TopicHasAttributes Property

This property returns true if the topic attributes are available.

Syntax

 sns.getTopicHasAttributes(index, [callback])

Default Value

FALSE

Callback

The 'callback' parameter specifies a function which will be called when the operation completes (or an error is encountered). If the 'callback' parameter is not specified, then the method will block and will not return until the operation completes (or an error is encountered).

The callback for the getTopicHasAttributes([callback]) method is defined as:

function(err, data){ }

'err' is the error that occurred. If there was no error, then 'err' is 'null'.

'data' is the value returned by the method.

The callback for the setTopicHasAttributes([callback]) method is defined as:

function(err){ }

'err' is the error that occurred. If there was no error, then 'err' is 'null'.

'err' has 2 properties which hold detailed information:

err.code
err.message

Remarks

This property returns true if the topic attributes are available. A topic's attributes are only returned and parsed after calling GetTopicAttributes. This property serves as an easy way to determine if the topic's attributes are available.

The following properties are applicable after calling GetTopicAttributes:

• TopicDeliveryPolicy
• TopicDisplayName
• TopicEffectiveDeliveryPolicy
• TopicOwner
• TopicAccessPolicy
• TopicSubscriptionsConfirmed
• TopicSubscriptionsDeleted
• TopicSubscriptionsPending
• TopicArn

The following properties are applicable after calling ListTopics:

• TopicArn

The size of the array is controlled by the TopicCount property.

This property is read-only and not available at design time.

Data Type

Boolean