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

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

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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(),
                                                                     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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                                          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 );
        pdescr.copyLocation( base );
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        } 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,
                                                                           context,
                                                                           false );
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        String timestamp = ( annotationDescr != null ) ? annotationDescr.getSingleValue() : null;
        if (timestamp != null) {
            type.setTimestampAttribute( timestamp );
            Package pkg = pkgRegistry.getPackage();           

            MVELDialect dialect = ( MVELDialect ) pkgRegistry.getDialectCompiletimeRegistry().getDialect( "mvel" );           
            PackageBuildContext context = new PackageBuildContext();           
            context.init( this, pkg, typeDescr, pkgRegistry.getDialectCompiletimeRegistry(), dialect, null );
            if ( !type.isTypesafe() ) {
                context.setTypesafe( false );
            }
           
            MVELAnalysisResult results = ( MVELAnalysisResult )
                                context.getDialect().analyzeExpression( context,
                                                                        typeDescr,
                                                                        timestamp,
                                                                        new BoundIdentifiers( Collections.EMPTY_MAP,
                                                                                              Collections.EMPTY_MAP,
                                                                                              Collections.EMPTY_MAP,
                                                                                              type.getTypeClass() ) );

            if ( results != null ) {
                InternalReadAccessor reader = pkg.getClassFieldAccessorStore().getMVELReader( ClassUtils.getPackage(type.getTypeClass()),
                                                                                              type.getTypeClass().getName(),
                                                                                              timestamp,
                                                                                              type.isTypesafe(),
                                                                                              results.getReturnType() );

                MVELDialectRuntimeData data = (MVELDialectRuntimeData) pkg.getDialectRuntimeRegistry().getDialectData( "mvel" );
                data.addCompileable( (MVELCompileable) reader );
                ( (MVELCompileable) reader ).compile( data );
                type.setTimestampExtractor( reader );
            } else {
                this.results.add( new TypeDeclarationError( typeDescr,
                                                            "Error creating field accessors for timestamp field '" + timestamp +
                                                            "' for type '" +
                                                            type.getTypeName() +
                                                            "'" ) );
            }
        }

        annotationDescr = typeDescr.getAnnotation( TypeDeclaration.ATTR_DURATION );
        String duration = ( annotationDescr != null ) ? annotationDescr.getSingleValue() : null;
        if (duration != null) {
            type.setDurationAttribute( duration );
            Package pkg = pkgRegistry.getPackage();
           
            MVELDialect dialect = ( MVELDialect ) pkgRegistry.getDialectCompiletimeRegistry().getDialect( "mvel" );           
            PackageBuildContext context = new PackageBuildContext();           
            context.init( this, pkg, typeDescr, pkgRegistry.getDialectCompiletimeRegistry(), dialect, null );
            if ( !type.isTypesafe() ) {
                context.setTypesafe( false );
            }
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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(),
                                                                     null );

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

            Class ret = expr.getKnownEgressType();
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    public static String fixBlockDescr(final RuleBuildContext context,
                                       final JavaAnalysisResult analysis,
                                       Map<String, Declaration> decls,
                                       List<JavaBlockDescr> blocks) {

        MVELDialect mvel = (MVELDialect) context.getDialect("mvel");


        String originalCode = analysis.getAnalyzedExpr();
        BoundIdentifiers bindings = analysis.getBoundIdentifiers();
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Related Classes of org.drools.rule.builder.dialect.mvel.MVELDialect$ModifyInterceptor

  • 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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