javax.servlet.jsp

Class JspContext

java.lang.Object

javax.servlet.jsp.JspContext

Direct Known Subclasses:

PageContext

public abstract class JspContext
extends java.lang.Object

Constructor Summary

Constructors

Constructor and Description
JspContext()

Method Summary

Modifier and Type	Method and Description
abstract java.lang.Object	findAttribute(java.lang.String name) Finds an attribute in all scopes.
abstract java.lang.Object	getAttribute(java.lang.String name) Gets the named page attribute.
abstract java.lang.Object	getAttribute(java.lang.String name, int scope) Gets an attribute in a given scope.
abstract java.util.Enumeration<java.lang.String>	getAttributeNamesInScope(int scope) Lists attribute names in a given scope.
abstract int	getAttributesScope(java.lang.String name) Returns the scope for an attribute.
abstract ELContext	getELContext() Returns the EL context with the JspContext
abstract ExpressionEvaluator	getExpressionEvaluator() Returns an expression evaluator for creating JSP EL expressions.
abstract JspWriter	getOut() Returns the current output for the page.
abstract VariableResolver	getVariableResolver() Returns a variable resolver for evaluating JSP EL expressions.
JspWriter	popBody() Internal routine to support BodyTags.
JspWriter	pushBody(java.io.Writer writer) Internal routine to support BodyTags.
abstract void	removeAttribute(java.lang.String name) Removes the named page attribute.
abstract void	removeAttribute(java.lang.String name, int scope) Removes an attribute in a given scope.
abstract void	setAttribute(java.lang.String name, java.lang.Object attribute) Sets the named page attribute.
abstract void	setAttribute(java.lang.String name, java.lang.Object o, int scope) Sets an attribute in a given scope.

Methods inherited from class java.lang.Object

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

Constructor Detail

JspContext

public JspContext()

Method Detail

getOut

public abstract JspWriter getOut()

Returns the current output for the page.

getAttribute

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

Gets the named page attribute.

Parameters:

name - of the attribute

setAttribute

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

Sets the named page attribute.

Parameters:

name - name of the attribute

attribute - non-null attribute value.

removeAttribute

public abstract void removeAttribute(java.lang.String name)

Removes the named page attribute.

setAttribute

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

Sets an attribute in a given scope. You should use the scope-specific routines instead, like request.setAttribute.

Parameters:

name - attribute name

o - attribute value

scope - attribute scope

getAttribute

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

Gets an attribute in a given scope. You should use the scope-specific routines instead, like request.getAttribute.

Parameters:

name - attribute name

scope - attribute scope

removeAttribute

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

Removes an attribute in a given scope. You should use the scope-specific routines instead, like request.removeAttribute.

getAttributeNamesInScope

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

Lists attribute names in a given scope. You should use the scope-specific routines instead, like request.getAttributeNames

getAttributesScope

public abstract int getAttributesScope(java.lang.String name)

Returns the scope for an attribute.

findAttribute

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

Finds an attribute in all scopes.

pushBody

public JspWriter pushBody(java.io.Writer writer)

Internal routine to support BodyTags.

popBody

public JspWriter popBody()

Internal routine to support BodyTags.

getExpressionEvaluator

public abstract ExpressionEvaluator getExpressionEvaluator()

Returns an expression evaluator for creating JSP EL expressions.

getVariableResolver

public abstract VariableResolver getVariableResolver()

Returns a variable resolver for evaluating JSP EL expressions.

getELContext

public abstract ELContext getELContext()

Returns the EL context with the JspContext