/**
* Searches the children of an element looking for a Text node. If it finds one, it returns it.
*
* @param element The element whose children will be searched
* @return The text for the element, or null if there is none
*/
public static String getElementString(Element element) {
NodeList nodes = element.getChildNodes();
int numNodes = nodes.getLength();
for (int i = 0; i < numNodes; i++) {
Node node = nodes.item(i);
if (node instanceof Text) {
return ((Text) node).getData();
}
}
return null;
}
/**
* Reads the children of an XML element and matches them to properties of a bean.
*
* @param ob The bean to receive the values
* @param element The element the corresponds to the bean
* @throws IOException If there is an error reading the document
*/
public void readObject(Object ob, Element element) throws IOException {
// If the object is null, skip the element
if (ob == null) {
return;
}
try {
BeanInfo info = (BeanInfo) beanCache.get(ob.getClass());
if (info == null) {
// Get the bean info for the object
info = Introspector.getBeanInfo(ob.getClass(), Object.class);
beanCache.put(ob.getClass(), info);
}
// Get the object's properties
PropertyDescriptor[] props = info.getPropertyDescriptors();
// Get the attributes of the node
NamedNodeMap attrs = element.getAttributes();
// Get the children of the XML element
NodeList nodes = element.getChildNodes();
int numNodes = nodes.getLength();
for (int i = 0; i < props.length; i++) {
// Treat indexed properties a little differently
if (props[i] instanceof IndexedPropertyDescriptor) {
readIndexedProperty(ob, (IndexedPropertyDescriptor) props[i], nodes, attrs);
} else {
readProperty(ob, props[i], nodes, attrs);
}
}
} catch (IntrospectionException exc) {
throw new IOException(
"Error getting bean info for " + ob.getClass().getName() + ": " + exc.toString());
}
}
private Object deserialize(Node node, boolean setProperty, boolean popBean) throws Exception {
Object object = null;
currentType = null;
currentNode = node;
currentName = node.getNodeName();
boolean isNull = false;
NamedNodeMap attrs = node.getAttributes();
String arrayType = null;
for (int i = 0; i < attrs.getLength(); i++) {
String nodeName = attrs.item(i).getNodeName();
String nodeValue = attrs.item(i).getNodeValue();
if (nodeName.equals(NamespaceConstants.NSPREFIX_SCHEMA_XSI + ":" + Constants.ATTR_TYPE))
currentType = new StringBuffer(nodeValue).delete(0, nodeValue.indexOf(':') + 1).toString();
else if (nodeName.equals(
NamespaceConstants.NSPREFIX_SOAP_ENCODING + ":" + Constants.ATTR_ARRAY_TYPE))
arrayType = new StringBuffer(nodeValue).delete(0, nodeValue.indexOf(':') + 1).toString();
else if (nodeName.equals(NamespaceConstants.NSPREFIX_SCHEMA_XSI + ":null"))
isNull = nodeValue.equals("true");
}
Class cls = null;
if (currentType != null) cls = getXsdTypeClass(currentType);
// Handle array, Vector, ArrayList, LinkedList, Hashtable,
// Properties, and HashMap data types
if ((cls != null)
&& ((cls == java.lang.reflect.Array.class)
|| (cls == Vector.class)
|| (cls == ArrayList.class)
|| (cls == LinkedList.class)
|| (cls == Hashtable.class)
|| (cls == Properties.class)
|| (cls == HashMap.class)
|| (cls == SortedMap.class))) {
parentNode = currentNode;
String name = node.getNodeName();
// Handle arrays
if (cls == java.lang.reflect.Array.class) {
int a = arrayType.indexOf("[");
int b = arrayType.indexOf("]");
String s = arrayType.substring(a + 1, b);
int arrayLen = Integer.valueOf(s).intValue();
arrayType = arrayType.substring(0, a);
// check if the array element is a standard Java class
Class arrayClass = getXsdTypeClass(arrayType);
// otherwise try to get the class of the bean
if (arrayClass == null)
arrayClass = getClassOfBean((ClassLoader) classLoaderStrategy, arrayType);
object = java.lang.reflect.Array.newInstance(arrayClass, arrayLen);
} else {
// Construct the list or map type
Constructor ct = cls.getConstructor((Class[]) null);
object = ct.newInstance((Object[]) null);
}
// deserialize the elements of the array, list, or map
NodeList childNodes = node.getChildNodes();
int arrayIndex = -1;
Node childNode = null;
Object nodeObj = null;
for (int i = 0; i < childNodes.getLength(); i++) {
