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

Example 16 with ELException

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

the class ELSupport method compare.

/**
 * Compare two objects, after coercing to the same type if appropriate.
 *
 * If the objects are identical, or they are equal according to
 * {@link #equals(Object, Object)} then return 0.
 *
 * If either object is a BigDecimal, then coerce both to BigDecimal first.
 * Similarly for Double(Float), BigInteger, and Long(Integer, Char, Short, Byte).
 *
 * Otherwise, check that the first object is an instance of Comparable, and compare
 * against the second object. If that is null, return 1, otherwise
 * return the result of comparing against the second object.
 *
 * Similarly, if the second object is Comparable, if the first is null, return -1,
 * else return the result of comparing against the first object.
 *
 * A null object is considered as:
 * <ul>
 * <li>ZERO when compared with Numbers</li>
 * <li>the empty string for String compares</li>
 * <li>Otherwise null is considered to be lower than anything else.</li>
 * </ul>
 *
 * @param obj0 first object
 * @param obj1 second object
 * @return -1, 0, or 1 if this object is less than, equal to, or greater than val.
 * @throws ELException if neither object is Comparable
 * @throws ClassCastException if the objects are not mutually comparable
 */
public static final int compare(final Object obj0, final Object obj1) throws ELException {
    if (obj0 == obj1 || equals(obj0, obj1)) {
        return 0;
    }
    if (isBigDecimalOp(obj0, obj1)) {
        BigDecimal bd0 = (BigDecimal) coerceToNumber(obj0, BigDecimal.class);
        BigDecimal bd1 = (BigDecimal) coerceToNumber(obj1, BigDecimal.class);
        return bd0.compareTo(bd1);
    }
    if (isDoubleOp(obj0, obj1)) {
        Double d0 = (Double) coerceToNumber(obj0, Double.class);
        Double d1 = (Double) coerceToNumber(obj1, Double.class);
        return d0.compareTo(d1);
    }
    if (isBigIntegerOp(obj0, obj1)) {
        BigInteger bi0 = (BigInteger) coerceToNumber(obj0, BigInteger.class);
        BigInteger bi1 = (BigInteger) coerceToNumber(obj1, BigInteger.class);
        return bi0.compareTo(bi1);
    }
    if (isLongOp(obj0, obj1)) {
        Long l0 = (Long) coerceToNumber(obj0, Long.class);
        Long l1 = (Long) coerceToNumber(obj1, Long.class);
        return l0.compareTo(l1);
    }
    if (obj0 instanceof String || obj1 instanceof String) {
        return coerceToString(obj0).compareTo(coerceToString(obj1));
    }
    if (obj0 instanceof Comparable<?>) {
        // checked above
        @SuppressWarnings("unchecked") final Comparable<Object> comparable = (Comparable<Object>) obj0;
        return (obj1 != null) ? comparable.compareTo(obj1) : 1;
    }
    if (obj1 instanceof Comparable<?>) {
        // checked above
        @SuppressWarnings("unchecked") final Comparable<Object> comparable = (Comparable<Object>) obj1;
        return (obj0 != null) ? -comparable.compareTo(obj0) : -1;
    }
    throw new ELException(MessageFactory.get("error.compare", obj0, obj1));
}

Example 17 with ELException

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

the class ExpressionBuilder method createNodeInternal.

private static final Node createNodeInternal(String expr) throws ELException {
    if (expr == null) {
        throw new ELException(MessageFactory.get("error.null"));
    }
    Node n = cache.get(expr);
    if (n == null) {
        try {
            n = (new ELParser(new StringReader(expr))).CompositeExpression();
            // validate composite expression
            int numChildren = n.jjtGetNumChildren();
            if (numChildren == 1) {
                n = n.jjtGetChild(0);
            } else {
                Class<?> type = null;
                Node child = null;
                for (int i = 0; i < numChildren; i++) {
                    child = n.jjtGetChild(i);
                    if (child instanceof AstLiteralExpression)
                        continue;
                    if (type == null)
                        type = child.getClass();
                    else {
                        if (!type.equals(child.getClass())) {
                            throw new ELException(MessageFactory.get("error.mixed", expr));
                        }
                    }
                }
            }
            if (n instanceof AstDeferredExpression || n instanceof AstDynamicExpression) {
                n = n.jjtGetChild(0);
            }
            cache.put(expr, n);
        } catch (Exception e) {
            throw new ELException(MessageFactory.get("error.parseFail", expr), e);
        }
    }
    return n;
}

Example 18 with ELException

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

the class AstValue method invoke.

@Override
public // Interface el.parser.Node uses a raw type (and is auto-generated)
Object invoke(EvaluationContext ctx, @SuppressWarnings("rawtypes") Class[] paramTypes, Object[] paramValues) throws ELException {
    Target t = getTarget(ctx);
    Method m = null;
    Object[] values = null;
    Class<?>[] types = null;
    if (isParametersProvided()) {
        values = ((AstMethodParameters) this.jjtGetChild(this.jjtGetNumChildren() - 1)).getParameters(ctx);
        types = getTypesFromValues(values);
    } else {
        values = paramValues;
        types = paramTypes;
    }
    m = ReflectionUtil.getMethod(t.base, t.property, types, values);
    // Handle varArgs and any coercion required
    values = convertArgs(values, m);
    Object result = null;
    try {
        result = m.invoke(t.base, values);
    } catch (IllegalAccessException iae) {
        throw new ELException(iae);
    } catch (IllegalArgumentException iae) {
        throw new ELException(iae);
    } catch (InvocationTargetException ite) {
        Throwable cause = ite.getCause();
        if (cause instanceof ThreadDeath) {
            throw (ThreadDeath) cause;
        }
        if (cause instanceof VirtualMachineError) {
            throw (VirtualMachineError) cause;
        }
        throw new ELException(cause);
    }
    return result;
}

Example 19 with ELException

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

the class TestELEvaluation method testMixedTypes.

/**
 * Test mixing ${...} and #{...} in the same expression.
 */
@Test
public void testMixedTypes() {
    // Mixing types should throw an error
    Exception e = null;
    try {
        evaluateExpression("${1+1}#{1+1}");
    } catch (ELException el) {
        e = el;
    }
    Assert.assertNotNull(e);
}

Example 20 with ELException

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

the class TestELParser method testJavaKeyWordSuffix.

@Test
public void testJavaKeyWordSuffix() {
    ExpressionFactory factory = ExpressionFactory.newInstance();
    ELContext context = new ELContextImpl();
    TesterBeanA beanA = new TesterBeanA();
    beanA.setInt("five");
    ValueExpression var = factory.createValueExpression(beanA, TesterBeanA.class);
    context.getVariableMapper().setVariable("beanA", var);
    // Should fail
    Exception e = null;
    try {
        factory.createValueExpression(context, "${beanA.int}", String.class);
    } catch (ELException ele) {
        e = ele;
    }
    Assert.assertNotNull(e);
}