MapImpl (uk.gov.gchq.gaffer:gaffer2 2.2.0 API)

java.lang.Object
- uk.gov.gchq.gaffer.mapstore.impl.MapImpl

```
public class MapImpl
extends Object
```
Map data store implementation use by the Gaffer MapStore class.
This class can be thought of as an analogue to a conventional database. Internally, different Map and MultiMap instances are used to keep track of the stored elements and the relationships between those elements. This data store is then abstracted again as a Gaffer Store (by the MapStore class) to give Gaffer-specific functionality.
The internal variables of this class are package-private. This allows operation handlers for the MapStore to be placed in the same package and get access to the maps, without exposing the internal state of the MapStore to classes outside of this package.

- Field Summary
  
  Fields
  Modifier and Type Field Description
  
  static String AGG_ELEMENTS
  
  static String EDGE_ID_TO_ELEMENTS
  
  static String ENTITY_ID_TO_ELEMENTS
  
  static String NON_AGG_ELEMENTS
- Constructor Summary
  
  Constructors
  Constructor Description
  
  MapImpl(Schema schema, MapStoreProperties mapStoreProperties)
- Method Summary
  
  All Methods Instance Methods Concrete Methods
  Modifier and Type Method Description
  
  void clear()
  - Methods inherited from class java.lang.Object
    equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail
- AGG_ELEMENTS
```
public static final String AGG_ELEMENTS
```
  See Also:
  
  Constant Field Values
- NON_AGG_ELEMENTS
```
public static final String NON_AGG_ELEMENTS
```
  See Also:
  
  Constant Field Values
- ENTITY_ID_TO_ELEMENTS
```
public static final String ENTITY_ID_TO_ELEMENTS
```
  See Also:
  
  Constant Field Values
- EDGE_ID_TO_ELEMENTS
```
public static final String EDGE_ID_TO_ELEMENTS
```
  See Also:
  
  Constant Field Values

Constructor Detail

MapImpl

public MapImpl(Schema schema,
               MapStoreProperties mapStoreProperties)

Method Detail
- clear
```
public void clear()
```