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 *  distributed with this work for additional information
 *  regarding copyright ownership.  The ASF licenses this file
 *  to you under the Apache License, Version 2.0 (the
 *  "License"); you may not use this file except in compliance
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 *
 *    http://www.apache.org/licenses/LICENSE-2.0
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package org.apache.cayenne;

/**
 * An exception thrown during an attempt to delete an object that has a relationship to a
 * non-null related object, that has a DENY delete rule.
 * 
 * @since 1.2
 * @author Andrus Adamchik
 */
public class DeleteDenyException extends CayenneRuntimeException {

    protected Persistent object;
    protected String relationship;

    public DeleteDenyException() {
    }

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

    /**
     * @since 1.2
     */
    public DeleteDenyException(Persistent object, String relationship, String reason) {
        super(reason);

        this.object = object;
        this.relationship = relationship;
    }

    /**
     * @since 1.2
     */
    public Persistent getObject() {
        return object;
    }

    /**
     * @since 1.2
     */
    public String getRelationship() {
        return relationship;
    }

    public String getMessage() {
        StringBuffer buffer = new StringBuffer();
        buffer.append("Can't delete object");

        if (object != null && object.getObjectId() != null) {
            buffer.append(" with OID ").append(object.getObjectId());
        }

        if (relationship != null) {
            buffer.append(". Reason: relationship '").append(relationship).append(
                    "' has 'deny' delete rule");
        }

        String message = super.getUnlabeledMessage();
        if (message != null) {
            buffer.append(". Details: ").append(message);
        }

        return buffer.toString();
    }
}




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