Class JspFactoryImpl

java.lang.Object

javax.servlet.jsp.JspFactory

org.apache.jasper.runtime.JspFactoryImpl

public class JspFactoryImpl
extends JspFactory

Implementation of JspFactory.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
private class	JspFactoryImpl.PrivilegedGetPageContext
private class	JspFactoryImpl.PrivilegedReleasePageContext

Field Summary

Fields

Modifier and Type	Field	Description
private static Logger	log
private ThreadLocal<LinkedList<PageContext>>	pool
private static final String	SPEC_VERSION
private static final boolean	USE_POOL

Constructor Summary

Constructors

Constructor	Description
JspFactoryImpl()

Method Summary

Modifier and Type	Method	Description
JspEngineInfo	getEngineInfo()	called to get implementation-specific information on the current JSP engine.
JspApplicationContext	getJspApplicationContext(javax.servlet.ServletContext context)	Obtains the JspApplicationContext instance associated with the web application for the given ServletContext.
PageContext	getPageContext(javax.servlet.Servlet servlet, javax.servlet.ServletRequest request, javax.servlet.ServletResponse response, String errorPageURL, boolean needsSession, int bufferSize, boolean autoflush)	obtains an instance of an implementation dependent javax.servlet.jsp.PageContext abstract class for the calling Servlet and currently pending request and response.
private PageContext	internalGetPageContext(javax.servlet.Servlet servlet, javax.servlet.ServletRequest request, javax.servlet.ServletResponse response, String errorPageURL, boolean needsSession, int bufferSize, boolean autoflush)
private void	internalReleasePageContext(PageContext pc)
void	releasePageContext(PageContext pc)	called to release a previously allocated PageContext object.

Methods inherited from class JspFactory

getDefaultFactory, setDefaultFactory

Methods inherited from class Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Details

log

private static Logger log

SPEC_VERSION

private static final String SPEC_VERSION

See Also:

• Constant Field Values

USE_POOL

private static final boolean USE_POOL

pool

private ThreadLocal<LinkedList<PageContext>> pool

Constructor Details

JspFactoryImpl

public JspFactoryImpl()

Method Details

getPageContext

public PageContext getPageContext(javax.servlet.Servlet servlet,
 javax.servlet.ServletRequest request,
 javax.servlet.ServletResponse response,
 String errorPageURL,
 boolean needsSession,
 int bufferSize,
 boolean autoflush)

Description copied from class: JspFactory

obtains an instance of an implementation dependent javax.servlet.jsp.PageContext abstract class for the calling Servlet and currently pending request and response.

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.

Invoking this method shall result in the PageContext.initialize() method being invoked. The PageContext returned is properly initialized.

All PageContext objects obtained via this method shall be released by invoking releasePageContext().

Specified by:

getPageContext in class JspFactory

Parameters:

servlet - the requesting servlet

request - the current request pending on the servlet

response - the current response pending on the servlet

errorPageURL - the URL of the error page for the requesting JSP, or null

needsSession - true if the JSP participates in a session

bufferSize - size of buffer in bytes, JspWriter.NO_BUFFER if no buffer, JspWriter.DEFAULT_BUFFER if implementation default.

autoflush - should the buffer autoflush to the output stream on buffer overflow, or throw an IOException?

Returns:

the page context

See Also:

• PageContext

releasePageContext

public void releasePageContext(PageContext pc)

Description copied from class: JspFactory

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.

Specified by:

releasePageContext in class JspFactory

Parameters:

pc - A PageContext previously obtained by getPageContext()

getEngineInfo

public JspEngineInfo getEngineInfo()

Description copied from class: JspFactory

called to get implementation-specific information on the current JSP engine.

Specified by:

getEngineInfo in class JspFactory

Returns:

a JspEngineInfo object describing the current JSP engine

getJspApplicationContext

public JspApplicationContext getJspApplicationContext(javax.servlet.ServletContext context)

Description copied from class: JspFactory

Obtains the JspApplicationContext instance associated with the web application for the given ServletContext.

Specified by:

getJspApplicationContext in class JspFactory

Parameters:

context - The ServletContext for the web application the desired JspApplicationContext is associated with.

Returns:

The JspApplicationContext associated with the web application.

internalGetPageContext

private PageContext internalGetPageContext(javax.servlet.Servlet servlet,
 javax.servlet.ServletRequest request,
 javax.servlet.ServletResponse response,
 String errorPageURL,
 boolean needsSession,
 int bufferSize,
 boolean autoflush)

internalReleasePageContext

private void internalReleasePageContext(PageContext pc)