Pi UdZddlmZddlZddlZddlZddlZddl Z ddl Z ddl Z ddl Z ddl mZmZmZmZddlmZddlmZmZmZmZmZmZmZmZddlmZddlm Z dd l!m"Z"m#Z#dd l$m%Z%m&Z&m'Z'm(Z(dd l)m*Z*m+Z+dd l,m-Z-m.Z.m/Z/m0Z0dd l1m2Z2m3Z3m4Z4m5Z5m6Z6m7Z7m8Z8ddl9m:Z:m;Z;ddZddZ?ddZ@ddZAddZBddZCddZDdd ZEdd!ZFdd"ZGdd#ZHdd$ZIdd%ZJdd&ZKdd'ZLdd(ZMdd)ZNdd*ZOdd+ZPdd,ZQdd-ZRdd.ZSdd/ZTdd3ZUdd4ZVdd5ZWdd6ZXdd7ZYdd8ZZdd9Z[dd:Z\dd<Z]dd=Z^dd>Z_dd?Z`dd@ZaddAZbddBZcddCZdddDZeddEZfddFZgddGZhddHZiddIZjddJZkddLZlddMZmddNZnddOZoee+e-ge6fZpiZqdPerdQ< dddYZs ddd[Zt ddd]Zudd_Zvete#jwd`aete#jxd`aete#jyd`aete#jzd`aete#j d`aete#j{d`aete#j|d`addbZ}ddcZ~dddZddeZddgZddhZddiZddjZddkZddlZddnZe+dodpZddrZddtZddvZddxZddyZwddzZdd{ZddZddZddZeddZeddZeddZddZddZdS)z This contains evaluation functions for expressions They get bound as instances-methods to the CompValue objects from parserutils using setEvalFn ) annotationsN)ROUND_HALF_DOWN ROUND_HALF_UPDecimalInvalidOperation)reduce)AnyCallableDictNoReturnOptionalTupleUnionoverload)quote) ParseResults)RDFXSD)XSD_DateTime_DTsXSD_DTsXSD_Duration_DTstype_promotion) CompValueExpr)FrozenBindings QueryContext SPARQLErrorSPARQLTypeError)BNodeIdentifiedNode IdentifierLiteralNodeURIRefVariable)Durationparse_datetimeexprrctxrreturnr$c|j}t|tr|St|tr'|jt|St d)z7 http://www.w3.org/TR/sparql11-query/#func-iri z6IRI function only accepts URIRefs or Literals/Strings!)arg isinstancer$r"prologue absolutizerr(r)as s/home/jaya/work/projects/VOICE-AGENT/VIET/agent-env/lib/python3.11/site-packages/rdflib/plugins/sparql/operators.py Builtin_IRIr33sa A!V!W2|&&vayy111 N O OOr"cPtt|jtSN)r"r-r,rr(r)s r2Builtin_isBLANKr8Ds :dh.. / //r4cPtt|jtSr6)r"r-r,r7s r2Builtin_isLITERALr:Hs :dh00 1 11r4cPtt|jtSr6)r"r-r,r$r7s r2 Builtin_isIRIr<Ls :dh// 0 00r4cv t|jtdS#tdcYSxYwNTF)numericr,r"r7s r2Builtin_isNUMERICr@Ps>t}}u~~s"%8rc|j}|tSt|tr |j|St d)z9 http://www.w3.org/TR/sparql11-query/#func-bnode Nz9BNode function only accepts no argument or literal/string)r,rr-r"bnodesrr0s r2 Builtin_BNODErCXsF Ayww!Wz!} Q R RRr4c^ttt|jS)z7 http://www.w3.org/TR/sparql11-query/#func-abs )r"absr?r,r7s r2 Builtin_ABSrFhs$ 3wtx(()) * **r4cFt|jr|jn|jS)z6 http://www.w3.org/TR/sparql11-query/#func-if )EBVarg1arg2arg3r7s r2 Builtin_IFrLps DI 5499DI5r4cBttjS)z9 http://www.w3.org/TR/sparql11-query/#idp2133952 )r"randomr7s r2 Builtin_RANDrOxs 6=?? # ##r4cLttjjS9 http://www.w3.org/TR/sparql11-query/#func-strdt )r$uuiduuid4urnr7s r2 Builtin_UUIDrVs $*,," # ##r4c\tttjSrQ)r"strrSrTr7s r2Builtin_STRUUIDrYs 3tz||$$ % %%r4ct|jd}tt j|SNutf-8)stringr,encoder"hashlibmd5 hexdigestr(r)ss r2 Builtin_MD5rdsAtx((A 7;q>>++-- . ..r4ct|jd}tt j|Sr[)r]r,r^r"r_sha1rarbs r2 Builtin_SHA1rgsAtx((A 7<??,,.. / //r4ct|jd}tt j|Sr[)r]r,r^r"r_sha256rarbs r2Builtin_SHA256rjCtx((A 7>!