hct

Class DatabaseLoader

java.lang.Object

hct.DatabaseLoader

All Implemented Interfaces:

com.gemstone.gemfire.cache.CacheCallback, com.gemstone.gemfire.cache.CacheLoader, com.gemstone.gemfire.cache.Declarable

public class DatabaseLoader
extends Object
implements com.gemstone.gemfire.cache.CacheLoader, com.gemstone.gemfire.cache.Declarable

A CacheLoader that simulates a database. The load(com.gemstone.gemfire.cache.LoaderHelper) method recognizes special keys that will "disable" (and subsequently "enable") the database. The database will not service requests while it is diabled. (Or rather, it will take longer than the timeout interval to service the request.)

Since:

2.0.2

Constructor Summary

Constructors

Constructor and Description
DatabaseLoader()

Method Summary

Modifier and Type	Method and Description
void	close()
static String	createNodeFromData(hct.DatabaseLoader.NodeData nd) Returns an XML encoding of a NodeData
void	init(Properties p)
Object	load(com.gemstone.gemfire.cache.LoaderHelper helper) Loads an object from the "database".

Methods inherited from class java.lang.Object

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

Constructor Detail

DatabaseLoader

public DatabaseLoader()

Method Detail

init

public void init(Properties p)

Specified by:

init in interface com.gemstone.gemfire.cache.Declarable

close

public void close()

Specified by:

close in interface com.gemstone.gemfire.cache.CacheCallback

load

public Object load(com.gemstone.gemfire.cache.LoaderHelper helper)
            throws com.gemstone.gemfire.cache.CacheLoaderException

Loads an object from the "database". Simulates the overhead of a database call by waiting a given number of milliseconds.

Specified by:

load in interface com.gemstone.gemfire.cache.CacheLoader

Throws:

com.gemstone.gemfire.cache.CacheLoaderException

See Also:

DatabaseLoader

createNodeFromData

public static String createNodeFromData(hct.DatabaseLoader.NodeData nd)

Returns an XML encoding of a NodeData