Source Code Cross Referenced for ClassInfo.java in  » Swing-Library » Hitch » com » silvermindsoftware » hitch » reflect » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Swing Library » Hitch » com.silvermindsoftware.hitch.reflect 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        package com.silvermindsoftware.hitch.reflect;
002:
003:        import java.lang.reflect.Field;
004:        import java.lang.reflect.Method;
005:        import java.util.ArrayList;
006:        import java.util.List;
007:
008:        /**
009:         * Copyright 2007 Brandon Goodin
010:         * <p/>
011:         * Licensed under the Apache License, Version 2.0 (the "License");
012:         * you may not use this file except in compliance with the License.
013:         * You may obtain a copy of the License at
014:         * <p/>
015:         * http://www.apache.org/licenses/LICENSE-2.0
016:         * <p/>
017:         * Unless required by applicable law or agreed to in writing, software
018:         * distributed under the License is distributed on an "AS IS" BASIS,
019:         * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
020:         * See the License for the specific language governing permissions and
021:         * limitations under the License.
022:         */
023:
024:        public class ClassInfo {
025:
026:            /* Class Hierarchy */
027:            public List<Class> classList = new ArrayList<Class>();
028:
029:            /* Fields */
030:            Field[] fields;
031:
032:            /* Methods */
033:            Method[] getters;
034:            Method[] setters;
035:            Method[] methods;
036:
037:            public ClassInfo(Class clazz) {
038:                collectInfo(clazz);
039:            }
040:
041:            private void collectInfo(Class clazz) {
042:                classList.add(clazz);
043:                getSuperClass(clazz);
044:                collectFields();
045:                collectMethods();
046:            }
047:
048:            private void collectFields() {
049:
050:                List<FieldInfo> fieldInfoList = new ArrayList<FieldInfo>();
051:                List<Field> fieldList = new ArrayList<Field>();
052:
053:                for (Class clazz : classList) {
054:                    for (Field field : clazz.getDeclaredFields()) {
055:                        FieldInfo fieldInfo = new FieldInfo(field);
056:                        if (!fieldInfoList.contains(fieldInfo)) {
057:                            fieldInfoList.add(fieldInfo);
058:                            fieldList.add(fieldInfo.getField());
059:                        }
060:                    }
061:                }
062:
063:                fields = fieldList.toArray(new Field[] {});
064:
065:            }
066:
067:            private void collectMethods() {
068:
069:                List<MethodInfo> setterInfoList = new ArrayList<MethodInfo>();
070:                List<MethodInfo> getterInfoList = new ArrayList<MethodInfo>();
071:                List<MethodInfo> methodsInfoList = new ArrayList<MethodInfo>();
072:
073:                List<Method> setterList = new ArrayList<Method>();
074:                List<Method> getterList = new ArrayList<Method>();
075:                List<Method> methodList = new ArrayList<Method>();
076:
077:                for (Class clazz : classList) {
078:                    for (Method method : clazz.getDeclaredMethods()) {
079:                        if (method.getName().startsWith("set")) {
080:                            MethodInfo methodInfo = new MethodInfo(method);
081:                            if (!setterInfoList.contains(methodInfo)) {
082:                                setterInfoList.add(methodInfo);
083:                                setterList.add(methodInfo.getMethod());
084:                            }
085:                        } else if ((method.getName().startsWith("get") || method
086:                                .getName().startsWith("is"))
087:                                && !method.getName().equals("getClass")
088:                                && !method.getName().equals("get")) {
089:                            MethodInfo methodInfo = new MethodInfo(method);
090:                            if (!getterInfoList.contains(methodInfo)) {
091:                                getterInfoList.add(methodInfo);
092:                                getterList.add(methodInfo.getMethod());
093:                            }
094:                        } else {
095:                            MethodInfo methodInfo = new MethodInfo(method);
096:                            if (!methodsInfoList.contains(methodInfo)) {
097:                                methodsInfoList.add(methodInfo);
098:                                methodList.add(methodInfo.getMethod());
099:                            }
100:                        }
101:                    }
102:                }
103:
104:                getters = getterList.toArray(new Method[] {});
105:                setters = setterList.toArray(new Method[] {});
106:                methods = methodList.toArray(new Method[] {});
107:
108:            }
109:
110:            private void getSuperClass(Class clazz) {
111:                Class super Clazz = clazz.getSuperclass();
112:                if (super Clazz != null) {
113:                    classList.add(super Clazz);
114:                    getSuperClass(super Clazz);
115:                }
116:            }
117:
118:            private static boolean arrayContentsEq(Object[] a1, Object[] a2) {
119:                if (a1 == null) {
120:                    return a2 == null || a2.length == 0;
121:                }
122:
123:                if (a2 == null) {
124:                    return a1.length == 0;
125:                }
126:
127:                if (a1.length != a2.length) {
128:                    return false;
129:                }
130:
131:                for (int i = 0; i < a1.length; i++) {
132:                    if (a1[i] != a2[i]) {
133:                        return false;
134:                    }
135:                }
136:
137:                return true;
138:            }
139:
140:            /**
141:             * Retrieves a single field (public, private, protected or package) from the provided class
142:             * or one of its superclasses. The lowest subclass field is collected when there is a duplicate.
