QueueTrigger (Microsoft Azure Functions Java Core Types 3.2.2 API)

```
@Retention(RUNTIME)
@Target(PARAMETER)
public @interface QueueTrigger
```
Place this on a parameter whose value would come from a storage queue, and causing the method to run when a new item is pushed. The parameter type can be one of the following:
- Any native Java types such as int, String, byte[]
- Nullable values using Optional<T>
- Any POJO type
The following example shows a Java function that polls the "myqueue-items" queue and writes a log each time a queue item is processed.
```
@FunctionName("queueMonitor")
 public void logQueueItem(
    @QueueTrigger(name = "msg", queueName = "myqueue-items", connection = "AzureWebJobsStorage") 
     String message,
     final ExecutionContext context
 ) {
     context.getLogger().info("Queue message processed: " + message);
 }
```
Since:

1.0.0

Required Element Summary

Required Elements
Modifier and Type	Required Element	Description
`java.lang.String`	`name`	The variable name used in function.json.
`java.lang.String`	`queueName`	Defines the name of the storage queue to which to bind.

Optional Element Summary

Optional Elements
Modifier and Type	Optional Element	Description
`java.lang.String`	`connection`	Defines the app setting name that contains the Azure Storage connection string.
`java.lang.String`	`dataType`	Defines how Functions runtime should treat the parameter value.

- Element Detail
  - name
```
java.lang.String name
```
    The variable name used in function.json.
    
    Returns:
    
    The variable name used in function.json.
- - queueName
```
java.lang.String queueName
```
    Defines the name of the storage queue to which to bind.
    
    Returns:
    
    The storage queue name string.
- - dataType
```
java.lang.String dataType
```
    Defines how Functions runtime should treat the parameter value. Possible values are:
    
    "": get the value as a string, and try to deserialize to actual parameter type like POJO
    
    string: always get the value as a string
    
    binary: get the value as a binary data, and try to deserialize to actual parameter type byte[]
    Returns:
    
    The dataType which will be used by the Functions runtime.
    
    Default:
    
    ""
- - connection
```
java.lang.String connection
```
    Defines the app setting name that contains the Azure Storage connection string.
    
    Returns:
    
    The app setting name of the connection string.
    
    Default:
    
    ""