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EntityManagerReferenceNode.javaAPI DocGlassfish v2 API7256Fri May 04 22:31:38 BST 2007com.sun.enterprise.deployment.node

EntityManagerReferenceNode

public class EntityManagerReferenceNode extends DeploymentDescriptorNode
This node handles all persistence-context-ref xml tag elements
author
Shing Wai Chan
version

Fields Summary
private static final String
TRANSACTION
private static final String
EXTENDED
private String
propertyName
Constructors Summary
public EntityManagerReferenceNode()


      
        super();
        registerElementHandler(new XMLElement(TagNames.INJECTION_TARGET), 
                                InjectionTargetNode.class, "addInjectionTarget");
Methods Summary
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(TagNames.PERSISTENCE_CONTEXT_REF_NAME, "setName");
        table.put(TagNames.PERSISTENCE_UNIT_NAME, "setUnitName");        
        return table;
public voidsetElementValue(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 (TagNames.PERSISTENCE_CONTEXT_TYPE.equals(element.getQName())) {
            EntityManagerReferenceDescriptor entityMgrReferenceDescriptor =
                (EntityManagerReferenceDescriptor)getDescriptor();
            PersistenceContextType contextType = null;
            if (EXTENDED.equals(value)) {
                contextType = PersistenceContextType.EXTENDED;
            } else if (TRANSACTION.equals(value)) {
                contextType = PersistenceContextType.TRANSACTION;
            } else {
                throw new IllegalArgumentException(localStrings.getLocalString(
                "enterprise.deployment.node.invalidvalue",
                "Invalid value for a tag under {0} : {1}",
                new Object[] {TagNames.PERSISTENCE_CONTEXT_TYPE, value}));
            }

            entityMgrReferenceDescriptor.setPersistenceContextType(contextType);

        } else if (TagNames.NAME_VALUE_PAIR_NAME.equals(element.getQName())) {
            propertyName = value;
        } else if (TagNames.NAME_VALUE_PAIR_VALUE.equals(element.getQName())) {
            EntityManagerReferenceDescriptor entityMgrReferenceDescriptor =
                (EntityManagerReferenceDescriptor)getDescriptor();
            entityMgrReferenceDescriptor.addProperty(propertyName, value);
            propertyName = null;
        } else {
            super.setElementValue(element, value);
        }
public org.w3c.dom.NodewriteDescriptor(org.w3c.dom.Node parent, java.lang.String nodeName, com.sun.enterprise.deployment.EntityManagerReferenceDescriptor 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 entityMgrRefNode = appendChild(parent, nodeName);
        writeLocalizedDescriptions(entityMgrRefNode, descriptor);
        
        appendTextChild(entityMgrRefNode, TagNames.PERSISTENCE_CONTEXT_REF_NAME, descriptor.getName());      
        appendTextChild(entityMgrRefNode, TagNames.PERSISTENCE_UNIT_NAME, descriptor.getUnitName());      
        PersistenceContextType contextType = descriptor.getPersistenceContextType();
        String contextTypeString = (contextType != null &&
            PersistenceContextType.EXTENDED.equals(contextType)) ?
            EXTENDED : TRANSACTION;
        appendTextChild(entityMgrRefNode, TagNames.PERSISTENCE_CONTEXT_TYPE,
            contextTypeString);

        for(Map.Entry<String, String> property : 
                descriptor.getProperties().entrySet()) {
            Node propertyNode = appendChild(entityMgrRefNode, 
                                            TagNames.PERSISTENCE_PROPERTY);
            appendTextChild(propertyNode, TagNames.NAME_VALUE_PAIR_NAME,
                            property.getKey());
            appendTextChild(propertyNode, TagNames.NAME_VALUE_PAIR_VALUE,
                            property.getValue());
        }

        if( descriptor.isInjectable() ) {
            InjectionTargetNode ijNode = new InjectionTargetNode();
            for (InjectionTarget target : descriptor.getInjectionTargets()) {
                ijNode.writeDescriptor(entityMgrRefNode, TagNames.INJECTION_TARGET, target);
            }
        }
            
        return entityMgrRefNode;