Package org.apache.strutsel.taglib.bean

The "struts-bean-el" tag library contains JSP custom tags useful in defining new beans (in any desired scope) from a variety of possible sources, as well as a tag to render a particular bean (or bean property) to the output response.

See:
Description

Class Summary

ELIncludeTag	Generate a URL-encoded include to the specified URI.
ELIncludeTagBeanInfo	This is the BeanInfo descriptor for the org.apache.strutsel.taglib.bean.ELIncludeTag class.
ELMessageTag	Custom tag that retrieves an internationalized messages string (with optional parametric replacement) from the ActionResources object stored as a context attribute by our associated ActionServlet implementation.
ELMessageTagBeanInfo	This is the BeanInfo descriptor for the org.apache.strutsel.taglib.bean.ELMessageTag class.
ELPageTag	Define a scripting variable that exposes the requested page context item as a scripting variable and a page scope bean.
ELPageTagBeanInfo	This is the BeanInfo descriptor for the org.apache.strutsel.taglib.bean.ELPageTag class.
ELResourceTag	Define a scripting variable based on the contents of the specified web application resource.
ELResourceTagBeanInfo	This is the BeanInfo descriptor for the org.apache.strutsel.taglib.bean.ELResourceTag class.
ELSizeTag	Define a scripting variable that will contain the number of elements found in a specified array, Collection, or Map.
ELSizeTagBeanInfo	This is the BeanInfo descriptor for the org.apache.strutsel.taglib.bean.ELSizeTag class.
ELStrutsTag	Define a scripting variable that exposes the requested Struts internal configuraton object.
ELStrutsTagBeanInfo	This is the BeanInfo descriptor for the org.apache.strutsel.taglib.bean.ELStrutsTag class.

Package org.apache.strutsel.taglib.bean Description

The "struts-bean-el" tag library contains JSP custom tags useful in defining new beans (in any desired scope) from a variety of possible sources, as well as a tag to render a particular bean (or bean property) to the output response.

[Introduction] [Bean-EL Functionality] [Bean-EL Examples]

Introduction

The functionality of this tag library is entirely provided by the base "struts-bean" tag library in the Struts distribution. This derived tag library, "struts-bean-el", only provides a different way to evaluate attribute values, which is using the JavaServer Pages Standard Tag Library expression language engine, or the "JSTL EL" for short.

In general, the tags provided in the "struts-bean-el" library are a direct mapping from the "struts-bean" tag library. However, there are several tags in the base Struts tag library which were not "ported" to the "struts-bean-el" tag library, as it was determined that all of their functionality was provided by the JSTL. Information about these "non-ported" tags is provided in the information for the "org.apache.strutsel" package.

Bean-EL Functionality

The functionality of the "bean-el" tags can be almost entirely understood from the documentation of the "struts-bean" base tag library.

Bean-EL Examples

The following are discrete examples of uses of the "bean-el" tags, in no paticular order, but emphasizing the use of JSTL EL values as attribute values.

Example:

    <bean-el:message key="${messKey}" arg0="${arg}"/>

Example:

    <bean-el:resource id="var" name="${filename}" />

Example:

    <%-- Size of pagescope hash table --%>
    <bean-el:size id="pageScopeSize" collection="${pageScope}" />

Example:

    <bean-el:struts id="mapping" mapping="${actionName}" />