a way that I can extract their values?
>
> I have tried several ways of sending the Constants class to the view
> layer, and using #{CANCEL_ACTION} (etc.) in my template, without
> success.
>
> Any suggestions?
>
Yes, but you may not like it... We build our static constants from an
XML file using an XSLT transform to create the Java code:
<?xml version='1.0' encoding='utf-8' ?>
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform";
version="1.0"
xmlns="http://www.w3.org/TR/REC-html40";
xmlns:java="http://xml.apache.org/xslt/java";
xmlns:xalan="http://xml.apache.org/xalan";
exclude-result-prefixes="java"
extension-element-prefixes="xalan">
<xsl:output encoding="utf-8" method="text" indent="yes"/>
<!--
This template takes in a set of object definitions and spits out a
Java file defining user interface constants
-->
<xsl:template match="package">package <xsl:value-of select="@name"/>;
/**
* Static constant values used in the UI layer
*
* ***** Do not alter this file *****
*
* This file was produced from the source UIConstants.xml
* See the comments in that file for information on how to
* update and produce this file
*
*/
public abstract class UIConstants {
<xsl:apply-templates select="//field"><xsl:sort select="concat(@value !=
'',@name)"/></xsl:apply-templates>
<xsl:apply-templates select="//[EMAIL PROTECTED] !='']"
mode="display"><xsl:sort select="@name"/></xsl:apply-templates>
}
</xsl:template>
<xsl:template match="[EMAIL PROTECTED] !='']" mode="display"> public
static final String <xsl:value-of select="concat('FRIENDLY_',@name)"/> =
"<xsl:value-of select="normalize-space(@display)"/>";
</xsl:template>
<xsl:template match="field"> public static final String <xsl:value-of
select="@name"/> = "<xsl:value-of
select="normalize-space(text())"/>";<xsl:call-template name="comment"/>
</xsl:template>
<xsl:template match="[EMAIL PROTECTED] !='']"> public static final int
<xsl:value-of select="@name"/> = <xsl:value-of
select="@value"/>;<xsl:call-template name="comment"/> public static
final String <xsl:value-of select="@name"/>_STR = "<xsl:value-of
select="normalize-space(text())"/>";<xsl:call-template name="comment"/>
</xsl:template>
<xsl:template name="comment">
<xsl:choose><xsl:when test="@comment != ''"><xsl:value-of
select="concat('						//',@comment)"/><xsl:text>
</xsl:text></xsl:when>
<xsl:otherwise><xsl:text>
</xsl:text></xsl:otherwise>
</xsl:choose>
</xsl:template>
</xsl:stylesheet>
