Direct Known Subclasses:

PageContext

public abstract class JspContext
extends java.lang.Object

Since:

2.0

• Constructor Summary

  Constructors

  Constructor and Description
  JspContext ()

• Method Summary

  Methods

  Modifier and Type	Method and Description
  abstract java.lang.Object	findAttribute (java.lang.String name) Returns the specified attribute value from any scope, or null if not found.
  abstract java.lang.Object	getAttribute (java.lang.String name) Returns the specified attribute value in page scope.
  abstract java.lang.Object	getAttribute (java.lang.String name, int scope) Returns the specified attribute value in the specified scope.
  abstract java.util.Enumeration	getAttributeNamesInScope (int scope) Returns all the attribute names in the given scope.
  abstract int	getAttributesScope (java.lang.String name) Returns the scope of the given attribute.
  abstract ELContext	getELContext () Returns the EL context associated with this context.
  abstract ExpressionEvaluator	getExpressionEvaluator () Deprecated. use JspApplicationContext.getExpressionFactory()
  abstract JspWriter	getOut () Returns the out page object.
  abstract VariableResolver	getVariableResolver () Deprecated. use ELContext.getELResolver()
  abstract JspWriter	popBody () Returns the previous JspWriter saved by the last matching call to pushBody(java.io.Writer).
  abstract JspWriter	pushBody (java.io.Writer writer) Returns a new JspWriter that wraps the specified writer.
  abstract void	removeAttribute (java.lang.String name) Removes the specified attribute from all scopes.
  abstract void	removeAttribute (java.lang.String name, int scope) Removes the specified attribute from the specified scope.
  abstract void	setAttribute (java.lang.String name, java.lang.Object value) Set the specified attribute in page scope.
  abstract void	setAttribute (java.lang.String name, java.lang.Object attribute, int scope) Set the specified attribute with the specified 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

  • setAttribute

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

    Set the specified attribute in page scope.

    Parameters:

    name - the attribute name

    attribute - value of the attribute

    Throws:

    java.lang.NullPointerException - if name is null

  • setAttribute

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

    Set the specified attribute with the specified scope.

    Parameters:

    name - the attribute name

    attribute - value of the attribute

    scope - scope of the attribute

    Throws:

    java.lang.NullPointerException - if name is null

    java.lang.IllegalArgumentException - if scope is not a valid scope

    See Also:

    PageContext.APPLICATION_SCOPE, PageContext.PAGE_SCOPE, PageContext.REQUEST_SCOPE, PageContext.SESSION_SCOPE

  • getAttribute

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

    Returns the specified attribute value in page scope.

    Parameters:

    name - the attribute name

    Returns:

    the object associated with this name

    Throws:

    java.lang.NullPointerException - if name is null

  • getAttribute

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

    Returns the specified attribute value in the specified scope.

    Parameters:

    name - the attribute name

    scope - scope of the attribute

    Returns:

    the object associated with this name.

    Throws:

    java.lang.NullPointerException - if name is null

    java.lang.IllegalArgumentException - if scope is not a valid scope

    See Also:

    PageContext.APPLICATION_SCOPE, PageContext.PAGE_SCOPE, PageContext.REQUEST_SCOPE, PageContext.SESSION_SCOPE

  • findAttribute

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

    Returns the specified attribute value from any scope, or null if not found. Scopes are searched in the following order: page, request, session, application.

    Parameters:

    name - the attribute name

    Throws:

    java.lang.NullPointerException - if name is null

  • removeAttribute

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

    Removes the specified attribute from all scopes.

    Parameters:

    name - the attribute name

    Throws:

    java.lang.NullPointerException - if name is null

  • removeAttribute

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

    Removes the specified attribute from the specified scope.

    Parameters:

    name - the attribute name

    scope - the scope

    Throws:

    java.lang.NullPointerException - if name is null

    java.lang.IllegalArgumentException - if scope is not a valid scope

    See Also:

    PageContext.APPLICATION_SCOPE, PageContext.PAGE_SCOPE, PageContext.REQUEST_SCOPE, PageContext.SESSION_SCOPE

  • getAttributesScope

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

    Returns the scope of the given attribute.

    Parameters:

    name - the attribute name

    Returns:

    the scope where the attribute is defined, or 0 if not found

    Throws:

    java.lang.NullPointerException - if name is null

  • getAttributeNamesInScope

    public abstract java.util.Enumeration getAttributeNamesInScope(int scope)

    Returns all the attribute names in the given scope.

    Parameters:

    scope - the scope

    Throws:

    java.lang.IllegalArgumentException - if scope is not a valid scope

  • getOut

    public abstract JspWriter getOut()

    Returns the out page object.

  • getExpressionEvaluator

    public abstract ExpressionEvaluator getExpressionEvaluator()

    Deprecated. use JspApplicationContext.getExpressionFactory()
    Returns the EL expression evaluator.

    Since:

    2.0

  • getVariableResolver

    public abstract VariableResolver getVariableResolver()

    Deprecated. use ELContext.getELResolver()
    Returns the variable resolver in this context.

    Since:

    2.0

  • getELContext

    public abstract ELContext getELContext()

    Returns the EL context associated with this context.

    Since:

    2.1

  • pushBody

    public abstract JspWriter pushBody(java.io.Writer writer)

    Returns a new JspWriter that wraps the specified writer. This updates the value of the out page object.

    Since:

    2.0

  • popBody

    public abstract JspWriter popBody()

    Returns the previous JspWriter saved by the last matching call to pushBody(java.io.Writer). This updates the value of the out page object.