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## org.apache.struts2.jasper.runtime
Class PageContextImpl

    java.lang.Object
      javax.servlet.jsp.JspContext
          javax.servlet.jsp.PageContext
              org.apache.struts2.jasper.runtime.PageContextImpl

    public class PageContextImpl

extends javax.servlet.jsp.PageContext

Implementation of the PageContext class from the JSP spec. Also doubles as a VariableResolver for the EL.

Author:
  Anil K. Vijendran, Larry Cable, Hans Bergsten, Pierre Delisle, Mark Roth, Jan Luehe, Jacob Hookom

Field Summary

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`

Method Summary
`Object` | `findAttribute(String name)`
`void` | `forward(String relativeUrlPath)`
`Object` | `getAttribute(String name)`
`Object` | `getAttribute(String name, int scope)`
`Enumeration<String>` | `getAttributeNamesInScope(int scope)`
`int` | `getAttributesScope(String name)`
`javax.el.ELContext` | `getELContext()`
`Exception` | `getException()` Returns the exception associated with this page context, if any.
`javax.servlet.jsp.el.ExpressionEvaluator` | `getExpressionEvaluator()` Provides programmatic access to the ExpressionEvaluator.
`javax.servlet.jsp.JspWriter` | `getOut()`
`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()`
`javax.servlet.jsp.el.VariableResolver` | `getVariableResolver()`
`void` | `handlePageException(Exception ex)`
`void` | `handlePageException(Throwable t)`
`void` | `include(String relativeUrlPath)`
`void` | `include(String relativeUrlPath, boolean flush)`
`void` | `initialize(javax.servlet.Servlet servlet, javax.servlet.ServletRequest request, javax.servlet.ServletResponse response, String errorPageURL, boolean needsSession, int bufferSize, boolean autoFlush)`
`javax.servlet.jsp.JspWriter` | `popBody()`
`static Object` | `proprietaryEvaluate(String expression, Class expectedType, javax.servlet.jsp.PageContext pageContext, ProtectedFunctionMapper functionMap, boolean escape)` Proprietary method to evaluate EL expressions.
`javax.servlet.jsp.tagext.BodyContent` | `pushBody()`
`javax.servlet.jsp.JspWriter` | `pushBody(Writer writer)`
`void` | `release()`
`void` | `removeAttribute(String name)`
`void` | `removeAttribute(String name, int scope)`
`void` | `setAttribute(String name, Object attribute)`
`void` | `setAttribute(String name, Object o, int scope)`

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`

Method Detail

### initialize

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

  Specified by:
    `initialize` in class `javax.servlet.jsp.PageContext`
  Throws:
    `IOException`

### release

    public void release()

  Specified by:
    `release` in class `javax.servlet.jsp.PageContext`

### getAttribute

    public Object getAttribute(String name)

  Specified by:
    `getAttribute` in class `javax.servlet.jsp.JspContext`

### getAttribute

    public Object getAttribute(String name,
                               int scope)

  Specified by:
    `getAttribute` in class `javax.servlet.jsp.JspContext`

### setAttribute

    public void setAttribute(String name,
                             Object attribute)

  Specified by:
    `setAttribute` in class `javax.servlet.jsp.JspContext`

### setAttribute

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

  Specified by:
    `setAttribute` in class `javax.servlet.jsp.JspContext`

### removeAttribute

    public void removeAttribute(String name,
                                int scope)

  Specified by:
    `removeAttribute` in class `javax.servlet.jsp.JspContext`

### getAttributesScope

    public int getAttributesScope(String name)

  Specified by:
    `getAttributesScope` in class `javax.servlet.jsp.JspContext`

### findAttribute

    public Object findAttribute(String name)

  Specified by:
    `findAttribute` in class `javax.servlet.jsp.JspContext`

### getAttributeNamesInScope

    public Enumeration<String> getAttributeNamesInScope(int scope)

  Specified by:
    `getAttributeNamesInScope` in class `javax.servlet.jsp.JspContext`

### removeAttribute

    public void removeAttribute(String name)

  Specified by:
    `removeAttribute` in class `javax.servlet.jsp.JspContext`

### 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 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 Object getPage()

  Specified by:
    `getPage` in class `javax.servlet.jsp.PageContext`

### include

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

  Specified by:
    `include` in class `javax.servlet.jsp.PageContext`
  Throws:
    `javax.servlet.ServletException`
    `IOException`

### include

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

  Specified by:
    `include` in class `javax.servlet.jsp.PageContext`
  Throws:
    `javax.servlet.ServletException`
    `IOException`

### getVariableResolver

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

  Specified by:
    `getVariableResolver` in class `javax.servlet.jsp.JspContext`

### forward

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

  Specified by:
    `forward` in class `javax.servlet.jsp.PageContext`
  Throws:
    `javax.servlet.ServletException`
    `IOException`

### pushBody

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

  Overrides:
    `pushBody` in class `javax.servlet.jsp.PageContext`

### pushBody

    public javax.servlet.jsp.JspWriter pushBody(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(Exception ex)
                             throws IOException,
                                    javax.servlet.ServletException

  Specified by:
    `handlePageException` in class `javax.servlet.jsp.PageContext`
  Throws:
    `IOException`
    `javax.servlet.ServletException`

### handlePageException

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

  Specified by:
    `handlePageException` in class `javax.servlet.jsp.PageContext`
  Throws:
    `IOException`
    `javax.servlet.ServletException`

### proprietaryEvaluate

    public static Object proprietaryEvaluate(String expression,
                                             Class expectedType,
                                             javax.servlet.jsp.PageContext pageContext,
                                             ProtectedFunctionMapper functionMap,
                                             boolean escape)
                                      throws javax.servlet.jsp.el.ELException

  Proprietary method to evaluate EL expressions. XXX - This method should go away once the EL interpreter moves out of JSTL and into its own project. For now, this is necessary because the standard machinery is too slow.

  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.servlet.jsp.el.ELException`

### getELContext

    public javax.el.ELContext getELContext()

  Specified by:
    `getELContext` in class `javax.servlet.jsp.JspContext`

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