com.bloomberglp.blpapi

Class SubscriptionList

java.lang.Object

com.bloomberglp.blpapi.SubscriptionList

All Implemented Interfaces:

Iterable<Subscription>

public final class SubscriptionList
extends Object
implements Iterable<Subscription>

Contains a list of subscriptions.

This component provides a structure to hold the data used (and returned) by the Session.subscribe(com.bloomberglp.blpapi.SubscriptionList), Session.resubscribe(com.bloomberglp.blpapi.SubscriptionList), and Session.unsubscribe(com.bloomberglp.blpapi.SubscriptionList) methods. See "STRUCTURE OF SUBSCRIPTION STRING" section in Subscription for more information on subscription strings.*

QUALIFYING SUBSCRIPTION STRINGS

The subscription strings passed to Subscription are automatically qualified if the service identifier is missing (i.e. if the subscription string does not start with "//"). The subscription parameters (i.e. the optional part after instrument identifier) are never modified.

The rules for qualifying the subscription string are:
• If the subscription string begins with "//" then it is assumed to be a a fully qualified subscription string including service identifier, prefix, and instrument. In this case the string will not be modified and session options defaults have no affect on the subscription.
• If the subscription string begins with a '/' and the second character is not '/', then the string is assumed to begin with the topic prefix, but no service identifier. In this case the string is qualified by prepending the SessionOptions.getDefaultSubscriptionService() to the specified string.
• If the subscription string does not begin with a '/' it is assumed to begin with an instrument identifier. In this case the string is qualified by prepending the SessionOptions.getDefaultSubscriptionService() followed by SessionOptions.getDefaultTopicPrefix() to the specified string. If the 'defaultTopicPrefix' is empty or null, then the prefix used is '/'. Otherwise (in the case of a nontrivial prefix) if the separator '/' is not specified at the beginning or the end of the 'defaultTopicPrefix', then it will be added.

Constructor Summary

Constructors

Constructor and Description
SubscriptionList() Constructs an empty SubscriptionList
SubscriptionList(int initialCapacity) Constructs an empty SubscriptionList with the specified initialCapacity

Method Summary

Methods

Modifier and Type	Method and Description
boolean	add(Subscription subscription) Appends the specified subscription to the end of this list
void	clear() Remove all Subscriptions from this SubscriptionList.
Subscription	get(int index) Get the Subscription at the specified index in this SubscriptionList
boolean	isEmpty() Tests if this SubscriptionList has no elements
Iterator<Subscription>	iterator() Return an iterator over the subscriptions contained in this SubscriptionList
Subscription	remove(int index) Remove the Subscription at the specified index in this SubscriptionList
int	size() Returns the number of Subscriptions in this SubscriptionList
Subscription[]	toArray() Returns an array containing all of the Subscriptions in this SubscriptionList in the correct order

Methods inherited from class java.lang.Object

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

Constructor Detail

SubscriptionList

public SubscriptionList()

Constructs an empty SubscriptionList

SubscriptionList

public SubscriptionList(int initialCapacity)

Constructs an empty SubscriptionList with the specified initialCapacity

Method Detail

add

public boolean add(Subscription subscription)

Appends the specified subscription to the end of this list

Parameters:

subscription - the Subscription that is to be added to this list

clear

public void clear()

Remove all Subscriptions from this SubscriptionList.

get

public Subscription get(int index)

Get the Subscription at the specified index in this SubscriptionList

Parameters:

index - the index of the Subscription to return

Returns:

the subscription at the specified index in this SubscriptionList

Throws:

IndexOutOfBoundsException - if index >= size()

isEmpty

public boolean isEmpty()

Tests if this SubscriptionList has no elements

Returns:

true if this SubscriptionList has no elements false otherwise

remove

public Subscription remove(int index)

Remove the Subscription at the specified index in this SubscriptionList

Parameters:

index - the index of the Subscription to remove from this SubscriptionList

Returns:

the Subscription that was removed from this SubscriptionList

Throws:

IndexOutOfBoundsException - if index >= size()

size

public int size()

Returns the number of Subscriptions in this SubscriptionList

toArray

public Subscription[] toArray()

Returns an array containing all of the Subscriptions in this SubscriptionList in the correct order

iterator

public Iterator<Subscription> iterator()

Return an iterator over the subscriptions contained in this SubscriptionList

Specified by:

iterator in interface Iterable<Subscription>