/src/mpv5/handler/SDBObjectGenerator.java

 1/*
 2 *  This file is part of YaBS.
 3 *
 4 *      YaBS is free software: you can redistribute it and/or modify
 5 *      it under the terms of the GNU General Public License as published by
 6 *      the Free Software Foundation, either version 3 of the License, or
 7 *      (at your option) any later version.
 8 *
 9 *      YaBS is distributed in the hope that it will be useful,
10 *      but WITHOUT ANY WARRANTY; without even the implied warranty of
11 *      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
12 *      GNU General Public License for more details.
13 *
14 *      You should have received a copy of the GNU General Public License
15 *      along with YaBS.  If not, see <http://www.gnu.org/licenses/>.
16 */
17package mpv5.handler;
18
19import java.lang.reflect.Method;
20import java.util.ArrayList;
21import java.util.List;
22import mpv5.compiler.RuntimeCompiler;
23import mpv5.db.common.Context;
24import mpv5.db.common.DatabaseObject;
25import mpv5.logging.Log;
26
27/**
28 * This class generates simplified Beans from DatabaseObjects which do only contain their getter/setter Methods
29 */
30public abstract class SDBObjectGenerator {
31
32
33    /**
34     * Create an SimpleObject
35     * @param dos
36     * @param packagename
37     * @return
38     */
39    public static SimpleDatabaseObject getObjectFrom(DatabaseObject dos, String packagename) {
40
41        ArrayList<Method> methods = new ArrayList<Method>(dos.setVars().values());
42
43        String classTemplate =
44                "package " + packagename + ";\n" +
45                "import mpv5.db.common.Context;\n" +
46                "import mpv5.db.common.DatabaseObject;\n" +
47                "import mpv5.utils.images.MPIcon;\n" +
48                "import java.util.Date;\n" +
49                "\n" +
50                "\n" +
51                "public final class " + dos.getDbIdentity() + " implements mpv5.handler.SimpleDatabaseObject{\n\n";
52
53        for (int i = 0; i < methods.size(); i++) {
54            Method method = methods.get(i);
55            classTemplate +=
56                    "private " + method.getParameterTypes()[0].getCanonicalName() + "  " + method.getName().substring(3).toLowerCase() + ";\n" +
57                    "public " + method.getParameterTypes()[0].getCanonicalName() + "  get" + method.getName().substring(3) + "(){\n" +
58                    "return " + "this." + method.getName().substring(3).toLowerCase() + ";\n" +
59                    "}\n" +
60                    "public boolean " + method.getName().toString() + "(" + method.getParameterTypes()[0].getCanonicalName() + " arg){\n" +
61                    "this." + method.getName().substring(3).toLowerCase() + " = arg;\n" +
62                    "return true;\n" +
63                    "}" +
64                    "\n\n";
65        }
66
67        classTemplate += "" +
68                "public boolean persist() throws Exception {" +
69                "return DatabaseObject.parse(this).saveImport();" +
70                "}" +
71
72                "" +
73                "public boolean fetch(int id) throws Exception {" +
74                "DatabaseObject.getObject(Context.getMatchingContext(getContext()), id).inject(this);" +
75                "return true;" +
76                "}" +
77
78                "" +
79                "public boolean fetch(String cname) throws Exception {" +
80                "DatabaseObject.getObject(Context.getMatchingContext(getContext()), cname).inject(this);" +
81                "return true;" +
82                "}" +
83
84                "" +
85                "public String getContext(){" +
86                "return getClass().getSimpleName();" +
87                "}" +
88
89                "}\n";
90        try {
91            return (SimpleDatabaseObject) RuntimeCompiler.getObjectFor(RuntimeCompiler.getClassFor(dos.getDbIdentity(), classTemplate, packagename));
92        } catch (Exception ex) {
93            Log.Debug(ex);
94            return null;
95        }
96    }
97}