ch.ethz.mxquery.iterators.forseq
Class ForseqWindowNaiveIterator

java.lang.Object
  ch.ethz.mxquery.model.Iterator
      ch.ethz.mxquery.model.TokenBasedIterator
          ch.ethz.mxquery.iterators.forseq.ForseqIterator
              ch.ethz.mxquery.iterators.forseq.ForseqWindowIterator
                  ch.ethz.mxquery.iterators.forseq.ForseqWindowNaiveIterator

All Implemented Interfaces:

XDMIterator, Traversable

public final class ForseqWindowNaiveIterator
extends ForseqWindowIterator

The first naive implementation of the FORSEQ Window

Field Summary

Fields inherited from class ch.ethz.mxquery.iterators.forseq.ForseqIterator

GENERAL_WINDOW, LANDMARK_WINDOW, ORDER_MODE_END, ORDER_MODE_ENDSTART, ORDER_MODE_NONE, SLIDING_WINDOW, TUMBLING_WINDOW

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

ForseqWindowNaiveIterator(Context ctx, int windowType, QName var, TypeInfo t, XDMIterator seq, WindowVariable[] startVars, XDMIterator startExpr, WindowVariable[] endVars, XDMIterator endExpr, boolean forceEnd, boolean onNewStart, int orderMode, QueryLocation location)

Method Summary

void	setContext(Context context, boolean recursive) Assigns a context for this iterator (and possibly for its subIterators), replacing the existing context
void	setResettable(boolean r) Set this Iterator (and its subiterators) resetable.

Methods inherited from class ch.ethz.mxquery.iterators.forseq.ForseqWindowIterator

getAllSubIters, getForseqVars, getInnermostContext, traverseIteratorTree, updateVarHolders

Methods inherited from class ch.ethz.mxquery.iterators.forseq.ForseqIterator

copy, getForseqVariable, isParallelAccess, next, setParallelAccess

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

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

Methods inherited from class java.lang.Object

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

Constructor Detail

ForseqWindowNaiveIterator

public ForseqWindowNaiveIterator(Context ctx,
                                 int windowType,
                                 QName var,
                                 TypeInfo t,
                                 XDMIterator seq,
                                 WindowVariable[] startVars,
                                 XDMIterator startExpr,
                                 WindowVariable[] endVars,
                                 XDMIterator endExpr,
                                 boolean forceEnd,
                                 boolean onNewStart,
                                 int orderMode,
                                 QueryLocation location)
                          throws MXQueryException

Throws:

MXQueryException

Method Detail

setContext

public void setContext(Context context,
                       boolean recursive)
                throws MXQueryException

Description copied from interface: XDMIterator

Assigns a context for this iterator (and possibly for its subIterators), replacing the existing context

Specified by:

setContext in interface XDMIterator

Overrides:

setContext in class ForseqWindowIterator

Parameters:

context - the context to assign

recursive - true perform the assignment also subiteratos, false only replace on the current iterator

Throws:

MXQueryException

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 ForseqWindowIterator

Parameters:

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

Throws:

MXQueryException