ch.ethz.mxquery.iterators
Class PFFLWORIterator

java.lang.Object
  ch.ethz.mxquery.model.Iterator
      ch.ethz.mxquery.model.CurrentBasedIterator
          ch.ethz.mxquery.iterators.FFLWORIterator
              ch.ethz.mxquery.iterators.PFFLWORIterator

All Implemented Interfaces:

XDMIterator, Traversable

public class PFFLWORIterator
extends FFLWORIterator

Nested Class Summary

Nested classes/interfaces inherited from class ch.ethz.mxquery.iterators.FFLWORIterator

FFLWORIterator.CFAdapter

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

PFFLWORIterator(Context ctx, XDMIterator[] subIters, XDMIterator whereExpr, OrderByIterator orderByExpr, XDMIterator returnExpr, QueryLocation location)

Method Summary

void	init()
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.

Methods inherited from class ch.ethz.mxquery.iterators.FFLWORIterator

copy, doNextBinding, getAllSubIters, getOrderByExpr, getReturnExpr, getStaticType, getSubIters, getWhereExpr, setContext, setOrderByExpr, setResettable, setReturnExpr, setWhereExpr, traverseIteratorTree

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

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

Methods inherited from class java.lang.Object

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

Constructor Detail

PFFLWORIterator

public PFFLWORIterator(Context ctx,
                       XDMIterator[] subIters,
                       XDMIterator whereExpr,
                       OrderByIterator orderByExpr,
                       XDMIterator returnExpr,
                       QueryLocation location)
                throws MXQueryException

Throws:

MXQueryException

Method Detail

init

public void init()
          throws MXQueryException

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.

Specified by:

next in interface XDMIterator

Overrides:

next in class FFLWORIterator

Returns:

The XDM token representing the next fragment of the XDM instance

Throws:

MXQueryException