childNode = childNodes.item(i);
if (childNode.getNodeType() == Node.ELEMENT_NODE) {
if ((cls == java.lang.reflect.Array.class)
|| (cls == Vector.class)
|| (cls == ArrayList.class)
|| (cls == LinkedList.class)) {
nodeObj = deserialize(childNode, false, true);
if (nodeObj != null) {
if (cls == java.lang.reflect.Array.class)
java.lang.reflect.Array.set(object, ++arrayIndex, nodeObj);
else ((List) object).add(nodeObj);
}
} else if ((cls == Hashtable.class)
|| (cls == Properties.class)
|| (cls == HashMap.class)
|| (cls == SortedMap.class)) {
if (childNode.getLocalName().equals("item")) {
NodeList htNodes = childNode.getChildNodes();
if (htNodes.getLength() == 2) {
Object hashKey = deserialize(htNodes.item(0), false, false);
Object hashValue = deserialize(htNodes.item(1), false, true);
((Map) object).put(hashKey, hashValue);
}
}
}
}
}
setBeanProperty(name, object);
// Handle everything else (primitives & POJOs)
} else {
// recurse on each of the child nodes
NodeList childNodes = node.getChildNodes();
if ((childNodes != null) && (childNodes.getLength() > 0)) {
for (int i = 0; i < childNodes.getLength(); i++) {
Node childNode = childNodes.item(i);
if (childNode.getNodeType() == Node.ELEMENT_NODE) {
if (currentType != null)
createObject(
node,
currentName,
currentPackage,
currentType,
childNode.getNodeValue(),
setProperty);
parentNode = node;
object = deserialize(childNode, true, true);
} else if ((childNode.getNodeType() == Node.TEXT_NODE) && (currentType != null)) {
object =
createObject(
node,
currentName,
currentPackage,
currentType,
childNode.getNodeValue(),
setProperty);
}
currentType = null;
}
} else {
if (!isNull)
object = createObject(node, currentName, currentPackage, currentType, null, setProperty);
}
if (node.getParentNode() != parentNode) {
parentNode = node.getParentNode();
if (popBean) {
Object bean = popBeanOffStack();
if (bean != null) object = bean;
}
}
}
return object;
}
/**
* Reads XML element(s) into an indexed bean property by first locating the XML element(s)
* corresponding to this property.
*
* @param ob The bean whose property is being set
* @param desc The property that will be set
* @param nodes The list of XML items that may contain the property
* @throws IOException If there is an error reading the document
*/
public void readIndexedProperty(
Object ob, IndexedPropertyDescriptor desc, NodeList nodes, NamedNodeMap attrs)
throws IOException {
// Create a vector to hold the property values
Vector v = new Vector();
int numAttrs = attrs.getLength();
for (int i = 0; i < numAttrs; i++) {
// See if this attribute matches the property name
if (namesMatch(desc.getName(), attrs.item(i).getNodeName())) {
// Get the property value
Object obValue = getObjectValue(desc, attrs.item(i).getNodeValue());
if (obValue != null) {
// Add the value to the list of values to be set
v.addElement(obValue);
}
}
}
int numNodes = nodes.getLength();
for (int i = 0; i < numNodes; i++) {
Node node = nodes.item(i);
// Skip non-element nodes
if (!(node instanceof Element)) continue;
Element element = (Element) node;
// See if this element tag matches the property name
if (namesMatch(desc.getName(), element.getTagName())) {
// Get the property value
Object obValue = getObjectValue(desc, element);
if (obValue != null) {
// Add the value to the list of values to be set
v.addElement(obValue);
}
}
}
// Get the method used to set the property value
Method setter = desc.getWriteMethod();
// If this property has no setter, don't write it
if (setter == null) return;
// Create a new array of property values
Object propArray = Array.newInstance(desc.getPropertyType().getComponentType(), v.size());
// Copy the vector into the array
v.copyInto((Object[]) propArray);
try {
// Store the array of property values
setter.invoke(ob, new Object[] {propArray});
} catch (InvocationTargetException exc) {
throw new IOException("Error setting property " + desc.getName() + ": " + exc.toString());
} catch (IllegalAccessException exc) {
throw new IOException("Error setting property " + desc.getName() + ": " + exc.toString());
}
}
/**
* Reads an XML element into a bean property by first locating the XML element corresponding to
* this property.
