Attribute (appNG Parent 2.0.0-SNAPSHOT API)

java.lang.Object
- javax.servlet.jsp.tagext.TagSupport
- - org.appng.taglib.Attribute

All Implemented Interfaces:

Serializable, javax.servlet.jsp.tagext.IterationTag, javax.servlet.jsp.tagext.JspTag, javax.servlet.jsp.tagext.Tag
```
public class Attribute
extends javax.servlet.jsp.tagext.TagSupport
implements javax.servlet.jsp.tagext.Tag
```
This class defines an attribute tag which can be used in JSPs.
It is used to read attributes from/write attributes to the current Environment using one of the supported Scopes.
For write-mode, only Scope.REQUEST and Scope.SESSION are supported.

In read-mode, you can also "navigate" through objects that are present in the current scope, for example SESSION.currentSubject.realname, where SESSION.currentSubject is the name of the attribute (which is a Subject) and realname is a property of the subject.
Usage:
```
 <appNG:attribute scope="SESSION" mode="read"  name="foo"  />
 <appNG:attribute scope="REQUEST" mode="read"  name="bar" />
 <appNG:attribute scope="SESSION" mode="write" name="someName" value="someValue"/>
 <-- for URL-scope, the name is the zero based index of the path segment (segments are separated by '/') -->
 <-- for example, if the path is '/en/foo/bar/42' then you can access the '42' with index 3-->
 <appNG:attribute scope="URL" mode="read" name="3" />
 
```
Author:

Matthias Herlitzius, Matthias Müller

See Also:

Serialized Form

Nested Class Summary

Nested Classes
Modifier and Type Class Description

static class Attribute.Mode
the mode for an Attribute

Field Summary
- Fields inherited from class javax.servlet.jsp.tagext.TagSupport
  id, pageContext
- Fields inherited from interface javax.servlet.jsp.tagext.IterationTag
  EVAL_BODY_AGAIN
- Fields inherited from interface javax.servlet.jsp.tagext.Tag
  EVAL_BODY_INCLUDE, EVAL_PAGE, SKIP_BODY, SKIP_PAGE

Constructor Summary

Constructors
Constructor Description

Attribute()

Attribute(String scope, String name)

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`int`	`doEndTag()`
`int`	`doStartTag()`
`String`	`getMode()`
`String`	`getName()`
`String`	`getScope()`
`String`	`getValue()`
`void`	`release()`
`void`	`setMode(String mode)`
`void`	`setName(String name)`
`void`	`setScope(String scope)`
`void`	`setValue(String value)`

Methods inherited from class javax.servlet.jsp.tagext.TagSupport
doAfterBody, findAncestorWithClass, getId, getParent, getValue, getValues, removeValue, setId, setPageContext, setParent, setValue

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface javax.servlet.jsp.tagext.Tag
getParent, setPageContext, setParent

- Constructor Detail
  - Attribute
```
public Attribute(String scope,
                 String name)
```
  - Attribute
```
public Attribute()
```
- Method Detail
  - doEndTag
```
public int doEndTag()
             throws javax.servlet.jsp.JspException
```
    Specified by:
    
    doEndTag in interface javax.servlet.jsp.tagext.Tag
    
    Overrides:
    
    doEndTag in class javax.servlet.jsp.tagext.TagSupport
    
    Throws:
    
    javax.servlet.jsp.JspException
  - doStartTag
```
public int doStartTag()
```
    Specified by:
    
    doStartTag in interface javax.servlet.jsp.tagext.Tag
    
    Overrides:
    
    doStartTag in class javax.servlet.jsp.tagext.TagSupport
  - release
```
public void release()
```
    Specified by:
    
    release in interface javax.servlet.jsp.tagext.Tag
    
    Overrides:
    
    release in class javax.servlet.jsp.tagext.TagSupport
  - getName
```
public String getName()
```
  - setName
```
public void setName(String name)
```
  - getValue
```
public String getValue()
```
  - setValue
```
public void setValue(String value)
```
  - getMode
```
public String getMode()
```
  - setMode
```
public void setMode(String mode)
```
  - getScope
```
public String getScope()
```
  - setScope
```
public void setScope(String scope)
```