Use String Functions into a BigDecimal Expression

[stpa...@maggioli.it]

Hi,


Is there a way to use BigDecimal and String function in the same
expression?

For example with this dummy expression:
if("a"=="b", 10*0.9, 2*0.88)

i have this error:

com.singularsys.jep.functions.IllegalParameterException: ==: lllegal
parameter a(String) expected BigDecimal parameter no 0

My java code is:

Jep jep=new Jep(new BigDecComponents(MathContext.DECIMAL128));
jep.setComponent(new StringFunctionSet());
jep.parse(expression);
ret=jep.evaluate();

Thanks
Stefano

[Richard Morris]

Dear Stefano,

Sorry for the delayed reply.

Facilities for using BigDecimals with strings were made available with
Jep 3.3.

The big decimal components has a constructor which allows strings
BigDecComponents(MathContext mc, boolean allowStrings)
if the second argument is true then a limited number of string
operations are possible. Strings can be added with + and compared with
=,> etc. No string functions are loaded by default but you could add
functions which operate on string with jep.addFunction().

Rich

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[stpa...@maggioli.it]

Thank's for your reply.

I have a trial version (3.3.0) for evaluate this product but there
isn't a constructor BigDecComponents(MathContext mc, boolean
allowStrings). This constructor there isn't in javadoc documentation.

Thank's.

Bye Stefano

> > For more options, visit this group athttp://groups.google.com/group/jep-users?hl=en.

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> Web:www.singsurf.orgwww.pfaf.org

> Email: r...@singsurf.org