Examples of org.mule.mvel2.ParserContext

org.mvel2.ParserContext
Implements Hibernate's built-in support for native SQL queries.
This support is built on top of the notion of "custom queries"... @author Gavin King @author Max Andersen @author Steve Ebersole

        //Lookup ParserConfiguration to retrieve imports and package imports
        PackageRegistry packageRegistry = dialect.getPackageRegistry();
        MVELDialectRuntimeData data = (MVELDialectRuntimeData) packageRegistry.getDialectRuntimeRegistry().getDialectData( dialect.getId() );
        ParserConfiguration pconf = data.getParserConfiguration();


        final ParserContext context = new ParserContext( pconf.getImports(),
                                                         null,
                                                         qualifiedName );


        if ( pconf.getPackageImports() != null ) {
            for (String packageImport : pconf.getPackageImports()) {
                context.addPackageImport( packageImport );
            }
        }
        context.setStrictTypeEnforcement( false );


        context.setInterceptors( dialect.getInterceptors() );
        context.setInputs( params );
        context.addInput("drools", KnowledgeHelper.class);
        context.addInput("kcontext", RuleContext.class);
        context.setCompiled( true );
        return context;
    }

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            vars.putAll( this.context );
            vars.put( "tuple",
                      ((LeftTuple)tuple).toFactHandles() );


            // compile MVEL expression
            ParserContext mvelctx = new ParserContext();
            Serializable compiled = MVEL.compileExpression( this.expr,
                                                            mvelctx );
            // execute the expression
            Boolean result = (Boolean) MVEL.executeExpression( compiled,
                                                               vars );

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                Class<?> variableType = getVariableType(variableName);
                if (variableType != null) {
                    return new VariableExpression(variableName, analyzeExpressionNode(accessorNode, node, variableType), variableType);
                } else {
                    if (node.getLiteralValue() instanceof ParserContext) {
                        ParserContext pCtx = (ParserContext)node.getLiteralValue();
                        // it's not a variable but a method invocation on this
                        Class<?> thisClass = pCtx.getInputs().get("this");
                        try {
                            return new EvaluatedExpression(new MethodInvocation(thisClass.getMethod(variableName)));
                        } catch (NoSuchMethodException e) {
                            if (node.getEgressType() == Class.class) {
                                // there's no method on this with the given name, check if it is a class literal
                                Class<?> classLiteral = pCtx.getParserConfiguration().getImport(variableName);
                                if (classLiteral != null) {
                                    return new FixedExpression(Class.class, classLiteral);
                                }
                            }
                            throw new RuntimeException(e);

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        MVELDialectRuntimeData data = (MVELDialectRuntimeData) context.getPkg().getDialectRuntimeRegistry().getDialectData( "mvel" );
        ParserConfiguration conf = data.getParserConfiguration();


        conf.setClassLoader( context.getPackageBuilder().getRootClassLoader() );


        final ParserContext pctx = new ParserContext( conf );
        pctx.setStrictTypeEnforcement( false );
        pctx.setStrongTyping( false );
        pctx.addInput( "this",
                       thisClass );
        pctx.addInput( "empty",
                       boolean.class ); // overrides the mvel empty label
        MVEL.COMPILER_OPT_ALLOW_NAKED_METH_CALL = true;
        MVEL.COMPILER_OPT_ALLOW_OVERRIDE_ALL_PROPHANDLING = true;
        MVEL.COMPILER_OPT_ALLOW_RESOLVE_INNERCLASSES_WITH_DOTNOTATION = true;
        MVEL.COMPILER_OPT_SUPPORT_JAVA_STYLE_CLASS_LITERALS = true;
        MVEL.analysisCompile( expr,
                              pctx );


        if ( !pctx.getInputs().isEmpty() ) {
            for ( String v : pctx.getInputs().keySet() ) {
                // in the following if, we need to check that the expr actually contains a reference
                // to an "empty" property, or the if will evaluate to true even if it doesn't 
                if ( "this".equals( v ) || (PropertyTools.getFieldOrAccessor( thisClass,
                                                                               v ) != null && expr.matches( "(^|.*\\W)empty($|\\W.*)" )) ) {
                    descrBranch.getFieldAccessors().add( v );

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            MVEL.COMPILER_OPT_ALLOW_RESOLVE_INNERCLASSES_WITH_DOTNOTATION = true;
            MVEL.COMPILER_OPT_SUPPORT_JAVA_STYLE_CLASS_LITERALS = true;


