org.apache.jasper.runtime

Class PageContextImpl

java.lang.Object

javax.servlet.jsp.JspContext

javax.servlet.jsp.PageContext

org.apache.jasper.runtime.PageContextImpl

public class PageContextImpl
extends javax.servlet.jsp.PageContext

Implementation of the PageContext class from the JSP spec.

Field Summary

Fields

Modifier and Type	Field and Description
private java.util.HashMap<java.lang.String,java.lang.Object>	attributes
private JspWriterImpl	baseOut
private int	bufferSize
private javax.servlet.ServletConfig	config
private javax.servlet.ServletContext	context
private int	depth
private javax.el.ELContext	elContext
private javax.el.ELResolver	elResolver
private java.lang.String	errorPageURL
private javax.servlet.jsp.JspFactory	factory
private boolean	isNametableInitialized
private JspApplicationContextImpl	jspApplicationContext
private static java.util.logging.Logger	log
private boolean	needsSession
private javax.servlet.jsp.JspWriter	out
private BodyContentImpl[]	outs
private javax.servlet.ServletRequest	request
private javax.servlet.ServletResponse	response
private javax.servlet.Servlet	servlet
private javax.servlet.http.HttpSession	session

Fields inherited from class javax.servlet.jsp.PageContext

APPLICATION, APPLICATION_SCOPE, CONFIG, EXCEPTION, OUT, PAGE, PAGE_SCOPE, PAGECONTEXT, REQUEST, REQUEST_SCOPE, RESPONSE, SESSION, SESSION_SCOPE

Constructor Summary

Constructors

Constructor and Description
PageContextImpl(javax.servlet.jsp.JspFactory factory)

Method Summary

Modifier and Type	Method and Description
private void	_initialize(javax.servlet.Servlet servlet, javax.servlet.ServletRequest request, javax.servlet.ServletResponse response, java.lang.String errorPageURL, boolean needsSession, int bufferSize, boolean autoFlush)
private java.lang.Object	doFindAttribute(java.lang.String name)
private java.lang.Object	doGetAttribute(java.lang.String name)
private java.lang.Object	doGetAttribute(java.lang.String name, int scope)
private java.util.Enumeration<java.lang.String>	doGetAttributeNamesInScope(int scope)
private int	doGetAttributeScope(java.lang.String name)
private void	doHandlePageException(java.lang.Throwable t)
private void	doRemoveAttribute(java.lang.String name)
private void	doRemoveAttribute(java.lang.String name, int scope)
private void	doSetAttribute(java.lang.String name, java.lang.Object attribute)
private void	doSetAttribute(java.lang.String name, java.lang.Object o, int scope)
static java.lang.Object	evaluateExpression(java.lang.String expression, java.lang.Class expectedType, javax.servlet.jsp.PageContext pageContext, ProtectedFunctionMapper functionMap) Evaluates an EL expression
java.lang.Object	findAttribute(java.lang.String name)
void	forward(java.lang.String relativeUrlPath)
private java.lang.String	getAbsolutePathRelativeToContext(java.lang.String relativeUrlPath)
java.lang.Object	getAttribute(java.lang.String name)
java.lang.Object	getAttribute(java.lang.String name, int scope)
java.util.Enumeration<java.lang.String>	getAttributeNamesInScope(int scope)
int	getAttributesScope(java.lang.String name)
javax.el.ELContext	getELContext()
private javax.el.ELResolver	getELResolver()
java.lang.Exception	getException() Returns the exception associated with this page context, if any.
javax.servlet.jsp.el.ExpressionEvaluator	getExpressionEvaluator() Provides programmatic access to the ExpressionEvaluator.
private static javax.el.ExpressionFactory	getExpressionFactory(javax.servlet.jsp.PageContext pageContext)
(package private) JspApplicationContextImpl	getJspApplicationContext()
static javax.el.MethodExpression	getMethodExpression(java.lang.String expression, javax.servlet.jsp.PageContext pageContext, javax.el.FunctionMapper functionMap, java.lang.Class expectedType, java.lang.Class[] paramTypes)
javax.servlet.jsp.JspWriter	getOut()
java.lang.Object	getPage()
javax.servlet.ServletRequest	getRequest()
javax.servlet.ServletResponse	getResponse()
javax.servlet.Servlet	getServlet()
javax.servlet.ServletConfig	getServletConfig()
javax.servlet.ServletContext	getServletContext()
javax.servlet.http.HttpSession	getSession()
static javax.el.ValueExpression	getValueExpression(java.lang.String expression, javax.servlet.jsp.PageContext pageContext, java.lang.Class expectedType, javax.el.FunctionMapper functionMap)
javax.servlet.jsp.el.VariableResolver	getVariableResolver()
void	handlePageException(java.lang.Exception ex)
void	handlePageException(java.lang.Throwable t)
void	include(java.lang.String relativeUrlPath)
void	include(java.lang.String relativeUrlPath, boolean flush)
void	initialize(javax.servlet.Servlet servlet, javax.servlet.ServletRequest request, javax.servlet.ServletResponse response, java.lang.String errorPageURL, boolean needsSession, int bufferSize, boolean autoFlush)
private void	initializePageScopeNameTable()
javax.servlet.jsp.JspWriter	popBody()
javax.servlet.jsp.tagext.BodyContent	pushBody()
javax.servlet.jsp.JspWriter	pushBody(java.io.Writer writer)
void	release()
void	removeAttribute(java.lang.String name)
void	removeAttribute(java.lang.String name, int scope)
void	setAttribute(java.lang.String name, java.lang.Object attribute)
void	setAttribute(java.lang.String name, java.lang.Object o, int scope)
static void	setMethodVariable(javax.servlet.jsp.PageContext pageContext, java.lang.String variable, javax.el.MethodExpression expression)
static void	setValueVariable(javax.servlet.jsp.PageContext pageContext, java.lang.String variable, javax.el.ValueExpression expression)

