Package org.basex.query.func.fn

Class NumericFn

java.lang.Object

org.basex.query.expr.ExprInfo

org.basex.query.expr.Expr

org.basex.query.expr.ParseExpr

org.basex.query.expr.Arr

org.basex.query.func.StandardFunc

org.basex.query.func.fn.NumericFn

Direct Known Subclasses:

FnAbs, FnCeiling, FnFloor, FnRound, FnSum

public abstract class NumericFn
extends StandardFunc

Numeric function.

Author:

BaseX Team 2005-24, BSD License, Christian Gruen

Field Summary

Fields inherited from class org.basex.query.func.StandardFunc

definition

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

exprs

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

exprType, info

Constructor Summary

Constructors

Constructor	Description
NumericFn()

Method Summary

Modifier and Type	Method	Description
protected Expr	opt(CompileContext cc)	Performs function-specific optimizations.
protected static SeqType	optType(Expr expr, boolean normalize)	Returns a numeric type for the specified type.

Methods inherited from class org.basex.query.func.StandardFunc

arity, checkPerm, coerce, coerce, compileData, copy, dataLock, defined, description, embed, equals, has, hasCTX, hasUPD, hofIndex, optFirst, optFirst, optimize, refineFunc, serialize, simplifyArgs, toBaseUri, toBindings, toBoolean, toCollation, toCollation, toContent, toContent, toData, toDate, toDBNode, toEncodingOrNull, toEncodingOrNull, toFunction, toFunction, toFunctionOrNull, toIO, toIO, toMs, toName, toNodeOrAtomItem, toOptions, toOptions, toPath, toPath, toStr, toString, toXml, toZeroStr, vacuous, variadic

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

accept, allAreValues, arg, args, checkUp, compile, copyAll, count, exprSize, flatten, inline, inlineable, mayBePositional, removeEmpty, simplifyAll

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

adoptType, atomValue, checkAllUp, checkNoneUp, checkNoUp, checkType, checkType, checkUp, copyType, ctxValue, data, info, item, iter, refineType, sc, seqType, size, test, toArray, toArray, toAtomItem, toBin, toBin, toBinOrNull, toBoolean, toBoolean, toBooleanOrFalse, toBytes, toBytes, toDouble, toDouble, toElem, toElem, toEnum, toFloat, toFunction, toLong, toLong, toLong, toMap, toMap, toNode, toNode, toNodeOrNull, toNumber, toNumber, toNumberOrNull, toQNm, toQNmOrNull, toRecord, toString, toString, toStringOrNull, toToken, toToken, toTokenOrNull, toZeroToken, value

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

arg, atomItem, atomIter, ddo, funcType, hasFreeVars, indexAccessible, info, isSimple, markTailCalls, mergeEbv, optimizePos, simplify, simplifyFor, typeCheck, uses, visitAll

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

toErrorString, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

NumericFn

public NumericFn()

Method Detail

opt

protected Expr opt(CompileContext cc)
            throws QueryException

Description copied from class: StandardFunc

Performs function-specific optimizations.

Overrides:

opt in class StandardFunc

Parameters:

cc - compilation context

Returns:

optimized or original expression

Throws:

QueryException - query exception

optType

protected static final SeqType optType(Expr expr,
                                       boolean normalize)

Returns a numeric type for the specified type.

Parameters:

expr - expression

normalize - use xs:integer for integer subtypes

Returns:

sequence type or null