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Java example source code file (RuntimeUtil.java)

This example Java source code file (RuntimeUtil.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

hashmap, map, object, runtimeutil, string, tostringadapter, unsupportedoperationexception, util, xmladapter

The RuntimeUtil.java Java example source code

/*
 * Copyright (c) 1997, 2011, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.  Oracle designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Oracle in the LICENSE file that accompanied this code.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 * or visit www.oracle.com if you need additional information or have any
 * questions.
 */

package com.sun.xml.internal.bind.v2.runtime;

import java.util.Collections;
import java.util.HashMap;
import java.util.Map;

import javax.xml.bind.annotation.adapters.XmlAdapter;

/**
 * @author Kohsuke Kawaguchi
 */
public class RuntimeUtil {
    /**
     * XmlAdapter for printing arbitrary object by using {@link Object#toString()}.
     */
    public static final class ToStringAdapter extends XmlAdapter<String,Object> {
        public Object unmarshal(String s) {
            throw new UnsupportedOperationException();
        }

        public String marshal(Object o) {
            if(o==null)     return null;
            return o.toString();
        }
    }

    /**
     * Map from {@link Class} objects representing primitive types
     * to {@link Class} objects representing their boxed types.
     * <p>
     * e.g., int -> Integer.
     */
    public static final Map<Class,Class> boxToPrimitive;

    /**
     * Reverse map of {@link #boxToPrimitive}.
     */
    public static final Map<Class,Class> primitiveToBox;

    static {
        Map<Class,Class> b = new HashMap();
        b.put(Byte.TYPE,Byte.class);
        b.put(Short.TYPE,Short.class);
        b.put(Integer.TYPE,Integer.class);
        b.put(Long.TYPE,Long.class);
        b.put(Character.TYPE,Character.class);
        b.put(Boolean.TYPE,Boolean.class);
        b.put(Float.TYPE,Float.class);
        b.put(Double.TYPE,Double.class);
        b.put(Void.TYPE,Void.class);

        primitiveToBox = Collections.unmodifiableMap(b);

        Map<Class,Class> p = new HashMap();
        for( Map.Entry<Class,Class> e :  b.entrySet() )
            p.put(e.getValue(),e.getKey());

        boxToPrimitive = Collections.unmodifiableMap(p);
    }

    /**
     * Reports a print conversion error while marshalling.
     */
/*
    public static void handlePrintConversionException(
        Object caller, Exception e, XMLSerializer serializer ) throws SAXException {

        if( e instanceof SAXException )
            // assume this exception is not from application.
            // (e.g., when a marshaller aborts the processing, this exception
            //        will be thrown)
            throw (SAXException)e;

        ValidationEvent ve = new PrintConversionEventImpl(
            ValidationEvent.ERROR, e.getMessage(),
            new ValidationEventLocatorImpl(caller), e );
        serializer.reportError(ve);
    }
*/

    /**
     * Reports that the type of an object in a property is unexpected.
     */
/*
    public static void handleTypeMismatchError( XMLSerializer serializer,
            Object parentObject, String fieldName, Object childObject ) throws SAXException {

         ValidationEvent ve = new ValidationEventImpl(
            ValidationEvent.ERROR, // maybe it should be a fatal error.
             Messages.TYPE_MISMATCH.format(
                getTypeName(parentObject),
                fieldName,
                getTypeName(childObject) ),
            new ValidationEventLocatorExImpl(parentObject,fieldName) );

        serializer.reportError(ve);
    }
*/

    private static String getTypeName( Object o ) {
        return o.getClass().getName();
    }
}

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