92 lines
2.7 KiB
Java
92 lines
2.7 KiB
Java
/*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership.
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* The ASF licenses this file to You under the Apache License, Version 2.0
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* (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package javax.el;
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/**
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* Base implementation that provides a minimal default implementation that is
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* intended to be extended by application developers.
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*
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* @since EL 3.0
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*/
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public abstract class BeanNameResolver {
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/**
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* Can this resolver resolve the given bean name?
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*
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* @param beanName The bean name to resolve
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*
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* @return This default implementation always returns <code>false</code>
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*/
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public boolean isNameResolved(String beanName) {
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return false;
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}
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/**
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* Returns the named bean.
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*
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* @param beanName The bean name to return
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*
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* @return This default implementation always returns <code>null</code>
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*/
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public Object getBean(String beanName) {
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return null;
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}
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/**
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* Sets a value of a bean of the given name. If the named bean does not
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* exist and {@link #canCreateBean} returns <code>true</code> then a bean
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* is created with the given value.
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*
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* @param beanName The name of the bean to be set/create
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* @param value The value of the bean to set/create
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*
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* @throws PropertyNotWritableException if the bean is read only
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*/
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public void setBeanValue(String beanName, Object value)
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throws PropertyNotWritableException {
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throw new PropertyNotWritableException();
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}
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/**
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* Is the named bean read-only?
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*
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* @param beanName The name of the bean of interest
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*
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* @return <code>true</code> if the bean is read only, otherwise
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* <code>false</code>
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*/
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public boolean isReadOnly(String beanName) {
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return true;
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}
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/**
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* Is it permitted to create a bean of the given name?
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*
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* @param beanName The name of the bean of interest
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*
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* @return <code>true</code> if the bean may be created, otherwise
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* <code>false</code>
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*/
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public boolean canCreateBean(String beanName) {
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return false;
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}
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}
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