ch.ethz.mxquery.iterators
Class CompareIterator

java.lang.Object
  ch.ethz.mxquery.model.Iterator
      ch.ethz.mxquery.model.TokenBasedIterator
          ch.ethz.mxquery.iterators.CompareIterator

All Implemented Interfaces:

XDMIterator, Traversable

public class CompareIterator
extends TokenBasedIterator

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

CompareIterator(Context ctx, int compareType, int comparator, XDMIterator[] subIters, QueryLocation location)

Method Summary

int	getComparator()
int	getCompareType()
XDMIterator	getLeftPart()
XDMIterator	getRightPart()
void	setResettable(boolean r) Set this Iterator (and its subiterators) resetable.

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

next

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, 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

CompareIterator

public CompareIterator(Context ctx,
                       int compareType,
                       int comparator,
                       XDMIterator[] subIters,
                       QueryLocation location)
                throws MXQueryException

Throws:

MXQueryException

Method Detail

setResettable

public void setResettable(boolean r)
                   throws MXQueryException

Description copied from interface: XDMIterator

Set this Iterator (and its subiterators) resetable. Resetable iterators may require more space (trading buffered data against recomputation)

Specified by:

setResettable in interface XDMIterator

Overrides:

setResettable in class Iterator

Parameters:

r - true make this iterator resetable, false make it not resetable

Throws:

MXQueryException

getComparator

public int getComparator()

getCompareType

public int getCompareType()

getLeftPart

public XDMIterator getLeftPart()

getRightPart

public XDMIterator getRightPart()