1/*
2 * Copyright (c) 1997, 2015, 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.tools.internal.jxc.ap;
27
28import com.sun.tools.internal.jxc.api.JXC;
29import com.sun.tools.internal.xjc.api.J2SJAXBModel;
30import com.sun.tools.internal.xjc.api.Reference;
31
32import javax.annotation.processing.AbstractProcessor;
33import javax.annotation.processing.Processor;
34import javax.annotation.processing.RoundEnvironment;
35import javax.annotation.processing.SupportedAnnotationTypes;
36import javax.lang.model.SourceVersion;
37import javax.lang.model.element.Element;
38import javax.lang.model.element.ElementKind;
39import javax.lang.model.element.TypeElement;
40import javax.lang.model.util.ElementFilter;
41import javax.tools.Diagnostic;
42import javax.tools.StandardLocation;
43import javax.xml.bind.SchemaOutputResolver;
44import javax.xml.namespace.QName;
45import javax.xml.transform.Result;
46import javax.xml.transform.stream.StreamResult;
47import java.io.File;
48import java.io.FileOutputStream;
49import java.io.IOException;
50import java.io.OutputStream;
51import java.util.ArrayList;
52import java.util.Collection;
53import java.util.Collections;
54import java.util.HashMap;
55import java.util.List;
56import java.util.Map;
57import java.util.Set;
58
59/**
60 * {@link Processor} that implements the schema generator
61 * command line tool.
62 *
63 * @author Kohsuke Kawaguchi
64 */
65@SupportedAnnotationTypes("*")
66public class SchemaGenerator extends AbstractProcessor {
67
68    /**
69     * User-specified schema locations, if any.
70     */
71    private final Map<String,File> schemaLocations = new HashMap<String, File>();
72
73    private File episodeFile;
74
75    public SchemaGenerator() {
76    }
77
78    public SchemaGenerator( Map<String,File> m ) {
79        schemaLocations.putAll(m);
80    }
81
82    public void setEpisodeFile(File episodeFile) {
83        this.episodeFile = episodeFile;
84    }
85
86    @Override
87    public boolean process(Set<? extends TypeElement> annotations, RoundEnvironment roundEnv) {
88        final ErrorReceiverImpl errorListener = new ErrorReceiverImpl(processingEnv);
89
90        List<Reference> classesToBeBound = new ArrayList<Reference>();
91        // simply ignore all the interface definitions,
92        // so that users won't have to manually exclude interfaces, which is silly.
93        filterClass(classesToBeBound, roundEnv.getRootElements());
94
95        J2SJAXBModel model = JXC.createJavaCompiler().bind(classesToBeBound, Collections.<QName, Reference>emptyMap(), null, processingEnv);
96        if (model == null)
97            return false; // error
98
99        try {
100            model.generateSchema(
101                    new SchemaOutputResolver() {
102                        public Result createOutput(String namespaceUri, String suggestedFileName) throws IOException {
103                            File file;
104                            OutputStream out;
105                            if (schemaLocations.containsKey(namespaceUri)) {
106                                file = schemaLocations.get(namespaceUri);
107                                if (file == null) return null;    // don't generate
108                                out = new FileOutputStream(file);
109                            } else {
110                                // use the default
111                                file = new File(suggestedFileName);
112                                out = processingEnv.getFiler().createResource(StandardLocation.CLASS_OUTPUT, "", suggestedFileName)
113                                        .openOutputStream();
114                                file = file.getAbsoluteFile();
115                            }
116
117                            StreamResult ss = new StreamResult(out);
118                            processingEnv.getMessager().printMessage(Diagnostic.Kind.NOTE, "Writing "+file);
119                            ss.setSystemId(file.toURL().toExternalForm());
120                            return ss;
121                        }
122                    }, errorListener);
123
124            if (episodeFile != null) {
125                processingEnv.getMessager().printMessage(Diagnostic.Kind.NOTE, "Writing "+episodeFile);
126                model.generateEpisodeFile(new StreamResult(episodeFile));
127            }
128        } catch (IOException e) {
129            errorListener.error(e.getMessage(), e);
130        }
131        return false;
132    }
133
134    /**
135     * Filter classes (note that enum is kind of class) from elements tree
136     * @param result list of found classes
137     * @param elements tree to be filtered
138     */
139    private void filterClass(List<Reference> result, Collection<? extends Element> elements) {
140        for (Element element : elements) {
141            final ElementKind kind = element.getKind();
142            if (ElementKind.CLASS.equals(kind) || ElementKind.ENUM.equals(kind)) {
143                result.add(new Reference((TypeElement) element, processingEnv));
144                filterClass(result, ElementFilter.typesIn(element.getEnclosedElements()));
145            }
146        }
147    }
148
149    @Override
150    public SourceVersion getSupportedSourceVersion() {
151        if (SourceVersion.latest().compareTo(SourceVersion.RELEASE_6) > 0)
152            return SourceVersion.valueOf("RELEASE_7");
153        else
154            return SourceVersion.RELEASE_6;
155    }
156}
157