Examples of org.apache.commons.jexl2.parser.JexlNode

org.apache.commons.jexl2.parser.Token
Base class for parser nodes - holds an 'image' of the token for later use. @since 2.0

        Object left = node.jjtGetChild(0).jjtAccept(this, data);
        Object right = node.jjtGetChild(1).jjtAccept(this, data);
        try {
            return arithmetic.multiply(left, right);
        } catch (ArithmeticException xrt) {
            JexlNode xnode = findNullOperand(xrt, node, left, right);
            throw new JexlException(xnode, "* error", xrt);
        }
    }

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        Object left = node.jjtGetChild(0).jjtAccept(this, data);
        Object right = node.jjtGetChild(1).jjtAccept(this, data);
        try {
            return arithmetic.equals(left, right) ? Boolean.FALSE : Boolean.TRUE;
        } catch (ArithmeticException xrt) {
            JexlNode xnode = findNullOperand(xrt, node, left, right);
            throw new JexlException(xnode, "!= error", xrt);
        }
    }

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        expr = "#0" + (expr.charAt(0) == '[' ? "" : ".") + expr + ";";
        try {
            parser.ALLOW_REGISTERS = true;
            Scope frame = new Scope("#0");
            ASTJexlScript script = parse(expr, null, frame);
            JexlNode node = script.jjtGetChild(0);
            Interpreter interpreter = createInterpreter(context);
            // set frame
            interpreter.setFrame(script.createFrame(bean));
            return node.jjtAccept(interpreter, null);
        } catch (JexlException xjexl) {
            if (silent) {
                logger.warn(xjexl.getMessage(), xjexl.getCause());
                return null;
            }

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        expr = "#0" + (expr.charAt(0) == '[' ? "" : ".") + expr + "=" + "#1" + ";";
        try {
            parser.ALLOW_REGISTERS = true;
            Scope frame = new Scope("#0", "#1");
            ASTJexlScript script = parse(expr, null, frame);
            JexlNode node = script.jjtGetChild(0);
            Interpreter interpreter = createInterpreter(context);
            // set the registers
            interpreter.setFrame(script.createFrame(bean, value));
            node.jjtAccept(interpreter, null);
        } catch (JexlException xjexl) {
            if (silent) {
                logger.warn(xjexl.getMessage(), xjexl.getCause());
                return;
            }

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        int num = node.jjtGetNumChildren();
        if (array || reference) {
            List<String> var = ref != null ? ref : new ArrayList<String>();
            boolean varf = true;
            for (int i = 0; i < num; ++i) {
                JexlNode child = node.jjtGetChild(i);
                if (array) {
                    if (child instanceof ASTReference && child.jjtGetNumChildren() == 1) {
                        JexlNode desc = child.jjtGetChild(0);
                        if (varf && desc.isConstant()) {
                            String image = desc.image;
                            if (image == null) {
                                var.add(new Debugger().data(desc));
                            } else {
                                var.add(image);

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        /** {@inheritDoc} */
        @Override
        protected Expression prepare(Interpreter interpreter) {
            String value = interpreter.interpret(node).toString();
            JexlNode dnode = jexl.parse(value, jexl.isDebug() ? node.debugInfo() : null, null);
            return new ImmediateExpression(value, dnode, this);
        }

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    /** {@inheritDoc} */
    public Object visit(ASTWhileStatement node, Object data) {
        Object result = null;
        /* first objectNode is the expression */
        Node expressionNode = node.jjtGetChild(0);
        while (arithmetic.toBoolean(expressionNode.jjtAccept(this, data))) {
            // execute statement
            result = node.jjtGetChild(1).jjtAccept(this, data);
        }


        return result;

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    {
        JexlContext jc = new MapContext();
        jc.set("aString", "Hello");
        Foo foo = new Foo();
        jc.set("foo", foo);
        Parser parser = new Parser(new StringReader(";"));
        parser.parse(new StringReader("aString = 'World';"), null);
        
        assertExpression(jc, "hello = 'world'", "world");
        assertEquals("hello variable not changed", "world", jc.get("hello"));
        assertExpression(jc, "result = 1 + 1", new Integer(2));
        assertEquals("result variable not changed", new Integer(2), jc.get("result"));

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     * @throws InvalidSearchConditionException in case of errors retrieving identifiers
     */
    private Set<String> getWhereClause(final String expression, final String value, final AttributableUtil attrUtil)
            throws InvalidSearchConditionException {


        final Parser parser = new Parser(new StringReader(expression));


        // Schema names
        final List<String> identifiers = new ArrayList<String>();


        // Literals
        final List<String> literals = new ArrayList<String>();


        // Get schema names and literals
        Token token;
        while ((token = parser.getNextToken()) != null && StringUtils.hasText(token.toString())) {
            if (token.kind == ParserConstants.STRING_LITERAL) {
                literals.add(token.toString().substring(1, token.toString().length() - 1));
            }


            if (token.kind == ParserConstants.IDENTIFIER) {

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        // Literals
        final List<String> literals = new ArrayList<String>();


        // Get schema names and literals
        Token token;
        while ((token = parser.getNextToken()) != null && StringUtils.hasText(token.toString())) {
            if (token.kind == ParserConstants.STRING_LITERAL) {
                literals.add(token.toString().substring(1, token.toString().length() - 1));
            }


            if (token.kind == ParserConstants.IDENTIFIER) {
                identifiers.add(token.toString());
            }
        }


        // Sort literals in order to process later literals included into others
        Collections.sort(literals, new Comparator<String>() {

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