[esb-issues] [JBoss JIRA] Updated: (JBESB-1426) CBR XPathDSL should allow namespace aware documents

[Daniel Bevenius (JIRA)]

     [ http://jira.jboss.com/jira/browse/JBESB-1426?page=all ]

Daniel Bevenius updated JBESB-1426:
-----------------------------------

    Component/s: Documentation

Need to update documentation to describe how to use namespaces with XPathLanguage.dsl. 

> CBR XPathDSL should allow namespace aware documents
> ---------------------------------------------------
>
>                 Key: JBESB-1426
>                 URL: http://jira.jboss.com/jira/browse/JBESB-1426
>             Project: JBoss ESB
>          Issue Type: Feature Request
>      Security Level: Public(Everyone can see) 
>          Components: Documentation, Content Based Routing
>    Affects Versions: 4.2.1
>            Reporter: Vinicius Carvalho
>         Assigned To: Daniel Bevenius
>            Priority: Optional
>             Fix For: 4.4
>
>
> Current version of DSLHelper, does not allow one to use namespace documents to be routed. For instance, the document
> <acme:bomb xmlns:acme="http://acme.com/schemas">
> <acme:model></acme:model>
> </acme:bomb>
> does not work with the xpath expression : "//acme:model" since the xpath is not namespace-aware.
> The use of a namespace should allow this, the action should support it, for instance:
>  <action name="ContentBasedRouter" class="org.jboss.soa.esb.actions.ContentBasedRouter">
>  <property name="namespaces">
>   <namespace prefix="acme" uri="http://acme.com/schemas"/>
>   <namespace prefix="foo" uri="http://bar.com/schemas"/>
>  </property>
> </action>
> On the configuration of the action (sorry still trying to figure where to put this :( )
> the following namespace could  be used:
> package com.synos.csm.eai.xml;
> import javax.xml.XMLConstants;
> import javax.xml.namespace.NamespaceContext;
> import java.util.Iterator;
> import java.util.Map;
> import java.util.HashMap;
> import java.util.Set;
> import java.util.ArrayList;
> import java.util.List;
>  
> public class CustomNamespaceContext implements NamespaceContext {
>     private Map map;
>  
>     public CustomNamespaceContext() {
>     	map = new HashMap();
>     	map.put(XMLConstants.XML_NS_PREFIX, XMLConstants.XML_NS_URI);
>     	map.put(XMLConstants.XMLNS_ATTRIBUTE, XMLConstants.XMLNS_ATTRIBUTE_NS_URI);
> 	}
>  
>     public void addNamespace(String prefix, String namespaceURI) {
>         map.put(prefix, namespaceURI);
>     }
>  
>     public String getNamespaceURI(String prefix) {
>         return (String) map.get(prefix);
>     }
>  
>     public String getPrefix(String namespaceURI) {
>         Set keys = map.keySet();
>         for (Iterator iterator = keys.iterator(); iterator.hasNext();) 
> {
>             String prefix = (String) iterator.next();
>             String uri = (String) map.get(prefix);
>             if (uri.equals(namespaceURI)) return prefix;
>         }
>         return null;
>     }
>  
>     public Iterator getPrefixes(String namespaceURI) {
>         List prefixes = new ArrayList();
>         Set keys = map.keySet();
>         for (Iterator iterator = keys.iterator(); iterator.hasNext();) 
> {
>             String prefix = (String) iterator.next();
>             String uri = (String) map.get(prefix);
>             if (uri.equals(namespaceURI)) prefixes.add(prefix);
>         }
>         return prefixes.iterator();
>     }
> }
> now, inside the DSLHelper, set the namespace aware xpath:
> //check if user has set the namespace property
> if(namespaceAware)
>    xpath.setNamespaceContext(customNamespaceForThisAction);
> I had to override the DSLHelper in my project, I guess that this approach should help a lot

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