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/******************************************************************************
*
* Author: Shing Wai Chan (shingwai@iplanet.com)
*
*****************************************************************************/
package com.sun.jdo.spi.persistence.support.ejb.enhancer.meta;
import java.lang.reflect.Modifier;
import java.util.ArrayList;
import java.util.List;
import com.sun.jdo.api.persistence.enhancer.meta.ExtendedJDOMetaData;
import com.sun.jdo.api.persistence.enhancer.meta.JDOMetaDataFatalError;
import com.sun.jdo.api.persistence.enhancer.meta.JDOMetaDataModelImpl;
import com.sun.jdo.api.persistence.enhancer.meta.JDOMetaDataUserException;
import com.sun.jdo.api.persistence.model.jdo.PersistenceFieldElement;
import com.sun.jdo.api.persistence.model.Model;
/**
* Provide MetaDataModel Class used by CMP code generation during
* EJB deployment.
* Note that classPath is used for I/O of MetaData and
* className is used for I/O of Model.
* @author Shing Wai Chan
*/
public class EJBMetaDataModelImpl extends JDOMetaDataModelImpl
implements ExtendedJDOMetaData {
public EJBMetaDataModelImpl(Model model)
throws JDOMetaDataUserException, JDOMetaDataFatalError {
super(model);
}
//methods from ExtendedJDOMetaData, not in JDOMetaData
public String[] getKnownClasses()
throws JDOMetaDataUserException, JDOMetaDataFatalError {
throw new UnsupportedOperationException();
}
public String[] getKnownFields(String classPath)
throws JDOMetaDataUserException, JDOMetaDataFatalError {
return getManagedFields(classPath);
}
public String getFieldType(String classPath, String fieldName)
throws JDOMetaDataUserException, JDOMetaDataFatalError {
final String className = pathToName(classPath);
String ftype = model.getFieldType(className, fieldName);
return nameToPath(ftype);
}
public int getClassModifiers(String classPath)
throws JDOMetaDataUserException, JDOMetaDataFatalError {
return Modifier.PUBLIC;
}
public int getFieldModifiers(String classPath, String fieldName)
throws JDOMetaDataUserException, JDOMetaDataFatalError {
final String className = pathToName(classPath);
return model.getModifiers(model.getField(className, fieldName));
}
public String getKeyClass(String classPath)
throws JDOMetaDataUserException, JDOMetaDataFatalError {
final String className = pathToName(classPath);
String keyClass = model.getPersistenceClass(className).getKeyClass();
if (keyClass.toLowerCase().endsWith(".oid")) {
int ind = keyClass.lastIndexOf('.');
keyClass = keyClass.substring(0, ind) + "$Oid";
}
return nameToPath(keyClass);
}
public boolean isKnownNonManagedField(String classPath,
String fieldName, String fieldSig)
throws JDOMetaDataUserException, JDOMetaDataFatalError {
return !isPersistentField(classPath, fieldName);
}
public boolean isManagedField(String classPath, String fieldName)
throws JDOMetaDataUserException, JDOMetaDataFatalError {
return (isPersistentField(classPath, fieldName)
|| isTransactionalField(classPath, fieldName));
}
public boolean isKeyField(String classPath, String fieldName)
throws JDOMetaDataUserException, JDOMetaDataFatalError {
return isPrimaryKeyField(classPath, fieldName);
}
public boolean isPrimaryKeyField(String classPath, String fieldName)
throws JDOMetaDataUserException, JDOMetaDataFatalError
{
final String className = pathToName(classPath);
final PersistenceFieldElement pfe
= model.getPersistenceField(className, fieldName);
if (pfe != null) {
return pfe.isKey();
} else {
return false;
}
}
public int getFieldFlags(String classPath, String fieldName)
throws JDOMetaDataUserException, JDOMetaDataFatalError {
if (!isManagedField(classPath, fieldName)) {
affirm(!isTransactionalField(classPath, fieldName));
affirm(!isPersistentField(classPath, fieldName));
affirm(!isKeyField(classPath, fieldName));
affirm(!isDefaultFetchGroupField(classPath, fieldName));
return 0;
}
//affirm(isManagedField(classPath, fieldName));
if (isTransactionalField(classPath, fieldName)) {
affirm(!isPersistentField(classPath, fieldName));
affirm(!isKeyField(classPath, fieldName));
// ignore any dfg membership of transactional fields
//affirm(!isDefaultFetchGroupField(classPath, fieldName));
return CHECK_WRITE;
}
//affirm(!isTransactionalField(classPath, fieldName));
affirm(isPersistentField(classPath, fieldName));
if (isKeyField(classPath, fieldName)) {
// ignore any dfg membership of key fields
//affirm(!isDefaultFetchGroupField(classPath, fieldName));
return MEDIATE_WRITE;
}
//affirm(!isKeyField(classPath, fieldName));
if (isDefaultFetchGroupField(classPath, fieldName)) {
if (Boolean.getBoolean("AllowMediatedWriteInDefaultFetchGroup")) {
return CHECK_READ | MEDIATE_WRITE;
}
return CHECK_READ | CHECK_WRITE;
}
//affirm(!isDefaultFetchGroupField(classPath, fieldName));
return MEDIATE_READ | MEDIATE_WRITE;
}
public int[] getFieldFlags(String classPath, String[] fieldNames)
throws JDOMetaDataUserException, JDOMetaDataFatalError {
final int n = (fieldNames != null ? fieldNames.length : 0);
final int[] flags = new int[n];
for (int i = 0; i < n; i++) {
flags[i] = getFieldFlags(classPath, fieldNames[i]);
}
return flags;
}
public String[] getFieldType(String className, String[] fieldNames)
throws JDOMetaDataUserException, JDOMetaDataFatalError {
final int n = (fieldNames != null ? fieldNames.length : 0);
final String[] types = new String[n];
for (int i = 0; i < n; i++) {
types[i] = getFieldType(className, fieldNames[i]);
}
return types;
}
public int[] getFieldNo(String classPath, String[] fieldNames)
throws JDOMetaDataUserException, JDOMetaDataFatalError {
final int n = (fieldNames != null ? fieldNames.length : 0);
final int[] flags = new int[n];
for (int i = 0; i < n; i++) {
flags[i] = getFieldNo(classPath, fieldNames[i]);
}
return flags;
}
public String[] getKeyFields(String classPath)
throws JDOMetaDataUserException, JDOMetaDataFatalError {
final List keys = new ArrayList();
final String[] fieldNames = getManagedFields(classPath);
final int n = fieldNames.length;
for (int i = 0; i < n; i++) {
if (isKeyField(classPath, fieldNames[i])) {
keys.add(fieldNames[i]);
}
}
return (String[])keys.toArray(new String[keys.size()]);
}
public String getPersistenceCapableSuperClass(String classPath)
throws JDOMetaDataUserException, JDOMetaDataFatalError {
return null;
}
public String getSuperKeyClass(String classPath)
throws JDOMetaDataUserException, JDOMetaDataFatalError {
return null;
}
}
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