Read dynamic attributes

hi
i m created a dynamic alv   and user entry value on alv.
   how can i read this value ?
this is normaly alv.
DATA: lr_element TYPE REF TO if_wd_context_element ,
         lr_node type ref to if_wd_context_node     ,
         lr_node2 TYPE REF TO if_wd_context_node    .
DATA :gt_tab1 TYPE wd_this->elements_MALV_      ,
      gs_tab1 TYPE LINE OF wd_this->elements_MALV,
      lt_param TYPE SALV_WD_T_TABLE_MOD_CELL       .
DATA ls_param TYPE LINE OF SALV_WD_T_TABLE_MOD_CELL .
read alv----
    lr_node = wd_context->get_child_node(
        name    = wd_this->wdctx_MALV ).
        lr_node->get_static_attributes_table(
        IMPORTING
         table = gt_tab1 "al value in this int.tabel
i do
data: lr_noded   TYPE REF TO if_wd_context_node_info ,
         lr_node2   TYPE REF TO if_wd_context_node       ,
         WX_DYNAMIC TYPE REF TO if_wd_context_node_info ,
       wx_attribute TYPE REF TO WDR_CONTEXT_ATTRIBUTE_INFO.
WX_DYNAMIC = wd_context->get_node_info( ).
    CALL METHOD WX_DYNAMIC->GET_CHILD_NODE
      EXPORTING
        NAME       = wd_this->wdctx_GT_MASTER
      RECEIVING
        CHILD_NODE = LR_NODED
attributes is in LR_NODED but i don't know read this attributes
how can i do ?
Thanks
Joshua.

Hi Joshua,
Try go through Suman's comments in [here|Read data from a dynamic Context;.
Regards,
Uday

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Cheers, John
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Node for alv-table
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CALL METHOD lr_node_info->add_new_child_node
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 name = 'LINES_NEW'
 static_element_rtti = im_struc_descr
 is_static = abap_true
 is_multiple = abap_true
 is_multiple_selection = abap_false
 RECEIVING
 child_node_info = lr_subnode_info.
lr_node = lr_subnode_info->get_parent( ).
lr_node = wd_context->get_child_node( 'LINES_NEW' ).
ex_node = lr_node.
*&- bind table for alv
lr_node_alv->bind_table( new_items = <fs_tb_tree_new>
 set_initial_elements = abap_true ).

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Hi. I'm just learning Java, JSP & JSTL, and I've hit a bit of a curly one.
What's the best way to pass dynamic-attributes from a JSTL tag to another JSTL tag? Is there a way to pass them directly as a Map?
I wrote a generic-html-table-maker custom JSTL tag called "tabulator.tag" (based on one of the examples in JavaServer Pages by Hans Bergsten).
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<%-- format contents as a HTML table --%>
<%@ tag body-content="empty" dynamic-attributes="dynattrs"
 import="java.util.*" %>
<%@ attribute name="content" required="true" type="java.util.Map" %>
<%@ attribute name="caption" %>
<%@ attribute name="headers" type="java.lang.Boolean" %>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<table
<c:forEach items="${dynattrs}" var="a">
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</c:forEach>
>
<c:if test="${!empty caption}">
 <caption>${caption}</caption>
</c:if>
<c:if test="${headers}">
 <tr>
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<c:forEach items="${content}" var="row">
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</c:forEach>
</table>This works fine when called from directly from jsp as below:
"tabulator_test.jsp"
<%-- format request headers as a HTML table --%>
<%@ page contentType="text/html" %>
<%@ taglib prefix="my" tagdir="/WEB-INF/tags/mytags" %>
<my:tabulator
headers="true" caption="Tabulated Request Headers" content="${header}"
border="1" cellspacing="0" cellpadding="2"
/>BUT... Now I'm trying to write a "requestHeaders.tab" just to "centralise" the table attributes... but I can't figure out how to pass the dynamic-attributes (containing the html table attributes) from "requestHeaders.tab" through to tabulator.tab
"headers2.tab" (aka "requestHeaders.tab")
<%-- format request headers as a HTML table --%>
<%@ tag body-content="empty" dynamic-attributes="dynattrs" %>
<%@ attribute name="caption" required="true" %>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<%@ taglib prefix="fn" uri="http://java.sun.com/jsp/jstl/functions" %>
<%@ taglib prefix="my" tagdir="/WEB-INF/tags/mytags" %>
<%-- build a string of the dynamic-attributes --%>
<c:set var="s">
<c:forEach items="${dynattrs}" var="a">
 ${a.key}="${xmlEncode(a.value)}"
</c:forEach>
</c:set>
s: ${s}
<%-- and pass them to tabulator --%>
<my:tabulator content="${header}" caption="${caption}" ${s} />... throws the below Tomcat Error when called by ...
"headers2.jsp"
<%@ page contentType="text/html" %>
<%@ taglib prefix="my" tagdir="/WEB-INF/tags/mytags" %>
<html>
<body>
 <my:headers2 caption="Request Headers"
 border="1" cellspacing="0" cellpadding="5"
 />
</body>
</html>
Apache Tomcat/5.5.17 - Error report
exception
org.apache.jasper.JasperException: /WEB-INF/tags/mytags/headers2.tag(14,55) Unterminated <my:tabulator tag
 org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:510)
 org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:375)
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 javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
root cause
org.apache.jasper.JasperException: /WEB-INF/tags/mytags/headers2.tag(14,55) Unterminated <my:tabulator tag
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 ....This is just an intellectual exersice, but it's sucked me in... any help be greatly appreciated.
Thanx. KRC>