$$..00 1 11r4ct|jd}tt j|Sr[)r]r,r^r"r_sha384rarbs r2Builtin_SHA384rnrkr4ct|jd}tt j|Sr[)r]r,r^r"r_sha512rarbs r2Builtin_SHA512rqrkr4c|ddD]$}| t|ttfs|cS%td)z< http://www.w3.org/TR/sparql11-query/#func-coalesce r,T variablesNz;COALESCE got no arguments that did not evaluate to an error)getr-rr%)r(r)xs r2Builtin_COALESCErwsTXXetX , , =A X/F!G!G=HHH S T TTr4c |j}tttjt ||jS)z8 http://www.w3.org/TR/sparql11-query/#func-ceil datatype)r,r"intmathceilr?rzr(r)l_s r2 Builtin_CEILrs8 B 3ty--.. E E EEr4c |j}tttjt ||jS)z9 http://www.w3.org/TR/sparql11-query/#func-floor ry)r,r"r{r|floorr?rzr~s r2 Builtin_FLOORrs8 B 3tz'"++..//"+ F F FFr4c|j}t|}tt|d|dkrt nt }t||jS)z9 http://www.w3.org/TR/sparql11-query/#func-round rry) r,r?r{rquantizerrr"rz)r(r)rvs r2 Builtin_ROUNDrsZ B A GAJJ  AEE== O OPPA 1r{ + + ++r4c t|j}t|j}|j}d}|r\t dt jfdt jfdt jfgttj fd|D}ttt jt|||S)a* http://www.w3.org/TR/sparql11-query/#func-regex Invokes the XPath fn:matches function to match text against a regular expression pattern. The regular expression language is defined in XQuery 1.0 and XPath 2.0 Functions and Operators section 7.6.1 Regular Expression Syntax rircmc<g|]}|dSrru.0fflagMaps r2 z!Builtin_REGEX..'!C!C!C'++a"3"3!C!C!Cr4)r]textpatternflagsdictre IGNORECASEDOTALL MULTILINErpyopor_r"boolsearchrX)r(r)rrrcFlagrs @r2 Builtin_REGEXrs $)  DT\""G JE E Ebm,sBI.>bl@STUUtx!C!C!C!CU!C!C!CDD 4 #g,,e<<== > >>r4ct|j}t|j}t|j}|j}t jdd|}d}|r\tdt jfdt j fdt j fgttj fd|D}tt jt|||||j|jS) : http://www.w3.org/TR/sparql11-query/#func-substr z \$([0-9]*)z\\\1rrrcrc<g|]}|dSrrrs r2rz#Builtin_REPLACE..rr4rzlang)r]r,r replacementrrsubrrrrrrrr"rXrzlanguage)r(r)rrrrrrs @r2Builtin_REPLACErs $(  DT\""G)**K JE&==K E Ebm,sBI.>bl@STUUtx!C!C!C!CU!C!C!CDD  s7||[$66 ]   r4cRtt|j|jS)rRry)r"rXrIrJr7s r2 Builtin_STRDTrs! 3ty>>DI 6 6 66r4ct|j}|js|jrt dt t |t |jS)z; http://www.w3.org/TR/sparql11-query/#func-strlang z STRLANG expects a simple literal)r) r]rIrrzrr"rXrJlowerrbs r2Builtin_STRLANGrsd tyAz>QZ><=== 3q66DI 4 4 6 6 7 7 77r4ctd|jD}t|dkr|nd}td|jD}t|dkr|nd}t dd|jD||S)z: http://www.w3.org/TR/sparql11-query/#func-concat c3NK|] }t|t|jV!dSr6)r-r"rzrrvs r2 z!Builtin_CONCAT..$s3 D DAZ7-C-C DQZ D D D D D Dr4rNc3NK|] }t|t|jV!dSr6)r-r"rrs r2rz!Builtin_CONCAT..