Re: [rules-dev] Declared types - extension

https://issues.jboss.org/browse/JBRULES-3133 created. On 12 July 2011 13:08, Michael Anstis <michael.anstis(a)gmail.com&gt; wrote: > There's also a quirk regarding the class resolution:- > > Given Person class:- > > package com.guvnor.domain; > > import java.math.BigDecimal; > > public class Person { > > private BigDecimal salary; > > public BigDecimal getSalary() { > return salary; > } > > public void setSalary(BigDecimal salary) { > this.salary = salary; > } > > } > > > The following compiles OK:- > > package com.sample > > import com.guvnor.domain.Person > > declare Person > end > > However the following does not (without explicitly importing > java.math.BigDecimal - which is a field type in Person):- > > package com.sample > > import com.guvnor.domain.Person > import com.guvnor.domain.Address > > declare Person > end > > declare Person2 extends Person > flange : String > end > > Error being "Unknown DroolsError class > org.drools.compiler.TypeDeclarationError: Unable to find class 'BigDecimal' > ". > > With kind regards, > > Mike > > > On 11 July 2011 08:41, Wolfgang Laun <wolfgang.laun(a)gmail.com&gt; wrote: > >> Subsection 5.7.7 discusses 'extends' and describes how it is done for >> types declared in Java. >> >> One finesse is apparently not documented: Java types must be proper >> JavaBeans; otherwise the construction of the accessors will fail. (Try, for >> instance, a property with a getter but no matching setter.) >> >> HTH >> -W >> >> >> On 10 July 2011 22:29, Michael Anstis <michael.anstis(a)gmail.com&gt; wrote: >> >>> What's the rules around declared types extending another (declared) >>> type? >>> >>> I've been asked to provide for declared type extension in Guvnor (by >>> Prakash) but the Expert user-guide doesn't say it exists at the engine >>> level. >>> >>> I tried "declare MyType extends java.util.ArrayList" and received a >>> parser\compiler error stating "java.util.ArrayList was not a declared type" >>> (or words to that effect) so some form of extension appears possible. >>> >>> Thanks, >>> >>> Mike >>> >>> _______________________________________________ >>> rules-dev mailing list >>> rules-dev(a)lists.jboss.org >>> https://lists.jboss.org/mailman/listinfo/rules-dev >>> >>> >> >> _______________________________________________ >> rules-dev mailing list >> rules-dev(a)lists.jboss.org >> https://lists.jboss.org/mailman/listinfo/rules-dev >> >> >