From e5b7380c874745c989d1816b8f552504f038e1bc Mon Sep 17 00:00:00 2001 From: lresende Date: Thu, 26 Sep 2013 20:33:20 +0000 Subject: 2.0 branch for possible maintenance release git-svn-id: http://svn.us.apache.org/repos/asf/tuscany@1526672 13f79535-47bb-0310-9956-ffa450edef68 --- .../databinding/xml/BeanXMLStreamReaderImpl.java | 300 +++++++++++++++++++++ 1 file changed, 300 insertions(+) create mode 100644 sca-java-2.x/branches/2.0/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/xml/BeanXMLStreamReaderImpl.java (limited to 'sca-java-2.x/branches/2.0/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/xml/BeanXMLStreamReaderImpl.java') diff --git a/sca-java-2.x/branches/2.0/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/xml/BeanXMLStreamReaderImpl.java b/sca-java-2.x/branches/2.0/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/xml/BeanXMLStreamReaderImpl.java new file mode 100644 index 0000000000..ed59911a0b --- /dev/null +++ b/sca-java-2.x/branches/2.0/modules/databinding/src/main/java/org/apache/tuscany/sca/databinding/xml/BeanXMLStreamReaderImpl.java @@ -0,0 +1,300 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you 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.apache.tuscany.sca.databinding.xml; + +import java.beans.BeanInfo; +import java.beans.Introspector; +import java.beans.PropertyDescriptor; +import java.lang.reflect.Array; +import java.lang.reflect.Field; +import java.lang.reflect.Method; +import java.util.ArrayList; +import java.util.Arrays; +import java.util.Collection; +import java.util.Collections; +import java.util.Comparator; +import java.util.HashMap; +import java.util.Iterator; +import java.util.List; +import java.util.Map; + +import javax.xml.namespace.QName; + +import org.apache.tuscany.sca.common.xml.stax.reader.SimpleXmlNodeImpl; +import org.apache.tuscany.sca.common.xml.stax.reader.XmlNode; +import org.apache.tuscany.sca.common.xml.stax.reader.XmlTreeStreamReaderImpl; +import org.apache.tuscany.sca.databinding.SimpleTypeMapper; +import org.apache.tuscany.sca.databinding.impl.SimpleTypeMapperImpl; +import org.apache.tuscany.sca.interfacedef.util.TypeInfo; + +/** + * @version $Rev$ $Date$ + */ +public class BeanXMLStreamReaderImpl extends XmlTreeStreamReaderImpl { + private static final Comparator COMPARATOR = new Comparator() { + public int compare(Accessor o1, Accessor o2) { + return o1.getName().compareTo(o2.getName()); + } + }; + + public static class BeanXmlNodeImpl extends SimpleXmlNodeImpl implements XmlNode { + private static final Object[] NULL = null; + private static final SimpleTypeMapper MAPPER = new SimpleTypeMapperImpl(); + + public BeanXmlNodeImpl(Object bean) { + super(getName(bean == null ? null : bean.getClass()), bean); + } + + public BeanXmlNodeImpl(QName name, Object bean) { + super(name, bean); + } + + private static boolean isSimpleType(Class javaType) { + return MAPPER.getXMLType(javaType) != null; + } + + private static String getStringValue(Object o) { + if (o == null) { + return null; + } + TypeInfo info = MAPPER.getXMLType(o.getClass()); + if (info != null) { + return MAPPER.toXMLLiteral(info.getQName(), o, null); + } else { + return String.valueOf(o); + } + } + + @Override + public Iterator children() { + if (name == null) { + return null; + } + if (value == null) { + return super.children(); + } + if (isSimpleType(value.getClass())) { + XmlNode textNode = new BeanXmlNodeImpl(null, value); + return Arrays.asList(textNode).iterator(); + } + if (Map.class.isAssignableFrom(value.getClass())) { + List entries = new ArrayList(); + QName entryName = new QName(name.getNamespaceURI(), "entry"); + Map map = (Map)value; + if (map != null) { + for (Object e : map.entrySet()) { + Map.Entry entry = (Map.Entry)e; + entries.add(new BeanXmlNodeImpl(entryName, entry)); + } + } + return entries.iterator(); + } + try { + Map accessorMap = getAccessors(value); + List accessorList = new ArrayList(accessorMap.values()); + Collections.sort(accessorList, COMPARATOR); + + List props = new ArrayList(); + for (Accessor accessor : accessorList) { + Class pType = accessor.getType(); + + QName pName = new QName(name.getNamespaceURI(), accessor.getName()); + Object