org.teiid.query.xquery.saxon

Class XQueryEvaluator

java.lang.Object

org.teiid.query.xquery.saxon.XQueryEvaluator

public class XQueryEvaluator
extends Object

Used to isolate the xom/nux dependency and to better isolate the saxon processing logic.

Constructor Summary

Constructors

Constructor and Description
XQueryEvaluator()

Method Summary

Modifier and Type	Method and Description
static net.sf.saxon.value.AtomicValue	convertToAtomicValue(Object value)
static Object	evaluate(XMLType value, XMLCast expression, CommandContext context)
static Object	evaluateXMLQuery(List<?> tuple, XMLQuery xmlQuery, boolean exists, Map<String,Object> parameters, CommandContext context)
static SaxonXQueryExpression.Result	evaluateXQuery(SaxonXQueryExpression xquery, Object context, Map<String,Object> parameterValues, SaxonXQueryExpression.RowProcessor processor, CommandContext commandContext)

Methods inherited from class java.lang.Object

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

Constructor Detail

XQueryEvaluator

public XQueryEvaluator()

Method Detail

evaluateXQuery

public static SaxonXQueryExpression.Result evaluateXQuery(SaxonXQueryExpression xquery,
                                                          Object context,
                                                          Map<String,Object> parameterValues,
                                                          SaxonXQueryExpression.RowProcessor processor,
                                                          CommandContext commandContext)
                                                   throws TeiidProcessingException,
                                                          TeiidComponentException

Throws:

TeiidProcessingException

TeiidComponentException

evaluateXMLQuery

public static Object evaluateXMLQuery(List<?> tuple,
                                      XMLQuery xmlQuery,
                                      boolean exists,
                                      Map<String,Object> parameters,
                                      CommandContext context)
                               throws BlockedException,
                                      TeiidComponentException,
                                      FunctionExecutionException

Parameters:

tuple -

xmlQuery -

exists - - check only for the existence of a non-empty result

Returns:

Boolean if exists is true, otherwise an XMLType value

Throws:

BlockedException

TeiidComponentException

FunctionExecutionException

evaluate

public static Object evaluate(XMLType value,
                              XMLCast expression,
                              CommandContext context)
                       throws ExpressionEvaluationException

Throws:

ExpressionEvaluationException

convertToAtomicValue

public static net.sf.saxon.value.AtomicValue convertToAtomicValue(Object value)
                                                           throws TransformerException

Throws:

TransformerException