Examples with ExpressionFactory javax.el.ExpressionFactory used on opensource projects

Example 21 with ExpressionFactory

use of javax.el.ExpressionFactory in project tomcat70 by apache.

the class PageContextImpl method proprietaryEvaluate.

/**
 * Proprietary method to evaluate EL expressions. XXX - This method should
 * go away once the EL interpreter moves out of JSTL and into its own
 * project. For now, this is necessary because the standard machinery is too
 * slow.
 *
 * @param expression
 *            The expression to be evaluated
 * @param expectedType
 *            The expected resulting type
 * @param pageContext
 *            The page context
 * @param functionMap
 *            Maps prefix and name to Method
 * @return The result of the evaluation
 */
public static Object proprietaryEvaluate(final String expression, final Class<?> expectedType, final PageContext pageContext, final ProtectedFunctionMapper functionMap, final boolean escape) throws ELException {
    final ExpressionFactory exprFactory = jspf.getJspApplicationContext(pageContext.getServletContext()).getExpressionFactory();
    ELContext ctx = pageContext.getELContext();
    ELContextImpl ctxImpl;
    if (ctx instanceof ELContextWrapper) {
        ctxImpl = (ELContextImpl) ((ELContextWrapper) ctx).getWrappedELContext();
    } else {
        ctxImpl = (ELContextImpl) ctx;
    }
    ctxImpl.setFunctionMapper(functionMap);
    ValueExpression ve = exprFactory.createValueExpression(ctx, expression, expectedType);
    return ve.getValue(ctx);
}

Example 22 with ExpressionFactory

use of javax.el.ExpressionFactory in project tomcat70 by apache.

the class TestValueExpressionImpl method testBug49345.

@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);
    Assert.assertEquals("Tomcat", result);
    // Now check the value reference
    ValueReference vr = ve.getValueReference(context);
    Assert.assertNotNull(vr);
    Assert.assertEquals(beanB, vr.getBase());
    Assert.assertEquals("name", vr.getProperty());
}

Example 23 with ExpressionFactory

use of javax.el.ExpressionFactory in project tomcat70 by apache.

the class TestValueExpressionImpl method testBug50105.

@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, "${testEnum}", String.class);
    String result1 = (String) ve1.getValue(context);
    Assert.assertEquals("APPLE", result1);
    ValueExpression ve2 = factory.createValueExpression(context, "foo${testEnum}bar", String.class);
    String result2 = (String) ve2.getValue(context);
    Assert.assertEquals("fooAPPLEbar", result2);
}

Example 24 with ExpressionFactory

use of javax.el.ExpressionFactory in project tomcat70 by apache.

the class TestValueExpressionImpl method testBug51544Direct.

/**
 * 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);
    Assert.assertEquals(Integer.valueOf(0), result);
}

Example 25 with ExpressionFactory

use of javax.el.ExpressionFactory in project tomcat70 by apache.

the class TestValueExpressionImpl method testBug51544Bean.

/**
 * 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);
    Assert.assertEquals(Integer.valueOf(0), result);
}