*
* @param ob The bean whose property is being set
* @param desc The property that will be set
* @param nodes The list of XML items that may contain the property
* @throws IOException If there is an error reading the document
*/
public void readProperty(Object ob, PropertyDescriptor desc, NodeList nodes, NamedNodeMap attrs)
throws IOException {
int numAttrs = attrs.getLength();
for (int i = 0; i < numAttrs; i++) {
// See if the attribute name matches the property name
if (namesMatch(desc.getName(), attrs.item(i).getNodeName())) {
// Get the method used to set this property
Method setter = desc.getWriteMethod();
// If this object has no setter, don't bother writing it
if (setter == null) continue;
// Get the value of the property
Object obValue = getObjectValue(desc, attrs.item(i).getNodeValue());
if (obValue != null) {
try {
// Set the property value
setter.invoke(ob, new Object[] {obValue});
} catch (InvocationTargetException exc) {
throw new IOException(
"Error setting property " + desc.getName() + ": " + exc.toString());
} catch (IllegalAccessException exc) {
throw new IOException(
"Error setting property " + desc.getName() + ": " + exc.toString());
}
}
return;
}
}
int numNodes = nodes.getLength();
Vector arrayBuild = null;
for (int i = 0; i < numNodes; i++) {
Node node = nodes.item(i);
// If this node isn't an element, skip it
if (!(node instanceof Element)) continue;
Element element = (Element) node;
// See if the tag name matches the property name
if (namesMatch(desc.getName(), element.getTagName())) {
// Get the method used to set this property
Method setter = desc.getWriteMethod();
// If this object has no setter, don't bother writing it
if (setter == null) continue;
// Get the value of the property
Object obValue = getObjectValue(desc, element);
// 070201 MAW: Modified from change submitted by Steve Poulson
if (setter.getParameterTypes()[0].isArray()) {
if (arrayBuild == null) {
arrayBuild = new Vector();
}
arrayBuild.addElement(obValue);
// 070201 MAW: Go ahead and read through the rest of the nodes in case
// another one matches the array. This has the effect of skipping
// over the "return" statement down below
continue;
}
if (obValue != null) {
try {
// Set the property value
setter.invoke(ob, new Object[] {obValue});
} catch (InvocationTargetException exc) {
throw new IOException(
"Error setting property " + desc.getName() + ": " + exc.toString());
} catch (IllegalAccessException exc) {
throw new IOException(
"Error setting property " + desc.getName() + ": " + exc.toString());
}
}
return;
}
}
// If we build a vector of array members, convert the vector into
// an array and save it in the property
if (arrayBuild != null) {
// Get the method used to set this property
Method setter = desc.getWriteMethod();
if (setter == null) return;
Object[] obValues = (Object[]) Array.newInstance(desc.getPropertyType(), arrayBuild.size());
arrayBuild.copyInto(obValues);
try {
setter.invoke(ob, new Object[] {obValues});
} catch (InvocationTargetException exc) {
throw new IOException("Error setting property " + desc.getName() + ": " + exc.toString());
} catch (IllegalAccessException exc) {
throw new IOException("Error setting property " + desc.getName() + ": " + exc.toString());
}
return;
}
}
