com.metamatrix.connector.xml.streaming
Class ElementProcessor

java.lang.Object
  com.metamatrix.connector.xml.streaming.ElementProcessor

public class ElementProcessor
extends java.lang.Object

The ElementProcessor extracts data from a Node based upon XPaths defined in an ExecutionInfo (aka columns in a query request) ro build a single result row. In this context Node is equivalent to a table in the model. The processor is also responsible putting the cacheKey in the response row, inserting projected parameters, and applying = criteria.

Constructor Summary

ElementProcessor(ExecutionInfo info)

Method Summary

static boolean	evaluate(java.lang.String currentValue, CriteriaDesc criteria)
void	insertResponseId(Document xml, java.util.List<java.lang.Object[]> result) Iterate over the result and insert the ResponseId in the correct column
java.lang.Object[]	process(nu.xom.Node element) Iterate down the element getting column data from the matching paths.

Methods inherited from class java.lang.Object

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

Constructor Detail

ElementProcessor

public ElementProcessor(ExecutionInfo info)
                 throws ConnectorException

Throws:

ConnectorException

Method Detail

process

public java.lang.Object[] process(nu.xom.Node element)

Iterate down the element getting column data from the matching paths.

Parameters:

element - the Node representing the Table in the model.

Returns:

a single result row

insertResponseId

public void insertResponseId(Document xml,
                             java.util.List<java.lang.Object[]> result)

Iterate over the result and insert the ResponseId in the correct column

Parameters:

xml - the XML Document

result - the result batch for the query

evaluate

public static boolean evaluate(java.lang.String currentValue,
                               CriteriaDesc criteria)