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Java example source code file (DatatypeException.java)

This example Java source code file (DatatypeException.java) is included in the alvinalexander.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Learn more about this Java project at its project page.

Java - Java tags/keywords

badmessagekey, datatypeexception, exception, formatfailed, missingresourceexception, object, property, resourcebundle, string, util

The DatatypeException.java Java example source code

/*
 * reserved comment block
 * DO NOT REMOVE OR ALTER!
 */
/*
 * Copyright 2001, 2002,2004 The Apache Software Foundation.
 *
 * 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.sun.org.apache.xerces.internal.impl.dv;

import com.sun.org.apache.xerces.internal.utils.SecuritySupport;
import java.util.ResourceBundle;
import java.util.PropertyResourceBundle;
import java.util.MissingResourceException;

/**
 * Base class for datatype exceptions. For DTD types, the exception can be
 * created from an error message. For Schema types, it needs an error code
 * (as defined in Appendix C of the structure spec), plus an array of arguents,
 * for error message substitution.
 *
 * @xerces.internal
 *
 * @author Sandy Gao, IBM
 *
 * @version $Id: DatatypeException.java,v 1.6 2010-11-01 04:39:43 joehw Exp $
 */
public class DatatypeException extends Exception {

    /** Serialization version. */
    static final long serialVersionUID = 1940805832730465578L;

    // used to store error code and error substitution arguments
    protected String key;
    protected Object[] args;

    /**
     * Create a new datatype exception by providing an error code and a list
     * of error message substitution arguments.
     *
     * @param key  error code
     * @param args error arguments
     */
    public DatatypeException(String key, Object[] args) {
        super(key);
        this.key = key;
        this.args = args;
    }

    /**
     * Return the error code
     *
     * @return  error code
     */
    public String getKey() {
        return key;
    }

    /**
     * Return the list of error arguments
     *
     * @return  error arguments
     */
    public Object[] getArgs() {
        return args;
    }

    /**
     * Overrides this method to get the formatted&localized error message.
     *
     * REVISIT: the system locale is used to load the property file.
     *          do we want to allow the appilcation to specify a
     *          different locale?
     */
    public String getMessage() {
        ResourceBundle resourceBundle = null;
        resourceBundle = SecuritySupport.getResourceBundle("com.sun.org.apache.xerces.internal.impl.msg.XMLSchemaMessages");
        if (resourceBundle == null)
            throw new MissingResourceException("Property file not found!", "com.sun.org.apache.xerces.internal.impl.msg.XMLSchemaMessages", key);

        String msg = resourceBundle.getString(key);
        if (msg == null) {
            msg = resourceBundle.getString("BadMessageKey");
            throw new MissingResourceException(msg, "com.sun.org.apache.xerces.internal.impl.msg.XMLSchemaMessages", key);
        }

        if (args != null) {
            try {
                msg = java.text.MessageFormat.format(msg, args);
            } catch (Exception e) {
                msg = resourceBundle.getString("FormatFailed");
                msg += " " + resourceBundle.getString(key);
            }
        }

        return msg;
    }
}

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