ch.ethz.mxquery.iterators.scripting
Class CatchIterator

java.lang.Object
  ch.ethz.mxquery.model.Iterator
      ch.ethz.mxquery.model.CurrentBasedIterator
          ch.ethz.mxquery.iterators.scripting.CatchIterator

All Implemented Interfaces:

XDMIterator, Traversable

public class CatchIterator
extends CurrentBasedIterator

Represents a catch expression of a try.

Field Summary

Fields inherited from interface ch.ethz.mxquery.model.XDMIterator

EXPR_CATEGORY_SEQUENTIAL, EXPR_CATEGORY_SIMPLE, EXPR_CATEGORY_UPDATING, EXPR_CATEGORY_VACUOUS, EXPR_PARAM_CHEAPEVAL, EXPR_PARAM_VARIABLE, EXPR_PARAM_WINDOW, EXPR_PARAM_XDMGEN

Constructor Summary

CatchIterator(Context ctx, XDMIterator catchExpr, java.lang.Object nametest, QName errorCode, QName errorDescr, QName errorVal, QueryLocation location)

Method Summary

boolean	compareErrCodes(QName otherCode)
void	freeResources(boolean restartable) Frees the resources of the current iterator.
Token	next() Produces the next XDM token This method typically implements the base functionality of an Iterator and computes the value of the next token.
void	resetImpl() Resets the Iterator to its original state.

Methods inherited from class ch.ethz.mxquery.model.Iterator

addPredicates, close, copy, copyInts, copyIterators, copyQNames, copyStrings, copyTypeInfos, getAllSubIters, getAllSubItersRecursive, getContext, getExpressionCategoryType, getLoc, getPendingUpdateList, getPredicates, getStaticType, getSubIters, hasPredicates, isConstModePreserve, isExprParameter, isOpen, isResettable, removePredicates, reset, setConstModePreserve, setContext, setLoc, setOrderByExpr, setParam, setResettable, setReturnExpr, setSubIters, setSubIters, setSubIters, setWhereExpr, traverse, traverseIteratorTree

Methods inherited from class java.lang.Object

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

Constructor Detail

CatchIterator

public CatchIterator(Context ctx,
                     XDMIterator catchExpr,
                     java.lang.Object nametest,
                     QName errorCode,
                     QName errorDescr,
                     QName errorVal,
                     QueryLocation location)

Method Detail

freeResources

public void freeResources(boolean restartable)
                   throws MXQueryException

Description copied from class: Iterator

Frees the resources of the current iterator.

Parameters:

restartable - make the iterator restartable (otherwise the iterator will stay closed with additional next calls)

Throws:

MXQueryException

resetImpl

public void resetImpl()
               throws MXQueryException

Description copied from class: Iterator

Resets the Iterator to its original state. Iterator-specific implementation is done here.

Throws:

MXQueryException

next

public Token next()
           throws MXQueryException

Description copied from interface: XDMIterator

Produces the next XDM token This method typically implements the base functionality of an Iterator and computes the value of the next token.

Returns:

The XDM token representing the next fragment of the XDM instance

Throws:

MXQueryException

compareErrCodes

public boolean compareErrCodes(QName otherCode)
                        throws MXQueryException

Throws:

MXQueryException