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QueryNode.javaAPI DocGlassfish v2 API6525Fri May 04 22:31:40 BST 2007com.sun.enterprise.deployment.node.ejb

QueryNode

public class QueryNode extends com.sun.enterprise.deployment.node.DeploymentDescriptorNode
This class is responsible for hanlding the query element
author
Jerome Dochez
version

Fields Summary
private com.sun.enterprise.deployment.QueryDescriptor
descriptor
Constructors Summary
public QueryNode()
Creates new QueryNode

    
        
      
        super();
        registerElementHandler(new XMLElement(EjbTagNames.QUERY_METHOD), 
                                                                MethodNode.class, "setQueryMethodDescriptor");
Methods Summary
public java.lang.ObjectgetDescriptor()

return
the Descriptor subclass that was populated by reading the source XML file

        if (descriptor == null) {
            descriptor = (QueryDescriptor) super.getDescriptor();
        } 
        return descriptor;
protected java.util.MapgetDispatchTable()
all sub-implementation of this class can use a dispatch table to map xml element to method name on the descriptor class for setting the element value.

return
the map with the element name as a key, the setter method as a value

        // no need to be synchronized for now
        Map table = super.getDispatchTable();
        table.put(EjbTagNames.EJB_QL, "setQuery");    
        return table;
public voidsetElementValue(com.sun.enterprise.deployment.node.XMLElement element, java.lang.String value)
receives notiification of the value for a particular tag

param
element the xml element
param
value it's associated value

    
        if (EjbTagNames.QUERY_RESULT_TYPE_MAPPING.equals(element.getQName())) {
            if (EjbTagNames.QUERY_REMOTE_TYPE_MAPPING.equals(value)) {
                descriptor.setHasRemoteReturnTypeMapping();
            } else if (EjbTagNames.QUERY_LOCAL_TYPE_MAPPING.equals(value)) {            
                descriptor.setHasLocalReturnTypeMapping();
            } else {
                DOLUtils.getDefaultLogger().log(Level.SEVERE, "enterprise.deployment.backend.addDescriptorFailure",
                                new Object[] {((Descriptor) getParentNode().getDescriptor()).getName() , value});
            }
        } else {
            super.setElementValue(element, value);
        }
public org.w3c.dom.NodewriteDescriptor(org.w3c.dom.Node parent, java.lang.String nodeName, com.sun.enterprise.deployment.QueryDescriptor descriptor)
write the descriptor class to a DOM tree and return it

param
parent node in the DOM tree
param
node name for the root element of this xml fragment
param
the descriptor to write
return
the DOM tree top node

        
        Node queryNode = super.writeDescriptor(parent, nodeName, descriptor);

        writeLocalizedDescriptions(queryNode, descriptor);
                
        // query-method
        MethodNode methodNode = new MethodNode();
        methodNode.writeQueryMethodDescriptor(queryNode, EjbTagNames.QUERY_METHOD, 
                                                                         descriptor.getQueryMethodDescriptor());
        
        if (descriptor.getHasRemoteReturnTypeMapping()) {            
            appendTextChild(queryNode, EjbTagNames.QUERY_RESULT_TYPE_MAPPING, 
                                                    EjbTagNames.QUERY_REMOTE_TYPE_MAPPING);     
        } else {
	    if (descriptor.getHasLocalReturnTypeMapping()) {
                appendTextChild(queryNode, EjbTagNames.QUERY_RESULT_TYPE_MAPPING,
                                                    EjbTagNames.QUERY_LOCAL_TYPE_MAPPING);
            }
	}
        // ejbql element is mandatory.  If no EJB QL query has been
        // specified for the method, the xml element will be empty
        String ejbqlText = descriptor.getIsEjbQl() ? descriptor.getQuery() : "";        
        Node child = appendChild(queryNode, EjbTagNames.EJB_QL);
        child.appendChild(getOwnerDocument(child).createTextNode(ejbqlText));          
        
        return queryNode;