(s3FFaz!W/E/EFqzFFFFFFr4c34K|]}t|VdSr6)r]rs r2rz!Builtin_CONCAT../s(776!99777777r4r)setr,lenpopr"join)r(r)dtrs r2Builtin_CONCATrs D D D D D D DBWW\\tB FF48FFF F FDTa488:::TD 27777dh77777"4 P P PPr4r1bNonect|t||jr|j|jkrtddSdS)Nz'incompatible arguments to str functions)r]rr)r1rs r2_compatibleStringsr2sR 1III 1IIIzEajAJ..CDDDEE..r4c|j}|j}t||t||S)z= http://www.w3.org/TR/sparql11-query/#func-strstarts )rIrJrr" startswithr(r)r1rs r2Builtin_STRSTARTSr:s: A Aq! 1<<?? # ##r4c|j}|j}t||t||S)z; http://www.w3.org/TR/sparql11-query/#func-strends )rIrJrr"endswithrs r2Builtin_STRENDSrFs: A Aq! 1::a== ! !!r4c|j}|j}t||||}|dkrt dSt |d||j|jS)z= http://www.w3.org/TR/sparql11-query/#func-strbefore rNrrz)rIrJrfindr"rrzr(r)r1rrs r2Builtin_STRBEFORErRsg A Aq! q ABwwr{{q!u1: CCCCr4c|j}|j}t||||}|dkrt dSt ||t |zd|j|jS)z< http://www.w3.org/TR/sparql11-query/#func-strafter rrNr)rIrJrrr"rrrzrs r2Builtin_STRAFTERrbsq A Aq! q ABwwr{{qSVVQZ!*MMMMr4c`|j}|j}t||t||vS)z? http://www.w3.org/TR/sparql11-query/#func-strcontains )rIrJrr"rs r2Builtin_CONTAINSrrs2 A Aq! 16??r4cttt|jddS)Nr\r)safe)r"rr]r,r^r7s r2Builtin_ENCODE_FOR_URIr~s5 5))0099CCC D DDr4ct|j}t|jdz }|j}|t||z}t ||||j|jS)rrNr)r]r,r?startlengthr"rrz)r(r)r1rrs r2Builtin_SUBSTRrse txA DJ  ! #E [F 5( 1U6\?aj I I IIr4ecbt|j}tt|Sr6)r]r,r"rrr)rs r2Builtin_STRLENrs# B 3r77  r4cv|j}t|tr|tt |Sr6)r,r-rr"rX)rr)r,s r2 Builtin_STRrs4 %C#{## 3s88  r4ct|j}t||j|jSNr)r]r,r"rrzrrs r2 Builtin_LCASEr0 B 288:: "+ F F FFr4ct|j}t|j}t|dkrt dSt t ||S)zA http://www.w3.org/TR/sparql11-query/#func-langMatches rF)r]rIrJrXr"_lang_range_check)rr)langTag langRanges r2Builtin_LANGMATCHESrsT QVnnGqvI 7||ru~~ $Y88 9 99r4c*t|jS)z7 http://www.w3.org/TR/sparql11-query/#func-now )r"now)rr)s r2 Builtin_NOWrs 37  r4cRt|j}t|jSr6)dater,r"yearrr)ds r2 Builtin_YEARrs QU A 16??r4cRt|j}t|jSr6)rr,r"monthrs r2 Builtin_MONTHrs QU A 17  r4cRt|j}t|jSr6)rr,r"dayrs r2 Builtin_DAYrs QU A 15>>r4cRt|j}t|jSr6)datetimer,r"hourrs r2 Builtin_HOURSrsA 16??r4cRt|j}t|jSr6)rr,r"minuters r2Builtin_MINUTESrsA 18  r4ct|j}t|j}|jr'|t|jtdz z }t |t jS)z; http://www.w3.org/TR/sparql11-query/#func-seconds i@Bry)rr,rsecond microsecondr"rdecimal)rr)r result_values r2Builtin_SECONDSrsa A18$$L}B ..1A1AAA <#+ 6 6 66r4ct|j}|jstd|z|}|j}|j}d}|dkr d|z|z }d}d}|dz }||dzdzz dz }||dzdzz |dzz }|d|rd |zndd |rd |znd|rd |znd|s |s|sd |znd} t| tj S)z http://www.w3.org/TR/sparql11-query/#func-timezone Returns: The timezone part of arg as an xsd:dayTimeDuration. Raises: An error if there is no timezone. zdatatime has no timezone: %rrri-i<Pz%dDTz%dHz%dMz%dSry) rr,tzinfor utcoffsetdayssecondsr"rdayTimeDuration) rr)rdeltarrcneghrtzdeltas r2Builtin_TIMEZONErs- !