Module org.apache.jena.arq
Package org.apache.jena.sparql.function

Interface Function

All Known Implementing Classes:
bnode, cartesian, collation, context, cos, cos1, cosec, cosec1, cot, cot1, cube, date, degreesToRadians, e, e, eval, evenInteger, execTime, factorial, FN_Abs, FN_AdjustDatetimeToTimezone, FN_AdjustDateToTimezone, FN_AdjustTimeToTimezone, FN_Apply, FN_BEV, FN_Ceiling, FN_CollationKey, FN_DateTime, FN_DayFromDate, FN_DayFromDateTime, FN_DaysFromDuration, FN_Error, FN_Floor, FN_FormatNumber, FN_HoursFromDateTime, FN_HoursFromDuration, FN_HoursFromTime, FN_Matches, FN_MinutesFromDateTime, FN_MinutesFromDuration, FN_MinutesFromTime, FN_MonthFromDate, FN_MonthFromDateTime, FN_MonthsFromDuration, FN_Not, FN_Round, FN_Round_Half_Even, FN_SecondsFromDateTime, FN_SecondsFromDuration, FN_SecondsFromTime, FN_StrAfter, FN_StrBefore, FN_StrConcat, FN_StrContains, FN_StrEncodeForURI, FN_StrEndsWith, FN_StrLength, FN_StrLowerCase, FN_StrNormalizeSpace, FN_StrNormalizeUnicode, FN_StrReplace, FN_StrStartsWith, FN_StrSubstring, FN_StrUpperCase, FN_Timezone, FN_TimezoneFromDate, FN_TimezoneFromDateTime, FN_TimezoneFromTime, FN_YearFromDate, FN_YearFromDateTime, FN_YearsFromDuration, FunctionBase, FunctionBase0, FunctionBase1, FunctionBase2, FunctionBase3, FunctionBase4, FunctionBase5, FunctionCastXSD, IsTripleTerm, langeq, ln, localname, log, Math_atan2, Math_exp, Math_exp10, Math_log, Math_log10, Math_pow, max, md5hash, min, namespace, now, nowtz, Op_NumericIntegerDivide, Op_NumericMod, pi, pow, print, pythagoras, radiansToDegrees, reciprocal, rnd, root, ScriptFunction, sec, sec1, sha1sum, sha256hash, sin, sin1, sprintf, sq, sqrt, sqrt, strjoin, strlen, struuid, substr, substring, SystemVar, tan, tan1, ten, timezone, TripleObject, TriplePredicate, TripleSubject, TripleTerm, UserDefinedFunction, uuid, wait
public interface Function
Interface to value-testing extensions to the expression evaluator.

  • Method Summary

    Modifier and Type
    Method
    Description
    void
    build(String uri, ExprList args)
    Called during query plan construction immediately after the construction of the extension instance.
    NodeValue
    exec(Binding binding, ExprList args, String uri, FunctionEnv env)
    Test a list of values - argument will not be null but may have the wrong number of arguments.

  • Method Details

    • build

      void build(String uri, ExprList args)
      Called during query plan construction immediately after the construction of the extension instance. Can throw ExprBuildException if something is wrong (like wrong number of arguments).
      Parameters:
      args - The parsed arguments

    • exec

      NodeValue exec(Binding binding, ExprList args, String uri, FunctionEnv env)
      Test a list of values - argument will not be null but may have the wrong number of arguments. FunctionBase provides a more convenient way to implement a function. Can throw ExprEvalsException if something goes wrong.
      Parameters:
      binding - The current solution
      args - A list of unevaluated expressions
      uri - The name of this
      env - The execution context
      Returns:
      NodeValue - a value