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| <h2 title="Class ExpressionEvaluatorImpl" class="title">Class ExpressionEvaluatorImpl</h2> |
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| <li>java.lang.Object</li> |
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| <li><a href="../../../../javax/servlet/jsp/el/ExpressionEvaluator.html" title="class in javax.servlet.jsp.el">javax.servlet.jsp.el.ExpressionEvaluator</a></li> |
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| <pre>public class <span class="typeNameLabel">ExpressionEvaluatorImpl</span> |
| extends <a href="../../../../javax/servlet/jsp/el/ExpressionEvaluator.html" title="class in javax.servlet.jsp.el">ExpressionEvaluator</a></pre> |
| <div class="block"><p>This is the implementation of ExpreesioEvaluator |
| using implementation of JSP2.1.</div> |
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| <th class="colOne" scope="col">Constructor and Description</th> |
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| <td class="colOne"><code><span class="memberNameLink"><a href="../../../../org/apache/jasper/runtime/ExpressionEvaluatorImpl.html#ExpressionEvaluatorImpl-javax.servlet.jsp.PageContext-">ExpressionEvaluatorImpl</a></span>(<a href="../../../../javax/servlet/jsp/PageContext.html" title="class in javax.servlet.jsp">PageContext</a> pageContext)</code> |
| <div class="block">Constructor</div> |
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| <td class="colFirst"><code>java.lang.Object</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/jasper/runtime/ExpressionEvaluatorImpl.html#evaluate-java.lang.String-java.lang.Class-javax.servlet.jsp.el.VariableResolver-javax.servlet.jsp.el.FunctionMapper-">evaluate</a></span>(java.lang.String expression, |
| java.lang.Class expectedType, |
| <a href="../../../../javax/servlet/jsp/el/VariableResolver.html" title="interface in javax.servlet.jsp.el">VariableResolver</a> vResolver, |
| <a href="../../../../javax/servlet/jsp/el/FunctionMapper.html" title="interface in javax.servlet.jsp.el">FunctionMapper</a> fMapper)</code> |
| <div class="block">Evaluates an expression.</div> |
| </td> |
| </tr> |
| <tr id="i1" class="rowColor"> |
| <td class="colFirst"><code><a href="../../../../javax/servlet/jsp/el/Expression.html" title="class in javax.servlet.jsp.el">Expression</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/jasper/runtime/ExpressionEvaluatorImpl.html#parseExpression-java.lang.String-java.lang.Class-javax.servlet.jsp.el.FunctionMapper-">parseExpression</a></span>(java.lang.String expression, |
| java.lang.Class expectedType, |
| <a href="../../../../javax/servlet/jsp/el/FunctionMapper.html" title="interface in javax.servlet.jsp.el">FunctionMapper</a> fMapper)</code> |
| <div class="block">Prepare an expression for later evaluation.</div> |
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| <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>ExpressionEvaluatorImpl</h4> |
| <pre>public ExpressionEvaluatorImpl(<a href="../../../../javax/servlet/jsp/PageContext.html" title="class in javax.servlet.jsp">PageContext</a> pageContext)</pre> |
| <div class="block">Constructor</div> |
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| <h4>parseExpression</h4> |
| <pre>public <a href="../../../../javax/servlet/jsp/el/Expression.html" title="class in javax.servlet.jsp.el">Expression</a> parseExpression(java.lang.String expression, |
| java.lang.Class expectedType, |
| <a href="../../../../javax/servlet/jsp/el/FunctionMapper.html" title="interface in javax.servlet.jsp.el">FunctionMapper</a> fMapper) |
| throws <a href="../../../../javax/servlet/jsp/el/ELException.html" title="class in javax.servlet.jsp.el">ELException</a></pre> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from class: <code><a href="../../../../javax/servlet/jsp/el/ExpressionEvaluator.html#parseExpression-java.lang.String-java.lang.Class-javax.servlet.jsp.el.FunctionMapper-">ExpressionEvaluator</a></code></span></div> |
| <div class="block">Prepare an expression for later evaluation. This method should perform syntactic validation of the expression; if |
