Package org.wicketstuff.datastores.cassandra

Class CassandraDataStore

java.lang.Object

org.apache.wicket.pageStore.AbstractPersistentPageStore

org.wicketstuff.datastores.cassandra.CassandraDataStore

All Implemented Interfaces:

IPageStore, IPersistentPageStore

public class CassandraDataStore
extends AbstractPersistentPageStore
implements IPersistentPageStore

A store that saves serialiazed pages in Apache Cassandra.

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.wicket.pageStore.AbstractPersistentPageStore

AbstractPersistentPageStore.PersistedPage

Constructor Summary

Constructors

Constructor	Description
CassandraDataStore(String applicationName, com.datastax.driver.core.Cluster cluster, ICassandraSettings settings)	Constructor.
CassandraDataStore(String applicationName, ICassandraSettings settings)	Constructor.

Method Summary

Modifier and Type	Method	Description
protected void	addPersistedPage(String identifier, IManageablePage page)
protected com.datastax.driver.core.KeyspaceMetadata	createKeyspaceIfNecessary(String keyspaceName, com.datastax.driver.core.Metadata metadata)	Creates the Cassandra keyspace where the data will be stored if it doesn't exists already
protected void	createTableIfNecessary(String keyspaceName, com.datastax.driver.core.KeyspaceMetadata keyspaceMetadata)	Creates the table where the data will be stored if it doesn't exists already
void	destroy()
protected IManageablePage	getPersistedPage(String sessionIdentifier, int pageId)
List<IPersistedPage>	getPersistedPages(String contextIdentifier)
Set<String>	getSessionIdentifiers()
Bytes	getTotalSize()
protected void	removeAllPersistedPages(String identifier)
protected void	removePersistedPage(String identifier, IManageablePage page)
boolean	supportsVersioning()	Pages are always serialized, so versioning is supported.

Methods inherited from class org.apache.wicket.pageStore.AbstractPersistentPageStore

addPage, canBeAsynchronous, createSessionIdentifier, getPage, getSessionIdentifier, removeAllPages, removePage

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.wicket.pageStore.IPageStore

addPage, canBeAsynchronous, detach, end, getPage, removeAllPages, removePage, revertPage

Methods inherited from interface org.apache.wicket.pageStore.IPersistentPageStore

getSessionIdentifier

Constructor Detail

CassandraDataStore

public CassandraDataStore(String applicationName,
                          ICassandraSettings settings)

Constructor. Creates a Cluster based on the contact points provided by the passed settings

Parameters:

settings - The various settings

CassandraDataStore

public CassandraDataStore(String applicationName,
                          com.datastax.driver.core.Cluster cluster,
                          ICassandraSettings settings)

Constructor. Initializes the connection to the Cassandra cluster and creates the keyspace and/or table if necessary.

Parameters:

cluster - The Cassandra cluster

settings - The various settings

Method Detail

getPersistedPage

protected IManageablePage getPersistedPage(String sessionIdentifier,
                                           int pageId)

Specified by:

getPersistedPage in class AbstractPersistentPageStore

removePersistedPage

protected void removePersistedPage(String identifier,
                                   IManageablePage page)

Specified by:

removePersistedPage in class AbstractPersistentPageStore

removeAllPersistedPages

protected void removeAllPersistedPages(String identifier)

Specified by:

removeAllPersistedPages in class AbstractPersistentPageStore

addPersistedPage

protected void addPersistedPage(String identifier,
                                IManageablePage page)

Specified by:

addPersistedPage in class AbstractPersistentPageStore

destroy

public void destroy()

Specified by:

destroy in interface IPageStore

Overrides:

destroy in class AbstractPersistentPageStore

supportsVersioning

public boolean supportsVersioning()

Pages are always serialized, so versioning is supported.

Specified by:

supportsVersioning in interface IPageStore

createTableIfNecessary

protected void createTableIfNecessary(String keyspaceName,
                                      com.datastax.driver.core.KeyspaceMetadata keyspaceMetadata)

Creates the table where the data will be stored if it doesn't exists already

Parameters:

keyspaceName - The name of the keyspace where to create the table

keyspaceMetadata - The keyspace metadata. May be null if this is the first usage of this store with these settings

createKeyspaceIfNecessary

protected com.datastax.driver.core.KeyspaceMetadata createKeyspaceIfNecessary(String keyspaceName,
                                                                              com.datastax.driver.core.Metadata metadata)

Creates the Cassandra keyspace where the data will be stored if it doesn't exists already

Parameters:

keyspaceName - The name of the keyspace

metadata - The cluster metadata

Returns:

The keyspace metadata. May be null if the the metadata doesn't exists yet.

getSessionIdentifiers

public Set<String> getSessionIdentifiers()

Specified by:

getSessionIdentifiers in interface IPersistentPageStore

getTotalSize

public Bytes getTotalSize()

Specified by:

getTotalSize in interface IPersistentPageStore

getPersistedPages

public List<IPersistedPage> getPersistedPages(String contextIdentifier)

Specified by:

getPersistedPages in interface IPersistentPageStore