CacheableJspPage (IBM WebSphere Application Server, Release 8.5)

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IBM WebSphere Application Server^TM
Release 8.5

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java.lang.Object
- javax.servlet.GenericServlet
- - javax.servlet.http.HttpServlet
  - - com.ibm.ws.webcontainer.jsp.runtime.HttpJspBase
    - - com.ibm.websphere.servlet.cache.CacheableJspPage

All Implemented Interfaces:

CacheableServlet, java.io.Serializable, javax.servlet.jsp.HttpJspPage, javax.servlet.jsp.JspPage, javax.servlet.Servlet, javax.servlet.ServletConfig
```
public abstract class CacheableJspPage
extends com.ibm.ws.webcontainer.jsp.runtime.HttpJspBase
implements CacheableServlet
```
This class identifies cacheable JSPs to the fragment cache. The cache will call the getId() and getSharingPolicy() methods to obtain the caching metadata for a given execution of the JSP.

See Also:
Serialized Form

Field Summary
- Fields inherited from class com.ibm.ws.webcontainer.jsp.runtime.HttpJspBase
  pageContext

Constructor Summary

Constructors
Constructor and Description

CacheableJspPage()

Method Summary

Methods
Modifier and Type	Method and Description
`java.lang.String`	`getId(javax.servlet.http.HttpServletRequest request)` This executes the algorithm to compute the cache id.
`int`	`getSharingPolicy(javax.servlet.http.HttpServletRequest request)` This returns the sharing policy for this cache entry.

Methods inherited from class com.ibm.ws.webcontainer.jsp.runtime.HttpJspBase
_jspService, destroy, getServletInfo, getTagHandler, init, jspDestroy, jspInit, putTagHandler, service

Methods inherited from class javax.servlet.http.HttpServlet
doDelete, doGet, doHead, doOptions, doPost, doPut, doTrace, getLastModified, service

Methods inherited from class javax.servlet.GenericServlet
getInitParameter, getInitParameterNames, getServletConfig, getServletContext, getServletName, init, log, log

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

Methods inherited from interface javax.servlet.Servlet
getServletConfig, service

- Constructor Detail
  - CacheableJspPage
```
public CacheableJspPage()
```
- Method Detail
  - getId
```
public java.lang.String getId(javax.servlet.http.HttpServletRequest request)
```
    This executes the algorithm to compute the cache id.
    
    Specified by:
    
    getId in interface CacheableServlet
    
    Overrides:
    
    getId in class com.ibm.ws.webcontainer.jsp.runtime.HttpJspBase
    
    Parameters:
    request - The HTTP request object.
    
    Returns:
    The cache id. A null indicates that the JSP should not be cached.
  - getSharingPolicy
```
public int getSharingPolicy(javax.servlet.http.HttpServletRequest request)
```
    This returns the sharing policy for this cache entry. See com.ibm.websphere.servlet.cache.EntryInfo for possible values.
    
    Specified by:
    
    getSharingPolicy in interface CacheableServlet
    
    Overrides:
    
    getSharingPolicy in class com.ibm.ws.webcontainer.jsp.runtime.HttpJspBase
    
    Parameters:
    request - The HTTP request object.
    
    Returns:
    The sharing policy.