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<div class="subTitle">javax.servlet.jsp</div>
<h2 title="Class JspFactory" class="title">Class JspFactory</h2>
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<li>java.lang.Object</li>
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<li>javax.servlet.jsp.JspFactory</li>
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<pre>public abstract class <span class="typeNameLabel">JspFactory</span>
extends java.lang.Object</pre>
<div class="block"><p>
The JspFactory is an abstract class that defines a number of factory
methods available to a JSP page at runtime for the purposes of creating
instances of various interfaces and classes used to support the JSP
implementation.
<p>
A conformant JSP Engine implementation will, during it's initialization
instantiate an implementation dependent subclass of this class, and make
it globally available for use by JSP implementation classes by registering
the instance created with this class via the
static <code> setDefaultFactory() </code> method.
<p>
The PageContext and the JspEngineInfo classes are the only
implementation-dependent classes that can be created from the factory.
<p>
JspFactory objects should not be used by JSP page authors.</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="../../../javax/servlet/jsp/JspFactory.html#JspFactory--">JspFactory</a></span>()</code>
<div class="block">Sole constructor.</div>
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<td class="colFirst"><code>static <a href="../../../javax/servlet/jsp/JspFactory.html" title="class in javax.servlet.jsp">JspFactory</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/servlet/jsp/JspFactory.html#getDefaultFactory--">getDefaultFactory</a></span>()</code>
<div class="block">Returns the default factory for this implementation.</div>
</td>
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<tr id="i1" class="rowColor">
<td class="colFirst"><code>abstract <a href="../../../javax/servlet/jsp/JspEngineInfo.html" title="class in javax.servlet.jsp">JspEngineInfo</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/servlet/jsp/JspFactory.html#getEngineInfo--">getEngineInfo</a></span>()</code>
<div class="block">
called to get implementation-specific information on the current JSP
engine.</div>
</td>
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<tr id="i2" class="altColor">
<td class="colFirst"><code>abstract <a href="../../../javax/servlet/jsp/JspApplicationContext.html" title="interface in javax.servlet.jsp">JspApplicationContext</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/servlet/jsp/JspFactory.html#getJspApplicationContext-javax.servlet.ServletContext-">getJspApplicationContext</a></span>(<a href="../../../javax/servlet/ServletContext.html" title="interface in javax.servlet">ServletContext</a> context)</code>
<div class="block">
Obtain the <code>JspApplicationContext</code> instance that was
associated within the passed <code>ServletContext</code> for this web
application.</div>
</td>
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<tr id="i3" class="rowColor">
<td class="colFirst"><code>abstract <a href="../../../javax/servlet/jsp/PageContext.html" title="class in javax.servlet.jsp">PageContext</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/servlet/jsp/JspFactory.html#getPageContext-javax.servlet.Servlet-javax.servlet.ServletRequest-javax.servlet.ServletResponse-java.lang.String-boolean-int-boolean-">getPageContext</a></span>(<a href="../../../javax/servlet/Servlet.html" title="interface in javax.servlet">Servlet</a> servlet,
<a href="../../../javax/servlet/ServletRequest.html" title="interface in javax.servlet">ServletRequest</a> request,
<a href="../../../javax/servlet/ServletResponse.html" title="interface in javax.servlet">ServletResponse</a> response,
java.lang.String errorPageURL,
boolean needsSession,
int buffer,
boolean autoflush)</code>
<div class="block">
obtains an instance of an implementation dependent
javax.servlet.jsp.PageContext abstract class for the calling Servlet
and currently pending request and response.</div>
</td>
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<tr id="i4" class="altColor">
<td class="colFirst"><code>abstract void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/servlet/jsp/JspFactory.html#releasePageContext-javax.servlet.jsp.PageContext-">releasePageContext</a></span>(<a href="../../../javax/servlet/jsp/PageContext.html" title="class in javax.servlet.jsp">PageContext</a> pc)</code>
<div class="block">
called to release a previously allocated PageContext object.</div>
</td>
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<tr id="i5" class="rowColor">
<td class="colFirst"><code>static void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/servlet/jsp/JspFactory.html#setDefaultFactory-javax.servlet.jsp.JspFactory-">setDefaultFactory</a></span>(<a href="../../../javax/servlet/jsp/JspFactory.html" title="class in javax.servlet.jsp">JspFactory</a> deflt)</code>
<div class="block">
set the default factory for this implementation.</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>JspFactory</h4>
<pre>public JspFactory()</pre>
<div class="block">Sole constructor. (For invocation by subclass constructors,
typically implicit.)</div>
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<h4>setDefaultFactory</h4>
<pre>public static void setDefaultFactory(<a href="../../../javax/servlet/jsp/JspFactory.html" title="class in javax.servlet.jsp">JspFactory</a> deflt)</pre>
<div class="block"><p>
set the default factory for this implementation. It is illegal for
any principal other than the JSP Engine runtime to call this method.