Methods inherited from class javax.servlet.jsp.PageContext

getErrorData

Methods inherited from class java.lang.Object

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

Field Detail

log

private static java.util.logging.Logger log

outs

private BodyContentImpl[] outs

depth

private int depth

servlet

private javax.servlet.Servlet servlet

config

private javax.servlet.ServletConfig config

context

private javax.servlet.ServletContext context

factory

private javax.servlet.jsp.JspFactory factory

needsSession

private boolean needsSession

errorPageURL

private java.lang.String errorPageURL

bufferSize

private int bufferSize

jspApplicationContext

private JspApplicationContextImpl jspApplicationContext

elResolver

private javax.el.ELResolver elResolver

elContext

private javax.el.ELContext elContext

attributes

private java.util.HashMap<java.lang.String,java.lang.Object> attributes

isNametableInitialized

private boolean isNametableInitialized

request

private javax.servlet.ServletRequest request

response

private javax.servlet.ServletResponse response

session

private javax.servlet.http.HttpSession session

out

private javax.servlet.jsp.JspWriter out

baseOut

private JspWriterImpl baseOut

Constructor Detail

PageContextImpl

PageContextImpl(javax.servlet.jsp.JspFactory factory)

Method Detail

initialize

public void initialize(javax.servlet.Servlet servlet,
                       javax.servlet.ServletRequest request,
                       javax.servlet.ServletResponse response,
                       java.lang.String errorPageURL,
                       boolean needsSession,
                       int bufferSize,
                       boolean autoFlush)
                throws java.io.IOException

Specified by:

initialize in class javax.servlet.jsp.PageContext

Throws:

java.io.IOException

_initialize

private void _initialize(javax.servlet.Servlet servlet,
                         javax.servlet.ServletRequest request,
                         javax.servlet.ServletResponse response,
                         java.lang.String errorPageURL,
                         boolean needsSession,
                         int bufferSize,
                         boolean autoFlush)
                  throws java.io.IOException

Throws:

java.io.IOException

initializePageScopeNameTable

private void initializePageScopeNameTable()

release

public void release()

