Module com.aoapps.servlet.util

Package com.aoapps.servlet.attribute

package com.aoapps.servlet.attribute

Utilities for working with various attribute scopes.

This API has four concepts:

1. ScopeEE - The most broad concept is scope, including page, request, session, and application. Does not yet have a resolved context or attribute name.
2. ContextEE - A specifically resolved context, such as JspContext, ServletRequest, HttpSession, and ServletContext. Does not yet have an attribute name.
3. AttributeEE - An attribute has both context and name and is used for value access.
4. AttributeEE.Name - A name without any specific scope or context.

Ultimately, the goal is to get to an attribute, which means having both a fully resolved context and a name. The API supports arriving at an attribute in any order, such as scope → context → name or name → context.

There is also a set of static utility methods, to which the rest of the API ends up calling. For one-off attribute access, these static methods may be more succinct.

Author:

AO Industries, Inc.

Related Packages

Package	Description
com.aoapps.servlet
com.aoapps.servlet.el
com.aoapps.servlet.function
com.aoapps.servlet.http
com.aoapps.servlet.i18n
com.aoapps.servlet.jsp

Classes

Class	Description
AttributeEE<C,T>	An attribute has scope, context, and name and is used for value access.
AttributeEE.Application<T>	An application-scope attribute.
AttributeEE.Jstl<T>	A JSTL attribute name without any specific scope or context.
AttributeEE.Name<T>	A name without any specific scope or context.
AttributeEE.Name.ContextEEFactory<C,T>	Supports attributes in contexts of types ServletContext, ServletRequest, HttpSession, and JspContext.
AttributeEE.Name.ScopeEEFactory<C,T>	Supports scope attributes in scopes of contexts types ServletContext, ServletRequest, HttpSession, and JspContext.
AttributeEE.Page<T>	A page-scope attribute.
AttributeEE.Request<T>	A request-scope attribute.
AttributeEE.Session<T>	A session-scope attribute.
ContextEE<C>	A specifically resolved context, such as JspContext, ServletRequest, HttpSession, and ServletContext.
ContextEE.Application	AttributeEE: Has application scope and context, still needs name.
ContextEE.Page	AttributeEE: Has page scope and context, still needs name.
ContextEE.Request	AttributeEE: Has request scope and context, still needs name.
ContextEE.Session	AttributeEE: Has session scope and context, still needs name.
ScopeEE<C>	The most broad concept is scope, including page, request, session, and application.
ScopeEE.Application	AttributeEE: Has application scope, still needs context and name.
ScopeEE.Application.Attribute<T>	AttributeEE: Has application scope and name, still needs context.
ScopeEE.Attribute<C,T>	AttributeEE: Has scope and name, still needs context.
ScopeEE.Page	AttributeEE: Has page scope, still needs context and name.
ScopeEE.Page.Attribute<T>	AttributeEE: Has page scope and name, still needs context.
ScopeEE.Request	AttributeEE: Has request scope, still needs context and name.
ScopeEE.Request.Attribute<T>	AttributeEE: Has request scope and name, still needs context.
ScopeEE.Session	AttributeEE: Has session scope, still needs context and name.
ScopeEE.Session.Attribute<T>	AttributeEE: Has session scope and name, still needs context.