</p></div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>deflt</code> - The default factory implementation</dd>
</dl>
</li>
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<a name="getDefaultFactory--">
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<h4>getDefaultFactory</h4>
<pre>public static <a href="../../../javax/servlet/jsp/JspFactory.html" title="class in javax.servlet.jsp">JspFactory</a> getDefaultFactory()</pre>
<div class="block">Returns the default factory for this implementation.</div>
<dl>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>the default factory for this implementation</dd>
</dl>
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<h4>getPageContext</h4>
<pre>public abstract <a href="../../../javax/servlet/jsp/PageContext.html" title="class in javax.servlet.jsp">PageContext</a> getPageContext(<a href="../../../javax/servlet/Servlet.html" title="interface in javax.servlet">Servlet</a> servlet,
<a href="../../../javax/servlet/ServletRequest.html" title="interface in javax.servlet">ServletRequest</a> request,
<a href="../../../javax/servlet/ServletResponse.html" title="interface in javax.servlet">ServletResponse</a> response,
java.lang.String errorPageURL,
boolean needsSession,
int buffer,
boolean autoflush)</pre>
<div class="block"><p>
obtains an instance of an implementation dependent
javax.servlet.jsp.PageContext abstract class for the calling Servlet
and currently pending request and response.
</p>
<p>
This method is typically called early in the processing of the
_jspService() method of a JSP implementation class in order to
obtain a PageContext object for the request being processed.
</p>
<p>
Invoking this method shall result in the PageContext.initialize()
method being invoked. The PageContext returned is properly initialized.
</p>
<p>
All PageContext objects obtained via this method shall be released
by invoking releasePageContext().
</p></div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>servlet</code> - the requesting servlet</dd>
<dd><code>request</code> - the current request pending on the servlet</dd>
<dd><code>response</code> - the current response pending on the servlet</dd>
<dd><code>errorPageURL</code> - the URL of the error page for the requesting JSP, or
null</dd>
<dd><code>needsSession</code> - true if the JSP participates in a session</dd>
<dd><code>buffer</code> - size of buffer in bytes, <a href="../../../javax/servlet/jsp/JspWriter.html#NO_BUFFER"><code>JspWriter.NO_BUFFER</code></a>
if no buffer, <a href="../../../javax/servlet/jsp/JspWriter.html#DEFAULT_BUFFER"><code>JspWriter.DEFAULT_BUFFER</code></a>
if implementation default.</dd>
<dd><code>autoflush</code> - should the buffer autoflush to the output stream on
buffer overflow, or throw an IOException?</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>the page context</dd>
<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="../../../javax/servlet/jsp/PageContext.html" title="class in javax.servlet.jsp"><code>PageContext</code></a></dd>
</dl>
</li>
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<a name="releasePageContext-javax.servlet.jsp.PageContext-">
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<h4>releasePageContext</h4>
<pre>public abstract void releasePageContext(<a href="../../../javax/servlet/jsp/PageContext.html" title="class in javax.servlet.jsp">PageContext</a> pc)</pre>
<div class="block"><p>
called to release a previously allocated PageContext object.
Results in PageContext.release() being invoked.
This method should be invoked prior to returning from the _jspService()
method of a JSP implementation class.
</p></div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>pc</code> - A PageContext previously obtained by getPageContext()</dd>
</dl>
</li>
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<h4>getEngineInfo</h4>
<pre>public abstract <a href="../../../javax/servlet/jsp/JspEngineInfo.html" title="class in javax.servlet.jsp">JspEngineInfo</a> getEngineInfo()</pre>
<div class="block"><p>
called to get implementation-specific information on the current JSP
engine.
</p></div>
<dl>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>a JspEngineInfo object describing the current JSP engine</dd>
</dl>
</li>
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<h4>getJspApplicationContext</h4>
<pre>public abstract <a href="../../../javax/servlet/jsp/JspApplicationContext.html" title="interface in javax.servlet.jsp">JspApplicationContext</a> getJspApplicationContext(<a href="../../../javax/servlet/ServletContext.html" title="interface in javax.servlet">ServletContext</a> context)</pre>
<div class="block"><p>
Obtain the <code>JspApplicationContext</code> instance that was
associated within the passed <code>ServletContext</code> for this web
application.
</p></div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>context</code> - the current web application's <code>ServletContext</code></dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd><code>JspApplicationContext</code> instance</dd>
<dt><span class="simpleTagLabel">Since:</span></dt>
<dd>2.1</dd>
</dl>
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