author | serb |
Sat, 18 Jul 2015 15:09:28 +0300 | |
changeset 32109 | b89c59200379 |
parent 31162 | b4c9194f282c |
child 39003 | 597412b25729 |
permissions | -rw-r--r-- |
25566 | 1 |
/* |
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* Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved. |
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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* |
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* This code is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 only, as |
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* published by the Free Software Foundation. Oracle designates this |
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* particular file as subject to the "Classpath" exception as provided |
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* by Oracle in the LICENSE file that accompanied this code. |
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* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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* or visit www.oracle.com if you need additional information or have any |
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* questions. |
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*/ |
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package com.sun.beans.introspect; |
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import java.beans.BeanProperty; |
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import java.lang.reflect.Field; |
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import java.lang.reflect.Method; |
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import java.lang.reflect.Modifier; |
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import java.lang.reflect.Type; |
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import java.util.ArrayList; |
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import java.util.Collections; |
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import java.util.EnumMap; |
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import java.util.Iterator; |
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import java.util.List; |
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import java.util.Map; |
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import java.util.TreeMap; |
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import static com.sun.beans.finder.ClassFinder.findClass; |
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public final class PropertyInfo { |
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public enum Name {bound, expert, hidden, preferred, required, visualUpdate, description, enumerationValues} |
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private static final String VETO_EXCEPTION_NAME = "java.beans.PropertyVetoException"; |
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private static final Class<?> VETO_EXCEPTION; |
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static { |
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Class<?> type; |
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try { |
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type = Class.forName(VETO_EXCEPTION_NAME); |
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} catch (Exception exception) { |
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type = null; |
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} |
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VETO_EXCEPTION = type; |
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} |
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private Class<?> type; |
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private MethodInfo read; |
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private MethodInfo write; |
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private PropertyInfo indexed; |
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private List<MethodInfo> readList; |
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private List<MethodInfo> writeList; |
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private Map<Name,Object> map; |
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private PropertyInfo() { |
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} |
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private boolean initialize() { |
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if (this.read != null) { |
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this.type = this.read.type; |
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} |
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if (this.readList != null) { |
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for (MethodInfo info : this.readList) { |
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if ((this.read == null) || this.read.type.isAssignableFrom(info.type)) { |
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this.read = info; |
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this.type = info.type; |
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} |
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} |
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this.readList = null; |
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} |
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if (this.writeList != null) { |
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for (MethodInfo info : this.writeList) { |
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if (this.type == null) { |
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this.write = info; |
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this.type = info.type; |
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} else if (this.type.isAssignableFrom(info.type)) { |
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if ((this.write == null) || this.write.type.isAssignableFrom(info.type)) { |
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this.write = info; |
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} |
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} |
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} |
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this.writeList = null; |
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} |
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if (this.indexed != null) { |
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if ((this.type != null) && !this.type.isArray()) { |
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this.indexed = null; // property type is not an array |
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} else if (!this.indexed.initialize()) { |
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this.indexed = null; // cannot initialize indexed methods |
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} else if ((this.type != null) && (this.indexed.type != this.type.getComponentType())) { |
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this.indexed = null; // different property types |
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} else { |
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this.map = this.indexed.map; |
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this.indexed.map = null; |
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} |
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} |
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if ((this.type == null) && (this.indexed == null)) { |
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return false; |
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} |
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initialize(this.write); |
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initialize(this.read); |
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return true; |
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} |
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private void initialize(MethodInfo info) { |
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if (info != null) { |
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BeanProperty annotation = info.method.getAnnotation(BeanProperty.class); |
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if (annotation != null) { |
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if (!annotation.bound()) { |
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put(Name.bound, Boolean.FALSE); |
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} |
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put(Name.expert, annotation.expert()); |
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put(Name.required, annotation.required()); |
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put(Name.hidden, annotation.hidden()); |
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put(Name.preferred, annotation.preferred()); |
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put(Name.visualUpdate, annotation.visualUpdate()); |
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put(Name.description, annotation.description()); |
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String[] values = annotation.enumerationValues(); |
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8079084: Behavior of BeanProperty.enumerationValues() contradicts spec
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try { |
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Object[] array = new Object[3 * values.length]; |
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int index = 0; |
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for (String value : values) { |
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Class<?> type = info.method.getDeclaringClass(); |
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String name = value; |
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int pos = value.lastIndexOf('.'); |
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if (pos > 0) { |
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name = value.substring(0, pos); |
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if (name.indexOf('.') < 0) { |
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String pkg = type.getName(); |
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name = pkg.substring(0, 1 + Math.max( |
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pkg.lastIndexOf('.'), |
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pkg.lastIndexOf('$'))) + name; |
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} |
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type = findClass(name); |
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name = value.substring(pos + 1); |
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} |
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Field field = type.getField(name); |
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if (Modifier.isStatic(field.getModifiers()) && info.type.isAssignableFrom(field.getType())) { |
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array[index++] = name; |
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array[index++] = field.get(null); |
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array[index++] = value; |
