New exception type containing multiple ChainTransformation exceptions

Issue-Ref: 4168
Issue-Url: af3#4168



Signed-off-by: Irina Muntean <muntean@fortiss.org>

org.fortiss.tooling.kernel/src/org/fortiss/tooling/kernel/extension/exception/AllChainTransformationsFailedException.java

+/*-------------------------------------------------------------------------+
+| Copyright 2021 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.kernel.extension.exception;
+
+import java.util.List;
+
+/**
+ * 
+ * @author muntean
+ */
+public class AllChainTransformationsFailedException extends ChainTransformationFailedException {
+
+	/** Stores a reference to the transformation provider chain. */
+	private final List<ChainTransformationFailedException> exceptionList;
+
+	/** Constructor. */
+	public AllChainTransformationsFailedException(
+			List<ChainTransformationFailedException> exceptionList) {
+		super(null, null, null, null);
+		this.exceptionList = exceptionList;
+	}
+
+	/** {@inheritDoc} */
+	@Override
+	public String getMessage() {
+		return getMessage(0);
+	}
+
+	/**
+	 * @param i
+	 * @return
+	 */
+	private String getMessage(int counter) {
+		String msg = "";
+		for(TransformationFailedException ctfe : this.exceptionList) {
+			String tabs = addTabs(counter);
+			msg += tabs + "Failed Provider:\n";
+			msg += tabs + ctfe.getFailedProvider().getClass().getSimpleName() + "\n";
+
+			TransformationFailedException cause = (TransformationFailedException)ctfe.getCause();
+			if(cause != null) {
+				msg += tabs + "Cause:\n";
+				if(cause instanceof AllChainTransformationsFailedException)
+					msg += tabs + ((AllChainTransformationsFailedException)cause)
+							.getMessage(counter + 1) + "\n";
+				else
+					msg += tabs + cause.getMessage() + "\n";
+			}
+		}
+		return msg;
+	}
+
+	/** Returns @counter tabs in a string. */
+	private String addTabs(int counter) {
+		String msg = "";
+		for(int i = 0; i < counter; i++) {
+			msg += "\t";
+		}
+		return msg;
+	}
+
+	/** Returns exceptionList. */
+	public List<ChainTransformationFailedException> getExceptionList() {
+		return exceptionList;
+	}
+}