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package com.sun.enterprise.deployment.node;
import java.util.Map;
import javax.persistence.PersistenceContextType;
import org.w3c.dom.Node;
import com.sun.enterprise.deployment.Descriptor;
import com.sun.enterprise.deployment.InjectionTarget;
import com.sun.enterprise.deployment.EntityManagerReferenceDescriptor;
import com.sun.enterprise.deployment.xml.EjbTagNames;
import com.sun.enterprise.deployment.xml.TagNames;
/**
* This node handles all persistence-context-ref xml tag elements
*
* @author Shing Wai Chan
* @version
*/
public class EntityManagerReferenceNode extends DeploymentDescriptorNode {
private static final String TRANSACTION = "Transaction";
private static final String EXTENDED = "Extended";
// Holds property name during name/value processing.
private String propertyName = null;
public EntityManagerReferenceNode() {
super();
registerElementHandler(new XMLElement(TagNames.INJECTION_TARGET),
InjectionTargetNode.class, "addInjectionTarget");
}
/**
* 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
*/
protected Map getDispatchTable() {
// 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;
}
/**
* receives notiification of the value for a particular tag
*
* @param element the xml element
* @param value it's associated value
*/
public void setElementValue(XMLElement element, String 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);
}
}
/**
* 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
*/
public Node writeDescriptor(Node parent, String nodeName, EntityManagerReferenceDescriptor descriptor) {
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;
}
}