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} |
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} |
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if (index == array.length) { |
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put(Name.enumerationValues, array); |
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} |
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} catch (Exception ignored) { |
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ignored.printStackTrace(); |
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} |
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} |
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} |
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} |
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public Class<?> getPropertyType() { |
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return this.type; |
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} |
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public Method getReadMethod() { |
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return (this.read == null) ? null : this.read.method; |
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} |
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public Method getWriteMethod() { |
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return (this.write == null) ? null : this.write.method; |
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} |
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public PropertyInfo getIndexed() { |
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return this.indexed; |
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} |
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public boolean isConstrained() { |
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if (this.write != null) { |
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if (VETO_EXCEPTION == null) { |
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for (Class<?> type : this.write.method.getExceptionTypes()) { |
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if (type.getName().equals(VETO_EXCEPTION_NAME)) { |
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return true; |
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} |
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} |
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} else if (this.write.isThrow(VETO_EXCEPTION)) { |
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return true; |
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} |
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} |
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return (this.indexed != null) && this.indexed.isConstrained(); |
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} |
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public boolean is(Name name) { |
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Object value = get(name); |
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return (value instanceof Boolean) |
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? (Boolean) value |
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: Name.bound.equals(name); |
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} |
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public Object get(Name name) { |
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return this.map == null ? null : this.map.get(name); |
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} |
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private void put(Name name, boolean value) { |
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if (value) { |
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put(name, Boolean.TRUE); |
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} |
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} |
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private void put(Name name, String value) { |
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if (0 < value.length()) { |
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put(name, (Object) value); |
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} |
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} |
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private void put(Name name, Object value) { |
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if (this.map == null) { |
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this.map = new EnumMap<>(Name.class); |
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} |
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this.map.put(name, value); |
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} |
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private static List<MethodInfo> add(List<MethodInfo> list, Method method, Type type) { |
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if (list == null) { |
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list = new ArrayList<>(); |
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} |
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list.add(new MethodInfo(method, type)); |
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return list; |
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} |
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private static boolean isPrefix(String name, String prefix) { |
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return name.length() > prefix.length() && name.startsWith(prefix); |
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} |
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private static PropertyInfo getInfo(Map<String,PropertyInfo> map, String key, boolean indexed) { |
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PropertyInfo info = map.get(key); |
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if (info == null) { |
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info = new PropertyInfo(); |
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map.put(key, info); |
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} |
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if (!indexed) { |
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return info; |
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} |
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if (info.indexed == null) { |
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info.indexed = new PropertyInfo(); |
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} |
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return info.indexed; |
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} |
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public static Map<String,PropertyInfo> get(Class<?> type) { |
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List<Method> methods = ClassInfo.get(type).getMethods(); |
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if (methods.isEmpty()) { |
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return Collections.emptyMap(); |
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} |
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Map<String,PropertyInfo> map = new TreeMap<>(); |
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for (Method method : methods) { |
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if (!Modifier.isStatic(method.getModifiers())) { |
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Class<?> returnType = method.getReturnType(); |
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String name = method.getName(); |
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switch (method.getParameterCount()) { |
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case 0: |
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if (returnType.equals(boolean.class) && isPrefix(name, "is")) { |
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PropertyInfo info = getInfo(map, name.substring(2), false); |
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info.read = new MethodInfo(method, boolean.class); |
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} else if (!returnType.equals(void.class) && isPrefix(name, "get")) { |
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PropertyInfo info = getInfo(map, name.substring(3), false); |
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info.readList = add(info.readList, method, method.getGenericReturnType()); |
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} |
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break; |
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case 1: |
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if (returnType.equals(void.class) && isPrefix(name, "set")) { |
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PropertyInfo info = getInfo(map, name.substring(3), false); |
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info.writeList = add(info.writeList, method, method.getGenericParameterTypes()[0]); |
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} else if (!returnType.equals(void.class) && method.getParameterTypes()[0].equals(int.class) && isPrefix(name, "get")) { |
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PropertyInfo info = getInfo(map, name.substring(3), true); |
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info.readList = add(info.readList, method, method.getGenericReturnType()); |
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} |
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break; |
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case 2: |
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282 |
if (returnType.equals(void.class) && method.getParameterTypes()[0].equals(int.class) && isPrefix(name, "set")) { |
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PropertyInfo info = getInfo(map, name.substring(3), true); |
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info.writeList = add(info.writeList, method, method.getGenericParameterTypes()[1]); |
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285 |
} |
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286 |
break; |
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287 |
} |
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288 |
} |
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289 |
} |
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290 |
Iterator<PropertyInfo> iterator = map.values().iterator(); |
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291 |
while (iterator.hasNext()) { |
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292 |
if (!iterator.next().initialize()) { |
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293 |
iterator.remove(); |
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294 |
} |
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295 |
} |
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296 |
return !map.isEmpty() |
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297 |
? Collections.unmodifiableMap(map) |
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298 |
: Collections.emptyMap(); |
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299 |
} |
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300 |
} |