            MVELDialectRuntimeData data = (MVELDialectRuntimeData) context.getPkg().getDialectRuntimeRegistry().getDialectData( "mvel" );
            ParserConfiguration pconf = data.getParserConfiguration();
            ParserContext pctx = new ParserContext( pconf );


            Object o = MVEL.executeExpression( MVEL.compileExpression( value,
                                                                       pctx ) );
            if ( o != null && vtype == null ) {
                // was a compilation problem else where, so guess valuetype so we can continue

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        MVELDialectRuntimeData data = (MVELDialectRuntimeData) context.getPkg().getDialectRuntimeRegistry().getDialectData( "mvel" );
        ParserConfiguration conf = data.getParserConfiguration();


        conf.setClassLoader( context.getKnowledgeBuilder().getRootClassLoader() );


        final ParserContext pctx = new ParserContext( conf );
        pctx.setStrictTypeEnforcement(false);
        pctx.setStrongTyping( false );
        pctx.addInput( "this",
                       thisClass );
        pctx.addInput( "empty",
                       boolean.class ); // overrides the mvel empty label
        MVEL.COMPILER_OPT_ALLOW_NAKED_METH_CALL = true;
        MVEL.COMPILER_OPT_ALLOW_OVERRIDE_ALL_PROPHANDLING = true;
        MVEL.COMPILER_OPT_ALLOW_RESOLVE_INNERCLASSES_WITH_DOTNOTATION = true;
        MVEL.COMPILER_OPT_SUPPORT_JAVA_STYLE_CLASS_LITERALS = true;


        try {
            MVEL.analysisCompile( expr, pctx );
        } catch (Exception e) {
            // There is a problem in setting the inputs for this expression, but it will be
            // reported during expression analysis, so swallow it at the moment
            return;
        }


        if ( !pctx.getInputs().isEmpty() ) {
            for ( String v : pctx.getInputs().keySet() ) {
                // in the following if, we need to check that the expr actually contains a reference
                // to an "empty" property, or the if will evaluate to true even if it doesn't 
                if ( "this".equals( v ) || (PropertyTools.getFieldOrAccessor( thisClass,
                                                                               v ) != null && expr.matches( "(^|.*\\W)empty($|\\W.*)" )) ) {
                    descrBranch.getFieldAccessors().add( v );

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            MVEL.COMPILER_OPT_ALLOW_RESOLVE_INNERCLASSES_WITH_DOTNOTATION = true;
            MVEL.COMPILER_OPT_SUPPORT_JAVA_STYLE_CLASS_LITERALS = true;


            MVELDialectRuntimeData data = (MVELDialectRuntimeData) context.getPkg().getDialectRuntimeRegistry().getDialectData( "mvel" );
            ParserConfiguration pconf = data.getParserConfiguration();
            ParserContext pctx = new ParserContext( pconf );


            Object o = MVELSafeHelper.getEvaluator().executeExpression( MVEL.compileExpression( value,
                    pctx ) );
            if ( o != null && vtype == null ) {
                // was a compilation problem else where, so guess valuetype so we can continue

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                Class<?> variableType = getVariableType(variableName);
                if (variableType != null) {
                    return new VariableExpression(variableName, analyzeExpressionNode(accessorNode, node, variableType), variableType);
                } else {
                    if (node.getLiteralValue() instanceof ParserContext) {
                        ParserContext pCtx = (ParserContext)node.getLiteralValue();
                        // it's not a variable but a method invocation on this
                        Class<?> thisClass = pCtx.getInputs().get("this");
                        try {
                            return new EvaluatedExpression(new MethodInvocation(thisClass.getMethod(variableName)));
                        } catch (NoSuchMethodException e) {
                            if (node.getEgressType() == Class.class) {
                                // there's no method on this with the given name, check if it is a class literal
                                Class<?> classLiteral = pCtx.getParserConfiguration().getImport(variableName);
                                if (classLiteral != null) {
                                    return new FixedExpression(Class.class, classLiteral);
                                }
                            }
                            throw new RuntimeException(e);

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        this.factObject = factObject;
        this.resolver = resolver;


        this.pconf = new ParserConfiguration();
        pconf.setClassLoader(resolver.getClassLoader());
        this.pctx = new ParserContext(pconf);
        pctx.setStrongTyping(true);
    }

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        this.typeResolver = typeResolver;
        this.fieldValue = fieldValue;


        this.pconf = new ParserConfiguration();
        pconf.setClassLoader( typeResolver.getClassLoader() ); // classLoader );
        this.pctx = new ParserContext( pconf );
        pctx.setStrongTyping( true );
    }

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