MetaQueryMessageHandler

java.lang.Object
- org.astrogrid.samp.client.AbstractMessageHandler
- - org.astrogrid.samp.hub.MetaQueryMessageHandler

All Implemented Interfaces:

MessageHandler
```
class MetaQueryMessageHandler
extends AbstractMessageHandler
```
Implements MType for querying registered clients by metadata item.

Since:

21 Nov 2011

Author:

Mark Taylor

Field Summary

Fields
Modifier and Type Field Description

private static java.lang.String BASE_MTYPE

private ClientSet clientSet_

Constructor Summary

Constructors
Constructor Description

MetaQueryMessageHandler(ClientSet clientSet)
Constructor.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`java.util.Map`	`processCall(HubConnection conn, java.lang.String senderId, Message msg)`	Implements message processing.

Methods inherited from class org.astrogrid.samp.client.AbstractMessageHandler
createResponse, getSubscriptions, receiveCall, receiveNotification, setSubscriptions

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Field Detail
  - clientSet_
```
private final ClientSet clientSet_
```
  - BASE_MTYPE
```
private static final java.lang.String BASE_MTYPE
```
    See Also:
    
    Constant Field Values
- Constructor Detail
  - MetaQueryMessageHandler
```
public MetaQueryMessageHandler(ClientSet clientSet)
```
    Constructor.
    
    Parameters:
    
    clientSet - hub client set object
- Method Detail
  - processCall
```
public java.util.Map processCall(HubConnection conn,
                                 java.lang.String senderId,
                                 Message msg)
```
    Description copied from class: AbstractMessageHandler
    
    Implements message processing. Implementations should normally return a map which contains the samp.result part of the call response, that is the MType-specific return value name->value map. As a special case, returning null is equivalent to returning an empty map. However, if AbstractMessageHandler.createResponse(java.util.Map) is overridden, the return value semantics may be different.
    
    Specified by:
    
    processCall in class AbstractMessageHandler
    
    Parameters:
    
    conn - hub connection
    
    senderId - public ID of sender client
    
    msg - message with MType this handler is subscribed to
    
    Returns:
    
    result of handling this message; exact semantics determined by createResponse implementation