Package com.lightstreamer.adapters.remote

Class TableInfo

java.lang.Object

com.lightstreamer.adapters.remote.TableInfo

public class TableInfo
extends Object

Used by MetadataProvider to provide value objects to the calls to methods NotifyNewTables, NotifyTablesClose, and notifyMpnSubscriptionActivation. The attributes of every Table (i.e.: Subscription) to be added or removed to a Session have to be written to a TableInfo instance.

Constructor Summary

Constructors

Constructor	Description
TableInfo(int winIndex, Mode mode, String group, String dataAdapter, String schema, int min, int max, String selector, String[] itemNames, SubscriptionStatistics[] statistics)	Used by Lightstreamer to create a TableInfo instance, collecting the various attributes of a Table (i.e.: Subscription).

Method Summary

Modifier and Type	Method	Description
String	getDataAdapter()	Returns the name of the Data Adapter to which the Table (i.e.: Subscription) refers.
final String	getId()	Gets the name of the Item Group (or specification of the Item List) to which the subscribed Items belong.
final int	getMax()	Gets the index of the last Item in the Group to be considered in the Table (i.e.: Subscription).
final int	getMin()	Gets the index of the first Item in the Group to be considered in the Table (i.e.: Subscription).
final Mode	getMode()	Gets the publishing Mode for the Items in the Table (i.e.: Subscription) (it must be the same across all the Table).
final String	getSchema()	Gets the name of the Field Schema (or specification of the Field List) used for the subscribed Items.
final String	getSelector()	Gets the name of the optional Selector associated to the Table (i.e.: Subscription).
String[]	getSubscribedItems()	Returns the array of the Item names involved in this Table (i.e.: Subscription).
SubscriptionStatistics[]	getSubscriptionStatistics()	Returns an array that contains the statistics related with the activity of all items involved in this Table (i.e.: Subscription).
final int	getWinIndex()	Gets the unique identifier of the client subscription request within the session.

Methods inherited from class java.lang.Object

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

Constructor Details

TableInfo

public TableInfo(int winIndex,
 @Nonnull
 Mode mode,
 @Nonnull
 String group,
 @Nonnull
 String dataAdapter,
 @Nonnull
 String schema,
 int min,
 int max,
 @Nullable
 String selector,
 @Nonnull
 String[] itemNames,
 @Nullable
 SubscriptionStatistics[] statistics)

Used by Lightstreamer to create a TableInfo instance, collecting the various attributes of a Table (i.e.: Subscription).

Parameters:

winIndex - Unique identifier of the client subscription request within the session.

mode - Publishing Mode for the Items in the Table (i.e.: Subscription) (it must be the same across all the Table).

group - The name of the Item Group (or specification of the Item List) to which the subscribed Items belong.

dataAdapter - The name of the Data Adapter to which the Table (i.e.: Subscription) refers.

schema - The name of the Field Schema (or specification of the Field List) used for the subscribed Items.

min - The 1-based index of the first Item in the Group to be considered in the Table (i.e.: Subscription).

max - The 1-based index of the last Item in the Group to be considered in the Table (i.e.: Subscription).

selector - The name of the optional Selector associated to the table (i.e.: Subscription).

itemNames - The array of Item names involved in this Table (i.e.: Subscription).

statistics - The array of subscription statistics associated to the subscribed Items. It can be null if the statistics are not available; otherwise it should have the same size as the itemNames array.

Method Details

getWinIndex

public final int getWinIndex()

Gets the unique identifier of the client subscription request within the session. This allows for matching the corresponding subscription and unsubscription requests. Note that, for clients based on a very old version of a client library or text protocol, subscription requests may involve multiple Tables (i.e.: Subscriptions), hence multiple objects of this type can be supplied in a single array by MetadataProvider through NotifyNewTables and NotifyTablesClose. In this case, the value returned is the same for all these objects and the single Tables (i.e.: Subscriptions) can be identified by their relative position in the array.

Returns:

the unique identifier of the client subscription request.

getMode

@Nonnull
public final Mode getMode()

Gets the publishing Mode for the Items in the Table (i.e.: Subscription) (it must be the same across all the Table).

Returns:

the publishing Mode for the Items in the Table

getId

@Nonnull
public final String getId()

Gets the name of the Item Group (or specification of the Item List) to which the subscribed Items belong.

Returns:

the name of the Item Group (or specification of the Item List)

getDataAdapter

@Nonnull
public String getDataAdapter()

Returns the name of the Data Adapter to which the Table (i.e.: Subscription) refers.

Returns:

the name of the involved Data Adapter.

getSchema

@Nonnull
public final String getSchema()

Gets the name of the Field Schema (or specification of the Field List) used for the subscribed Items.

Returns:

the name of the Field Schema (or specification of the Field List)

getMin

public final int getMin()

Gets the index of the first Item in the Group to be considered in the Table (i.e.: Subscription).

Returns:

the index of the first Item in the Group

getMax

public final int getMax()

Gets the index of the last Item in the Group to be considered in the Table (i.e.: Subscription).

Returns:

the index of the last Item in the Group

getSelector

@Nullable
public final String getSelector()

Gets the name of the optional Selector associated to the Table (i.e.: Subscription).

Returns:

the name of the optional Selector associated to the Table

getSubscribedItems

@Nonnull
public String[] getSubscribedItems()

Returns the array of the Item names involved in this Table (i.e.: Subscription). The sequence of names is the same one returned by MetadataProvider.getItems(String, String, String) when decoding of the group name, but restricted, in case a first and/or last Item was specified in the client request (see getMin() and getMax()).

Returns:

an Array of Item names.

getSubscriptionStatistics

@Nullable
public SubscriptionStatistics[] getSubscriptionStatistics()

Returns an array that contains the statistics related with the activity of all items involved in this Table (i.e.: Subscription). Each entry refers to one item and the order is the same as returned by getSubscribedItems().
These statistics are available only on the objects supplied by calls to MetadataProvider.notifyTablesClose(java.lang.String, com.lightstreamer.adapters.remote.TableInfo[]), so that the statistics will refer to the whole life of the subscription. Moreover, the statistics are available only if previously enabled through MetadataProvider.wantsFinalTableStatistics(String, TableInfo[]).

Returns:

an Array of statistics-gathering objects or null.