Examples of cambridge.model.Expression

cambridge.model.Expression
User: erdinc Date: Oct 31, 2009 Time: 12:34:28 AM

    @Test
    public void testList() throws Exception
    {
        String expression = "['a', 'b', 213, aa]";
        ExpressionContext context = expressionLanguage.createNewContext();
        Expression e = expressionLanguage.parse(expression, 0, 0);
        assertTrue(e.eval(context) instanceof List);
        List<?> l = (List<?>) e.eval(context);
        assertEquals("a", l.get(0));
        assertEquals("b", l.get(1));
        assertEquals(213, l.get(2));
    }

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        }


        String varName = matcher.group(1);
        String expression = matcher.group(2);


        Expression ex = expressionLanguage.parse(expression, currentToken.getLineNo(), currentToken.getColumn());


        return new SetDirective(varName, ex);
    }

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      TemplateLoader loader = new DirectoryTemplateLoader(templateDir, "UTF-8");
      tf = loader.newTemplateFactory("index.html", new TemplateModifier() {
         public void modifyTemplate(TemplateDocument doc) {
            Tag li = doc.getElementsByTagName("li").get(1);
            try {
                Expression expression = Expressions.cambridgeExpressionLanguage.parse("message", 1, 1);
                li.addExpression(expression);
            } catch (ExpressionParsingException e) {
               e.printStackTrace();
            }
         }

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    @Test
    public void testSimple() throws ExpressionEvaluationException
    {
        ExpressionContext context = expressionLanguage.createNewContext();
        Expression expression = expressionLanguage.parse("5 + 8", 1, 1);


        Object result = expression.eval(context);
        assertEquals("Testing simple arithmetic", 13, result);
    }

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    @Test
    public void testVariableAccess() throws Exception
    {
        ExpressionContext context = expressionLanguage.createNewContext();
        context.put("name", "Cambridge");
        Expression expression = expressionLanguage.parse("name", 1, 1);


        Object result = expression.eval(context);
        assertEquals("Testing variable access", "Cambridge", result);
    }

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    @Test
    public void testBean() throws Exception
    {
        ExpressionContext context = expressionLanguage.createNewContext();
        context.put("sample", sample);
        Expression expression = expressionLanguage.parse("sample", 1, 1);


        Object result = expression.eval(context);
        assertEquals("Testing variable access", sample, result);
        assertTrue("Testing variable access", sample == result);


        assertEquals("Testing bean name", "Cambridge", expressionLanguage.parse("sample.name", 1, 1).eval(context));
        assertEquals("Testing bean id", 100, expressionLanguage.parse("sample.id", 1, 1).eval(context));

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    @Test
    public void testParseSimple() throws Exception
    {
        ExpressionContext context = language.createNewContext();
        Expression expression = language.parse("5 + 8", 1, 1);


        int i = expression.asInt(context);
        assertEquals(13, i);
    }

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    @Test
    public void testParseVariable() throws Exception
    {
        ExpressionContext context = language.createNewContext();
        context.put("name", "Cambridge");
        Expression expression = language.parse("#name", 1, 1);


        String name = expression.asString(context);
        assertEquals(name, "Cambridge");
    }

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    }


    public static BehaviorProvider<RepeatBehavior> getProvider() {
        return new BehaviorProvider<RepeatBehavior>() {
            public RepeatBehavior get(DynamicAttribute keyAttribute, Map<AttributeKey, Attribute> attributes, int line, int col) throws ExpressionParsingException, BehaviorInstantiationException {
                Expression number = keyAttribute.getExpression();
                return new RepeatBehavior(number, line, col);
            }
        };
    }

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                Attribute asAttribute = attributes.get(asKey);


                AttributeKey iterKey = new AttributeKey(keyAttribute.getAttributeNameSpace(), "iter");
                Attribute iterAttribute = attributes.get(iterKey);


                Expression e = keyAttribute.getExpression();
                return new ForeachBehavior(e, asAttribute == null ? null : asAttribute.getValue(), iterAttribute == null ? null : iterAttribute.getValue(), line, col);
            }
        };
    }

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cambridge.behaviors.FromBehavior

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