Package org.mvel2

Examples of org.mvel2.ParserContext

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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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    public MvelConditionEvaluator(ParserConfiguration configuration, String expression, Declaration[] declarations, String conditionClass) {
        this.declarations = declarations;
        this.conditionClass = conditionClass;
        this.parserConfiguration = configuration;
        executableStatement = (ExecutableStatement)MVEL.compileExpression(expression, new ParserContext(parserConfiguration));
    }
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    }

    public Void execute(Context context) {
        //ParserContext ctx = new Parser
       
        ParserContext parserCtx = new ParserContext( );
        String t = headerText + text;
        MVEL.compileExpression( t, parserCtx );
       
        Map<String, Class> inputs = parserCtx.getInputs();
               
        Map<String, Object> vars = new HashMap<String, Object>();
       
        for ( String name : inputs.keySet() ) {
            vars.put( name, context.get( name ) );
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        }
       
        sbuilder.append( ")" );
        sbuilder.append( ";\n" );
     
        ParserContext pctx = new ParserContext();
        //pctx.setStrongTyping( true );
       
        String t = sbuilder.toString();
       
        //System.out.println( t );
       
        ParserContext parserCtx = new ParserContext( );
        MVEL.compileExpression( t, parserCtx );
       
        Map<String, Class> inputs = parserCtx.getInputs();
             
        Map<String, Object> vars = new HashMap<String, Object>();
     
        for ( String name : inputs.keySet() ) {
            vars.put( name, context.get( name ) );
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