org.apache.jasper.runtime

Class PageContextImpl

java.lang.Object

PageContext

org.apache.jasper.runtime.PageContextImpl

public class PageContextImpl
extends PageContext

Implementation of the PageContext class from the JSP spec.

Method Summary

Modifier and Type	Method and Description
static java.lang.Object	evaluateExpression(java.lang.String expression, java.lang.Class expectedType, PageContext pageContext, ProtectedFunctionMapper functionMap) Evaluates an EL expression
java.lang.Object	findAttribute(java.lang.String name)
void	forward(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)
ELContext	getELContext()
java.lang.Exception	getException() Returns the exception associated with this page context, if any.
ExpressionEvaluator	getExpressionEvaluator() Provides programmatic access to the ExpressionEvaluator.
static MethodExpression	getMethodExpression(java.lang.String expression, PageContext pageContext, FunctionMapper functionMap, java.lang.Class expectedType, java.lang.Class[] paramTypes)
JspWriter	getOut()
java.lang.Object	getPage()
ServletRequest	getRequest()
ServletResponse	getResponse()
Servlet	getServlet()
ServletConfig	getServletConfig()
ServletContext	getServletContext()
HttpSession	getSession()
static ValueExpression	getValueExpression(java.lang.String expression, PageContext pageContext, java.lang.Class expectedType, FunctionMapper functionMap)
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(Servlet servlet, ServletRequest request, ServletResponse response, java.lang.String errorPageURL, boolean needsSession, int bufferSize, boolean autoFlush)
JspWriter	popBody()
BodyContent	pushBody()
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(PageContext pageContext, java.lang.String variable, MethodExpression expression)
static void	setValueVariable(PageContext pageContext, java.lang.String variable, ValueExpression expression)

Methods inherited from class java.lang.Object

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

Method Detail

initialize

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

Throws:

java.io.IOException

release

public void release()

getAttribute

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

getAttribute

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

setAttribute

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

setAttribute

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

removeAttribute

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

getAttributesScope

public int getAttributesScope(java.lang.String name)

findAttribute

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

getAttributeNamesInScope

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

removeAttribute

public void removeAttribute(java.lang.String name)

getOut

public JspWriter getOut()

getSession

public HttpSession getSession()

getServlet

public Servlet getServlet()

getServletConfig

public ServletConfig getServletConfig()

getServletContext

public ServletContext getServletContext()

getRequest

public ServletRequest getRequest()

getResponse

public ServletResponse getResponse()

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).

Returns:

The Exception associated with this page context, if any.

getPage

public java.lang.Object getPage()

include

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

Throws:

ServletException

java.io.IOException

include

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

Throws:

ServletException

java.io.IOException

getVariableResolver

public VariableResolver getVariableResolver()

getELContext

public ELContext getELContext()

forward

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

Throws:

ServletException

java.io.IOException

pushBody

public BodyContent pushBody()

pushBody

public JspWriter pushBody(java.io.Writer writer)

popBody

public JspWriter popBody()

getExpressionEvaluator

public ExpressionEvaluator getExpressionEvaluator()

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

handlePageException

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

Throws:

java.io.IOException

ServletException

handlePageException

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

Throws:

java.io.IOException

ServletException

evaluateExpression

public static java.lang.Object evaluateExpression(java.lang.String expression,
                                                  java.lang.Class expectedType,
                                                  PageContext pageContext,
                                                  ProtectedFunctionMapper functionMap)
                                           throws 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:

ELException

getValueExpression

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

getMethodExpression

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

setValueVariable

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

setMethodVariable

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