Examples of ognl.Node

ognl.Node
JJTree interface for AST nodes, as modified to handle the OGNL operations getValue and setValue. JJTree's original comment: All AST nodes must implement this interface. It provides basic machinery for constructing the parent and child relationships between nodes. @author Luke Blanshard (blanshlu@netscape.net) @author Drew Davidson (drew@ognl.org)

    throws Exception
    {
        OgnlContext context = (OgnlContext) Ognl.createDefaultContext(null);
        String expr = "true ? 1 : 1/0";


        Node expression = (Node) Ognl.parseExpression(expr);
        _compiler.compileExpression(context, expression, expr);
        
        assertEquals(expression.getAccessor().get(context, null), Integer.valueOf(1));
    }

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    {
        OgnlContext context = (OgnlContext) Ognl.createDefaultContext(null);
        BasicObject root = new BasicObject();


        String exprStr = "user != null && user.name != null ? user.name : name";
        Node expression = (Node) Ognl.parseExpression(exprStr);


        int prevCount = _classFactory._classCounter;


        _compiler.compileExpression(context, expression, root);
        assert expression.getAccessor() == null;


        assertEquals(_classFactory._classCounter, prevCount);


        root.setUser(new User());


        _compiler.compileExpression(context, expression, root);
        assert expression.getAccessor() != null;


        assertEquals(_classFactory._classCounter, prevCount + 1);
    }

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    {
        OgnlContext context = (OgnlContext) Ognl.createDefaultContext(null);
        BasicObject root = new BasicObject();


        String exprStr = "user ? user.name : name";
        Node expression = (Node) Ognl.parseExpression(exprStr);


        int prevCount = _classFactory._classCounter;


        _compiler.compileExpression(context, expression, root);
        assert expression.getAccessor() == null;


        assertEquals(_classFactory._classCounter, prevCount);


        root.setUser(new User());


        _compiler.compileExpression(context, expression, root);
        assert expression.getAccessor() != null;


        assertEquals(_classFactory._classCounter, prevCount + 1);
    }

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            {
                cached = new HashMap();
                _objectCache.put(target.getClass(), cached);
            }
            
            Node result = (Node)cached.get(expression);
            
            if (result == null || result.getAccessor() == null)
            {
                result = parse(target, expression);
                cached.put(expression, result);
            }

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        ExpressionEvaluator ev = newMock(ExpressionEvaluator.class);
        ExpressionCache ec = newMock(ExpressionCache.class);
        IComponent component = newMock(IComponent.class);
        Location l = fabricateLocation(1);


        Node compiled = newMock(Node.class);
        //ExpressionAccessor accessor = newMock(ExpressionAccessor.class);


        Object expressionValue = "EXPRESSION-VALUE";


        ValueConverter vc = newValueConverter();


        expect(ec.getCompiledExpression("exp")).andReturn(compiled);


        expect(compiled.getAccessor()).andReturn(null);


        expect(ev.isConstant("exp")).andReturn(true);


        expect(ec.getCompiledExpression(component, "exp")).andReturn(compiled);

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        ExpressionEvaluator ev = newMock(ExpressionEvaluator.class);
        ExpressionCache ec = newMock(ExpressionCache.class);
        Location l = fabricateLocation(1);


        IComponent component = newComponent();
        Node compiled = newMock(Node.class);
        ExpressionAccessor accessor = newMock(ExpressionAccessor.class);


        Object expressionValue1 = new Object();
        Object expressionValue2 = new Object();


        ValueConverter vc = newValueConverter();


        expect(ec.getCompiledExpression("exp")).andReturn(compiled);


        expect(ev.isConstant("exp")).andReturn(false);


        expect(ec.getCompiledExpression(component, "exp")).andReturn(compiled);


        expect(compiled.getAccessor()).andReturn(accessor);


        expect(ev.read(component, accessor)).andReturn(expressionValue1);
        expect(ev.read(component, accessor)).andReturn(expressionValue2);


        replay();

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        ExpressionEvaluator ev = newMock(ExpressionEvaluator.class);
        ExpressionCache ec = newMock(ExpressionCache.class);
        Location l = fabricateLocation(1);


        IComponent component = newComponent();
        Node compiled = newMock(Node.class);
        ValueConverter vc = newValueConverter();


        expect(ec.getCompiledExpression("exp")).andReturn(compiled);


        expect(ev.isConstant("exp")).andReturn(false);


        Object newValue = new Object();


        ev.writeCompiled(component, compiled, newValue);


        expect(ec.getCompiledExpression(component, "exp")).andReturn(compiled);
        expect(compiled.getAccessor()).andReturn(null);


        replay();


        ExpressionBinding b = new ExpressionBinding("param", l, vc, component,
                                                    "exp", ev, ec);

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        ExpressionEvaluator ev = newMock(ExpressionEvaluator.class);
        ExpressionCache ec = newMock(ExpressionCache.class);
        Location l = fabricateLocation(1);


        IComponent component = newComponent();
        Node compiled = newMock(Node.class);


        ValueConverter vc = newValueConverter();


        expect(ec.getCompiledExpression("exp")).andReturn(compiled);
        expect(ev.isConstant("exp")).andReturn(true);

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        ExpressionEvaluator ev = newMock(ExpressionEvaluator.class);
        ExpressionCache ec = newMock(ExpressionCache.class);
        Location l = fabricateLocation(1);


        IComponent component = newComponent();
        Node compiled = newMock(Node.class);


        ValueConverter vc = newValueConverter();


        expect(ec.getCompiledExpression("exp")).andReturn(compiled);

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        ExpressionEvaluator ev = newMock(ExpressionEvaluator.class);
        ExpressionCache ec = newMock(ExpressionCache.class);
        Location l = fabricateLocation(1);


        IComponent component = newComponent();
        Node compiled = newMock(Node.class);
        ValueConverter vc = newValueConverter();


        expect(ec.getCompiledExpression("exp")).andReturn(compiled);


        expect(ev.isConstant("exp")).andReturn(false);

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Related Classes of ognl.Node

org.apache.tapestry.binding.TestExpressionBinding

org.apache.tapestry.enhance.TestHiveMindExpressionCompiler

org.apache.tapestry.services.impl.ExpressionCacheImpl

org.apache.tapestry.services.impl.TestExpressionCache

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