domexceptionimpl.java

用Java写的面相对象的数据库管理系统

/**
 * org/ozone-db/xml/dom/DOMExceptionImpl.java
 *
 * The contents of this file are subject to the OpenXML Public
 * License Version 1.0; you may not use this file except in compliance
 * with the License. You may obtain a copy of the License at
 * http://www.openxml.org/license.html
 *
 * THIS SOFTWARE IS DISTRIBUTED ON AN "AS IS" BASIS WITHOUT WARRANTY
 * OF ANY KIND, EITHER EXPRESSED OR IMPLIED. THE INITIAL DEVELOPER
 * AND ALL CONTRIBUTORS SHALL NOT BE LIABLE FOR ANY DAMAGES AS A
 * RESULT OF USING, MODIFYING OR DISTRIBUTING THIS SOFTWARE OR ITS
 * DERIVATIVES. SEE THE LICENSE FOR THE SPECIFIC LANGUAGE GOVERNING
 * RIGHTS AND LIMITATIONS UNDER THE LICENSE.
 *
 * The Initial Developer of this code under the License is Assaf Arkin.
 * Portions created by Assaf Arkin are Copyright (C) 1998, 1999.
 * All Rights Reserved.
 */

/**
 * Changes for Persistent DOM running with ozone are
 * Copyright 1999 by SMB GmbH. All rights reserved.
 */

package org.ozoneDB.xml.dom;

import org.w3c.dom.*;


/**
 * Implements {@link org.w3c.dom.DOMException} for throwing a {@link
 * java.lang.RuntimeException}. Message specified as one of several predefined
 * error codes plus an optional description string. {@link #getMessage} returns
 * textual description of error code.
 * <P>
 * See {@link org.w3c.dom.DOMException} for list of supported error codes.
 *
 *
 * @version $Revision: 1.8 $ $Date: 2000/10/28 16:55:23 $
 * @author <a href="mailto:[e-mail]">Assaf Arkin</a>
 * @see org.w3c.dom.DOMException
 */
public final class DOMExceptionImpl extends DOMException {
    
    public final static short PDOM_ERR = 11;
    
    
    /**
     * Create new {@link org.w3c.dom.DOMException} with specified code.
     * Message will contain textual description of code.
     *
     * @param code {@link org.w3c.dom.DOMException} error code
     */
    public DOMExceptionImpl( short code ) {
        this( code, null );
    }
    
    
    /**
     * Create new {@link org.w3c.dom.DOMException} with specified code and message. Message will contain
     * textual description of code and optional message text.
     *
     * @param code {@link org.w3c.dom.DOMException} error code
     * @param message Optional message text
     */
    public DOMExceptionImpl( short code, String message ) {
        super( code, makeMessage( code, message ) );
    }
    
    
    public String toString() {
        return "DOMException(" + super.code + "): " + getMessage();
    } 
    
    
    /**
     * Construct message based on textual description of message code and message
     * text. Static method is used by constructor.
     * 
     * 
     * @param code {@link org.w3c.dom.DOMException} error code
     * @param message Optional message text
     * @return Description of error code containing optional message text
     */
    private static String makeMessage( short code, String message ) {
        String codeText;
        
        switch (code) {
        case INDEX_SIZE_ERR:
            codeText = "Index or size is negative or greater than the allowed value.";
            break;
        case HIERARCHY_REQUEST_ERR:
            codeText = "Node is inserted somewhere it doesn't belong.";
            break;
        case WRONG_DOCUMENT_ERR:
            codeText = "Node is used in a different document than the one that created it.";
            break;
        case INVALID_CHARACTER_ERR:
            codeText = "An invalid character is specified, such as in a name.";
            break;
        case NO_DATA_ALLOWED_ERR:
            codeText = "Node does not support data.";
            break;
        case NO_MODIFICATION_ALLOWED_ERR:
            codeText = "Attempt made to modify an pbject where modification not allowed.";
            break;
        case NOT_FOUND_ERR:
            codeText = "Attempt to reference a node in a context where it does not exist.";
            break;
        case NOT_SUPPORTED_ERR:
            codeText = "Implementation does not support the type of object requested.";
            break;
        case INUSE_ATTRIBUTE_ERR:
            codeText = "An attempt to add an attribute that is already inuse elsewhere.";
            break;
        default:
            codeText = "Exception reason is unspecified.";
            break;
        }
        codeText = "DOMException: " + codeText + " (code " + code + ")";
        if (message != null && message.length() > 0) {
            codeText = codeText + "\n" + message;
        } 
        return codeText;
    } 
    
}