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package com.sun.enterprise.deployment.node;
import com.sun.enterprise.deployment.xml.PersistenceTagNames;
import com.sun.enterprise.deployment.PersistenceUnitDescriptor;
import java.util.Map;
import java.util.HashMap;
import org.xml.sax.Attributes;
/**
* This node is responsible for reading details about one <persistence-unit/>
* @author Sanjeeb.Sahoo@Sun.COM
*/
public class PersistenceUnitNode extends DeploymentDescriptorNode {
/**
* map of element names to method names in {@link PersistenceUnitDescriptor}
*/
private Map<String, String> dispatchTable;
/**
* This is the default constructor which is also called from other
* constructors of this class. Inside this constructor, we clear the
* handlers set up by super classes' constructors because they are
* not applicable in the context of PersistenceNode because
* unlike standard Java EE schemas, persistence.xsd does not include
* javaee_5.xsd for things like description, version etc.
*/
public PersistenceUnitNode() {
// clear all the handlers set up by super classes
// because that sets up a handler for description which we are not
// interested in.
if (handlers != null) handlers.clear();
initDispatchTable();
}
@Override public void startElement(
XMLElement element, Attributes attributes) {
if (PersistenceTagNames.PROPERTY.equals(element.getQName())) {
assert(attributes.getLength() == 2);
assert(attributes.getIndex(PersistenceTagNames.PROPERTY_NAME) !=
-1);
assert(attributes.getIndex(PersistenceTagNames.PROPERTY_VALUE) !=
-1);
PersistenceUnitDescriptor persistenceUnitDescriptor = (PersistenceUnitDescriptor) getDescriptor();
String propName = attributes.getValue(
PersistenceTagNames.PROPERTY_NAME);
String propValue = attributes.getValue(
PersistenceTagNames.PROPERTY_VALUE);
persistenceUnitDescriptor.addProperty(propName, propValue);
return;
}
super.startElement(element, attributes);
}
/**
* This returns the dispatch table for this node.
* Please note, unlike Java EE schemas persistence.xsd does not include
* standard elements or attributes (e.g. version, descriptionGroupRef etc.)
* from javaee_5.xsd, we don't use super classes' dispatch table.
* @return map of element names to method names in PersistenceUnitDescriptor
* @see super#getDispatchTable()
* @see #initDispatchTable()
*/
protected Map getDispatchTable() {
return dispatchTable;
}
/**
* Please note, unlike Java EE schemas persistence.xsd does not include
* standard elements or attributes (e.g. version, descriptionGroupRef etc.)
* from javaee_5.xsd, we don't use super classes' dispatch table.
*/
private void initDispatchTable() {
assert(dispatchTable == null);
// we don't do super.getDispatchTable() because we are not
// interested in any of super classes' disptcah table entries.
Map<String, String> table = new HashMap<String, String>();
// the values being put into the map represent method names
// in PersistenceUnitDescriptor class.
table.put(PersistenceTagNames.NAME, "setName");
table.put(PersistenceTagNames.TRANSACTION_TYPE, "setTransactionType");
table.put(PersistenceTagNames.DESCRIPTION, "setDescription");
table.put(PersistenceTagNames.PROVIDER, "setProvider");
table.put(PersistenceTagNames.JTA_DATA_SOURCE, "setJtaDataSource");
table.put(PersistenceTagNames.NON_JTA_DATA_SOURCE,
"setNonJtaDataSource");
table.put(PersistenceTagNames.MAPPING_FILE, "addMappingFile");
table.put(PersistenceTagNames.JAR_FILE, "addJarFile");
table.put(PersistenceTagNames.EXCLUDE_UNLISTED_CLASSES, "setExcludeUnlistedClasses");
table.put(PersistenceTagNames.CLASS, "addClass");
this.dispatchTable = table;
}
}