1 files changed, 164 insertions, 0 deletions
diff --git a/plugins/uml/diagram/org.eclipse.papyrus.uml.diagram.clazz/src/org/eclipse/papyrus/diagram/clazz/expressions/UMLAbstractExpression.java b/plugins/uml/diagram/org.eclipse.papyrus.uml.diagram.clazz/src/org/eclipse/papyrus/diagram/clazz/expressions/UMLAbstractExpression.java
new file mode 100644
index 00000000000..e866293057a
--- /dev/null
+++ b/plugins/uml/diagram/org.eclipse.papyrus.uml.diagram.clazz/src/org/eclipse/papyrus/diagram/clazz/expressions/UMLAbstractExpression.java
@@ -0,0 +1,164 @@
+/*****************************************************************************
+ * Copyright (c) 2010 CEA LIST.
+ *
+ *    
+ * 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:
+ *  Patrick Tessier (CEA LIST) Patrick.tessier@cea.fr - Initial API and implementation
+ */
+package org.eclipse.papyrus.diagram.clazz.expressions;
+
+import java.math.BigDecimal;
+import java.math.BigInteger;
+import java.util.Collections;
+import java.util.Map;
+
+import org.eclipse.core.runtime.IStatus;
+import org.eclipse.core.runtime.Status;
+import org.eclipse.emf.ecore.EClassifier;
+import org.eclipse.emf.ecore.EDataType;
+import org.eclipse.emf.ecore.EEnum;
+import org.eclipse.emf.ecore.EEnumLiteral;
+import org.eclipse.emf.ecore.util.EcoreUtil;
+import org.eclipse.papyrus.diagram.clazz.part.UMLDiagramEditorPlugin;
+
+/**
+ * @generated
+ */
+public abstract class UMLAbstractExpression {
+
+	/**
+	 * @generated
+	 */
+	private IStatus status = Status.OK_STATUS;
+
+	/**
+	 * @generated
+	 */
+	protected void setStatus(int severity, String message, Throwable throwable) {
+		String pluginID = UMLDiagramEditorPlugin.ID;
+		this.status = new Status(severity, pluginID, -1, (message != null) ? message : "", throwable); //$NON-NLS-1$
+		if(!this.status.isOK()) {
+			UMLDiagramEditorPlugin.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 UMLAbstractExpression(String body, EClassifier context) {
+		myBody = body;
+		myContext = context;
+	}
+
+	/**
+	 * @generated
+	 */
+	@SuppressWarnings("rawtypes")
+	protected abstract Object doEvaluate(Object context, Map env);
+
+	/**
+	 * @generated
+	 */
+	public Object evaluate(Object context) {
+		return evaluate(context, Collections.EMPTY_MAP);
+	}
+
+	/**
+	 * @generated
+	 */
+	@SuppressWarnings("rawtypes")
+	public Object evaluate(Object context, Map env) {
+		if(context().isInstance(context)) {
+			try {
+				return doEvaluate(context, env);
+			} catch (Exception e) {
+				UMLDiagramEditorPlugin.getInstance().logError("Expression evaluation failure: " + body(), e); //$NON-NLS-1$
+			}
+		}
+		return null;
+	}
+
+	/**
+	 * Expression may return number value which is not directly compatible with feature type (e.g. Double when Integer is expected), or EEnumLiteral
+	 * meta-object when literal instance is expected
+	 * 
+	 * @generated
+	 */
+	public static Object performCast(Object value, EDataType targetType) {
+		if(targetType instanceof EEnum) {
+			if(value instanceof EEnumLiteral) {
+				EEnumLiteral literal = (EEnumLiteral)value;
+				return (literal.getInstance() != null) ? literal.getInstance() : literal;
+			}
+		}
+		if(false == value instanceof Number || targetType == null || targetType.getInstanceClass() == null) {
+			return value;
+		}
+		Class<?> targetClass = targetType.getInstanceClass();
+		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;
+	}
+
+}