This always requires some work around. I have done two things in the past:
1) Create a variable on the page or request scope that contains the dynamic attributes you want to use:

<my:requestHeader content="${header}" border="0" cellspacing="1" cellpadding="2" />

<%@ tag body-content="empty" dynamic-attributes="dynamicAttributes" %>
<%@ attribute name="content" required="true" type="java.util.Map" %>
<c:set var="HtmlTableDynamicAttributes" value="dynamicAttributes" scope="page"/>
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<%@ tag body-content="empty" dynamic-attributes="dybamicAttributes" %>
<%@ attribute name="content" required="true" type="java.util.Map" %>

<c:if test="dynamicAttributes == null">
<c:set var="dynamicAttributes" value="HtmlTableDynamicAttributes"/>
</c:if>
//then do table work using "dynamicAttributes"Another way I had done it was to create a tag that needs to be nested in the <my:htmlTable> tag that assigns attributes as needed. So the my:htmlTable tag might need to be called like this:
<my:htmlTable content="${content}">
<my:htmlTableAttribute name="${key}" value="${value}"/>
</my:htmlTable>Finally, after thinking about this in this email, I wonder what scope the variable created by dynamic-attributes="dybamicAttributes" is stored in. I assumed it was a scope too small for the next tag to see. But maybe you could just try to see if the variable is present:

<my:requestHeader content="${header}" border="0" cellspacing="1" cellpadding="2" />

<%@ tag body-content="empty" dynamic-attributes="dynamicAttributes" %>
<%@ attribute name="content" required="true" type="java.util.Map" %>
<my:htmlTable content="${content}" />

<%@ tag body-content="empty" %>
<%@ attribute name="content" required="true" type="java.util.Map" %>
Dynamic Attributes Seen? da="${dynamicAttributes}"
//then do table work using "dynamicAttributes"

How can I bind a dynamic attribute of a context node to ALV?

Hi all,
I'm trying to show data with Webdynpor ALV, but i met a question which blocked me. The situation is that there is a static context node and it's mapped to WD ALV, while programming I create a dynamic attribute to the context node. The dynamic column can be shown on the UI, but there is no any data in it. How can i deal with it?
Thanks a lot!
Edited by: Julia Zhu on Dec 3, 2009 7:48 AM

Hi Julia,
Welcome to SDN.
Post it in the ABAP webdynpro forum to get quick replies. Web Dynpro ABAP
Also search in sdn as there are chances that somebody has already posted the queries related to same issue.
Regards,
Swarna Munukoti.

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