com.sun.xml.bind.v2.runtime.reflect.ListTransducedAccessorImpl Maven / Gradle / Ivy

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/*
 * Copyright (c) 1997, 2018 Oracle and/or its affiliates. All rights reserved.
 *
 * This program and the accompanying materials are made available under the
 * terms of the Eclipse Distribution License v. 1.0, which is available at
 * http://www.eclipse.org/org/documents/edl-v10.php.
 *
 * SPDX-License-Identifier: BSD-3-Clause
 */

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

import javax.xml.bind.JAXBException;

import com.sun.xml.bind.WhiteSpaceProcessor;
import com.sun.xml.bind.api.AccessorException;
import com.sun.xml.bind.v2.runtime.Transducer;
import com.sun.xml.bind.v2.runtime.XMLSerializer;

import org.xml.sax.SAXException;

/**
 * {@link TransducedAccessor} for a list simple type.
 *
 * @author Kohsuke Kawaguchi
 */
public final class ListTransducedAccessorImpl extends DefaultTransducedAccessor {
    /**
     * {@link Transducer} for each item type.
     */
    private final Transducer xducer;
    /**
     * {@link Lister} for handling list of tokens.
     */
    private final Lister lister;
    /**
     * {@link Accessor} to get/set the list. 
     */
    private final Accessor acc;

    public ListTransducedAccessorImpl(Transducer xducer, Accessor acc, Lister lister) {
        this.xducer = xducer;
        this.lister = lister;
        this.acc = acc;
    }

    public boolean useNamespace() {
        return xducer.useNamespace();
    }

    public void declareNamespace(BeanT bean, XMLSerializer w) throws AccessorException, SAXException {
        ListT list = acc.get(bean);

        if(list!=null) {
           ListIterator itr = lister.iterator(list, w);

            while(itr.hasNext()) {
                try {
                    ItemT item = itr.next();
                    if (item != null) {
                        xducer.declareNamespace(item,w);
                    }
                } catch (JAXBException e) {
                    w.reportError(null,e);
                }
            }
        }
    }

    // TODO: this is inefficient, consider a redesign
    // perhaps we should directly write to XMLSerializer,
    // or maybe add more methods like writeLeafElement.
    public String print(BeanT o) throws AccessorException, SAXException {
        ListT list = acc.get(o);

        if(list==null)
            return null;

        StringBuilder buf = new StringBuilder();
        XMLSerializer w = XMLSerializer.getInstance();
        ListIterator itr = lister.iterator(list, w);

        while(itr.hasNext()) {
            try {
                ItemT item = itr.next();
                if (item != null) {
                    if(buf.length()>0)  buf.append(' ');
                    buf.append(xducer.print(item));
                }
            } catch (JAXBException e) {
                w.reportError(null,e);
            }
        }
        return buf.toString();
    }

    private void processValue(BeanT bean, CharSequence s) throws AccessorException, SAXException {
        PackT pack = lister.startPacking(bean,acc);

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

        while(true) {
            int p = idx;
            while( p