Some static utility methods moved to new class ModelElementUtils

refs 337

org.fortiss.tooling.base/trunk/src/org/fortiss/tooling/base/utils/ModelElementUtils.java

+/*--------------------------------------------------------------------------+
+$Id: codetemplates.xml 1 2011-01-01 00:00:01Z hoelzl $
+|                                                                          |
+| Copyright 2011 ForTISS GmbH                     |
+|                                                                          |
+| Licensed under the Apache License, Version 2.0 (the "License");          |
+| you may not use this file except in compliance with the License.         |
+| You may obtain a copy of the License at                                  |
+|                                                                          |
+|    http://www.apache.org/licenses/LICENSE-2.0                            |
+|                                                                          |
+| Unless required by applicable law or agreed to in writing, software      |
+| distributed under the License is distributed on an "AS IS" BASIS,        |
+| WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
+| See the License for the specific language governing permissions and      |
+| limitations under the License.                                           |
++--------------------------------------------------------------------------*/
+package org.fortiss.tooling.base.utils;
+
+import java.util.Collection;
+import java.util.LinkedList;
+import java.util.List;
+
+import org.fortiss.tooling.base.model.element.IHiddenSpecification;
+import org.fortiss.tooling.base.model.element.IModelElement;
+import org.fortiss.tooling.base.model.element.IModelElementSpecification;
+
+/**
+ * Utility class for model elements.
+ * 
+ * @see IModelElement
+ * @see IModelElementSpecification
+ * 
+ * @author trachtenherz
+ * @author $Author: hoelzl $
+ * @version $Rev: 18709 $
+ * @ConQAT.Rating RED Hash:
+ */
+public class ModelElementUtils {
+	/**
+	 * Returns a list of specifications from {@code specifications} that are not
+	 * subclass of {@link IHiddenSpecification}.
+	 */
+	public static List<IModelElementSpecification> nonHiddenSpecifications(
+			Collection<IModelElementSpecification> specifications) {
+		List<IModelElementSpecification> res = new LinkedList<IModelElementSpecification>();
+		for (IModelElementSpecification s : specifications) {
+			if (!(s instanceof IHiddenSpecification)) {
+				res.add(s);
+			}
+		}
+		return res;
+	}
+
+	/**
+	 * Returns the {@link IModelElementSpecification#specificationDescription()}
+	 * result for {@code spec}.
+	 * <p>
+	 * If the specification is hidden (instance of {@link IHiddenSpecification})
+	 * or does not support this operation (
+	 * {@link IModelElementSpecification#specificationDescription()} throws
+	 * {@link UnsupportedOperationException}) then empty string is returned.
+	 * 
+	 */
+	public static String specificationDescription(
+			IModelElementSpecification spec) {
+		if (spec instanceof IHiddenSpecification) {
+			// Empty representation for hidden specifications
+			return "";
+		}
+		try {
+			return spec.specificationDescription();
+		} catch (UnsupportedOperationException e) {
+			return "";
+		}
+	}
+}