Package org.drools.lang.descr

Examples of org.drools.lang.descr.EvalDescr

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

        try {
            MVELDialect dialect = (MVELDialect) context.getDialect( context.getDialect().getId() );

            Map<String, Declaration> decls = context.getDeclarationResolver().getDeclarations(context.getRule());
           
            AnalysisResult analysis = context.getDialect().analyzeExpression( context,
                                                                              evalDescr,
                                                                              evalDescr.getContent(),
                                                                              new BoundIdentifiers(context.getDeclarationResolver().getDeclarationClasses( decls ),
                                                                                                   context.getPackageBuilder().getGlobals() ) );

            final BoundIdentifiers usedIdentifiers = analysis.getBoundIdentifiers();
            int i = usedIdentifiers.getDeclarations().keySet().size();
            Declaration[] previousDeclarations = new Declaration[i];
            i = 0;
            for ( String id :  usedIdentifiers.getDeclarations().keySet() ) {
                previousDeclarations[i++] = decls.get( id );
            }
            Arrays.sort( previousDeclarations, SortDeclarations.instance  );
           
            MVELCompilationUnit unit = dialect.getMVELCompilationUnit( (String) evalDescr.getContent(),
                                                                       analysis,
                                                                       previousDeclarations,
                                                                       null,
                                                                       null,
                                                                       context,
                                                                       "drools",
                                                                       KnowledgeHelper.class);
            final EvalCondition eval = new EvalCondition( previousDeclarations );

            MVELEvalExpression expr = new MVELEvalExpression( unit,
                                                              dialect.getId() );
            eval.setEvalExpression( expr );

            MVELDialectRuntimeData data = (MVELDialectRuntimeData) context.getPkg().getDialectRuntimeRegistry().getDialectData( context.getDialect().getId() );
            data.addCompileable( eval,
                                  expr );

            expr.compile( context.getPackageBuilder().getRootClassLoader() );
            return eval;
        } catch ( final Exception e ) {
            context.getErrors().add( new DescrBuildError( context.getParentDescr(),
                                                          evalDescr,
                                                          e,
                                                          "Unable to build expression for 'eval':" + e.getMessage() + " '" + evalDescr.getContent() + "'" ) );
            return null;
        }
    }
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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;

        try {
            MVELDialect dialect = (MVELDialect) context.getDialect( context.getDialect().getId() );

            Dialect.AnalysisResult analysis = context.getDialect().analyzeExpression( context,
                                                                                      evalDescr,
                                                                                      evalDescr.getContent(),
                                                                                      new Map[]{context.getDeclarationResolver().getDeclarationClasses(context.getRule()), context.getPackageBuilder().getGlobals()} );

            Declaration[] previousDeclarations = (Declaration[]) context.getDeclarationResolver().getDeclarations(context.getRule()).values().toArray( new Declaration[context.getDeclarationResolver().getDeclarations(context.getRule()).size()] );
            MVELCompilationUnit unit = dialect.getMVELCompilationUnit( (String) evalDescr.getContent(),
                                                                       analysis,
                                                                       previousDeclarations,
                                                                       null,
                                                                       null,
                                                                       context );
            final EvalCondition eval = new EvalCondition( previousDeclarations );

            MVELEvalExpression expr = new MVELEvalExpression( unit,
                                                              dialect.getId() );
            eval.setEvalExpression( expr );           
           
            MVELDialectRuntimeData data = (MVELDialectRuntimeData) context.getPkg().getDialectRuntimeRegistry().getDialectData( context.getDialect().getId() );
            data.addCompileable( eval,
                                  expr );
           
            expr.compile( context.getPackageBuilder().getRootClassLoader() );
            return eval;
        } catch ( final Exception e ) {
            context.getErrors().add( new DescrBuildError( context.getParentDescr(),
                                                          evalDescr,
                                                          e,
                                                          "Unable to build expression for 'eval':" + e.getMessage() + " '" + evalDescr.getContent() + "'" ) );
            return null;
        }
    }
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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(),
                                                                                  new Map[]{context.getDeclarationResolver().getDeclarationClasses(context.getRule()), context.getPackageBuilder().getGlobals()} );
        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(context.getRule(), (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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                        final Attributes attrs,
                        final ExtensibleXmlParser parser) throws SAXException {
        parser.startElementBuilder( localName,
                                    attrs );

        final EvalDescr evalDescr = new EvalDescr();

        return evalDescr;
    }
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    public Object end(final String uri,
                      final String localName,
                      final ExtensibleXmlParser parser) throws SAXException {
        final Element element = parser.endElementBuilder();

        final EvalDescr evalDescr = (EvalDescr) parser.getCurrent();

        final String expression =((org.w3c.dom.Text)element.getChildNodes().item( 0 )).getWholeText();

        emptyContentCheck( localName, expression, parser );

        evalDescr.setContent( expression );

        final ConditionalElementDescr parentDescr = (ConditionalElementDescr) parser.getParent();
        parentDescr.addDescr( evalDescr );

        return evalDescr;
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    public RuleConditionElement build(final RuleBuildContext context,
                                      final BaseDescr descr,
                                      final Pattern prefixPattern) {
        boolean typesafe = context.isTypesafe();
        // it must be an EvalDescr
        final EvalDescr evalDescr = (EvalDescr) descr;

        try {
            MVELDialect dialect = (MVELDialect) context.getDialect( context.getDialect().getId() );

            Map<String, Declaration> decls = context.getDeclarationResolver().getDeclarations(context.getRule());
           
            AnalysisResult analysis = context.getDialect().analyzeExpression( context,
                                                                              evalDescr,
                                                                              evalDescr.getContent(),
                                                                              new BoundIdentifiers(context.getDeclarationResolver().getDeclarationClasses( decls ),
                                                                                                   context.getPackageBuilder().getGlobals() ) );

            final BoundIdentifiers usedIdentifiers = analysis.getBoundIdentifiers();
            int i = usedIdentifiers.getDeclrClasses().keySet().size();
            Declaration[] previousDeclarations = new Declaration[i];
            i = 0;
            for ( String id :  usedIdentifiers.getDeclrClasses().keySet() ) {
                previousDeclarations[i++] = decls.get( id );
            }
            Arrays.sort( previousDeclarations, SortDeclarations.instance  );
           
            MVELCompilationUnit unit = dialect.getMVELCompilationUnit( (String) evalDescr.getContent(),
                                                                       analysis,
                                                                       previousDeclarations,
                                                                       null,
                                                                       null,
                                                                       context,
                                                                       "drools",
                                                                       KnowledgeHelper.class);
            final EvalCondition eval = new EvalCondition( previousDeclarations );

            MVELEvalExpression expr = new MVELEvalExpression( unit,
                                                              dialect.getId() );
            eval.setEvalExpression( expr );

            MVELDialectRuntimeData data = (MVELDialectRuntimeData) context.getPkg().getDialectRuntimeRegistry().getDialectData( "mvel" );
            data.addCompileable( eval,
                                  expr );

            expr.compile( data );
            return eval;
        } catch ( final Exception e ) {
            copyErrorLocation(e, evalDescr);
            context.getErrors().add( new DescrBuildError( context.getParentDescr(),
                                                          evalDescr,
                                                          e,
                                                          "Unable to build expression for 'eval':" + e.getMessage() + " '" + evalDescr.getContent() + "'" ) );
            return null;
        } finally {
            context.setTypesafe( typesafe );
        }
    }
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    EvalDescrBuilder<P> {

    private P parent;

    public EvalDescrBuilderImpl() {
        super( new 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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