%B 9?82=>>> LLNNE  A A C1uu A  !  W A QVb[BA AFRK!b& A  B B B616Q6 B6 G 7S%8 9 9 99r4ct|j}|jstdS|j|}|d}n(|dkrd}n|dr |dd}t|S)NrUTCZ)rr,r r"tznamer)rr)rns r2 Builtin_TZr sA 8r{{ Ay  e  e   abbE 1::r4ct|j}t||j|jSr)r]r,r"upperrzrrs r2 Builtin_UCASErrr4cVt|j}t|jpdS)zhttp://www.w3.org/TR/sparql11-query/#func-lang Returns the language tag of ltrl, if it has one. It returns "" if ltrl has no language tag. Note that the RDF data model does not include literals with an empty language tag. r)literalr,r"rrs r2 Builtin_LANGr s& B 2;$" % %%r4 Optional[str]c|j}t|tstd|z|jr t jS|js|js tj S|jS)Nz$Can only get datatype of literal: %r) r,r-r"rrr langStringrzrr]rs r2Builtin_DATATYPEr$*se B b' " "G@2EFFF {~ ;r{z ;r4cD|j}|j}t||kSr6)rIrJr")rr)r1rs r2Builtin_sameTermr&5s  A A 16??r4cv|dd}tt|t S)z9 http://www.w3.org/TR/sparql11-query/#func-bound r,Trs)rur"r-r%)rr)rs r2 Builtin_BOUNDr(;s4 et$$A z!X... / //r4cddlm}|jdk}|j|}|||jD]}t |cSt | S)Nr)evalPartBuiltin_EXISTS)rdflib.plugins.sparql.evaluater*namer)thawgraphr")rr)r*existsrvs r2r+r+Dsu777777 V' 'F ',,s  C Xc17 # #v v:  r4z*Dict[URIRef, Tuple[_CustomFunction, bool]]_CUSTOM_FUNCTIONSFurifunc_CustomFunctionoverriderrawc||s-|tvr$td|z||ft|<dS)aRegister a custom SPARQL function. By default, the function will be passed the RDF terms in the argument list. If raw is True, the function will be passed an Expression and a Context. The function must return an RDF term, or raise a SparqlError. z&A function is already registered as %sN)r1 ValueErrorn3)r2r3r5r6s r2register_custom_functionr:WsI N000ACFFHHLMMM"C[cr4,Callable[[_CustomFunction], _CustomFunction]cdfd }|S)z@ Decorator version of :func:`register_custom_function`. r3r4r*c.t||S)N)r5r6)r:)r3r5r6r2s r2 decoratorz"custom_function..decoratorms dX3GGGG r4)r3r4r*r4)r2r5r6r>s``` r2custom_functionr@fs5 r4Optional[Callable[..., Any]]ct|r t|=dStjd|zdS)a The 'func' argument is included for compatibility with existing code. A previous implementation checked that the function associated with the given uri was actually 'func', but this is not necessary as the uri should uniquely identify the function. z%This function is not registered as %sN)r1ruwarningswarnr9)r2r3s r2unregister_custom_functionrEtsMS!!J c " " " =HIIIIIr4r#ct|j}|td|jz|\}}|r |||S ||jS#t $r}t|jd}~wwxYw)z$ Custom functions and casts NzUnknown function %r)r1ruirirr( TypeErrorargs)rr)pairr3r6exs r2FunctionrLs   ' 'D |/!