From f5a266953e53a7f1785bcb584759582621ec9de3 Mon Sep 17 00:00:00 2001 From: Rafael Guterres Date: Sat, 21 Nov 2015 01:57:46 -0200 Subject: Add support to generic resources and refactor in classes to support types and commandpattern. --- src/org/traccar/helper/Clazz.java | 105 ++++++++++++++++++++++++++++++++ src/org/traccar/helper/CommandCall.java | 51 ++++++++++++++++ 2 files changed, 156 insertions(+) create mode 100644 src/org/traccar/helper/Clazz.java create mode 100644 src/org/traccar/helper/CommandCall.java (limited to 'src/org/traccar/helper') diff --git a/src/org/traccar/helper/Clazz.java b/src/org/traccar/helper/Clazz.java new file mode 100644 index 000000000..bdde940a0 --- /dev/null +++ b/src/org/traccar/helper/Clazz.java @@ -0,0 +1,105 @@ +/* + * Copyright 2015 Anton Tananaev (anton.tananaev@gmail.com) + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.traccar.helper; + +import java.beans.Introspector; +import java.lang.reflect.Method; +import java.lang.reflect.ParameterizedType; +import java.lang.reflect.Type; + +public final class Clazz { + + private Clazz() { + } + + public static Class getGenericArgumentType(Class currentClass, Class genericSuperClass) { + return getGenericArgumentType(currentClass, genericSuperClass, 0); + } + + public static Class getGenericArgumentType(Class currentClass, int argumentIndex) { + return getGenericArgumentType(currentClass, null, argumentIndex); + } + + public static Class getGenericArgumentType(Class currentClass) { + return getGenericArgumentType(currentClass, null, 0); + } + + public static Class getGenericArgumentType(Class currentClass, Class genericSuperClass, int argumentIndex) { + Type superType = currentClass.getGenericSuperclass(); + if (superType == null) { + throw new IllegalArgumentException(); + } + if (!(superType instanceof ParameterizedType) + || genericSuperClass != null + && ((ParameterizedType) superType).getRawType() != genericSuperClass) { + return getGenericArgumentType(currentClass.getSuperclass(), genericSuperClass, argumentIndex); + } + Object[] args = ((ParameterizedType) superType).getActualTypeArguments(); + if (argumentIndex >= args.length) { + throw new IllegalArgumentException(); + } + return cast(Class.class, args[argumentIndex]); + } + + public static T newInstance(Class clazz) { + try { + return clazz.newInstance(); + } catch (InstantiationException | IllegalAccessException e) { + throw new IllegalArgumentException(); + } + } + + public static T cast(Class classe, Object objeto) { + if (classe.isAssignableFrom(objeto.getClass())) { + return classe.cast(objeto); + } + throw new ClassCastException(); + } + + public static Class forName(String className) { + try { + return Class.forName(className, false, Thread.currentThread().getContextClassLoader()); + } catch (ClassNotFoundException e) { + throw new IllegalArgumentException(e); + } + } + + public static long getId(Object entity) throws Exception { + Method[] methods = entity.getClass().getMethods(); + for (final Method method : methods) { + if (method.getName().startsWith("get") && method.getParameterTypes().length == 0) { + final String name = Introspector.decapitalize(method.getName().substring(3)); + if (name.equals("id")) { + return Long.parseLong(method.invoke(entity).toString()); + } + } + } + throw new IllegalArgumentException(); + } + + public static void setId(Object entity, long id) throws Exception { + Method[] methods = entity.getClass().getMethods(); + for (final Method method : methods) { + if (method.getName().startsWith("set") && method.getParameterTypes().length == 1) { + final String name = Introspector.decapitalize(method.getName().substring(3)); + if (name.equals("id")) { + method.invoke(entity, id); + break; + } + } + } + } +} diff --git a/src/org/traccar/helper/CommandCall.java b/src/org/traccar/helper/CommandCall.java new file mode 100644 index 000000000..d5da79348 --- /dev/null +++ b/src/org/traccar/helper/CommandCall.java @@ -0,0 +1,51 @@ +/* + * Copyright 2015 Anton Tananaev (anton.tananaev@gmail.com) + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.traccar.helper; + +public abstract class CommandCall { + + private long userId; + private T entity; + + public void before() throws Exception { + //Do nothing. + } + + public void check() throws Exception { + //Do nothing. + } + + public void after() throws Exception { + //Do nothing. + } + + public long getUserId() { + return userId; + } + + public void setUserId(long userId) { + this.userId = userId; + } + + public T getEntity() { + return entity; + } + + public void setEntity(T entity) { + this.entity = entity; + } + +} -- cgit v1.2.3