Examples of org.drools.compiler.Dialect

org.drools.compiler.Dialect
A Dialect implementation handles the building and execution of code expressions and blocks for a rule. This api is considered unstable, and subject to change. Those wishing to implement their own dialects should look ove the MVEL and Java dialect implementations.

              
                ProcessDescr processDescr = new ProcessDescr();
                processDescr.setName(process.getPackageName() + "." + process.getName());
                processDescr.setResource( resource );
                DialectCompiletimeRegistry dialectRegistry = pkgRegistry.getDialectCompiletimeRegistry();           
                Dialect dialect = dialectRegistry.getDialect( "java" );
                dialect.init(processDescr);
    
                ProcessBuildContext buildContext = new ProcessBuildContext(
                this.packageBuilder,
                    p,
                    process,

View Full Code Here

    public EvaluatorWrapper wrapEvaluator( Evaluator evaluator, Declaration left, Declaration right ) {
        return new EvaluatorWrapper( evaluator, left, right );
    }


    public MVELCompilationUnit buildCompilationUnit(RuleBuildContext context, Pattern pattern, String expression, Map<String, OperatorDescr> aliases) {
        Dialect dialect = context.getDialect();
        context.setDialect( context.getDialect( "mvel" ) );


        PredicateDescr predicateDescr = new PredicateDescr( context.getRuleDescr().getResource(), expression );
        AnalysisResult analysis = buildAnalysis(context, pattern, predicateDescr, aliases);
        if ( analysis == null ) {

View Full Code Here

    protected void createAndBuildPredicate( RuleBuildContext context,
                                          Pattern pattern,
                                          BaseDescr base,
                                          String expr,
                                          Map<String, OperatorDescr> aliases ) {
        Dialect dialect = context.getDialect();
        MVELDialect mvelDialect = (MVELDialect) context.getDialect( "mvel" );
        context.setDialect( mvelDialect );


        PredicateDescr pdescr = new PredicateDescr( context.getRuleDescr().getResource(), expr );
        pdescr.copyParameters( base );

View Full Code Here

                target.setReadAccessor( reader );
            }
        } else if ( ! identifierRegexp.matcher( fieldName ).matches()
                    || ( fieldName.indexOf( '.' ) > -1 || fieldName.indexOf( '[' ) > -1 || fieldName.indexOf( '(' ) > -1 ) ) {
            // we need MVEL extractor for expressions
            Dialect dialect = context.getDialect();
            try {
                MVELDialect mvelDialect = (MVELDialect) context.getDialect( "mvel" );
                context.setDialect( mvelDialect );


                Map<String, Class< ? >> declarations = getDeclarationsMap( descr,

View Full Code Here

        
        if ( this.rule.getDialect() == null ) {
            this.rule.setDialect( getDialect().getId() );
        }


        Dialect dialect = getDialect();
        if ( dialect != null ) {
            dialect.init( ruleDescr );
        }


        compilerFactory = pkgBuilder.getPackageBuilderConfiguration().getComponentFactory();


    }

View Full Code Here

            final RuleBuilder builder = new RuleBuilder();


            final PackageBuilder pkgBuilder = new PackageBuilder( pkg );
            final PackageBuilderConfiguration conf = pkgBuilder.getPackageBuilderConfiguration();
            DialectCompiletimeRegistry dialectRegistry = pkgBuilder.getPackageRegistry( pkg.getName() ).getDialectCompiletimeRegistry();
            Dialect dialect = dialectRegistry.getDialect( "mvel" );


            RuleBuildContext context = new RuleBuildContext( pkgBuilder,
                                                             ruleDescr,
                                                             dialectRegistry,
                                                             pkg,

View Full Code Here

        pkgBuilder.addPackage( new PackageDescr( "org.drools" ) );
        final PackageBuilderConfiguration conf = pkgBuilder.getPackageBuilderConfiguration();
        PackageRegistry pkgReg = pkgBuilder.getPackageRegistry( "org.drools" );
        Package pkg = pkgReg.getPackage();
        DialectCompiletimeRegistry dialectRegistry = pkgReg.getDialectCompiletimeRegistry();
        Dialect dialect = dialectRegistry.getDialect( "java" );
                
        RuleDescr ruleDescr = new RuleDescr("test rule");
        RuleBuildContext context = new RuleBuildContext( pkgBuilder, ruleDescr, dialectRegistry, pkg, dialect);
        
        Accumulate accumulate = (Accumulate) builder.build( context, accumDescr );

View Full Code Here

                restriction = new UnificationRestriction( (VariableRestriction) restriction );
            }
        }


        if ( restriction == null ) {
            Dialect dialect = context.getDialect();
            if ( !value2.startsWith( "(" ) ) {
                // it's not a traditional return value, so override the dialect
                MVELDialect mvelDialect = (MVELDialect) context.getDialect( "mvel" );
                context.setDialect( mvelDialect );
            }

View Full Code Here

    private void createAndBuildPredicate( RuleBuildContext context,
                                          Pattern pattern,
                                          BaseDescr base,
                                          String expr,
                                          Map<String, OperatorDescr> aliases ) {
        Dialect dialect = context.getDialect();
        MVELDialect mvelDialect = (MVELDialect) context.getDialect( "mvel" );
        context.setDialect( mvelDialect );


        PredicateDescr pdescr = new PredicateDescr( expr );
        pdescr.copyLocation( base );

View Full Code Here

    private void rewriteToEval(final RuleBuildContext context,
                               final Pattern pattern,
                               final FieldConstraintDescr fieldConstraintDescr,
                               final AbstractCompositeConstraint container) {
        // it is a complex expression, so we need to turn it into an MVEL predicate
        Dialect dialect = context.getDialect();
        // switch to MVEL dialect
        MVELDialect mvelDialect = (MVELDialect) context.getDialect( "mvel" );
        boolean strictMode = mvelDialect.isStrictMode();
        mvelDialect.setStrictMode( false );
        context.setDialect( mvelDialect );

View Full Code Here

0 1 2 3 4 5 6 7 8 9

TOP

Related Classes of org.drools.compiler.Dialect

org.drools.process.builder.ActionNodeBuilder

org.drools.process.builder.ExtendedNodeBuilder

org.drools.process.builder.SplitNodeBuilder

org.drools.process.builder.StoreNodeBuilder

org.drools.rule.builder.ConstraintBuilder

org.drools.rule.builder.dialect.java.JavaAccumulateBuilderTest

org.drools.rule.builder.dialect.java.RuleBuilderTest

org.drools.rule.builder.dialect.mvel.MVELConsequenceBuilderTest

org.drools.rule.builder.MVELConstraintBuilder

org.drools.rule.builder.PatternBuilder

All source code are property of their respective owners. Java is a trademark of Sun Microsystems, Inc and owned by ORACLE Inc. Contact coftware#gmail.com.