try {
List unionNodes=new ArrayList();
List substractNodes=new ArrayList();
List intersectNodes=new ArrayList();
CachedXPathFuncHereAPI xPathFuncHereAPI =
new CachedXPathFuncHereAPI(CachedXPathAPIHolder.getCachedXPathAPI());
Element []xpathElements =XMLUtils.selectNodes(
this._transformObject.getElement().getFirstChild(),
XPath2FilterContainer.XPathFilter2NS,
XPath2FilterContainer._TAG_XPATH2);
int noOfSteps = xpathElements.length;
if (noOfSteps == 0) {
Object exArgs[] = { Transforms.TRANSFORM_XPATH2FILTER, "XPath" };
throw new TransformationException("xml.WrongContent", exArgs);
}
Document inputDoc = null;
if (input.getSubNode() != null) {
inputDoc = XMLUtils.getOwnerDocument(input.getSubNode());
} else {
inputDoc = XMLUtils.getOwnerDocument(input.getNodeSet());
}
for (int i = 0; i < noOfSteps; i++) {
Element xpathElement =XMLUtils.selectNode(
this._transformObject.getElement().getFirstChild(),
XPath2FilterContainer.XPathFilter2NS,
XPath2FilterContainer._TAG_XPATH2,i);
XPath2FilterContainer xpathContainer =
XPath2FilterContainer.newInstance(xpathElement,
input.getSourceURI());
NodeList subtreeRoots = xPathFuncHereAPI.selectNodeList(inputDoc,
xpathContainer.getXPathFilterTextNode(),
CachedXPathFuncHereAPI.getStrFromNode(xpathContainer.getXPathFilterTextNode()),
xpathContainer.getElement());
if (xpathContainer.isIntersect()) {
intersectNodes.add(subtreeRoots);