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author | jsdelfino <jsdelfino@13f79535-47bb-0310-9956-ffa450edef68> | 2008-09-15 00:26:00 +0000 |
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committer | jsdelfino <jsdelfino@13f79535-47bb-0310-9956-ffa450edef68> | 2008-09-15 00:26:00 +0000 |
commit | d5f1d093fe6fa491cdec392dca7137639e98d149 (patch) | |
tree | b98c79d8231a2617ee1dce43b1782d30d93686bc /branches/sca-android/modules/databinding-jaxb/src/main/java/org/apache/tuscany/sca/databinding/jaxb/JAXBPropertyDescriptor.java | |
parent | f4e3e383071b6947d56794d9af5e9e6438aa3235 (diff) |
Pulled a recent revision of trunk into the sca-android branch, to apply the android patches from JIRA TUSCANY-2440 to it.
git-svn-id: http://svn.us.apache.org/repos/asf/tuscany@695318 13f79535-47bb-0310-9956-ffa450edef68
Diffstat (limited to 'branches/sca-android/modules/databinding-jaxb/src/main/java/org/apache/tuscany/sca/databinding/jaxb/JAXBPropertyDescriptor.java')
-rw-r--r-- | branches/sca-android/modules/databinding-jaxb/src/main/java/org/apache/tuscany/sca/databinding/jaxb/JAXBPropertyDescriptor.java | 302 |
1 files changed, 302 insertions, 0 deletions
diff --git a/branches/sca-android/modules/databinding-jaxb/src/main/java/org/apache/tuscany/sca/databinding/jaxb/JAXBPropertyDescriptor.java b/branches/sca-android/modules/databinding-jaxb/src/main/java/org/apache/tuscany/sca/databinding/jaxb/JAXBPropertyDescriptor.java new file mode 100644 index 0000000000..8805d72627 --- /dev/null +++ b/branches/sca-android/modules/databinding-jaxb/src/main/java/org/apache/tuscany/sca/databinding/jaxb/JAXBPropertyDescriptor.java @@ -0,0 +1,302 @@ +/* + * 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.jaxb; + +import java.beans.IndexedPropertyDescriptor; +import java.beans.PropertyDescriptor; +import java.lang.reflect.InvocationTargetException; +import java.lang.reflect.Method; +import java.util.Collection; + +import javax.xml.bind.JAXBElement; +import javax.xml.namespace.QName; + +import org.osoa.sca.ServiceRuntimeException; + +/** + * A PropertyDescriptor provides acesss to a bean property. Values can be queried/changed using the + * read and writer methods of the PropertyDescriptor. + * <p/> + * A PropertyDescriptorPlus object wraps a PropertyDescriptor and supplies enhanced set/get methods + * that match JAXB semantis. + * <p/> + * For example, the set(..) method is smart enough to add lists, arrays and atomic values on JAXB + * beans. + * <p/> + * The PropertyDescriptorPlus object also stores the xmlName of the property. + * + * @See XMLRootElementUtil.createPropertyDescriptorMap , which creates the PropertyDescriptorPlus + * objects + */ +public class JAXBPropertyDescriptor implements Comparable<JAXBPropertyDescriptor> { + PropertyDescriptor descriptor; + QName xmlName = null; + int index; + + /** + * Package protected constructor. Only created by XMLRootElementUtil.createPropertyDescriptorMap + * @param descriptor + * @param index TODO + * @param propertyName + * + * @see XMLRootElementUtil.createPropertyDescriptorMap + */ + JAXBPropertyDescriptor(PropertyDescriptor descriptor, QName xmlName, int index) { + super(); + this.descriptor = descriptor; + this.xmlName = xmlName; + } + + /** + * Package protected constructor. Only created by XMLRootElementUtil.createPropertyDescriptorMap + * @param descriptor + * @param index TODO + * @param propertyName + * + * @see XMLRootElementUtil.createPropertyDescriptorMap + */ + JAXBPropertyDescriptor(PropertyDescriptor descriptor, String xmlName, int index) { + super(); + this.descriptor = descriptor; + this.xmlName = new QName("", xmlName); + } + + public int compareTo(JAXBPropertyDescriptor o) { + return index - o.index; + } + + /** @return xmlname */ + public String getXmlName() { + return xmlName.getLocalPart(); + } + + public QName getXmlQName() { + return xmlName; + } + + /** @return property type */ + public Class<?> getPropertyType() { + return descriptor.getPropertyType(); + } + + /** @return property name */ + public String getPropertyName() { + return descriptor.getName(); + } + + /** + * Get the object + * + * @param targetBean + * @return Object for this property or null + * @throws InvocationTargetException + * @throws IllegalAccessException + */ + public Object get(Object targetBean) throws InvocationTargetException, IllegalAccessException { + Method method = descriptor.getReadMethod(); + if (method == null && descriptor.getPropertyType() == Boolean.class) { + String propertyName = descriptor.getName(); + if (propertyName != null) { + String methodName = "is"; + methodName = + methodName + ((propertyName.length() > 0) ? propertyName.substring(0, 1).toUpperCase() : ""); + methodName = methodName + ((propertyName.length() > 1) ? propertyName.substring(1) : ""); + try { + method = targetBean.getClass().getMethod(methodName); + } catch (NoSuchMethodException e) { + } + } + } + if (method == null) { + throw new ServiceRuntimeException("No getter is found"); + } + Object ret = method.invoke(targetBean); + if (method.getReturnType() == JAXBElement.class) { + ret = ((JAXBElement<?