Great - but why "custom:". Can we not use "math:"?? On Wed, Oct 15, 2014 at 5:34 PM, Lahiru Cooray <[email protected]> wrote:
> Hi, > > We have implemented below Math operations (all the Math operations available > in Hive) as extensions to Siddhi engine. > > round(DOUBLE a)round(DOUBLE a, INT d)floor(DOUBLE a)ceil(DOUBLE a), > ceiling(DOUBLE a)rand(), rand(INT seed)exp(DOUBLE a), exp(DECIMAL a)ln(DOUBLE > a), ln(DECIMAL a)log10(DOUBLE a), log10(DECIMAL a)log2(DOUBLE a), > log2(DECIMAL a)log(DOUBLE base, DOUBLE a) > log(DECIMAL base, DECIMAL a)pow(DOUBLE a, DOUBLE p), power(DOUBLE a, > DOUBLE p)sqrt(DOUBLE a), sqrt(DECIMAL a)bin(BIGINT a)hex(BIGINT a) > hex(STRING a) hex(BINARY a)unhex(STRING a)conv(BIGINT num, INT from_base, > INT to_base), conv(STRING num, INT from_base, INT to_base)abs(DOUBLE > a)pmod(INT > a, INT b), pmod(DOUBLE a, DOUBLE b)sin(DOUBLE a), sin(DECIMAL a)asin(DOUBLE > a), asin(DECIMAL a)cos(DOUBLE a), cos(DECIMAL a)acos(DOUBLE a), > acos(DECIMAL a)tan(DOUBLE a), tan(DECIMAL a)atan(DOUBLE a), atan(DECIMAL > a)degrees(DOUBLE a), degrees(DECIMAL a)radians(DOUBLE a), radians(DOUBLE > a)positive(INT a), positive(DOUBLE a)negative(INT a), negative(DOUBLE > a)sign(DOUBLE > a), sign(DECIMAL a)e()pi() > > > Eg:You can use the operations as below: > > *from InStreamSample1* > *select custom:pi()* > *insert into OutStreamSample1;* > > *from InStreamSample1* > *select custom:tan(parameter1)* > *insert into OutStreamSample1;* > > *from InStreamSample1* > *select custom:pmod(parameter1,parameter2)* > *insert into OutStreamSample1;* > > > We used built-in math operations available in java.lang.Math package and > we have implemented the operations which are not available in the > mentioned package (eg: pmod, positive,negative,unhex etc). > Separate classes were created for each math operation/extension and custom > function names are as same as the operation names in java.lang.Math. > > Appreciate if someone could point out if there are any other > missing/needed operations or any improvements regarding this.. > > > Thanks, > -- > *Lahiru Cooray* > Software Engineer > WSO2, Inc.;http://wso2.com/ > lean.enterprise.middleware > > Mobile: +94 715 654154 > > _______________________________________________ > Architecture mailing list > [email protected] > https://mail.wso2.org/cgi-bin/mailman/listinfo/architecture > > -- Sanjiva Weerawarana, Ph.D. Founder, Chairman & CEO; WSO2, Inc.; http://wso2.com/ email: [email protected]; office: (+1 650 745 4499 | +94 11 214 5345) x5700; cell: +94 77 787 6880 | +1 408 466 5099; voip: +1 650 265 8311 blog: http://sanjiva.weerawarana.org/; twitter: @sanjiva Lean . Enterprise . Middleware
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