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| <h2 title="Class JspApplicationContextImpl" class="title">Class JspApplicationContextImpl</h2> |
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| <ul class="inheritance"> |
| <li>java.lang.Object</li> |
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| <ul class="inheritance"> |
| <li>org.apache.jasper.runtime.JspApplicationContextImpl</li> |
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| <dt>All Implemented Interfaces:</dt> |
| <dd><a href="../../../../javax/servlet/jsp/JspApplicationContext.html" title="interface in javax.servlet.jsp">JspApplicationContext</a></dd> |
| </dl> |
| <hr> |
| <br> |
| <pre>public class <span class="typeNameLabel">JspApplicationContextImpl</span> |
| extends java.lang.Object |
| implements <a href="../../../../javax/servlet/jsp/JspApplicationContext.html" title="interface in javax.servlet.jsp">JspApplicationContext</a></pre> |
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| <tr> |
| <th class="colOne" scope="col">Constructor and Description</th> |
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| <tr class="altColor"> |
| <td class="colOne"><code><span class="memberNameLink"><a href="../../../../org/apache/jasper/runtime/JspApplicationContextImpl.html#JspApplicationContextImpl-javax.servlet.ServletContext-">JspApplicationContextImpl</a></span>(<a href="../../../../javax/servlet/ServletContext.html" title="interface in javax.servlet">ServletContext</a> context)</code> </td> |
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| <th class="colFirst" scope="col">Modifier and Type</th> |
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| <tr id="i0" class="altColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/jasper/runtime/JspApplicationContextImpl.html#addELContextListener-ELContextListener-">addELContextListener</a></span>(ELContextListener listener)</code> |
| <div class="block">Registers a <code>ELContextListener</code>s so that context objects can be added whenever a new |
| <code>ELContext</code> is created.</div> |
| </td> |
| </tr> |
| <tr id="i1" class="rowColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/jasper/runtime/JspApplicationContextImpl.html#addELResolver-ELResolver-">addELResolver</a></span>(ELResolver resolver)</code> |
| <div class="block">Adds an <code>ELResolver</code> to affect the way EL variables and properties are resolved for EL expressions |
| appearing in JSP pages and tag files.</div> |
| </td> |
| </tr> |
| <tr id="i2" class="altColor"> |
| <td class="colFirst"><code>protected ELContext</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/jasper/runtime/JspApplicationContextImpl.html#createELContext-ELResolver-">createELContext</a></span>(ELResolver resolver)</code> </td> |
| </tr> |
| <tr id="i3" class="rowColor"> |
| <td class="colFirst"><code>protected static <a href="../../../../org/apache/jasper/runtime/JspApplicationContextImpl.html" title="class in org.apache.jasper.runtime">JspApplicationContextImpl</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/jasper/runtime/JspApplicationContextImpl.html#findJspApplicationContext-javax.servlet.ServletContext-">findJspApplicationContext</a></span>(<a href="../../../../javax/servlet/ServletContext.html" title="interface in javax.servlet">ServletContext</a> context)</code> </td> |
| </tr> |
| <tr id="i4" class="altColor"> |
| <td class="colFirst"><code>protected java.util.Iterator<ELResolver></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/jasper/runtime/JspApplicationContextImpl.html#getELResolvers--">getELResolvers</a></span>()</code> </td> |
| </tr> |
| <tr id="i5" class="rowColor"> |
| <td class="colFirst"><code>ExpressionFactory</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/jasper/runtime/JspApplicationContextImpl.html#getExpressionFactory--">getExpressionFactory</a></span>()</code> |
| <div class="block">Returns a factory used to create <code>ValueExpression</code>s and <code>MethodExpression</code>s so that EL |
| expressions can be parsed and evaluated.</div> |
| </td> |
| </tr> |
| <tr id="i6" class="altColor"> |
| <td class="colFirst"><code>static void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/jasper/runtime/JspApplicationContextImpl.html#removeJspApplicationContext-javax.servlet.ServletContext-">removeJspApplicationContext</a></span>(<a href="../../../../javax/servlet/ServletContext.html" title="interface in javax.servlet">ServletContext</a> context)</code> </td> |
| </tr> |
| <tr id="i7" class="rowColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/jasper/runtime/JspApplicationContextImpl.html#setExpressionFactory-ExpressionFactory-">setExpressionFactory</a></span>(ExpressionFactory expressionFactory)</code> </td> |
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| </a> |
| <h3>Methods inherited from class java.lang.Object</h3> |
| <code>clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait</code></li> |
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| <h4>JspApplicationContextImpl</h4> |
| <pre>public JspApplicationContextImpl(<a href="../../../../javax/servlet/ServletContext.html" title="interface in javax.servlet">ServletContext</a> context)</pre> |
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| <h4>addELResolver</h4> |
| <pre>public void addELResolver(ELResolver resolver)</pre> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from interface: <code><a href="../../../../javax/servlet/jsp/JspApplicationContext.html#addELResolver-ELResolver-">JspApplicationContext</a></code></span></div> |
| <div class="block">Adds an <code>ELResolver</code> to affect the way EL variables and properties are resolved for EL expressions |
| appearing in JSP pages and tag files. |
| |
| <p> |
| For example, in the EL expression ${employee.lastName}, an <code>ELResolver</code> determines what object |
| "employee" references and how to find its "lastName" property. |
| </p> |
| |
| <p> |
| When evaluating an expression, the JSP container will consult a set of standard resolvers as well as any |
| resolvers registered via this method. The set of resolvers are consulted in the following order: |
| </p> |
| <ul> |
