HelperDataManager (aloha API)

All Known Implementing Classes:

HelperDataManagerImpl
```
public interface HelperDataManager
```
This interface is the interface of a class, that keeps track of actually loaded helper-data (which might be used by some or all measurements)

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`void`	`addListener(HelperDataManagerListener listener)`	adds a listener
`Data`	`getActiveHelperData()`
`Data`	`getData(HelperDataType type)`	retrieve data of the given type, or null if not available.
`java.util.List<HelperDataType>`	`getDataTypes()`
`void`	`putData(HelperData data)`	add data to the workingset.
`void`	`removeListener(HelperDataManagerListener listener)`	removes a listener
`void`	`setActiveHelperData(HelperDataType dataType)`	sets the data of tyhe given type as active one.

- Method Detail
  - putData
```
void putData(HelperData data)
```
    add data to the workingset.
    
    Parameters:
    
    data -
  - getData
```
Data getData(HelperDataType type)
```
    retrieve data of the given type, or null if not available.
    
    Parameters:
    
    type - the type of the data to retrieve
    
    Returns:
    
    the data
  - getDataTypes
```
java.util.List<HelperDataType> getDataTypes()
```
    Returns:
    
    all the HelperDataTypes for which data is available
  - setActiveHelperData
```
void setActiveHelperData(HelperDataType dataType)
```
    sets the data of tyhe given type as active one.
    
    Parameters:
    
    dataType -
  - getActiveHelperData
```
Data getActiveHelperData()
```
    Returns:
    
    the actually active Helper-Data
  - addListener
```
void addListener(HelperDataManagerListener listener)
```
    adds a listener
    
    Parameters:
    
    listener - the listener to add
  - removeListener
```
void removeListener(HelperDataManagerListener listener)
```
    removes a listener
    
    Parameters:
    
    listener - the listener to remove