Specified by:

release in class javax.servlet.jsp.PageContext

getAttribute

public java.lang.Object getAttribute(java.lang.String name)

Specified by:

getAttribute in class javax.servlet.jsp.JspContext

doGetAttribute

private java.lang.Object doGetAttribute(java.lang.String name)

getAttribute

public java.lang.Object getAttribute(java.lang.String name,
                                     int scope)

Specified by:

getAttribute in class javax.servlet.jsp.JspContext

doGetAttribute

private java.lang.Object doGetAttribute(java.lang.String name,
                                        int scope)

setAttribute

public void setAttribute(java.lang.String name,
                         java.lang.Object attribute)

Specified by:

setAttribute in class javax.servlet.jsp.JspContext

doSetAttribute

private void doSetAttribute(java.lang.String name,
                            java.lang.Object attribute)

setAttribute

public void setAttribute(java.lang.String name,
                         java.lang.Object o,
                         int scope)

Specified by:

setAttribute in class javax.servlet.jsp.JspContext

doSetAttribute

private void doSetAttribute(java.lang.String name,
                            java.lang.Object o,
                            int scope)

removeAttribute

public void removeAttribute(java.lang.String name,
                            int scope)

Specified by:

removeAttribute in class javax.servlet.jsp.JspContext

doRemoveAttribute

private void doRemoveAttribute(java.lang.String name,
                               int scope)

getAttributesScope

public int getAttributesScope(java.lang.String name)

Specified by:

getAttributesScope in class javax.servlet.jsp.JspContext

doGetAttributeScope

private int doGetAttributeScope(java.lang.String name)

findAttribute

public java.lang.Object findAttribute(java.lang.String name)

Specified by:

findAttribute in class javax.servlet.jsp.JspContext

doFindAttribute

private java.lang.Object doFindAttribute(java.lang.String name)

getAttributeNamesInScope

public java.util.Enumeration<java.lang.String> getAttributeNamesInScope(int scope)

Specified by:

getAttributeNamesInScope in class javax.servlet.jsp.JspContext

doGetAttributeNamesInScope

private java.util.Enumeration<java.lang.String> doGetAttributeNamesInScope(int scope)

removeAttribute

public void removeAttribute(java.lang.String name)

Specified by:

removeAttribute in class javax.servlet.jsp.JspContext

doRemoveAttribute

private void doRemoveAttribute(java.lang.String name)

getOut

public javax.servlet.jsp.JspWriter getOut()

Specified by:

getOut in class javax.servlet.jsp.JspContext

getSession

public javax.servlet.http.HttpSession getSession()

Specified by:

getSession in class javax.servlet.jsp.PageContext

getServlet

public javax.servlet.Servlet getServlet()

getServletConfig

public javax.servlet.ServletConfig getServletConfig()

Specified by:

getServletConfig in class javax.servlet.jsp.PageContext

getServletContext

public javax.servlet.ServletContext getServletContext()

Specified by:

getServletContext in class javax.servlet.jsp.PageContext

getRequest

public javax.servlet.ServletRequest getRequest()

Specified by:

getRequest in class javax.servlet.jsp.PageContext

getResponse

public javax.servlet.ServletResponse getResponse()

Specified by:

getResponse in class javax.servlet.jsp.PageContext

getException

public java.lang.Exception getException()

Returns the exception associated with this page context, if any. Added wrapping for Throwables to avoid ClassCastException (see Bugzilla 31171 for details).

Specified by:

getException in class javax.servlet.jsp.PageContext

Returns:

The Exception associated with this page context, if any.

getPage

public java.lang.Object getPage()

Specified by:

getPage in class javax.servlet.jsp.PageContext

getAbsolutePathRelativeToContext

private final java.lang.String getAbsolutePathRelativeToContext(java.lang.String relativeUrlPath)

include

public void include(java.lang.String relativeUrlPath)
             throws javax.servlet.ServletException,
                    java.io.IOException

Specified by:

include in class javax.servlet.jsp.PageContext

Throws:

javax.servlet.ServletException

java.io.IOException

include

public void include(java.lang.String relativeUrlPath,
                    boolean flush)
             throws javax.servlet.ServletException,
                    java.io.IOException

