/*
* Copyright (c) 2006, 2007 Borland Software Corporation.
* 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:
* Richard Gronback (Borland) - initial API and implementation
*/
package org.eclipse.gmf.examples.mindmap.rcp.expressions;
import java.math.BigDecimal;
import java.math.BigInteger;
import java.util.Collection;
import java.util.Collections;
import java.util.Iterator;
import java.util.Map;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.core.runtime.Platform;
import org.eclipse.core.runtime.Status;
import org.eclipse.emf.ecore.EClassifier;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.emf.ecore.EStructuralFeature;
import org.eclipse.emf.ecore.ETypedElement;
import org.eclipse.emf.ecore.util.EcoreUtil;
import org.eclipse.gmf.examples.mindmap.rcp.part.MindmapDiagramEditorPlugin;
/**
* @generated
*/
public abstract class MindmapAbstractExpression {
/**
* @generated
*/
private static final boolean DISABLED_NO_IMPL_EXCEPTION_LOG = Boolean
.valueOf(
Platform.getDebugOption(MindmapDiagramEditorPlugin
.getInstance().getBundle().getSymbolicName()
+ "/debug/disableNoExprImplExceptionLog")).booleanValue(); //$NON-NLS-1$
/**
* @generated
*/
private IStatus status = Status.OK_STATUS;
/**
* @generated
*/
protected void setStatus(int severity, String message, Throwable throwable) {
String pluginID = MindmapDiagramEditorPlugin.ID;
this.status = new Status(severity, pluginID, -1,
(message != null) ? message : "", throwable); //$NON-NLS-1$
if (!this.status.isOK()) {
MindmapDiagramEditorPlugin
.getInstance()
.logError(
"Expression problem:" + message + "body:" + body(), throwable); //$NON-NLS-1$ //$NON-NLS-2$
}
}
/**
* @generated
*/
public IStatus getStatus() {
return status;
}
/**
* @generated
*/
private final String myBody;
/**
* @generated
*/
public String body() {
return myBody;
}
/**
* @generated
*/
private final EClassifier myContext;
/**
* @generated
*/
public EClassifier context() {
return myContext;
}
/**
* @generated
*/
protected MindmapAbstractExpression(EClassifier context) {
this(null, context);
}
/**
* @generated
*/
protected MindmapAbstractExpression(String body, EClassifier context) {
myBody = body;
myContext = context;
}
/**
* @generated
*/
protected abstract Object doEvaluate(Object context, Map env);
/**
* @generated
*/
public Object evaluate(Object context) {
return evaluate(context, Collections.EMPTY_MAP);
}
/**
* @generated
*/
public Object evaluate(Object context, Map env) {
if (context().isInstance(context)) {
try {
return doEvaluate(context, env);
} catch (Exception e) {
if (DISABLED_NO_IMPL_EXCEPTION_LOG
&& e instanceof NoImplException) {
return null;
}
MindmapDiagramEditorPlugin.getInstance().logError(
"Expression evaluation failure: " + body(), e); //$NON-NLS-1$
}
}
return null;
}
/**
* @generated
*/
public void assignTo(EStructuralFeature feature, EObject target) {
Object value = evaluate(target);
value = (value != null) ? performCast(value, feature) : null;
if (feature.isMany()) {
Collection destCollection = (Collection) target.eGet(feature);
destCollection.clear();
if (value instanceof Collection) {
Collection valueCollection = (Collection) value;
for (Iterator it = valueCollection.iterator(); it.hasNext();) {
destCollection.add(performCast(it.next(), feature));
}
} else {
destCollection.add(value);
}
return;
}
target.eSet(feature, value);
}
/**
* @generated
*/
protected Object performCast(Object value, ETypedElement targetType) {
if (targetType.getEType() == null
|| targetType.getEType().getInstanceClass() == null) {
return value;
}
Class targetClass = targetType.getEType().getInstanceClass();
if (value != null && value instanceof Number) {
Number num = (Number) value;
Class valClass = value.getClass();
Class targetWrapperClass = targetClass;
if (targetClass.isPrimitive()) {
targetWrapperClass = EcoreUtil.wrapperClassFor(targetClass);
}
if (valClass.equals(targetWrapperClass)) {
return value;
}
if (Number.class.isAssignableFrom(targetWrapperClass)) {
if (targetWrapperClass.equals(Byte.class))
return new Byte(num.byteValue());
if (targetWrapperClass.equals(Integer.class))
return new Integer(num.intValue());
if (targetWrapperClass.equals(Short.class))
return new Short(num.shortValue());
if (targetWrapperClass.equals(Long.class))
return new Long(num.longValue());
if (targetWrapperClass.equals(BigInteger.class))
return BigInteger.valueOf(num.longValue());
if (targetWrapperClass.equals(Float.class))
return new Float(num.floatValue());
if (targetWrapperClass.equals(Double.class))
return new Double(num.doubleValue());
if (targetWrapperClass.equals(BigDecimal.class))
return new BigDecimal(num.doubleValue());
}
}
return value;
}
/**
* @generated
*/
public static final MindmapAbstractExpression createNullExpression(
EClassifier context) {
return new MindmapAbstractExpression(context) {
protected Object doEvaluate(Object context, Map env) {
// TODO - log entry about not provider available for this expression
return null;
}
};
}
/**
* @generated
*/
public static class NoImplException extends RuntimeException {
/**
* @generated
*/
public NoImplException(String message) {
super(message);
}
}
}