1/*
2 * Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.  Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25
26package com.sun.xml.internal.bind.v2.runtime;
27
28import java.io.IOException;
29
30import javax.xml.namespace.QName;
31import javax.xml.stream.XMLStreamException;
32
33import com.sun.istack.internal.NotNull;
34import com.sun.xml.internal.bind.api.AccessorException;
35
36import org.xml.sax.SAXException;
37
38/**
39 * {@link Transducer} that delegates to another {@link Transducer}.
40 *
41 * @author Kohsuke Kawaguchi
42 */
43public abstract class FilterTransducer<T> implements Transducer<T> {
44    protected final Transducer<T> core;
45
46    protected FilterTransducer(Transducer<T> core) {
47        this.core = core;
48    }
49
50    public final boolean isDefault() {
51        // this must be used as a decorating transducer,
52        // so it may never be default.
53        return false;
54    }
55
56    public boolean useNamespace() {
57        return core.useNamespace();
58    }
59
60    public void declareNamespace(T o, XMLSerializer w) throws AccessorException {
61        core.declareNamespace(o, w);
62    }
63
64    public @NotNull CharSequence print(@NotNull T o) throws AccessorException {
65        return core.print(o);
66    }
67
68    public T parse(CharSequence lexical) throws AccessorException, SAXException {
69        return core.parse(lexical);
70    }
71
72    public void writeText(XMLSerializer w, T o, String fieldName) throws IOException, SAXException, XMLStreamException, AccessorException {
73        core.writeText(w, o, fieldName);
74    }
75
76    public void writeLeafElement(XMLSerializer w, Name tagName, T o, String fieldName) throws IOException, SAXException, XMLStreamException, AccessorException {
77        core.writeLeafElement(w,tagName,o,fieldName);
78    }
79
80    public QName getTypeName(T instance) {
81        return null;
82    }
83}
84