Examples of javax.el.ExpressionFactory$CacheValue

javax.el.ExpressionFactory
Key used to cache ExpressionFactory discovery information per class loader. The class loader reference is never {@code null}, because {@code null} tccl is handled separately.

  }
  
  private List<SortField2> getSortFields() {
    FacesContext context = FacesContext.getCurrentInstance();
    ELContext eLContext= context.getELContext();
    ExpressionFactory expressionFactory = context.getApplication().getExpressionFactory();
    String var = getVar();
    SortOrder sortOrder = getSortOrder();
    List<SortField2> sortFields2 = null;
    if (sortOrder != null) {
      SortField[] sortFields = sortOrder.getFields();
      sortFields2 = new LinkedList<SortField2>();
      for (SortField sortField : sortFields) {
        ValueExpression valueExpression = null;
        String name = sortField.getName();
        if (ELUtils.isValueReference(name)) {
          valueExpression = expressionFactory.createValueExpression(
              eLContext, name, Object.class);
        } else if (!name.startsWith(UIViewRoot.UNIQUE_ID_PREFIX)) {
          valueExpression = expressionFactory.createValueExpression(
              eLContext, "#{" + var + "." + name + "}",
              Object.class);
        }
        Ordering ordering = Ordering.UNSORTED;
        Boolean ascending = sortField.getAscending();

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public class TestValueExpressionImpl {


    @Test
    public void testGetValueReference() {
        ExpressionFactory factory = ExpressionFactory.newInstance();
        ELContext context = new ELContextImpl();
        
        TesterBeanB beanB = new TesterBeanB();
        beanB.setName("Tomcat");
        ValueExpression var =
            factory.createValueExpression(beanB, TesterBeanB.class);
        context.getVariableMapper().setVariable("beanB", var);


        ValueExpression ve = factory.createValueExpression(
                context, "${beanB.name}", String.class);


        // First check the basics work
        String result = (String) ve.getValue(context);
        assertEquals("Tomcat", result);

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        assertEquals("name", vr.getProperty());
    }


    @Test
    public void testBug49345() {
        ExpressionFactory factory = ExpressionFactory.newInstance();
        ELContext context = new ELContextImpl();
        
        TesterBeanA beanA = new TesterBeanA();
        TesterBeanB beanB = new TesterBeanB();
        beanB.setName("Tomcat");
        beanA.setBean(beanB);
        
        ValueExpression var =
            factory.createValueExpression(beanA, TesterBeanA.class);
        context.getVariableMapper().setVariable("beanA", var);


        ValueExpression ve = factory.createValueExpression(
                context, "${beanA.bean.name}", String.class);


        // First check the basics work
        String result = (String) ve.getValue(context);
        assertEquals("Tomcat", result);

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        assertEquals("name", vr.getProperty());
    }


    @Test
    public void testBug50105() {
        ExpressionFactory factory = ExpressionFactory.newInstance();
        ELContext context = new ELContextImpl();
        
        TesterEnum testEnum = TesterEnum.APPLE;
        
        ValueExpression var =
            factory.createValueExpression(testEnum, TesterEnum.class);
        context.getVariableMapper().setVariable("testEnum", var);


        // When coercing an Enum to a String, name() should always be used.
        ValueExpression ve1 = factory.createValueExpression(
                context, "${testEnum}", String.class);
        String result1 = (String) ve1.getValue(context);
        assertEquals("APPLE", result1);
        
        ValueExpression ve2 = factory.createValueExpression(
                context, "foo${testEnum}bar", String.class);
        String result2 = (String) ve2.getValue(context);
        assertEquals("fooAPPLEbar", result2);
    }

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        assertEquals("fooAPPLEbar", result2);
    }


    @Test
    public void testBug51177ObjectMap() {
        ExpressionFactory factory = ExpressionFactory.newInstance();
        ELContext context = new ELContextImpl();
        
        Object o1 = "String value";
        Object o2 = Integer.valueOf(32);


        Map<Object,Object> map = new HashMap<Object,Object>();
        map.put("key1", o1);
        map.put("key2", o2);
        
        ValueExpression var =
            factory.createValueExpression(map, Map.class);
        context.getVariableMapper().setVariable("map", var);


        ValueExpression ve1 = factory.createValueExpression(
                context, "${map.key1}", Object.class);
        ve1.setValue(context, o2);
        assertEquals(o2, ve1.getValue(context));
        
        ValueExpression ve2 = factory.createValueExpression(
                context, "${map.key2}", Object.class);
        ve2.setValue(context, o1);
        assertEquals(o1, ve2.getValue(context));
    }

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        assertEquals(o1, ve2.getValue(context));
    }


    @Test
    public void testBug51177ObjectList() {
        ExpressionFactory factory = ExpressionFactory.newInstance();
        ELContext context = new ELContextImpl();
        
        Object o1 = "String value";
        Object o2 = Integer.valueOf(32);


        List<Object> list = new ArrayList<Object>();
        list.add(0, o1);
        list.add(1, o2);
        
        ValueExpression var =
            factory.createValueExpression(list, List.class);
        context.getVariableMapper().setVariable("list", var);


        ValueExpression ve1 = factory.createValueExpression(
                context, "${list[0]}", Object.class);
        ve1.setValue(context, o2);
        assertEquals(o2, ve1.getValue(context));
        
        ValueExpression ve2 = factory.createValueExpression(
                context, "${list[1]}", Object.class);
        ve2.setValue(context, o1);
        assertEquals(o1, ve2.getValue(context));
    }

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    /**
     * Test returning an empty list as a bean property.
     */
    @Test
    public void testBug51544Bean() throws Exception {
        ExpressionFactory factory = ExpressionFactory.newInstance();
        ELContext context = new ELContextImpl();
        
        TesterBeanA beanA = new TesterBeanA();
        beanA.setValList(Collections.emptyList());
        
        ValueExpression var =
            factory.createValueExpression(beanA, TesterBeanA.class);
        context.getVariableMapper().setVariable("beanA", var);


        ValueExpression ve = factory.createValueExpression(
                context, "${beanA.valList.size()}", Integer.class);


        Integer result = (Integer) ve.getValue(context);
        assertEquals(Integer.valueOf(0), result);
    }

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    /**
     * Test using list directly as variable.
     */
    @Test
    public void testBug51544Direct() throws Exception {
        ExpressionFactory factory = ExpressionFactory.newInstance();
        ELContext context = new ELContextImpl();
        
        List<?> list = Collections.emptyList();
        
        ValueExpression var =
            factory.createValueExpression(list, List.class);
        context.getVariableMapper().setVariable("list", var);


        ValueExpression ve = factory.createValueExpression(
                context, "${list.size()}", Integer.class);


        Integer result = (Integer) ve.getValue(context);
        assertEquals(Integer.valueOf(0), result);
    }

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        String elResult = null;


        // Don't try and evaluate expressions that depend on variables or functions
        if (expected != null) {
            try {
                ExpressionFactory factory = ExpressionFactory.newInstance();
                ELContext context = new ELContextImpl();
                ValueExpression ve = factory.createValueExpression(context, input, String.class);
                elResult = ve.getValue(context).toString();
                Assert.assertEquals(expected, elResult);
            } catch (ELException ele) {
                elException = ele;
            }

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            validateFunctions(el, n);


            // test it out
            ELContextImpl ctx = new ELContextImpl();
            ctx.setFunctionMapper(this.getFunctionMapper(el));
            ExpressionFactory ef = this.pageInfo.getExpressionFactory();
            try {
                ef.createValueExpression(ctx, expr, Object.class);
            } catch (ELException e) {


            }
        }

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