/*******************************************************************************
* Copyright 2013 SAP AG
*
* 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 com.sap.core.odata.api.exception;
/**
* <p>DO NOT EXTEND THIS EXCEPTION</p>
* APPLICATION DEVELOPERS: please use {@link ODataApplicationException} o throw custom exceptions.
* <p>Base exception class for all exceptions in the <code>OData</code> library.
* This class extends {@link ODataException} with a message that will be displayed
* to a possible client and therefore needs support for internationalization.
* <br>To support internationalization and translation of messages, this class
* and its sub classes contain a {@link MessageReference} object which can be
* mapped to a related key and message text in the resource bundles.
* @author SAP AG
*/
public abstract class ODataMessageException extends ODataException {
private static final long serialVersionUID = 42L;
/** Message reference for exception which is used for internationalization */
protected final MessageReference messageReference;
/** OData error code */
protected final String errorCode;
/** Reference to common message for a {@link ODataMessageException} */
public static final MessageReference COMMON = createMessageReference(ODataMessageException.class, "COMMON");
/**
* Creates {@link ODataMessageException} with given {@link MessageReference}.
* @param messageReference references the message text (and additional values)
* of this {@link ODataMessageException}
*/
public ODataMessageException(final MessageReference messageReference) {
this(messageReference, null, null);
}
/**
* Creates {@link ODataMessageException} with given {@link MessageReference}
* and cause {@link Throwable} which caused this exception.
* @param messageReference references the message text (and additional values)
* of this {@link ODataMessageException}
* @param cause exception which caused this exception
*/
public ODataMessageException(final MessageReference messageReference, final Throwable cause) {
this(messageReference, cause, null);
}
/**
* Creates {@link ODataMessageException} with given {@link MessageReference},
* cause {@link Throwable} and error code.
* @param messageReference references the message text (and additional values)
* of this {@link ODataMessageException}
* @param cause exception which caused this exception
* @param errorCode a String with a unique code identifying this exception
*/
public ODataMessageException(final MessageReference messageReference, final Throwable cause, final String errorCode) {
super(cause);
this.messageReference = messageReference;
this.errorCode = errorCode;
}
/**
* Creates {@link ODataMessageException} with given {@link MessageReference} and error code.
* @param messageReference references the message text (and additional values)
* of this {@link ODataMessageException}
* @param errorCode a String with a unique code identifying this exception
*/
public ODataMessageException(final MessageReference messageReference, final String errorCode) {
this(messageReference, null, errorCode);
}
/**
* Creates {@link MessageReference} objects more conveniently.
* @param clazz exception class for message reference
* @param messageReferenceKey unique (in exception class) key for message reference
* @return created message-reference instance
*/
protected static final MessageReference createMessageReference(final Class<? extends ODataMessageException> clazz, final String messageReferenceKey) {
return MessageReference.create(clazz, messageReferenceKey);
}
/**
* Gets the related {@link MessageReference}.
* @return the message reference
*/
public MessageReference getMessageReference() {
return messageReference;
}
/**
* Gets the error code for this {@link ODataMessageException}.
* Default is <code>null</code>.
* @return the error code
*/
public String getErrorCode() {
return errorCode;
}
}