| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package javax.el; |
| |
| import java.util.Iterator; |
| |
| /** |
| * @author Jacob Hookom [jacob/hookom.net] |
| * |
| */ |
| public abstract class ELResolver { |
| |
| public static final String TYPE = "type"; |
| |
| public static final String RESOLVABLE_AT_DESIGN_TIME = "resolvableAtDesignTime"; |
| |
| /** |
| * @throws NullPointerException |
| * If the supplied context is <code>null</code> |
| * @throws PropertyNotFoundException |
| * If the base/property combination provided to the resolver is |
| * one that the resolver can handle but no match was found or a |
| * match was found but was not readable |
| * @throws ELException |
| * Wraps any exception throw whilst resolving the property |
| */ |
| public abstract Object getValue(ELContext context, Object base, |
| Object property); |
| |
| /** |
| * @since EL 2.2 |
| */ |
| public Object invoke(@SuppressWarnings("unused") ELContext context, |
| @SuppressWarnings("unused") Object base, |
| @SuppressWarnings("unused") Object method, |
| @SuppressWarnings("unused") Class<?>[] paramTypes, |
| @SuppressWarnings("unused") Object[] params) { |
| return null; |
| } |
| |
| /** |
| * @throws NullPointerException |
| * If the supplied context is <code>null</code> |
| * @throws PropertyNotFoundException |
| * If the base/property combination provided to the resolver is |
| * one that the resolver can handle but no match was found or a |
| * match was found but was not readable |
| * @throws ELException |
| * Wraps any exception throw whilst resolving the property |
| */ |
| public abstract Class<?> getType(ELContext context, Object base, |
| Object property); |
| |
| /** |
| * @throws NullPointerException |
| * If the supplied context is <code>null</code> |
| * @throws PropertyNotFoundException |
| * If the base/property combination provided to the resolver is |
| * one that the resolver can handle but no match was found |
| * @throws PropertyNotWritableException |
| * If the base/property combination provided to the resolver is |
| * one that the resolver can handle but the property was not |
| * writable |
| * @throws ELException |
| * Wraps any exception throw whilst resolving the property |
| */ |
| public abstract void setValue(ELContext context, Object base, |
| Object property, Object value); |
| |
| /** |
| * @throws NullPointerException |
| * If the supplied context is <code>null</code> |
| * @throws PropertyNotFoundException |
| * If the base/property combination provided to the resolver is |
| * one that the resolver can handle but no match was found |
| * @throws ELException |
| * Wraps any exception throw whilst resolving the property |
| */ |
| public abstract boolean isReadOnly(ELContext context, Object base, |
| Object property); |
| |
| public abstract Iterator<java.beans.FeatureDescriptor> getFeatureDescriptors(ELContext context, Object base); |
| |
| public abstract Class<?> getCommonPropertyType(ELContext context, |
| Object base); |
| |
| /** |
| * Converts the given object to the given type. This default implementation |
| * always returns <code>null</code>. |
| * |
| * @since EL 3.0 |
| */ |
| public Object convertToType(@SuppressWarnings("unused") ELContext context, |
| @SuppressWarnings("unused") Object obj, |
| @SuppressWarnings("unused") Class<?> type) { |
| return null; |
| } |
| } |