| in doing so it detects errors, it should raise an ELParseException.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../../../../javax/servlet/jsp/el/ExpressionEvaluator.html#parseExpression-java.lang.String-java.lang.Class-javax.servlet.jsp.el.FunctionMapper-">parseExpression</a></code> in class <code><a href="../../../../javax/servlet/jsp/el/ExpressionEvaluator.html" title="class in javax.servlet.jsp.el">ExpressionEvaluator</a></code></dd> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>expression</code> - The expression to be evaluated.</dd> |
| <dd><code>expectedType</code> - The expected type of the result of the evaluation</dd> |
| <dd><code>fMapper</code> - A FunctionMapper to resolve functions found in the expression. It can be null, in which case |
| no functions are supported for this invocation. The ExpressionEvaluator must not hold on to |
| the FunctionMapper reference after returning from <code>parseExpression()</code>. The |
| <code>Expression</code> object returned must invoke the same functions regardless of whether |
| the mappings in the provided <code>FunctionMapper</code> instance change between calling |
| <code>ExpressionEvaluator.parseExpression()</code> and <code>Expression.evaluate()</code>.</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>The Expression object encapsulating the arguments.</dd> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="../../../../javax/servlet/jsp/el/ELException.html" title="class in javax.servlet.jsp.el">ELException</a></code> - Thrown if parsing errors were found.</dd> |
| </dl> |
| </li> |
| </ul> |
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| <h4>evaluate</h4> |
| <pre>public java.lang.Object evaluate(java.lang.String expression, |
| java.lang.Class expectedType, |
| <a href="../../../../javax/servlet/jsp/el/VariableResolver.html" title="interface in javax.servlet.jsp.el">VariableResolver</a> vResolver, |
| <a href="../../../../javax/servlet/jsp/el/FunctionMapper.html" title="interface in javax.servlet.jsp.el">FunctionMapper</a> fMapper) |
| throws <a href="../../../../javax/servlet/jsp/el/ELException.html" title="class in javax.servlet.jsp.el">ELException</a></pre> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from class: <code><a href="../../../../javax/servlet/jsp/el/ExpressionEvaluator.html#evaluate-java.lang.String-java.lang.Class-javax.servlet.jsp.el.VariableResolver-javax.servlet.jsp.el.FunctionMapper-">ExpressionEvaluator</a></code></span></div> |
| <div class="block">Evaluates an expression. This method may perform some syntactic validation and, if so, it should raise an |
| ELParseException error if it encounters syntactic errors. EL evaluation errors should cause an ELException to be |
| raised.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../../../../javax/servlet/jsp/el/ExpressionEvaluator.html#evaluate-java.lang.String-java.lang.Class-javax.servlet.jsp.el.VariableResolver-javax.servlet.jsp.el.FunctionMapper-">evaluate</a></code> in class <code><a href="../../../../javax/servlet/jsp/el/ExpressionEvaluator.html" title="class in javax.servlet.jsp.el">ExpressionEvaluator</a></code></dd> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>expression</code> - The expression to be evaluated.</dd> |
| <dd><code>expectedType</code> - The expected type of the result of the evaluation</dd> |
| <dd><code>vResolver</code> - A VariableResolver instance that can be used at runtime to resolve the name of implicit |
| objects into Objects.</dd> |
| <dd><code>fMapper</code> - A FunctionMapper to resolve functions found in the expression. It can be null, in which case |
| no functions are supported for this invocation.</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>The result of the expression evaluation.</dd> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="../../../../javax/servlet/jsp/el/ELException.html" title="class in javax.servlet.jsp.el">ELException</a></code> - Thrown if the expression evaluation failed.</dd> |
| </dl> |
| </li> |
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