Frontman 2.0 with ConstantsMapTag

[John Schretz]

Hi,

I wanted to incorporate the following in my application:

http://www.javaranch.com/journal/200601/Journal200601.jsp#a3

I am also using FM2.0 and it kinda looks like there is support for this already in FM2.0

I guess this is pretty much directed toward bear, but what would I have to do to set this up using frontman? and where can i find a suitable tld file to use because it looks like the tld file in the jar attached to the article doesnt use the same class packages.

thanks
John

[Bear Bibeault]

I'll have to check later on... in hysteria mode right now!

[John Schretz]

Sounds good

[John Schretz]

Hey just checking in on this.

Looking through the code the only class i see in common in FM2.0 is ConstantsMapTag
Looks like it was refactored from the original.

[John Schretz]

So i believe i found a work around. Seems you only need the ConstantsMapTag.java that is in FM2.0 for this to work and I altered the tld file.

I removed all other tags and functions but the below tag:

 <tag>
        <description>
          <![CDATA[
            Establishes a scoped variable that implements the <code>java.util.Map</code> interface whose keys and values are the names and values of a named class' class constants.
          ]]>
        </description>
        <name>constantsMap</name>
        <tag-class>org.bibeault.frontman.tags.ConstantsMapTag</tag-class>
        <tei-class>org.bibeault.frontman.tags.ConstantsMapTag$ExtraInfo</tei-class>
        <body-content>empty</body-content>
        <attribute>
            <description>
              <![CDATA[
                The fully qualified name of the class whose class constants are to be established in the generated Map instance.
              ]]>
            </description>
            <name>className</name>
            <required>true</required>
            <rtexprvalue>true</rtexprvalue>
        </attribute>
        <attribute>
            <description>
              <![CDATA[
                The name of the scoped variable to create.
              ]]>
            </description>
            <name>var</name>
            <required>true</required>
            <rtexprvalue>false</rtexprvalue>
        </attribute>
        <attribute>
            <description>
              <![CDATA[
                The scope in which the scoped variable is to be created. If specified, must be one of: page, request, session or application. If omitted, the variable is created in page context.
              ]]>
            </description>
            <name>scope</name>
            <required>false</required>
            <rtexprvalue>false</rtexprvalue>
        </attribute>
    </tag>

Set it up as per below:

//Declare tag create folder and put file in it
<%@ taglib uri="tld/ccc.tld" prefix="ccc" %>

<ccc:constantsMap className="discounts.DiscountSettings" var="DiscountSettings"/> //Declare class
${DiscountSettings.DISCOUNT_PAGE_SUCESS} // Test to print out constant which was sucess

Seems to work doing a quick test

Updated tld file if anyone else wants to use this with FM2.0

<!--
 * Copyright (c) 2005, Bear Bibeault
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 *  - Redistributions of source code must retain the above copyright notice,
 *    this list of conditions and the following disclaimer.
 *  - Redistributions in binary form must reproduce the above copyright notice,
 *    this list of conditions and the following disclaimer in the documentation
 *    and/or other materials provided with the distribution.
 *  - The name of Bear Bibeault may not be used to endorse or promote products
 *    derived from this software without specific prior written permission.
 *
 * This software is provided by the copyright holders and contributors "as is"
 * and any express or implied warranties, including, but not limited to, the
 * implied warranties of merchantability and fitness for a particular purpose
 * are disclaimed. In no event shall the copyright owner or contributors be
 * liable for any direct, indirect, incidental, special, exemplary, or
 * consequential damages (including, but not limited to, procurement of
 * substitute goods or services; loss of use, data, or profits; or business
 * interruption) however caused and on any theory of liability, whether in
 * contract, strict liability, or tort (including negligence or otherwise)
 * arising in any way out of the use of this software, even if advised of the
 * possibility of such damage.
-->
<taglib xmlns="http://java.sun.com/xml/ns/j2ee"
        xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
        xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee/web-jsptaglibrary_2_0.xsd"
        version="2.0">

    <description>
      <![CDATA[
        Tag library to support the
        <a href="http://www.javaranch.com/newsletter.jsp" target="_blank">JavaRanch Journal</a> article <b>Scriptless JSP<br/>
        Pages: The Constant Constants Consternation</b> by <a href="mailto:[e-mail]">Bear Bibeault</a>.
      ]]>
    </description>

    <display-name>Constant Constants Consternation Tag Set</display-name>
    <tlib-version>1.0</tlib-version>
    <short-name>ccc</short-name>
    <uri>http://bibeault.org/tld/ccc</uri>

    <tag>
        <description>
          <![CDATA[
            Establishes a scoped variable that implements the <code>java.util.Map</code> interface whose keys and values are the names and values of a named class' class constants.
          ]]>
        </description>
        <name>constantsMap</name>
        <tag-class>org.bibeault.frontman.tags.ConstantsMapTag</tag-class>
        <tei-class>org.bibeault.frontman.tags.ConstantsMapTag$ExtraInfo</tei-class>
        <body-content>empty</body-content>
        <attribute>
            <description>
              <![CDATA[
                The fully qualified name of the class whose class constants are to be established in the generated Map instance.
              ]]>
            </description>
            <name>className</name>
            <required>true</required>
            <rtexprvalue>true</rtexprvalue>
        </attribute>
        <attribute>
            <description>
              <![CDATA[
                The name of the scoped variable to create.
              ]]>
            </description>
            <name>var</name>
            <required>true</required>
            <rtexprvalue>false</rtexprvalue>
        </attribute>
        <attribute>
            <description>
              <![CDATA[
                The scope in which the scoped variable is to be created. If specified, must be one of: page, request, session or application. If omitted, the variable is created in page context.
              ]]>
            </description>
            <name>scope</name>
            <required>false</required>
            <rtexprvalue>false</rtexprvalue>
        </attribute>
    </tag>

</taglib>

John