Package org.basex.query.expr.path

Class IterPath

java.lang.Object

org.basex.query.expr.ExprInfo

org.basex.query.expr.Expr

org.basex.query.expr.ParseExpr

org.basex.query.expr.path.Path

org.basex.query.expr.path.AxisPath

org.basex.query.expr.path.IterPath

public final class IterPath
extends AxisPath

Iterative expression for paths that return nodes in distinct document order.

Author:

BaseX Team 2005-21, BSD License, Christian Gruen

Field Summary

Fields inherited from class org.basex.query.expr.path.Path

data, root, steps

Fields inherited from class org.basex.query.expr.ParseExpr

exprType, info

Method Summary

Modifier and Type	Method	Description
IterPath	copy(CompileContext cc, IntObjMap<Var> vm)	Copies an expression.
protected Iter	iterator(QueryContext qc)	Returns a node iterator.
protected Value	nodes(QueryContext qc)	Returns a node sequence.

Methods inherited from class org.basex.query.expr.path.AxisPath

addPredicates, data, data, ddo, iter, mergeEbv, step, value

Methods inherited from class org.basex.query.expr.path.Path

accept, checkUp, compile, count, equals, exprSize, get, get, has, inline, inlineable, optimize, pathNodes, plan, plan, simple, simplifyFor

Methods inherited from class org.basex.query.expr.ParseExpr

adoptType, atomValue, checkAllUp, checkNoEmpty, checkNoEmpty, checkNoneUp, checkNoUp, checkType, checkType, checkUp, copyType, ctxValue, ebv, item, refineType, seqType, size, test, toArray, toArray, toAtomItem, toB64, toB64, toBin, toBin, toBoolean, toBoolean, toBytes, toBytes, toDouble, toDouble, toElem, toFloat, toFunc, toItem, toItem, toLong, toLong, toMap, toMap, toNode, toNode, toNodeOrNull, toNumber, toNumberOrNull, toQNm, toQNm, toToken, toToken, toTokenOrNull, toZeroToken

Methods inherited from class org.basex.query.expr.Expr

arg, args, atomItem, atomIter, funcType, hasFreeVars, indexAccessible, isSimple, markTailCalls, typeCheck, uses, vacuous, visitAll

Methods inherited from class org.basex.query.expr.ExprInfo

description, toErrorString, toString

Methods inherited from class java.lang.Object

clone, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Method Details

iterator

protected Iter iterator(QueryContext qc)

Description copied from class: AxisPath

Returns a node iterator.

Specified by:

iterator in class AxisPath

Parameters:

qc - query context

Returns:

iterator

nodes

protected Value nodes(QueryContext qc)
               throws QueryException

Description copied from class: AxisPath

Returns a node sequence.

Specified by:

nodes in class AxisPath

Parameters:

qc - query context

Returns:

iterator

Throws:

QueryException - query exception

copy

public IterPath copy(CompileContext cc,
 IntObjMap<Var> vm)

Description copied from class: Expr

Copies an expression. Used for inlining functions, or for copying static queries. It is utilized by VarRef.inline(org.basex.query.InlineContext), FuncItem.inline(org.basex.query.expr.Expr[], org.basex.query.CompileContext), Closure.inline(org.basex.query.InlineContext) and StaticFunc.inline(org.basex.query.expr.Expr[], org.basex.query.CompileContext).

Specified by:

copy in class Expr

Parameters:

cc - compilation context

vm - mapping from old variable IDs to new variable copies. Required by Closure.copy(org.basex.query.CompileContext, org.basex.util.hash.IntObjMap<org.basex.query.var.Var>) and VarRef.copy(org.basex.query.CompileContext, org.basex.util.hash.IntObjMap<org.basex.query.var.Var>)

Returns:

copied expression