| <li><a href="../../../../javax/servlet/jsp/el/ImplicitObjectELResolver.html" title="class in javax.servlet.jsp.el"><code>ImplicitObjectELResolver</code></a></li> |
| <li><code>ELResolver</code>s registered via this method, in the order in which they are registered.</li> |
| <li><code>javax.el.MapELResolver</code></li> |
| <li><code>javax.el.ListELResolver</code></li> |
| <li><code>javax.el.ArrayELResolver</code></li> |
| <li><code>javax.el.BeanELResolver</code></li> |
| <li><a href="../../../../javax/servlet/jsp/el/ScopedAttributeELResolver.html" title="class in javax.servlet.jsp.el"><code>ScopedAttributeELResolver</code></a></li> |
| </ul> |
| |
| <p> |
| It is illegal to register an <code>ELResolver</code> after the application has received any request from the |
| client. If an attempt is made to register an <code>ELResolver</code> after that time, an |
| <code>IllegalStateException</code> is thrown. |
| </p> |
| <p> |
| This restriction is in place to allow the JSP container to optimize for the common case where no additional |
| <code>ELResolver</code>s are in the chain, aside from the standard ones. It is permissible to add |
| <code>ELResolver</code>s before or after initialization to a <code>CompositeELResolver</code> that is already in |
| the chain. |
| </p> |
| |
| <p> |
| It is not possible to remove an <code>ELResolver</code> registered with this method, once it has been registered. |
| </p></div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../../../../javax/servlet/jsp/JspApplicationContext.html#addELResolver-ELResolver-">addELResolver</a></code> in interface <code><a href="../../../../javax/servlet/jsp/JspApplicationContext.html" title="interface in javax.servlet.jsp">JspApplicationContext</a></code></dd> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>resolver</code> - The new <code>ELResolver</code></dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="getExpressionFactory--"> |
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| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>getExpressionFactory</h4> |
| <pre>public ExpressionFactory getExpressionFactory()</pre> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from interface: <code><a href="../../../../javax/servlet/jsp/JspApplicationContext.html#getExpressionFactory--">JspApplicationContext</a></code></span></div> |
| <div class="block">Returns a factory used to create <code>ValueExpression</code>s and <code>MethodExpression</code>s so that EL |
| expressions can be parsed and evaluated.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../../../../javax/servlet/jsp/JspApplicationContext.html#getExpressionFactory--">getExpressionFactory</a></code> in interface <code><a href="../../../../javax/servlet/jsp/JspApplicationContext.html" title="interface in javax.servlet.jsp">JspApplicationContext</a></code></dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>A concrete implementation of the an <code>ExpressionFactory</code>.</dd> |
| </dl> |
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| <h4>setExpressionFactory</h4> |
| <pre>public void setExpressionFactory(ExpressionFactory expressionFactory)</pre> |
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| <h4>addELContextListener</h4> |
| <pre>public void addELContextListener(ELContextListener listener)</pre> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from interface: <code><a href="../../../../javax/servlet/jsp/JspApplicationContext.html#addELContextListener-ELContextListener-">JspApplicationContext</a></code></span></div> |
| <div class="block">Registers a <code>ELContextListener</code>s so that context objects can be added whenever a new |
| <code>ELContext</code> is created. |
| |
| <p> |
| At a minimum, the <code>ELContext</code> objects created will contain a reference to the <code>JspContext</code> |
| for this request, which is added by the JSP container. This is sufficient for all the default |
| <code>ELResolver</code>s listed in <a href="../../../../javax/servlet/jsp/JspApplicationContext.html#addELResolver-ELResolver-"><code>JspApplicationContext.addELResolver(ELResolver)</code></a>. Note that <code>JspContext.class</code> is used as the |
| key to ELContext.putContext() for the <code>JspContext</code> object reference. |
| </p> |
| |
| <p> |
| This method is generally used by frameworks and applications that register their own <code>ELResolver</code> that |
| needs context other than <code>JspContext</code>. The listener will typically add the necessary context to the |
| <code>ELContext</code> provided in the event object. Registering a listener that adds context allows the |
| <code>ELResolver</code>s in the stack to access the context they need when they do a resolution. |
| </p></div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../../../../javax/servlet/jsp/JspApplicationContext.html#addELContextListener-ELContextListener-">addELContextListener</a></code> in interface <code><a href="../../../../javax/servlet/jsp/JspApplicationContext.html" title="interface in javax.servlet.jsp">JspApplicationContext</a></code></dd> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>listener</code> - The listener to be notified when a new <code>ELContext</code> is created.</dd> |
| </dl> |
| </li> |
| </ul> |
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| <h4>createELContext</h4> |
| <pre>protected ELContext createELContext(ELResolver resolver)</pre> |
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| <h4>findJspApplicationContext</h4> |
| <pre>protected static <a href="../../../../org/apache/jasper/runtime/JspApplicationContextImpl.html" title="class in org.apache.jasper.runtime">JspApplicationContextImpl</a> findJspApplicationContext(<a href="../../../../javax/servlet/ServletContext.html" title="interface in javax.servlet">ServletContext</a> context)</pre> |
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| <h4>removeJspApplicationContext</h4> |
| <pre>public static void removeJspApplicationContext(<a href="../../../../javax/servlet/ServletContext.html" title="interface in javax.servlet">ServletContext</a> context)</pre> |
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| <h4>getELResolvers</h4> |
| <pre>protected java.util.Iterator<ELResolver> getELResolvers()</pre> |
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