%7888ID# (tAs|| (4=  ( ( (rw' ' (s A A4!A//A4T)r6c|jstdt|jdkrtd|jd}|jtjkrYt |ttfrt|tjStd|dt|t |tstd|j r%|j tvrtd |j z|jtj krx|j r6|j tj tjfvrtd |j z tt||jS#td |zxYw|j tj krtd |jz|jtjtjfvr; tt||jS#td |zxYw|jtjkrUd|vsd|vrtd|z tt#||jS#td|zxYw|jtjkr@ tt'|tjS#td|zxYw|jtjkr\|dvrtdS|dvrtdStd|zdS)NzNothing given to cast.rz Cannot cast more than one thing!rryzCannot cast term z of type z/Can only cast Literals to non-string data-typesz-Cannot cast literal with unknown datatype: %rzCannot cast %r to XSD:dateTimez!Cannot interpret '%r' as datetimezCannot cast XSD.dateTime to %rzCannot interpret '%r' as floatrEz Cannot interpret '%r' as decimalzCannot interpret '%r' as int)1trueT)0falseFzCannot interpret '%r' as bool)r(rrrGrr]r-r$r"typerzrdateTimer'floatdoublerrintegerr{booleanr)rr)rvs r2 default_castrYs  642333 16{{Q<=== q Au  a&'* + + O1sz222 2+!!!T!WWWMNN N a ! !MKLLLzX!*//IAJVWWWu  : M!*S\3:,FFF>KLL L G>!,,qu=== = GAAEFF FzS\!!:QUBCCCuCJ''' D588ae444 4 D>BCC C #+   !88saxx@1DEE E F71::666 6 F@1DEE E #+   B3q66CK888 8 B> !9A=>>>  s0"E??F""HH "I//J'KKcFtt|j Sr6)r"rHr(r7s r2UnaryNotr[s s49~~% & &&r4cFtt|j Sr6r"r?r(r7s r2 UnaryMinusr^ GDI&&& ' ''r4cFtt|j Sr6r]r7s r2 UnaryPlusrar_r4#Union[QueryContext, FrozenBindings]c|j}|j}||S tt|}t |j|D]L\}}t|}t |tkrt|}|dkr||z}G||z}Mn$#ttf$rtdwxYwt|S)N*z divide by 0) r(otherrr?zipoprSrUrZeroDivisionErrorrr")rr)r(reresrgrs r2MultiplicativeExpressionrjs 6D GE } )gdmm$$u%%  EB AAww%CjjSyyqq  / 0)))-((() 3<<s A>B!B4c|j}|j}||St|drQ|jtvs|jt vr4t |}|j}t|j|D]\}}|tvr^||jkrS|dkrMt|dkrd}t||jt |} t|| }|cS|tvr9|jt vr+t |} t||| |j|}|cS|t vr@|jtvr2|dkr+t |} t||| |j|}|cStddSt|}|j}t|j|D]\}}t|} t| tr$t|t rt!| } t| t r$t|trt!|}t#||j}|dkr|| z }|| z}t%||S)Nrzrrz$Can't evaluate multiple %r arguments+zInvalid DateTime Operationsry)r(rehasattrrzrrdateTimeObjectsrfrgrrcalculateDurationcalculateFinalDateTimer?r-rrUrr") rr)r(rerirrgterm error_messagers r2AdditiveExpressionrss 6D GE } tZ  ;) )))T]>N-N-Nd## ]AD%(( A AHB%%%" *=*="))u::>>$JM%mR[AAA'--A+C33CJJJ'''DM=M,M,M#D)),S"aKK '''DM=M,M,M99'--A0b!T]BOOCJJJ""?@@@? A AFdmm ]AD%((  HB A!W%% *S%*@*@ !HH!U## ! 3(@(@ !CjjDM22BSyyqqsR((((r4c H|j}|j}|j}||Stddfddfddfddfd d fd d fd tjfddfg}|dvri|dk}d}|t jkrg}|D]6} ||krtd|z cS#t$r }|}Yd}~/d}~wwxYw|std|z S||dvrOt|tstd|zt|tstd|znNt|tstd|zt|tstd|zt|trRt|tr=|j 6|j tvr(|j !