81 lines
2.7 KiB
Java
81 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.servlet.jsp;
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import javax.el.ELContextListener;
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import javax.el.ELResolver;
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import javax.el.ExpressionFactory;
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/**
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* <p>
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* Stores <i>application</i>-scoped information for the JSP container.
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* </p>
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*
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* @since 2.1
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*/
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public interface JspApplicationContext {
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/**
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* Registers an <code>ELContextListener</code> that will be notified
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* whenever a new <code>ELContext</code> is created.
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* <p>
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* At the very least, any <code>ELContext</code> instantiated will have
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* reference to the <code>JspContext</code> under
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* <code>JspContext.class</code>.
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*
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* @param listener The listener to add
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*/
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public void addELContextListener(ELContextListener listener);
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/**
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* <p>
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* Adds an <code>ELResolver</code> to the chain of EL variable and property
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* management within JSP pages and Tag files.
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* </p>
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* <p>
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* JSP has a default set of ELResolvers to chain for all EL evaluation:
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* </p>
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* <ul>
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* <li><code>ImplicitObjectELResolver</code></li>
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* <li><code>ELResolver</code> instances registered with this method</li>
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* <li><code>MapELResolver</code></li>
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* <li><code>ListELResolver</code></li>
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* <li><code>ArrayELResolver</code></li>
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* <li><code>BeanELResolver</code></li>
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* <li><code>ScopedAttributeELResolver</code></li>
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* </ul>
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*
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* @param resolver
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* an additional resolver
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* @throws IllegalStateException
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* if called after the application's
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* <code>ServletContextListeners</code> have been initialized.
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*/
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public void addELResolver(ELResolver resolver) throws IllegalStateException;
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/**
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* <p>
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* Returns the JSP container's <code>ExpressionFactory</code> implementation
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* for EL use.
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* </p>
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*
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* @return an <code>ExpressionFactory</code> implementation
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*/
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public ExpressionFactory getExpressionFactory();
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}
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