Package org.drools.lang.descr

Examples of org.drools.lang.descr.EvalDescr

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     */
    public RuleConditionElement build(final RuleBuildContext context,
                                      final BaseDescr descr,
                                      final Pattern prefixPattern) {
        // it must be an EvalDescr
        final EvalDescr evalDescr = (EvalDescr) descr;

        final String className = "eval" + context.getNextId();

        evalDescr.setClassMethodName( className );

        Dialect.AnalysisResult analysis = context.getDialect().analyzeExpression( context,
                                                                                  evalDescr,
                                                                                  evalDescr.getContent() );
        final List[] usedIdentifiers = analysis.getBoundIdentifiers();

        final Declaration[] declarations = new Declaration[usedIdentifiers[0].size()];
        for ( int i = 0, size = usedIdentifiers[0].size(); i < size; i++ ) {
            declarations[i] = context.getDeclarationResolver().getDeclaration( (String) usedIdentifiers[0].get( i ) );
        }

        final EvalCondition eval = new EvalCondition( declarations );

        final Map map = createVariableContext( className,
                                               (String) evalDescr.getContent(),
                                               context,
                                               declarations,
                                               null,
                                               (String[]) usedIdentifiers[1].toArray( new String[usedIdentifiers[1].size()] ) );

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        map.put( "a",
                 declaration );
        declarationResolver.setDeclarations( map );
        context.setDeclarationResolver( declarationResolver );

        final EvalDescr evalDescr = new EvalDescr();
        evalDescr.setContent( "a == 10" );

        final MVELEvalBuilder builder = new MVELEvalBuilder();
        final EvalCondition eval = (EvalCondition) builder.build( context,
                                                                  evalDescr );
        ((MVELEvalExpression) eval.getEvalExpression()).compile( Thread.currentThread().getContextClassLoader() );
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        pattern.addConstraint( fieldBindingDescr );

        packageDescr.addGlobal( new GlobalDescr( "map",
                                                 "java.util.Map" ) );

        final EvalDescr evalDescr = new EvalDescr( "( ( Integer )map.get( new Integer(x) ) ).intValue() == y" );
        lhs.addDescr( evalDescr );

        ruleDescr.setConsequence( "update(stilton);" );

        builder.addPackage( packageDescr );
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        ruleDescr.setLhs( lhs );

        packageDescr.addGlobal( new GlobalDescr( "map",
                                                 "java.util.Map" ) );

        final EvalDescr evalDescr = new EvalDescr( expression );
        lhs.addDescr( evalDescr );

        ruleDescr.setConsequence( "" );
    }
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     */
    public RuleConditionElement build(final RuleBuildContext context,
                                      final BaseDescr descr,
                                      final Pattern prefixPattern) {
        Appendable builder = new StringBuilderAppendable();
        EvalDescr edescr = (EvalDescr) descr;
            FunctionHandlers.dump( (LispForm) edescr.getContent(),
                                   builder );
            edescr.setContent( builder.toString() );
        return super.build(context, descr, prefixPattern);
    }
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                      pack.getRules().size() );
        final RuleDescr rule = (RuleDescr) pack.getRules().get( 0 );
        assertEquals( 4,
                      rule.getLhs().getDescrs().size() );

        final EvalDescr eval = (EvalDescr) rule.getLhs().getDescrs().get( 0 );
        assertEqualsIgnoreWhitespace( "abc(\"foo\") + 5",
                                      (String) eval.getContent() );

        final PatternDescr pattern = (PatternDescr) rule.getLhs().getDescrs().get( 1 );
        assertEquals( "Foo",
                      pattern.getObjectType() );
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                      patternDescr.getObjectType() );
        patternDescr = (PatternDescr) orDescr.getDescrs().get( 0 );
        assertEquals( "Zaa",
                      patternDescr.getObjectType() );

        final EvalDescr evalDescr = (EvalDescr) lhsDescr.getDescrs().get( 9 );
        assertEquals( "1==1",
                      evalDescr.getContent() );
    }
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        RuleDescr ruleDescr = new RuleDescr( "test rule" );
        ruleDescr.addAttribute( new AttributeDescr( "dialect",
                                                    "mock" ) );
        ruleDescr.setLhs( new AndDescr() );
        EvalDescr evalDescr = new EvalDescr();
        ruleDescr.getLhs().addDescr( evalDescr );

        PackageDescr pkgDescr = new PackageDescr( "org.pkg1" );
        pkgDescr.addImport( new ImportDescr( "java.util.HashMap" ) );
        FunctionImportDescr functionImportDescr = new FunctionImportDescr();
        functionImportDescr.setTarget( "java.lang.System.currentTimeMillis" );
        pkgDescr.addFunctionImport( functionImportDescr );

        pkgDescr.addRule( ruleDescr );

        builder.addPackage( pkgDescr );

        assertSame( ruleDescr,
                    mockDialect2.getRuleDescr() );
        assertTrue( mockDialect2.getImport().contains( "java.util.HashMap" ) );
        assertTrue( mockDialect2.getStaticImport().contains( "java.lang.System.currentTimeMillis" ) );
        assertEquals( "eval was built",
                      evalDescr.getContent() );
        assertEquals( "consequence was built",
                      ruleDescr.getConsequence() );
        assertTrue( mockDialect2.isCompileAll() );       

        assertNotNull( pkg.getRule( "test rule" ) );
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        implements
        RuleConditionBuilder {

        public RuleConditionElement build(RuleBuildContext context,
                                          BaseDescr descr) {
            EvalDescr evalDescr = (EvalDescr) descr;
            evalDescr.setContent( "eval was built" );
            return null;
        }
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        map.put( "a",
                 declaration );
        declarationResolver.setDeclarations( map );
        context.setDeclarationResolver( declarationResolver );

        final EvalDescr evalDescr = new EvalDescr();
        evalDescr.setContent( "a == 10" );

        final MVELEvalBuilder builder = new MVELEvalBuilder();
        final EvalCondition eval = (EvalCondition) builder.build( context,
                                                                  evalDescr );
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Related Classes of org.drools.lang.descr.EvalDescr

  • org.drools.clips.LhsClpParserTest
  • org.drools.compiler.PackageBuilderConfigurationTest
  • org.drools.compiler.PackageBuilderConfigurationTest$MockEvalBuilder
  • org.drools.compiler.PackageBuilderTest
  • org.drools.compiler.xml.rules.EvalHandler
  • org.drools.compiler.xml.rules.XmlPackageReaderTest
  • org.drools.lang.api.EvalDescrBuilderImpl
  • org.drools.lang.api.impl.EvalDescrBuilderImpl
  • org.drools.lang.RuleParserTest
  • org.drools.rule.builder.dialect.asm.AbstractASMEvalBuilder
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