|j tvr|dvrtd ||||} | tkrtdn #t$r} t| jd} ~ wwxYwt| S)N>c,||Sr6)__gt__rvys r2z&RelationalExpression..]qxx{{r4.^r{r4=c,||Sr6)eqrxs r2rzz&RelationalExpression.._sqttAwwr4!=c,||Sr6)neqrxs r2rzz&RelationalExpression..`sar4z>=c,||Sr6)__ge__rxs r2rzz&RelationalExpression..a r4z<=c,||Sr6)__le__rxs r2rzz&RelationalExpression..brr4INNOT INc.tj|| Sr6)rcontainsrxs r2rzz&RelationalExpression..ds a(;(;$;r4)rrFT)rrrrz8Compare other than =, != of non-literals is an error: %rz"I cannot compare this non-node: %r)rrz0Can only do =,!= comparisons of non-XSD LiteralszError when comparing)r(rergrrrrnilr"rr-r#rzrNotImplementedrHrI) rr)r(rergopsrierrorrvrtes r2RelationalExpressionrQs 6D GE B }  ** + ** + && ' (( ) ++ , ++ , 4= ! ;; <   C Hn*/ CG  E  A 99"4#:.....     53;'' 'K ,,,$(( JTQ %)) JUR   $%% KBTIJJ J%&& LBUJKK K$  VZw%?%? V M % W,,*g--$$!"TUUU$ CGD%    455 5  $$$27##$ 1::s05B B&B!!B&,G55 H?H  Hcz|j}|j}||Sttd|g|zDS)Nc34K|]}t|VdSr6)rHrs r2rz+ConditionalAndExpression..s(66!s1vv666666r4)r(rer"all)rr)r(res r2ConditionalAndExpressionrsI 6D GE } 366v~66666 7 77r4c|j}|j}||Sd}|g|zD]<} t|rtdcS$#t$r }|}Yd}~5d}~wwxYw|r|tdSr>)r(rerHr"r)rr)r(rerrvs r2ConditionalOrExpressionrs 6D GE }  EVe^ 1vv %t}}$$$ %   EEEEEE   5>>s? A AAc0tdt|S)Nr[r()rr[)r,s r2not_rs  H3 / / //r4rIc t|dkr|dStdt|dt|ddS)Nrrr)r(re)rrrlist)rIs r2and_rsO 4yyA~~Aw " !W48nn    r4 TrueFilterc tdS)NT)r")_1_2s r2rzrzs wt}}r4r ct|tr(t|dkrt|dSt|ttfr"t t t|St|t s|S|jdr|j t|j S| D]}t||||<|S)Nrr Expression) r-rrsimplifyrmaprr-rrer(keys)r(ks r2rrs$ %%!#d))q..Q   $|,--)C$''((( dI & &  y,''' : DI&& & YY[[$$47##Q Kr4rccTt|tstd|z|S)Nz Non-literal passed as string: %r)r-r"rrcs r2rrs. a ! !BBCCC : % %NQRRSSS ::<<r4py_datetime.datec:t|tstd|z|jtjtjfvrtd|z|}t|tj r|S|S)NzNon-literal passed as date: %rz.Literal with wrong datatype passed as date: %r) r-r"rrzrrrTr py_datetimer)rresults r2rrs a ! !@:Q>???z#(CL111JQNOOO ZZ\\F&+.//{{}} Mr4ct|tstd|z|jr'|jtjkrtd|z|S)zz Make sure the passed thing is a string literal i.e. plain literal, xsd:string literal or lang-tagged literal z Non-literal passes as string: %rz0Non-string datatype-literal passes as string: %r)r-r"rrzrr]rs r2r]r] s] a ! !B+>c$iiut ch #' ' '5 C' ' '3#,+>+>c$iil""tu cltr4cJ|}|}||z }t|tjS)z; returns the duration Literal between two datetime ry)r"rduration)rrdate1date2 differences r2rorogs, E EJ : 5 5 55r4 operationrXct||||r2|dkr||z }t||S||z}t||Std)z Calculates the final dateTime/date/time resultant