pValue = accessor.getValue(); + if (pType.isArray()) { + if (pValue != null) { + int i1 = Array.getLength(pValue); + for (int j = 0; j < i1; j++) { + Object o = Array.get(pValue, j); + props.add(new BeanXmlNodeImpl(pName, o)); + } + } else { + // TODO: How to handle null? + } + } else if (Collection.class.isAssignableFrom(pType)) { + Collection objList = (Collection)pValue; + if (objList != null && objList.size() > 0) { + for (Iterator j = objList.iterator(); j.hasNext();) { + Object o = j.next(); + props.add(new BeanXmlNodeImpl(pName, o)); + } + + } else { + // How to handle null + } + } else { + props.add(new BeanXmlNodeImpl(pName, pValue)); + } + } + return props.iterator(); + } catch (Exception e) { + throw new IllegalArgumentException(e); + } + } + + @Override + public QName getName() { + return name; + } + + @Override + public String getValue() { + return getStringValue(value); + } + + private static String getPackageName(Class cls) { + String name = cls.getName(); + int index = name.lastIndexOf('.'); + return index == -1 ? "" : name.substring(0, index); + } + + public static QName getName(Class cls) { + if (cls == null) { + return null; + } + + String packageName = getPackageName(cls); + + if ("".equals(packageName)) { + return new QName("", cls.getSimpleName()); + } + StringBuffer ns = new StringBuffer("http://"); + String[] names = packageName.split("\\."); + for (int i = names.length - 1; i >= 0; i--) { + ns.append(names[i]); + if (i != 0) { + ns.append('.'); + } + } + ns.append('/'); + return new QName(ns.toString(), cls.getSimpleName()); + } + + } + + public BeanXMLStreamReaderImpl(QName name, Object bean) { + super(getXmlNode(name, bean)); + } + + private static BeanXmlNodeImpl getXmlNode(QName name, Object bean) { + BeanXmlNodeImpl root = null; + if (name != null) { + root = new BeanXmlNodeImpl(name, bean); + } else { + root = new BeanXmlNodeImpl(bean); + } + return root; + } + + public static interface Accessor { + String getName(); + + Class getType(); + + Object getValue() throws Exception; + + void setValue(Object value) throws Exception; + } + + private static class FieldAccessor implements Accessor { + private Object target; + private Field field; + + public FieldAccessor(Object target, Field field) { + super(); + this.target = target; + this.field = field; + this.field.setAccessible(true); + } + + public String getName() { + return field.getName(); + } + + public Object getValue() throws Exception { + return field.get(target); + } + + public void setValue(Object value) throws Exception { + field.set(target, value); + } + + public Class getType() { + return field.getType(); + } + + } + + private static class PropertyAccessor implements Accessor { + private Object target; + private PropertyDescriptor prop; + + public PropertyAccessor(Object target, PropertyDescriptor prop) { + super(); + this.target = target; + this.prop = prop; + } + + public String getName() { + return prop.getName(); + } + + public Class getType() { + return prop.getPropertyType(); + } + + public Object getValue() throws Exception { + Method getter = prop.getReadMethod(); + if (getter != null) { + getter.setAccessible(true); + return getter.invoke(target); + } + throw new IllegalAccessException("The property cannot be read: " + getName()); + } + + public void setValue(Object value) throws Exception { + Method setter = prop.getWriteMethod(); + if (setter != null) { + setter.setAccessible(true); + setter.invoke(target); + } + throw new IllegalAccessException("The property cannot be written: " + getName()); + } + + } + + private static Map getAccessors(Object target) throws Exception { + if (target == null) { + return Collections.emptyMap(); + } + Map map = new HashMap(); + Class type = target.getClass(); + for (Field f : type.getFields()) { + map.put(f.getName(), new FieldAccessor(target, f)); + } + BeanInfo info = Introspector.getBeanInfo(type, Object.class); + for (PropertyDescriptor p : info.getPropertyDescriptors()) { + // if (p.getReadMethod() != null && p.getWriteMethod() != null) { + map.put(p.getName(), new PropertyAccessor(target, p)); + // } + } + return map; + } + +} -- cgit v1.2.3