ch.ethz.mxquery.iterators
Class AdditiveIterator

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

All Implemented Interfaces:

XDMIterator, Traversable

public class AdditiveIterator
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

AdditiveIterator(Context ctx, java.lang.String[] c, XDMIterator[] subIters, QueryLocation location)
Constructor for the AdditiveIterator

Method Summary

TypeInfo	getStaticType() Return the return type if it can be statically determined
void	setParam(java.lang.String name, java.lang.String value)

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, getSubIters, hasPredicates, isConstModePreserve, isExprParameter, isOpen, isResettable, removePredicates, reset, setConstModePreserve, setContext, setLoc, setOrderByExpr, 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

AdditiveIterator

public AdditiveIterator(Context ctx,
                        java.lang.String[] c,
                        XDMIterator[] subIters,
                        QueryLocation location)
                 throws MXQueryException

Constructor for the AdditiveIterator

Parameters:

c - Array of connectors (+ | -)

subIters - Array of Expressions, which are connected with the connectors in c

Throws:

MXQueryException

Method Detail

setParam

public void setParam(java.lang.String name,
                     java.lang.String value)

Overrides:

setParam in class Iterator

getStaticType

public TypeInfo getStaticType()

Description copied from interface: XDMIterator

Return the return type if it can be statically determined

Specified by:

getStaticType in interface XDMIterator

Overrides:

getStaticType in class Iterator

Returns:

a Type info carrying the most precise static type that could be determined. If no specific type could be determined, the type is ITEM*