1/*
2 * Copyright (c) 2005, 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.txw2;
27
28import java.util.AbstractList;
29import java.util.Collections;
30import java.util.List;
31import javax.xml.namespace.QName;
32
33/**
34 * Pluggable datatype writer.
35 *
36 * @author Kohsuke Kawaguchi
37 */
38public interface DatatypeWriter<DT> {
39
40    /**
41     * Gets the Java class that this writer can write.
42     *
43     * @return
44     *      must not be null. Must be the same value always.
45     */
46    Class<DT> getType();
47
48    /**
49     * Prints the given datatype object and appends that result
50     * into the given buffer.
51     *
52     * @param dt
53     *      the datatype object to be printed.
54     * @param resolver
55     *      allows the converter to declare additional namespace prefixes.
56     */
57    void print(DT dt, NamespaceResolver resolver, StringBuilder buf);
58
59    static final List<DatatypeWriter<?>> BUILTIN = Collections.unmodifiableList(new AbstractList() {
60
61        private DatatypeWriter<?>[] BUILTIN_ARRAY = new DatatypeWriter<?>[] {
62            new DatatypeWriter<String>() {
63                public Class<String> getType() {
64                    return String.class;
65                }
66                public void print(String s, NamespaceResolver resolver, StringBuilder buf) {
67                    buf.append(s);
68                }
69            },
70            new DatatypeWriter<Integer>() {
71                public Class<Integer> getType() {
72                    return Integer.class;
73                }
74                public void print(Integer i, NamespaceResolver resolver, StringBuilder buf) {
75                    buf.append(i);
76                }
77            },
78            new DatatypeWriter<Float>() {
79                public Class<Float> getType() {
80                    return Float.class;
81                }
82                public void print(Float f, NamespaceResolver resolver, StringBuilder buf) {
83                    buf.append(f);
84                }
85            },
86            new DatatypeWriter<Double>() {
87                public Class<Double> getType() {
88                    return Double.class;
89                }
90                public void print(Double d, NamespaceResolver resolver, StringBuilder buf) {
91                    buf.append(d);
92                }
93            },
94            new DatatypeWriter<QName>() {
95                public Class<QName> getType() {
96                    return QName.class;
97                }
98                public void print(QName qn, NamespaceResolver resolver, StringBuilder buf) {
99                    String p = resolver.getPrefix(qn.getNamespaceURI());
100                    if(p.length()!=0)
101                        buf.append(p).append(':');
102                    buf.append(qn.getLocalPart());
103                }
104            }
105        };
106
107        public DatatypeWriter<?> get(int n) {
108          return BUILTIN_ARRAY[n];
109        }
110
111        public int size() {
112          return BUILTIN_ARRAY.length;
113        }
114      });
115}
116