/**
* Get the DTD elements whose content spec is represented in the DTD DOM by the specified
* runtime class.
*
* <p>Runtimes - DTDEmpty, DTDAny, DTDMixed, DTDPCData
*
* @param dtdItemRuntime - DTDEmpty, DTDAny, DTDMixed, DTDPCData
* @param isInstance Desired results of the isinstance check.
* @return Array of elements names.
*/
private String[] getElements(Class dtdItemRuntime, boolean isInstance) {
Iterator iterator;
Vector elements = new Vector();
String[] returnVal;
iterator = wutkaDTDObject.elements.entrySet().iterator();
while (iterator.hasNext()) {
Map.Entry element = (Map.Entry) iterator.next();
com.wutka.dtd.DTDElement dtdElement = (com.wutka.dtd.DTDElement) element.getValue();
if (dtdItemRuntime.isInstance(dtdElement.getContent()) == isInstance) {
elements.addElement(dtdElement.getName());
}
}
returnVal = new String[elements.size()];
elements.toArray(returnVal);
return returnVal;
}
/** {@inheritDoc} */
public void perform(Element originalElement, Element patchElement, Element outputParentElement)
throws AbstractXmlMergeException {
Element element;
if (originalElement != null) {
element = (Element) originalElement.clone();
} else {
element = (Element) patchElement.clone();
}
DTD dtd = getDTD(outputParentElement);
List<DTDElement> dtdElements = dtd.getItemsByType(DTDElement.class);
// Find the corresponding element
DTDElement parentDtdElement = null;
for (DTDElement dtdElement : dtdElements) {
if (dtdElement.getName().equals(outputParentElement.getName())) {
parentDtdElement = dtdElement;
}
}
if (parentDtdElement == null) {
throw new ElementException(
element, "Element " + outputParentElement.getName() + " not defined in DTD");
} else {
DTDItem item = parentDtdElement.getContent();
if (item instanceof DTDAny) {
// the parent element accepts anything in any order
outputParentElement.addContent(element);
} else if (item instanceof DTDContainer) {
// List existing elements in output parent element
List<Element> existingChildren = outputParentElement.getChildren();
if (existingChildren.size() == 0) {
// This is the first child
outputParentElement.addContent(element);
} else {
List<String> orderedDtdElements = getOrderedDtdElements((DTDContainer) item);
int indexOfNewElementInDtd = orderedDtdElements.indexOf(element.getName());
Debug.log("index of element " + element.getName() + ": " + indexOfNewElementInDtd);
int pos = existingChildren.size();
// Calculate the position in the parent where we insert the
// element
for (int i = 0; i < existingChildren.size(); i++) {
String elementName = (existingChildren.get(i)).getName();
Debug.log(
"index of child " + elementName + ": " + orderedDtdElements.indexOf(elementName));
if (orderedDtdElements.indexOf(elementName) > indexOfNewElementInDtd) {
pos = i;
break;
}
}
Debug.log("adding element " + element.getName() + " add in pos " + pos);
outputParentElement.addContent(pos, element);
}
}
}
}