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Java example source code file (ValueListBeanInfoImpl.java)

This example Java source code file (ValueListBeanInfoImpl.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

accessorexception, charsequence, class, jaxbexception, loader, object, reflection, sax, saxexception, string, transducer, unmarshallingcontext, unsupportedoperationexception, util, valuelistbeaninfoimpl, xmlserializer, xmlstreamexception

The ValueListBeanInfoImpl.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.io.IOException;
import java.lang.reflect.Array;
import java.util.List;

import javax.xml.bind.JAXBException;
import javax.xml.bind.ValidationEvent;
import javax.xml.bind.helpers.ValidationEventImpl;
import javax.xml.stream.XMLStreamException;

import com.sun.istack.internal.FinalArrayList;
import com.sun.xml.internal.bind.WhiteSpaceProcessor;
import com.sun.xml.internal.bind.api.AccessorException;
import com.sun.xml.internal.bind.v2.runtime.unmarshaller.Loader;
import com.sun.xml.internal.bind.v2.runtime.unmarshaller.UnmarshallingContext;

import org.xml.sax.SAXException;

/**
 * {@link JaxBeanInfo} implementation that binds T[] to a list of simple types.
 *
 * @author Kohsuke Kawaguchi
 */
final class ValueListBeanInfoImpl extends JaxBeanInfo {

    private final Class itemType;
    private final Transducer xducer;    // for items

    public ValueListBeanInfoImpl(JAXBContextImpl owner, Class arrayType) throws JAXBException {
        super(owner, null, arrayType, false, true, false);
        this.itemType = jaxbType.getComponentType();
        this.xducer = owner.getBeanInfo(arrayType.getComponentType(),true).getTransducer();
        assert xducer!=null;
    }

    private final Loader loader = new Loader(true) {
        @Override
        public void text(UnmarshallingContext.State state, CharSequence text) throws SAXException {
            List<Object> r = new FinalArrayList();

            int idx = 0;
            int len = text.length();

            while(true) {
                int p = idx;
                while( p<len && !WhiteSpaceProcessor.isWhiteSpace(text.charAt(p)) )
                    p++;

                CharSequence token = text.subSequence(idx,p);
                if (!token.equals(""))
                    try {
                        r.add(xducer.parse(token));
                    } catch (AccessorException e) {
                        handleGenericException(e,true);
                        continue;   // move on to next
                    }

                if(p==len)      break;  // done

                while( p<len && WhiteSpaceProcessor.isWhiteSpace(text.charAt(p)) )
                    p++;
                if(p==len)      break;  // done

                idx = p;
            }

            state.target = toArray(r);
        }
    };

    private Object toArray( List list ) {
        int len = list.size();
        Object array = Array.newInstance(itemType,len);
        for( int i=0; i<len; i++ )
            Array.set(array,i,list.get(i));
        return array;
    }

    public void serializeBody(Object array, XMLSerializer target) throws SAXException, IOException, XMLStreamException {
        int len = Array.getLength(array);
        for( int i=0; i<len; i++ )  {
            Object item = Array.get(array,i);
            try {
                xducer.writeText(target,item,"arrayItem");
            } catch (AccessorException e) {
                target.reportError("arrayItem",e);
            }
        }
    }

    public final void serializeURIs(Object array, XMLSerializer target) throws SAXException {
        if(xducer.useNamespace()) {
            int len = Array.getLength(array);
            for( int i=0; i<len; i++ )  {
                Object item = Array.get(array,i);
                try {
                    xducer.declareNamespace(item,target);
                } catch (AccessorException e) {
                    target.reportError("arrayItem",e);
                }
            }
        }
    }

    public final String getElementNamespaceURI(Object array) {
        throw new UnsupportedOperationException();
    }

    public final String getElementLocalName(Object array) {
        throw new UnsupportedOperationException();
    }

    public final Object createInstance(UnmarshallingContext context) {
        throw new UnsupportedOperationException();
    }

    public final boolean reset(Object array, UnmarshallingContext context) {
        return false;
    }

    public final String getId(Object array, XMLSerializer target) {
        return null;
    }

    public final void serializeAttributes(Object array, XMLSerializer target) {
        // noop
    }

    public final void serializeRoot(Object array, XMLSerializer target) throws SAXException {
        target.reportError(
                new ValidationEventImpl(
                        ValidationEvent.ERROR,
                        Messages.UNABLE_TO_MARSHAL_NON_ELEMENT.format(array.getClass().getName()),
                        null,
                        null));
    }

    public final Transducer getTransducer() {
        return null;
    }

    public final Loader getLoader(JAXBContextImpl context, boolean typeSubstitutionCapable) {
        // type substitution impossible
        return loader;
    }
}




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