Specified by:

include in class javax.servlet.jsp.PageContext

Throws:

javax.servlet.ServletException

java.io.IOException

getVariableResolver

public javax.servlet.jsp.el.VariableResolver getVariableResolver()

Specified by:

getVariableResolver in class javax.servlet.jsp.JspContext

getELResolver

private javax.el.ELResolver getELResolver()

getELContext

public javax.el.ELContext getELContext()

Specified by:

getELContext in class javax.servlet.jsp.JspContext

getJspApplicationContext

JspApplicationContextImpl getJspApplicationContext()

forward

public void forward(java.lang.String relativeUrlPath)
             throws javax.servlet.ServletException,
                    java.io.IOException

Specified by:

forward in class javax.servlet.jsp.PageContext

Throws:

javax.servlet.ServletException

java.io.IOException

pushBody

public javax.servlet.jsp.tagext.BodyContent pushBody()

Overrides:

pushBody in class javax.servlet.jsp.PageContext

pushBody

public javax.servlet.jsp.JspWriter pushBody(java.io.Writer writer)

Overrides:

pushBody in class javax.servlet.jsp.JspContext

popBody

public javax.servlet.jsp.JspWriter popBody()

Overrides:

popBody in class javax.servlet.jsp.JspContext

getExpressionEvaluator

public javax.servlet.jsp.el.ExpressionEvaluator getExpressionEvaluator()

Provides programmatic access to the ExpressionEvaluator. The JSP Container must return a valid instance of an ExpressionEvaluator that can parse EL expressions.

Specified by:

getExpressionEvaluator in class javax.servlet.jsp.JspContext

handlePageException

public void handlePageException(java.lang.Exception ex)
                         throws java.io.IOException,
                                javax.servlet.ServletException

Specified by:

handlePageException in class javax.servlet.jsp.PageContext

Throws:

java.io.IOException

javax.servlet.ServletException

handlePageException

public void handlePageException(java.lang.Throwable t)
                         throws java.io.IOException,
                                javax.servlet.ServletException

Specified by:

handlePageException in class javax.servlet.jsp.PageContext

Throws:

java.io.IOException

javax.servlet.ServletException

doHandlePageException

private void doHandlePageException(java.lang.Throwable t)
                            throws java.io.IOException,
                                   javax.servlet.ServletException

Throws:

java.io.IOException

javax.servlet.ServletException

getExpressionFactory

private static javax.el.ExpressionFactory getExpressionFactory(javax.servlet.jsp.PageContext pageContext)

evaluateExpression

public static java.lang.Object evaluateExpression(java.lang.String expression,
                                                  java.lang.Class expectedType,
                                                  javax.servlet.jsp.PageContext pageContext,
                                                  ProtectedFunctionMapper functionMap)
                                           throws javax.el.ELException

Evaluates an EL expression

Parameters:

expression - The expression to be evaluated

expectedType - The expected resulting type

pageContext - The page context

functionMap - Maps prefix and name to Method

Returns:

The result of the evaluation

Throws:

javax.el.ELException

getValueExpression

public static javax.el.ValueExpression getValueExpression(java.lang.String expression,
                                                          javax.servlet.jsp.PageContext pageContext,
                                                          java.lang.Class expectedType,
                                                          javax.el.FunctionMapper functionMap)

getMethodExpression

public static javax.el.MethodExpression getMethodExpression(java.lang.String expression,
                                                            javax.servlet.jsp.PageContext pageContext,
                                                            javax.el.FunctionMapper functionMap,
                                                            java.lang.Class expectedType,
                                                            java.lang.Class[] paramTypes)

setValueVariable

public static void setValueVariable(javax.servlet.jsp.PageContext pageContext,
                                    java.lang.String variable,
                                    javax.el.ValueExpression expression)

setMethodVariable

public static void setMethodVariable(javax.servlet.jsp.PageContext pageContext,
                                     java.lang.String variable,
                                     javax.el.MethodExpression expression)