/** * == @Spearal ==> * * Copyright (C) 2014 Franck WOLFF & William DRAI (http://www.spearal.io) * * 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.spearal.impl.property; import java.io.IOException; import java.lang.annotation.Annotation; import java.lang.reflect.Field; import java.lang.reflect.InvocationTargetException; import java.lang.reflect.Method; import java.lang.reflect.Type; import org.spearal.configuration.PropertyFactory.Property; import org.spearal.impl.ExtendedSpearalDecoder; import org.spearal.impl.ExtendedSpearalEncoder; /** * @author Franck WOLFF */ public class AnyProperty implements Property { public static Class<?> typeOf(Field field, Method getter) { if (field != null) return field.getType(); return getter.getReturnType(); } public static Type genericTypeOf(Field field, Method getter) { return (field != null ? field.getGenericType() : getter.getGenericReturnType()); } protected final String name; protected final Field field; protected final Method getter; protected final Method setter; protected final Class<?> type; protected final Type genericType; private final int hash; public AnyProperty(String name, Field field, Method getter, Method setter) { if (name == null || name.length() == 0) throw new IllegalArgumentException("Illegal property name: " + name); if (field != null) field.setAccessible(true); else if (getter == null) throw new IllegalArgumentException("Property '" + name + "' must have at least a field or a getter"); this.name = name; this.field = field; this.getter = getter; this.setter = setter; this.type = typeOf(field, getter); this.genericType = genericTypeOf(field, getter); int hash = name.hashCode(); hash += (31 * hash) + (field != null ? field.hashCode() : 0); hash += (31 * hash) + (getter != null ? getter.hashCode() : 0); hash += (31 * hash) + (setter != null ? setter.hashCode() : 0); this.hash = hash; } @Override public String getName() { return name; } @Override public Class<?> getType() { return type; } @Override public Type getGenericType() { return genericType; } @Override public boolean hasField() { return field != null; } @Override public Field getField() { return field; } @Override public boolean hasGetter() { return getter != null; } @Override public Method getGetter() { return getter; } @Override public boolean hasSetter() { return setter != null; } @Override public Method getSetter() { return setter; } @Override public Class<?> getDeclaringClass() { return (field != null ? field.getDeclaringClass() : getter.getDeclaringClass()); } @Override public Object init(ExtendedSpearalDecoder decoder, Object holder) throws InstantiationException, IllegalAccessException, InvocationTargetException { Object value = decoder.getContext().instantiate(this, null); set(holder, value); return value; } @Override public Object get(Object holder) throws IllegalAccessException, InvocationTargetException { return (field != null ? field.get(holder) : getter.invoke(holder)); } @Override public void set(Object holder, Object value) throws IllegalAccessException, InvocationTargetException { if (field != null) field.set(holder, value); else if (setter != null) setter.invoke(holder, value); } @Override public boolean isAnnotationPresent(Class<? extends Annotation> annotationClass) { return getAnnotation(annotationClass) != null; } @Override public <A extends Annotation> A getAnnotation(Class<A> annotationClass) { A annotation = (field != null ? field.getAnnotation(annotationClass) : null); if (annotation == null) { if (getter != null) annotation = getter.getAnnotation(annotationClass); if (annotation == null && setter != null) annotation = setter.getAnnotation(annotationClass); } return annotation; } @Override public boolean isReadOnly() { return (field == null && setter == null); } @Override public void write(ExtendedSpearalEncoder encoder, Object holder) throws IOException, IllegalAccessException, InvocationTargetException { encoder.writeAny(field != null ? field.get(holder) : getter.invoke(holder)); } @Override public void read(ExtendedSpearalDecoder decoder, Object holder, int parameterizedType) throws IOException, InstantiationException, IllegalAccessException, InvocationTargetException { if (field != null) field.set(holder, decoder.readAny(parameterizedType, genericType)); else if (setter != null) setter.invoke(holder, decoder.readAny(parameterizedType, genericType)); else decoder.skipAny(parameterizedType); } @Override public int hashCode() { return hash; } @Override public boolean equals(Object obj) { if (obj == this) return true; if (obj.getClass() != getClass()) return false; Property p = (Property)obj; return ( name.equals(p.getName()) && (field != null ? field.equals(p.getField()) : p.getField() == null) && (getter != null ? getter.equals(p.getGetter()) : p.getGetter() == null) && (setter != null ? setter.equals(p.getSetter()) : p.getSetter() == null) ); } @Override public String toString() { return getClass().getSimpleName() + ":" + name + " {field=" + field + ", getter=" + getter + ", setter=" + setter + "}"; } }