Package org.drools.rule.builder.dialect.mvel

Examples of org.drools.rule.builder.dialect.mvel.MVELDialect

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                               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 );

        // analyze field type:
        Class resultType = getFieldReturnType( pattern,
                                               fieldConstraintDescr );

        PredicateDescr predicateDescr = new PredicateDescr();
        MVELDumper dumper = new MVELDumper();
        predicateDescr.setContent( dumper.dump( fieldConstraintDescr,
                                                Date.class.isAssignableFrom( resultType ) ) );

        build( context,
               pattern,
               predicateDescr,
               container );

        mvelDialect.setStrictMode( strictMode );
        // fall back to original dialect
        context.setDialect( dialect );
    }
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    }

    protected String fixModifyBlocks(final RuleBuildContext context,
                                     final JavaAnalysisResult analysis,
                                     final String originalCode) {
        MVELDialect mvel = (MVELDialect) context.getDialect( "mvel" );

        TreeSet blocks = new TreeSet( new Comparator() {
            public int compare(Object o1,
                               Object o2) {
                JavaModifyBlockDescr d1 = (JavaModifyBlockDescr) o1;
                JavaModifyBlockDescr d2 = (JavaModifyBlockDescr) o2;
                return d1.getStart() - d2.getStart();
            }
        } );

        for ( Iterator it = analysis.getModifyBlocks().iterator(); it.hasNext(); ) {
            blocks.add( it.next() );
        }

        StringBuffer consequence = new StringBuffer();
        int lastAdded = 0;
        for ( Iterator it = blocks.iterator(); it.hasNext(); ) {
            JavaModifyBlockDescr d = (JavaModifyBlockDescr) it.next();
            // adding chunk
            consequence.append( originalCode.substring( lastAdded,
                                                        d.getStart() - 1 ) );
            lastAdded = d.getEnd();

            Dialect.AnalysisResult mvelAnalysis = mvel.analyzeBlock( context,
                                                                     context.getRuleDescr(),
                                                                     mvel.getInterceptors(),
                                                                     d.getModifyExpression(),
                                                                     new Set[]{context.getDeclarationResolver().getDeclarations(context.getRule()).keySet(), context.getPkg().getGlobals().keySet()},
                                                                     null );

            final ExecutableStatement expr = (ExecutableStatement) mvel.compile( d.getModifyExpression(),
                                                                                 mvelAnalysis,
                                                                                 mvel.getInterceptors(),
                                                                                 null,
                                                                                 null,
                                                                                 context );

            Class ret = expr.getKnownEgressType();
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        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 );
            }

            // execute it as a return value
            restriction = buildRestriction( context,
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                                          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.copyLocation( base );
        buildEval( context, pattern, pdescr, aliases, expr, false );
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            }
        } else if ( 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,
                                                                           context,
                                                                           false );
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            if ( restriction == null ) {
                Dialect dialect = context.getDialect();
                if ( !rightValue.startsWith( "(" ) ) {
                    // it's not a traditional return value, so override the dialect
                    MVELDialect mvelDialect = (MVELDialect) context.getDialect( "mvel" );
                    context.setDialect( mvelDialect );
                }

                // execute it as a return value
                restriction = buildRestriction( context,
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    private void createAndBuildPredicate( RuleBuildContext context,
                                          Pattern pattern,
                                          String expr,
                                          Map<String, OperatorDescr> aliases ) {
        Dialect dialect = context.getDialect();
        MVELDialect mvelDialect = (MVELDialect) context.getDialect( "mvel" );
        context.setDialect( mvelDialect );

        PredicateDescr pdescr = new PredicateDescr( expr );
        buildEval( context,
                   pattern,
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        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 );
            }

            // execute it as a return value
            restriction = buildRestriction( context,
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                                          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.copyLocation( base );
        buildEval( context, pattern, pdescr, aliases, expr, false );
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            }
        } else if ( 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,
                                                                           context,
                                                                           false );
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Related Classes of org.drools.rule.builder.dialect.mvel.MVELDialect

  • org.drools.base.ModifyInterceptor
  • org.drools.base.mvel.DroolsMVELKnowledgeHelper
  • org.drools.base.mvel.MVELCompilationUnit
  • org.drools.commons.jci.readers.MemoryResourceReader
  • org.drools.compiler.AnalysisResult
  • org.drools.compiler.DescrBuildError
  • org.drools.compiler.ImportError
  • org.drools.compiler.PackageBuilder
  • org.drools.compiler.RuleError
  • org.drools.eclipse.editors.completion.RuleCompletionProcessor
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