Package org.mule.mvel2

Examples of org.mule.mvel2.ParserConfiguration

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    }

    @Test
    public void addGlobalFunction() throws InitialisationException
    {
        mvel.addGlobalFunction("hello", new HelloWorldFunction(new ParserContext(mvel.parserConfiguration)));
        mvel.initialise();
        assertEquals("Hello World!", evaluate("hello()"));
    }
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        {
            addAlias(alias.getKey(), alias.getValue());
        }
        for (Entry<String, Function> function : functions.entrySet())
        {
            addFinalVariable(function.getKey(), new FunctionInstance(function.getValue()));
        }
    }
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    @Override
    public void declareFunction(String name, ExpressionLanguageFunction function)
    {
        try
        {
            addFinalVariable(name, new FunctionInstance(new MVELFunctionAdaptor(name, function,
                    new ParserContext(parserConfiguration))));
        }
        finally
        {
            // Clear AbstractParser.parserContext ThreadLocal once Function has been created.
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        // Global functions defined in external file
        if (globalFunctionsFile != null)
        {
            try
            {
                globalFunctions.putAll(CompilerTools.extractAllDeclaredFunctions(new ExpressionCompiler(
                    IOUtils.getResourceAsString(globalFunctionsFile, getClass())).compile()));
            }
            catch (IOException e)
            {
                throw new InitialisationException(CoreMessages.failedToLoad(globalFunctionsFile), e, this);
            }
        }

        // Global functions defined in configuration file (take precedence over functions in file)
        globalFunctions.putAll(CompilerTools.extractAllDeclaredFunctions(new ExpressionCompiler(
            globalFunctionsString).compile()));
    }
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    }

    @Override
    public VariableResolver getVariableResolver(String name)
    {
        VariableResolver vr = delegate.getVariableResolver(name);
        if (vr == null && next != null)
        {
            vr = next.getVariableResolver(name);
        }
        return vr;
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    }

    @Override
    public VariableResolver getVariableResolver(String name)
    {
        VariableResolver variableResolver = variableResolvers.get(name);
        if (variableResolver != null)
        {
            return variableResolver;
        }
        else
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    }

    @Override
    public VariableResolver createVariable(String name, Object value, Class<?> type)
    {
        VariableResolver vr = getVariableResolver(name);

        if (vr != null)
        {
            vr.setValue(value);
        }
        else
        {
            addResolver(name, vr = new MuleVariableResolver<Object>(name, value, type, null));
        }
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    }

    @Override
    public VariableResolver getVariableResolver(String name)
    {
        VariableResolver variableResolver = super.getVariableResolver(name);
        // In order to allow aliases to use message context without requiring the creating of a
        // GlobalVariableResolver for each expression evaluation, we create a new resolver on the fly with
        // current context instead.
        if (variableResolver instanceof MuleAliasVariableResolver)
        {
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    @SuppressWarnings("unchecked")
    @Override
    public <T> T getVariable(String name)
    {
        VariableResolver resolver = getVariableResolver(name);
        if (resolver != null)
        {
            return (T) resolver.getValue();
        }
        else
        {
            return null;
        }
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    public <T> T evaluate(String expression, Map<String, Object> vars)
    {
        MVELExpressionLanguageContext context = createExpressionLanguageContext();
        if (vars != null)
        {
            context.setNextFactory(new CachedMapVariableResolverFactory(vars,
                new DelegateVariableResolverFactory(staticContext, globalContext)));
        }
        else
        {
            context.setNextFactory(new DelegateVariableResolverFactory(staticContext, globalContext));
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