org.knime.core.data.xml.io
Class XMLXpathCellReader

java.lang.Object
  org.knime.core.data.xml.io.XMLXpathCellReader

All Implemented Interfaces:

XMLCellReader

public class XMLXpathCellReader
extends Object
implements XMLCellReader

Read nodes from XML source which match an XPath expression. Note, that the XPath syntax is very limited. Absolute path to nodes and the |-Operator is supported, only.

Author:

Heiko Hofer

Constructor Summary

XMLXpathCellReader(InputStream is, LimitedXPathMatcher xpathMatcher)
Create a new instance.

Method Summary

void	close() Closes any resources need for the read process.
XMLValue	readXML() Reads the next XML @link{DataCell}.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

XMLXpathCellReader

public XMLXpathCellReader(InputStream is,
                          LimitedXPathMatcher xpathMatcher)
                   throws ParserConfigurationException,
                          XMLStreamException

Create a new instance.

Parameters:

is - the xml source

xpathMatcher - nodes of the input that match will be read, only

Throws:

ParserConfigurationException

XMLStreamException

Method Detail

readXML

public XMLValue readXML()
                 throws IOException

Reads the next XML @link{DataCell}.

Specified by:

readXML in interface XMLCellReader

Returns:

The next @link{DataCell} or null when there is nothing to read. Note that this data cell implements @link{XMLValue}.

Throws:

IOException - If an error occurred during the read process.

close

public void close()
           throws IOException

Closes any resources need for the read process.

Specified by:

close in interface XMLCellReader

Throws:

IOException - If an error occurred.