org.apache.cassandra.db.view

Class ViewManager

java.lang.Object

org.apache.cassandra.db.view.ViewManager

public class ViewManager
extends java.lang.Object

Manages View's for a single ColumnFamilyStore. All of the views for that table are created when this manager is initialized. The main purposes of the manager are to provide a single location for updates to be vetted to see whether they update any views updatesAffectView(Collection, boolean), provide locks to prevent multiple updates from creating incoherent updates in the view acquireLockFor(ByteBuffer), and to affect change on the view.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
class	ViewManager.ForStore

Constructor Summary

Constructors

Constructor and Description
ViewManager(Keyspace keyspace)

Method Summary

Modifier and Type	Method and Description
static java.util.concurrent.locks.Lock	acquireLockFor(java.nio.ByteBuffer key)
void	addView(ViewDefinition definition)
java.lang.Iterable<View>	allViews()
void	buildAllViews()
ViewManager.ForStore	forTable(java.util.UUID baseId)
void	pushViewReplicaUpdates(PartitionUpdate update, boolean writeCommitLog, java.util.concurrent.atomic.AtomicLong baseComplete) Calculates and pushes updates to the views replicas.
void	reload()
void	removeView(java.lang.String name)
void	update(java.lang.String viewName)
boolean	updatesAffectView(java.util.Collection<? extends IMutation> mutations, boolean coordinatorBatchlog)

Methods inherited from class java.lang.Object

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

Constructor Detail

ViewManager

public ViewManager(Keyspace keyspace)

Method Detail

pushViewReplicaUpdates

public void pushViewReplicaUpdates(PartitionUpdate update,
                                   boolean writeCommitLog,
                                   java.util.concurrent.atomic.AtomicLong baseComplete)

Calculates and pushes updates to the views replicas. The replicas are determined by ViewUtils.getViewNaturalEndpoint(String, Token, Token).

updatesAffectView

public boolean updatesAffectView(java.util.Collection<? extends IMutation> mutations,
                                 boolean coordinatorBatchlog)

allViews

public java.lang.Iterable<View> allViews()

update

public void update(java.lang.String viewName)

reload

public void reload()

addView

public void addView(ViewDefinition definition)

removeView

public void removeView(java.lang.String name)

buildAllViews

public void buildAllViews()

forTable

public ViewManager.ForStore forTable(java.util.UUID baseId)

acquireLockFor

public static java.util.concurrent.locks.Lock acquireLockFor(java.nio.ByteBuffer key)