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/*******************************************************************************
* Copyright (c) 2000, 2004 IBM Corporation and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.jst.ws.internal.common;
import java.util.Iterator;
import java.util.List;
import java.util.Vector;
import org.eclipse.core.resources.IProject;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.jem.util.emf.workbench.nature.EMFNature;
import org.eclipse.jem.workbench.utility.JemProjectUtilities;
import org.eclipse.jem.java.JavaClass;
import org.eclipse.jem.java.JavaRefFactory;
import org.eclipse.jem.java.JavaVisibilityKind;
import org.eclipse.jem.java.Method;
/**
* This class contains some useful utilities for dealing with the JavaMOF
*/
public final class JavaMOFUtils
{
/**
* Determine whether this class of the given name is loadable in the given
* project.
* @param className The fully qualified name of the class
* @param project The project
* @return True if the class is loadable and no exceptions are thrown.
*/
public static boolean isClassLoadable(String className, IProject project) throws CoreException
{
return isClassLoadable(getJavaClass(className,project));
}
public static boolean isClassLoadable(JavaClass javaClass)
{
return javaClass.isExistingType();
}
/**
* Determine whether the specified class has a public constructor
* with an empty parameter list.
* @param className The fully qualified name of the class
* @param project The project
* @return True if the class is loadable from the project and the
* class has a public constructor with an empty parameter list
*/
public static boolean hasPublicDefaultCtor(String className, IProject project) throws CoreException
{
return hasPublicDefaultCtor(getJavaClass(className, project));
}
public static boolean hasPublicDefaultCtor(JavaClass javaClass)
{
List methodList = javaClass.getMethods();
if (methodList==null)
return true;
Iterator iMethods = methodList.iterator();
boolean userDefinedCtor = false;
while (iMethods.hasNext())
{
Method thisMethod = (Method)iMethods.next();
if (thisMethod.isConstructor())
{
userDefinedCtor = true;
//Since the user has defined a ctor, the default ctor is no longer available.
//We must ensure that the user has provided a public ctor with no parameters.
//check if public
if (thisMethod.getJavaVisibility().getValue() == JavaVisibilityKind.PUBLIC)
{
//see if parameter list is empty
List paramList = thisMethod.getParameters();
if (paramList.isEmpty() )
{
return true;
}
}
}
}
if (userDefinedCtor)
{
return false; //if the user defined a ctor and we still haven't
//returned true, none of them were public with no parameters.
}
else
{
return true;
}
}
/**
* Determine whether the specified class implements the specified interface.
* @param className The fully qualified name of the class
* @param interfaceName The fully qualified name of the interface
* @param project The project
* @return True if the class and interface are loadable from the project and
* the class implements the interface.
*/
public static boolean implementsInterface(String className, String interfaceName, IProject project)
throws CoreException
{
return implementsInterface(getJavaClass(className, project), getJavaClass(interfaceName, project));
}
public static boolean implementsInterface(JavaClass javaClass, JavaClass interfaceClass)
{
if (!javaClass.isExistingType()) return false;
if (!interfaceClass.isExistingType()) return false;
return javaClass.implementsInterface(interfaceClass);
}
/**
* Determine whether the specified class extends the specified superclass
* @param className The fully qualified name of the class
* @param superClassName The fully qualified name of the superclass
* @param project The project
* @return True if the class and superClass are loadable from the project and
* the class extends the superClass
*/
public static boolean extendsClass(String className, String superClassName, IProject project)
throws CoreException
{
return extendsClass(getJavaClass(className,project), getJavaClass(superClassName, project));
}
public static boolean extendsClass(JavaClass javaClass, JavaClass superClass)
{
return superClass.isAssignableFrom(javaClass);
}
/**
* Determine whether the specified class is actually an interface
* @param className The fully qualified name of the class
* @param project The project
* @return True if the class is loadable from the project and is
* actually an interface
*/
public static boolean isInterface(String className, IProject project) throws CoreException
{
return isInterface(getJavaClass(className, project));
}
public static boolean isInterface(JavaClass javaClass)
{
return javaClass.isInterface();
}
public static boolean hasAbstractMethods (String className, IProject project) throws CoreException
{
return hasAbstractMethods(getJavaClass(className, project));
}
public static boolean hasAbstractMethods (JavaClass javaClass)
{
List methodList = javaClass.getMethods();
if (methodList==null)
return false;
Iterator iMethods = methodList.iterator();
while (iMethods.hasNext())
{
Method thisMethod = (Method)iMethods.next();
if ( thisMethod.isAbstract()) return true;
}
return false;
}
/*
*
*/
/**
* @param classQName Fully qualified classname (packageName + typeName)
* @param project
* @return
* @throws CoreException
*/
public static JavaClass getJavaClass(String classQName , IProject project) throws CoreException
{
EMFNature jMOF = JemProjectUtilities.getJEM_EMF_Nature(project, true);
return (JavaClass)JavaRefFactory.eINSTANCE.reflectType(classQName,jMOF.getResourceSet());
}
/**
* @param packageName
* @param typeName
* @param project
* @return
* @throws CoreException
*/
public static JavaClass getJavaClass(String packageName, String typeName , IProject project) throws CoreException
{
EMFNature jMOF = JemProjectUtilities.getJEM_EMF_Nature(project, true);
return (JavaClass)JavaRefFactory.eINSTANCE.reflectType(packageName, typeName, jMOF.getResourceSet());
}
public static boolean isValidSEIFile(JavaClass beanClass, JavaClass seiClass)
{
if (!seiClass.isInterface())
return false;
Vector beanMethodsList = new Vector();
List beanMethods = beanClass.getMethods();
Iterator beanMethodsIterator = beanMethods.iterator();
while (beanMethodsIterator.hasNext())
{
Method thisMethod = (Method)beanMethodsIterator.next();
beanMethodsList.add(thisMethod.getMethodElementSignature());
}
List seiMethods = seiClass.getMethods();
if (beanMethods == null ) {
if ( seiMethods == null) return true;
else return false;
}
if (seiMethods == null) return false;
Iterator seiMethodsIterator = seiMethods.iterator();
while (seiMethodsIterator.hasNext())
{
Method thisMethod = (Method)seiMethodsIterator.next();
if ( !beanMethodsList.contains(thisMethod.getMethodElementSignature())) {
return false;
}
}
return true;
}
}
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