after addition/ subtraction of duration/dayTimeDuration/yearMonthDuration rryz.Incompatible Data types to DateTime Operations)rr"r)rrrrranss r2rprpuso$D#tS99 L   +C3--- -+C3--- -JKKKr4rtcdSr6r?rs r2rHrHs!cr42Union[Variable, IdentifiedNode, SPARQLError, Expr]r cdSr6r?rs r2rHrHsMPSr4$Union[Identifier, SPARQLError, Expr]Union[bool, NoReturn]cdSr6r?rs r2rHrHsLOCr4ct|tr|jtjkr|S|jtjks|jt|dkS|}t|trtd|zt|Std|z)a}Effective Boolean Value (EBV) * If the argument is a typed literal with a datatype of xsd:boolean, the EBV is the value of that argument. * If the argument is a plain literal or a typed literal with a datatype of xsd:string, the EBV is false if the operand value has zero length; otherwise the EBV is true. * If the argument is a numeric type or a typed literal with a datatype derived from a numeric type, the EBV is false if the operand value is NaN or is numerically equal to zero; otherwise the EBV is true. * All other arguments, including unbound arguments, produce a type error. Nrzjhttp://www.w3.org/TR/rdf-sparql-query/#ebv - ' + 'Could not determine the EBV for : %rzchttp://www.w3.org/TR/rdf-sparql-query/#ebv - ' + 'Only literals have Boolean values! %r) r-r"rzrrXrr]rrr)rpyRTs r2rHrHs"g ;#+ % %;;== [CJ & &"+*=r77Q; ;;==D$(( "%; Dzz! 4    r4rangercd d|d}|d}|d|dsd St|t|krd St fd t ||DS) a Implementation of the extended filtering algorithm, as defined in point 3.3.2, of [RFC 4647](http://www.rfc-editor.org/rfc/rfc4647.txt), on matching language ranges and language tags. Needed to handle the `rdf:PlainLiteral` datatype. Args: range: language range lang: language tag Author: [Ivan Herman](http://www.w3.org/People/Ivan/) Taken from [`RDFClosure/RestrictedDatatype.py`](http://dev.w3.org/2004/PythonLib-IH/RDFClosure/RestrictedDatatype.py) rrXrr*rc|dkp||kS)z Matching of a range and language item: either range is a wildcard or the two are equal Args: r: language range item l_: language tag item rdr?)rrs r2_matchz!_lang_range_check.._matchsCx"17"r4rrFc3"K|] }|V dSr6r?)rrvrs r2rz$_lang_range_check..s)<rs #"""""  MMMMMMMMMMMMRRRRRRRRRRRRRRRRRRRR""""""%%%%%%%% >======= 98888888PPPP"000022221111 S S S S ++++6666$$$$$$$$&&&&//// 0000 2222 2222 2222 UUUUFFFFGGGG , , , ,????.:7777 8 8 8 8QQQQ*EEEE $ $ $ $ " " " " D D D D N N N N    EEEE J J J J  GGGG : : : :     7777':':':':T    GGGG & & & & 0000    D.1478@BBBBBMR ) ) ) ) ) 6;     7; J J J J J((((*&&&4(((%%%&&&$'''$'''$'''<?<?<?('('(''&&%)('&<?~''''((((((((