Package com.streambase.liveview.client

Class LiveViewServerCapability

java.lang.Object

com.streambase.liveview.client.LiveViewServerCapability

Direct Known Subclasses:

LiveViewServerCapability.AggregateMarkGeneration, LiveViewServerCapability.AlertRules, LiveViewServerCapability.AlertWithClusterGroup, LiveViewServerCapability.AlertWithGUID, LiveViewServerCapability.AlertWithQueryString, LiveViewServerCapability.AlertWithQuiescence, LiveViewServerCapability.BlockingDeleteQuery, LiveViewServerCapability.ClientVersionAware, LiveViewServerCapability.ClosablePublisher, LiveViewServerCapability.DataOnRemoveMessage, LiveViewServerCapability.ExternalLiveViewHosting, LiveViewServerCapability.FullSchemas, LiveViewServerCapability.PluggableTableProviders, LiveViewServerCapability.PublishSupportsByteOrder, LiveViewServerCapability.PublishV2, LiveViewServerCapability.ReferenceTablesDirectly, LiveViewServerCapability.ReliablePublisher, LiveViewServerCapability.SavedWorkspaces, LiveViewServerCapability.SeparatelyTransmittedExtendedKeys, LiveViewServerCapability.WorkspacesWithGUID

public abstract class LiveViewServerCapability
extends Object

An abstract class for objects that represent a capability of a LiveView server. Capabilities vary from one server release to another.

Each kind of capability is represented by a nested subclass of this main LiveViewServerCapability abstract class. Instead of using a capability "enum", nested class instances let you ask capability-specific "things"; enums don't. For instance, alert rules support and saved workspace support are treated as capabilities which are available in the 1.4 server. In a later release, one or both capabilities may be changed or enhanced. For instance, say server-side saved-workspace functionality is enhanced post-1.4. At that time, the nested "SavedWorkspaces" class can be changed to include methods that get specific details about "sub-capabilities" of the SavedWorkspaces feature. That's preferable to treating every server enhancement as a whole new capability.

When capabilities are first added, yes, all clients want is an "existence" boolean, so initially, empty subclasses are typically what you want.

See Also:

LiveViewConnection.hasCapability(Class), LiveViewConnection.getCapability(Class), NoSuchCapabilityException

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	LiveViewServerCapability.AggregateMarkGeneration	Server supports special punctuation that allows for guaranteed synchronicity between aggregate queries.
static class	LiveViewServerCapability.AlertRules
static class	LiveViewServerCapability.AlertWithClusterGroup
static class	LiveViewServerCapability.AlertWithGUID
static class	LiveViewServerCapability.AlertWithQueryString
static class	LiveViewServerCapability.AlertWithQuiescence
static class	LiveViewServerCapability.BlockingDeleteQuery
static class	LiveViewServerCapability.ClientVersionAware
static class	LiveViewServerCapability.ClosablePublisher
static class	LiveViewServerCapability.DataOnRemoveMessage
static class	LiveViewServerCapability.ExternalLiveViewHosting
static class	LiveViewServerCapability.FullSchemas
static class	LiveViewServerCapability.PluggableTableProviders
static class	LiveViewServerCapability.PublishSupportsByteOrder
static class	LiveViewServerCapability.PublishV2
static class	LiveViewServerCapability.ReferenceTablesDirectly
static class	LiveViewServerCapability.ReliablePublisher
static class	LiveViewServerCapability.SavedWorkspaces
static class	LiveViewServerCapability.SeparatelyTransmittedExtendedKeys
static class	LiveViewServerCapability.WorkspacesWithGUID

Constructor Summary

Constructors

Constructor	Description
LiveViewServerCapability()

Method Summary

Methods inherited from class java.lang.Object

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

Constructor Detail

LiveViewServerCapability

public LiveViewServerCapability()