143:             * A duplicate is defined as having the same field name and type.
144:             *
145:             * @return
146:             */
147:            public Field getField(String name) throws NoSuchFieldException {
148:
149:                if (name == null || name.trim().equals("")) {
150:                    throw new IllegalArgumentException(
151:                            "Name cannot be null or empty");
152:                }
153:                ;
154:
155:                Field retField = null;
156:
157:                for (Field field : fields) {
158:                    if (field.getName().equals(name)) {
159:                        retField = field;
160:                        break;
161:                    }
162:                }
163:
164:                if (retField == null) {
165:                    throw new NoSuchFieldException(
166:                            "No method found for method named " + name);
167:                }
168:
169:                return retField;
170:            }
171:
172:            /**
173:             * Retrieves a single getter method (public, private, protected or package) from the provided class
174:             * or one of its superclasses. The lowest subclass method is collected when there is a duplicate.
175:             * A duplicate is defined as having the same method name and parameter types.
176:             *
177:             * @return
178:             */
179:            public Method getSetterMethod(String name, Class[] parameterTypes)
180:                    throws NoSuchMethodException {
181:                if (name == null || name.trim().equals(""))
182:                    throw new IllegalArgumentException(
183:                            "Name cannot be null or empty");
184:
185:                Method retSetter = null;
186:
187:                for (Method setter : setters) {
188:                    if (setter.getName().equals(name)
189:                            && arrayContentsEq(parameterTypes, setter
190:                                    .getParameterTypes())) {
191:                        retSetter = setter;
192:                        break;
193:                    }
194:                }
195:
196:                if (retSetter == null)
197:                    throw new NoSuchMethodException(
198:                            "No method found for method named " + name);
199:
200:                return retSetter;
201:            }
202:
203:            /**
204:             * Retrieves a single setter method (public, private, protected or package) from the provided class
205:             * or one of its superclasses. The lowest subclass method is collected when there is a duplicate.
206:             * A duplicate is defined as having the same method name and parameter types.
207:             *
208:             * @return
209:             */
210:            public Method getGetterMethod(String name)
211:                    throws NoSuchMethodException {
212:                if (name == null || name.trim().equals(""))
213:                    throw new IllegalArgumentException(
214:                            "Name cannot be null or empty");
215:
216:                Method retGetter = null;
217:
218:                for (Method getter : getters) {
219:                    if (getter.getName().equals(name)
220:                            && getter.getParameterTypes().length == 0) {
221:                        retGetter = getter;
222:                        break;
223:                    }
224:                }
225:
226:                if (retGetter == null)
227:                    throw new NoSuchMethodException(
228:                            "No method found for method named " + name);
229:
230:                return retGetter;
231:            }
232:
233:            /**
234:             * Retrieves a single method that is not a setter or getter (public, private, protected or package)
235:             * from the provided class or one of its superclasses. Only the lowest subclass method is collected
236:             * when there is a duplicate. A duplicate is defined as having the same method name and parameter
237:             * types.
238:             *
239:             * @return
240:             */
241:            public Method getMethod(String name, Class[] parameterTypes)
242:                    throws NoSuchMethodException {
243:                if (name == null || name.trim().equals(""))
244:                    throw new IllegalArgumentException(
245:                            "Name cannot be null or empty");
246:
247:                Method retMethod = null;
248:
249:                for (Method method : methods) {
250:                    if (method.getName().equals(name)
251:                            && arrayContentsEq(parameterTypes, method
252:                                    .getParameterTypes())) {
253:                        retMethod = method;
254:                        break;
255:                    }
256:                }
257:
258:                if (retMethod == null)
259:                    throw new NoSuchMethodException(
260:                            "No method found for method named " + name);
261:
262:                return retMethod;
263:            }
264:
265:            /**
266:             * Array of all fields (public, private, protected or package) for the provided class
267:             * and all of its superclasses. The lowest subclass field is collected when there is
268:             * a duplicate. A duplicate is defined as having the same field name and type .
269:             *
270:             * @return
271:             */
272:            public Field[] getFields() {
273:                return fields;
274:            }
275:
276:            /**
277:             * Array of all setter methods (public, private, protected or package) for the provided
278:             * class and all of its superclasses. The lowest subclass method is collected when there
279:             * is a duplicate. A duplicate is defined as having the same method name and parameter
280:             * types.
281:             *
282:             * @return
283:             */
284:            public Method[] getSetters() {
285:                return setters;
286:            }
287:
288:            /**
289:             * Array of all getter methods (public, private, protected or package) for the provided
290:             * class and all of its superclasses. The lowest subclass method is collected when there
291:             * is a duplicate. A duplicate is defined as having the same method name and parameter
292:             * types.
293:             *
294:             * @return
295:             */
296:            public Method[] getGetters() {
297:                return getters;
298:            }
299:
300:            /**
301:             * Array of all methods that are not setters or getters (public, private, protected or package)
302:             * for the provided class and all of its superclasses. The lowest subclass method is collected
303:             * when there is a duplicate. A duplicate is defined as having the same method name and parameter
304:             * types.
305:             *
306:             * @return
307:             */
308:            public Method[] getMethods() {
309:                return getters;
310:            }
311:        }
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