org.csc.phynixx.common.exceptions.DelegatedRuntimeException Maven / Gradle / Ivy

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package org.csc.phynixx.common.exceptions;

/*
 * #%L
 * phynixx-common
 * %%
 * Copyright (C) 2014 csc
 * %%
 * 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.
 * #L%
 */


import java.io.PrintStream;
import java.io.PrintWriter;

public class DelegatedRuntimeException extends RuntimeException implements IDelegated {


    /**
	 * 
	 */
	private static final long serialVersionUID = -6810821866775772493L;

	public DelegatedRuntimeException() {
        super();
    }

    public DelegatedRuntimeException(String message, Throwable cause) {
        super(message, cause);
    }

    public DelegatedRuntimeException(String message) {
        super(message);
    }

    public DelegatedRuntimeException(Throwable cause) {
        super(cause);
    }

    /**
     * liefert die delegierte/ausloesende Exception.
     * Falls die Delegation rekursiv ist (d.h. die deklegierte Exception ist wiederrum eine
     * delegation), so wird die delegation bis zur ersten Exception ausfgeloest, die nicht das IF IDelegated implementiert.
     *
     * @return the root cause exception.
     */
    public Throwable getRootCause() {
        Throwable throwable = super.getCause();

        if (throwable instanceof IDelegated) {
            return ((IDelegated) throwable).getRootCause();
        }
        if (throwable == null) {
            return new Exception("");
        } else {
            return throwable;
        }
    }

    /**
     * liefert den Decorierenden Inhalt.
     */
    public String getDecoratingMessage() {
        String decoratingMessage = super.getMessage();
        if (decoratingMessage == null) {
            return "";
        } else {
            return decoratingMessage;
        }
    }


    /**
     * Liefert Message
     *
     * @return String
     */
    public String getMessage() {
        String message = super.getMessage();
        if (this.getCause() != null) {
            return message + " :: " + this.getCause().getMessage();
        } else {
            return super.getMessage() + " DelegatedSystemExeption :: No RootCause defined";
        }
    }


    /**
     * Die aktuelle Verarbeitung ermittelt die ausloesende Exception und liefert deren StackTrace
     * Eine Iteration ueber die einzelnen Stacktraces muss ggfs selbst mit Hilfe der Methode
     * getCause() implementiert werden.
     *
     * @param stream PrintStream
     */
    public void printStackTrace(PrintStream stream) {
        if (getRootCause() != null) {
            stream.println(this.getMessage());
            getRootCause().printStackTrace(stream);
        } else {
            this.printStackTrace(stream);
        }
    }

    /**
     * Die aktuelle Verarbeitung verweistan die Ausfuehrung der delegierte Excetion
     * Eine Iteration ueber die einzelnen Stacktraces muss ggfs selbst mit Hilfe der Methode
     * getCause() implementiert werden.
     *
     * @param writer PrintWriter
     */
    public void printStackTrace(PrintWriter writer) {
        if (getRootCause() != null) {
            writer.write(getMessage());
            getRootCause().printStackTrace(writer);
        } else {
            this.printStackTrace(writer);
        }
    }


}