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/*
* EJBBundleInfoHelper.java
*
* Created on October 15, 2004, 1:51 PM
*/
package com.sun.jdo.spi.persistence.support.ejb.ejbc;
import java.util.*;
import com.sun.enterprise.deployment.*;
import org.netbeans.modules.dbschema.SchemaElement;
import com.sun.jdo.api.persistence.model.Model;
import com.sun.jdo.api.persistence.mapping.ejb.*;
import com.sun.jdo.spi.persistence.support.ejb.model.DeploymentDescriptorModel;
import com.sun.jdo.spi.persistence.support.sqlstore.ejb.DeploymentHelper;
/** This is a class which implements the EJBInfoHelper interface
* based on EjbBundleDescriptor and other DOL classes.
*
* @author Rochelle Raccah
*/
public class EJBBundleInfoHelper implements EJBInfoHelper {
private static final char UNDERLINE = '_'; // NOI18N
private static final char DOT = '.'; // NOI18N
private final EjbBundleDescriptor bundleDescriptor;
private Collection availableSchemaNames;
private NameMapper nameMapper; // standard one
private Model model;
/** Creates a new instance of EJBBundleInfoHelper
* @param bundleDescriptor the EjbBundleDescriptor which defines the
* universe of names for this application.
* @param availableSchemaNames a Collection of available schemas
* in the application - used only during development
*/
public EJBBundleInfoHelper(EjbBundleDescriptor bundleDescriptor,
Collection availableSchemaNames) {
this(bundleDescriptor, null, null, availableSchemaNames);
}
/** Creates a new instance of EJBBundleInfoHelper
* @param bundleDescriptor the EjbBundleDescriptor which defines the
* universe of names for this application.
* @param nameMapper the NameMapper object to be used - allows
* a client to supply its own mapper to the helper rather than
* have the helper construct a new instance
* @param model the Model object to be used - allows
* a client to supply its own mapper to the helper rather than
* have the helper construct a new instance
* @param availableSchemaNames a Collection of available schemas
* in the application - used only during development
*/
EJBBundleInfoHelper(EjbBundleDescriptor bundleDescriptor,
NameMapper nameMapper, Model model,
Collection availableSchemaNames) {
this.bundleDescriptor = bundleDescriptor;
this.nameMapper = nameMapper;
this.model = model;
this.availableSchemaNames = availableSchemaNames;
}
/** Gets the EjbBundleDescriptor which defines the universe of
* names for this application.
* @return the EjbBundleDescriptor which defines the universe of
* names for this application.
*/
private EjbBundleDescriptor getBundleDescriptor() {
return bundleDescriptor;
}
/**
* @see EJBInfoHelper#getEjbJarDisplayName
*/
public String getEjbJarDisplayName() {
return bundleDescriptor.getName();
}
/** Gets a collection of names of schemas defined in this
* ejb jar. This implementation simply returns the list passed in
* the constructor or <code>null</code> if there was none supplied.
* @return a collection schema names
*/
public Collection getAvailableSchemaNames () {
return availableSchemaNames;
}
/** Gets the name to use for schema generation. This implementation
* uses a combo of app name, module name, etc.
* @return the name to use for schema generation
*/
public String getSchemaNameToGenerate() {
// make sure there is no '.' in schema name
return DeploymentHelper.getDDLNamePrefix(
getBundleDescriptor()).replace(DOT, UNDERLINE);
}
/** Gets the schema with the specified name, loading it if necessary.
* This implementation uses the class loader as the extra context
* information used to load.
* @param schemaName the name of the schema to be loaded
* @return the schema object
*/
public SchemaElement getSchema(String schemaName) {
return SchemaElement.forName(schemaName, getClassLoader());
}
/**
* @see EJBInfoHelper#getEjbNames
*/
public Collection getEjbNames() {
Iterator iterator = getBundleDescriptor().getEjbs().iterator();
ArrayList returnList = new ArrayList();
while (iterator.hasNext()) {
EjbDescriptor ejb = (EjbDescriptor)iterator.next();
if (ejb instanceof EjbCMPEntityDescriptor)
returnList.add(ejb.getName());
}
return returnList;
}
/**
* @see EJBInfoHelper#getFieldsForEjb
*/
public Collection getFieldsForEjb(String ejbName) {
Iterator iterator = getModel().getFields(ejbName).iterator();
ArrayList returnList = new ArrayList();
while (iterator.hasNext())
returnList.add(iterator.next());
return returnList;
}
/**
* @see EJBInfoHelper#getRelationshipsForEjb
*/
public Collection getRelationshipsForEjb(String ejbName) {
Iterator iterator = getBundleDescriptor().getRelationships().iterator();
ArrayList returnList = new ArrayList();
// TODO: issue of usage of this - several iterations of this if
// iterating all the bean - but, I think it can change, so can't
// cache it in a map (same comment applies to getEjbNames and
// getFieldsForEjb)
while (iterator.hasNext()) {
RelationshipDescriptor relD =
(RelationshipDescriptor)iterator.next();
RelationRoleDescriptor testRole = relD.getSource();
String cmrField = null;
if (ejbName.equals(testRole.getOwner().getName())) {
cmrField = testRole.getCMRField();
if (cmrField != null)
returnList.add(cmrField);
}
testRole = relD.getSink();
if (ejbName.equals(testRole.getOwner().getName())) {
cmrField = testRole.getCMRField();
if (cmrField != null)
returnList.add(cmrField);
}
}
return returnList;
}
/** Gets the class loader which corresponds to this ejb bundle.
* @return the class loader which corresponds to this ejb bundle
*/
public ClassLoader getClassLoader() {
return bundleDescriptor.getClassLoader();
}
/**
* @see EJBInfoHelper#getNameMapper
*/
public AbstractNameMapper getNameMapper() {
return getNameMapperInternal();
}
/**
* @see EJBInfoHelper#createUniqueNameMapper
*/
public AbstractNameMapper createUniqueNameMapper() {
return new NameMapper(bundleDescriptor);
}
private NameMapper getNameMapperInternal() {
if (nameMapper == null)
nameMapper = new NameMapper(bundleDescriptor, false);
return nameMapper;
}
/**
* @see EJBInfoHelper#createConversionHelper
*/
public ConversionHelper createConversionHelper() {
return new EjbConversionHelper(getNameMapperInternal());
}
/**
* @see EJBInfoHelper#getModel
*/
public Model getModel() {
if (model == null) {
model = new DeploymentDescriptorModel(getNameMapperInternal(),
getClassLoader());
}
return model;
}
}
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