String xpath = "//IDOC[position()>=1 and position()<=3]";
XPath xpathObj = XPath.getXPathInstance(xpath);
XPathReader xpathReaderObj = XPathReader.getXPathReader(xpathObj, null,oDoc, fileName);
xpathReaderObj.open();
int resultNode = xpathReaderObj.loadNextNode();
Explanation of the above scenario :
In Order to read the data only chunkwise you need to go with xpathReader to have better performance as this thing will be reading on chunk basis.
Problem : But the problem with this function is, It won't load the CDATA elements if your XML have any. Instead the element nodes will be empty.
XPath xpathObj = XPath.getXPathInstance(xpath);
XPathReader xpathReaderObj = XPathReader.getXPathReader(xpathObj, null,oDoc, fileName);
xpathReaderObj.open();
int resultNode = xpathReaderObj.loadNextNode();
Explanation of the above scenario :
In Order to read the data only chunkwise you need to go with xpathReader to have better performance as this thing will be reading on chunk basis.
Problem : But the problem with this function is, It won't load the CDATA elements if your XML have any. Instead the element nodes will be empty.
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