>)ret).getValue(); + } + return ret; + } + + /** + * Set the object + * + * @param targetBean + * @param propValue + * @throws InvocationTargetException + * @throws IllegalAccessException + * @throws JAXBWrapperException + */ + public void set(Object targetBean, Object propValue) throws InvocationTargetException, IllegalAccessException, + JAXBWrapperException { + + Method writeMethod = null; + try { + // No set occurs if the value is null + if (propValue == null) { + return; + } + + // There are 3 different types of setters that can occur. + // 1) Normal Attomic Setter : setFoo(type) + // 2) Indexed Array Setter : setFoo(type[]) + // 3) No Setter case if the property is a List<T>. + + writeMethod = descriptor.getWriteMethod(); + if (descriptor instanceof IndexedPropertyDescriptor) { + // Set for indexed T[] + setIndexedArray(targetBean, propValue, writeMethod); + } else if (writeMethod == null) { + // Set for List<T> + setList(targetBean, propValue); + } else if (descriptor.getPropertyType() == JAXBElement.class) { + if (propValue != null) { + Class<?> clazz = propValue.getClass(); + JAXBElement<?> element = new JAXBElement(xmlName, clazz, propValue); + setAtomic(targetBean, element, writeMethod); + } + } else { + // Normal case + setAtomic(targetBean, propValue, writeMethod); + } + } catch (RuntimeException e) { + throw e; + } + } + + /** + * Set the property value onto targetBean using the writeMethod + * + * @param targetBean + * @param propValue + * @param writeMethod (set(T)) + * @throws InvocationTargetException + * @throws IllegalAccessException + * @throws JAXBWrapperException + */ + private void setAtomic(Object targetBean, Object propValue, Method writeMethod) throws InvocationTargetException, + IllegalAccessException, JAXBWrapperException { + // JAXB provides setters for atomic value. + + if (propValue != null) { + // Normal case + Object[] SINGLE_PARAM = new Object[1]; + SINGLE_PARAM[0] = propValue; + writeMethod.invoke(targetBean, SINGLE_PARAM); + } else { + Class<?>[] paramTypes = writeMethod.getParameterTypes(); + + if (paramTypes != null && paramTypes.length == 1) { + Class<?> paramType = paramTypes[0]; + if (paramType.isPrimitive() && propValue == null) { + //Ignoring null value for primitive type, this could potentially be the way of a customer indicating to set + //default values defined in JAXBObject/xmlSchema. + return; + } + } + } + + } + + /** + * Set the property value using the indexed array setter + * + * @param targetBean + * @param propValue + * @param writeMethod set(T[]) + * @throws InvocationTargetException + * @throws IllegalAccessException + * @throws JAXBWrapperException + */ + private void setIndexedArray(Object targetBean, Object propValue, Method writeMethod) + throws InvocationTargetException, IllegalAccessException, JAXBWrapperException { + + Class<?> paramType = writeMethod.getParameterTypes()[0]; + Object value = asArray(propValue, paramType); + // JAXB provides setters for atomic value. + Object[] SINGLE_PARAM = new Object[1]; + SINGLE_PARAM[0] = value; + + writeMethod.invoke(targetBean, SINGLE_PARAM); + } + + /** + * Set the property value for the collection case. + * + * @param targetBean + * @param propValue + * @throws InvocationTargetException + * @throws IllegalAccessException + * @throws JAXBWrapperException + */ + private void setList(Object targetBean, Object propValue) throws InvocationTargetException, IllegalAccessException, + JAXBWrapperException { + // For the List<T> case, there is no setter. + // You are supposed to use the getter to obtain access to the collection and then add the collection + + Collection value = asCollection(propValue, descriptor.getPropertyType()); + Collection collection = (Collection)get(targetBean); + + // Now add our our object to the collection + collection.clear(); + if (propValue != null) { + collection.addAll(value); + } + } + + /** + * @param propValue + * @param destType + * @return propValue as a Collection + */ + private static Collection asCollection(Object propValue, Class<?> destType) { + // TODO Missing function + // Convert the object into an equivalent object that is a collection + if (DataConverter.isConvertable(propValue, destType)) { + return (Collection)DataConverter.convert(propValue, destType); + } else { + String objectClass = (propValue == null) ? "null" : propValue.getClass().getName(); + throw new ServiceRuntimeException("Cannot convert " + objectClass); + } + } + + /** + * @param propValue + * @param destType T[] + * @return array of component type + */ + private static Object asArray(Object propValue, Class<?> destType) { + if (DataConverter.isConvertable(propValue, destType)) { + return DataConverter.convert(propValue, destType); + } else { + String objectClass = (propValue == null) ? "null" : propValue.getClass().getName(); + throw new ServiceRuntimeException("Cannot convert " + objectClass); + + } + } + + @Override + public String toString() { + String value = "PropertyDescriptorPlus["; + value += " name=" + this.getPropertyName(); + value += " type=" + this.getPropertyType().getName(); + value += " propertyDecriptor=" + this.descriptor; + return value + "]"; + } +} |