public final class FnDocAvailable extends StandardFunc
sc, sig
Constructor and Description |
---|
FnDocAvailable() |
Modifier and Type | Method and Description |
---|---|
boolean |
accept(ASTVisitor visitor)
Traverses this expression, notifying the visitor of declared and used variables,
and checking the tree for other recursive properties.
|
Item |
item(QueryContext qc,
InputInfo ii)
Evaluates the expression and returns the resulting item,
or a
null reference if the expression yields an empty sequence. |
arg, cache, checkAdmin, checkArity, checkCreate, checkData, checkPath, compile, copy, dataLock, dateTimeToMs, description, has, isFunction, isVacuous, oneOf, opt, optimize, plan, sameAs, serialize, toBindings, toCollation, toDBNode, toEncoding, toOptions, toPath, toString
allAreValues, checkUp, copyAll, count, exprSize, inline, oneIsEmpty, removable, toString
atomItem, atomValue, checkAtomic, checkNoEmpty, checkNoEmpty, checkNoneUp, checkNoUp, checkType, compBln, copyType, ctxValue, ebv, iter, optPre, optPre, preEval, seqType, seqType, size, test, toArray, toArray, toAtomItem, toB64, toB64, toBin, toBin, toBoolean, toBoolean, toBytes, toBytes, toDouble, toDouble, toElem, toEmptyNode, toEmptyToken, toFloat, toFunc, toItem, toLong, toLong, toMap, toMap, toNode, toNode, toNumber, toQNm, toQNm, toToken, toToken, value
atomIter, data, hasFreeVars, indexAccessible, inlineAll, isEmpty, isValue, iterable, markTailCalls, optimizeEbv, typeCheck, uses, visitAll
public Item item(QueryContext qc, InputInfo ii) throws QueryException
Expr
null
reference if the expression yields an empty sequence.
If this method is not overwritten, Expr.iter(QueryContext)
must be implemented by an
expression, as it may be called by this method.item
in class ParseExpr
qc
- query contextii
- input infonull
QueryException
- query exceptionpublic final boolean accept(ASTVisitor visitor)
Expr
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