AbstractDataStore

java.lang.Object
- com.google.api.client.util.store.AbstractDataStore<V>

Type Parameters:

V - serializable type of the mapped value

All Implemented Interfaces:

DataStore<V>
```
public abstract class AbstractDataStore<V extends Serializable>
extends Object
implements DataStore<V>
```
Abstract data store implementation.

Since:

1.16

Constructor Summary

Constructors

Modifier	Constructor and Description
`protected`	`AbstractDataStore(DataStoreFactory dataStoreFactory, String id)`

Method Summary

All Methods

Instance Methods

Concrete Methods
Modifier and Type	Method and Description
`boolean`	`containsKey(String key)` Returns whether the store contains the given key.
`boolean`	`containsValue(V value)` Returns whether the store contains the given value.
`DataStoreFactory`	`getDataStoreFactory()` Returns the data store factory.
`String`	`getId()` Returns the data store ID.
`boolean`	`isEmpty()` Returns whether there are any stored keys.
`int`	`size()` Returns the number of stored keys.

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

Methods inherited from interface com.google.api.client.util.store.DataStore
clear, delete, get, keySet, set, values

- Constructor Detail
  - AbstractDataStore
```
protected AbstractDataStore(DataStoreFactory dataStoreFactory,
                            String id)
```
    Parameters:
    
    dataStoreFactory - data store factory
    
    id - data store ID
- Method Detail
  - getDataStoreFactory
```
public DataStoreFactory getDataStoreFactory()
```
    Returns the data store factory.
    Overriding is only supported for the purpose of calling the super implementation and changing the return type, but nothing else.
  - getId
```
public final String getId()
```
    Description copied from interface: DataStore
    
    Returns the data store ID.
  - containsKey
```
public boolean containsKey(String key)
                    throws IOException
```
    Returns whether the store contains the given key.
    Default implementation is to call DataStore.get(String) and check if it is null.
    
    Specified by:
    
    containsKey in interface DataStore<V extends Serializable>
    
    Throws:
    
    IOException
  - containsValue
```
public boolean containsValue(V value)
                      throws IOException
```
    Returns whether the store contains the given value.
    Default implementation is to call Collection.contains(Object) on DataStore.values().
    
    Specified by:
    
    containsValue in interface DataStore<V extends Serializable>
    
    Throws:
    
    IOException
  - isEmpty
```
public boolean isEmpty()
                throws IOException
```
    Returns whether there are any stored keys.
    Default implementation is to check if size() is 0.
    
    Specified by:
    
    isEmpty in interface DataStore<V extends Serializable>
    
    Throws:
    
    IOException
  - size
```
public int size()
         throws IOException
```
    Returns the number of stored keys.
    Default implementation is to call Set.size() on DataStore.keySet().
    
    Specified by:
    
    size in interface DataStore<V extends Serializable>
    
    Throws:
    
    IOException

Class AbstractDataStore<V extends Serializable>

Constructor Summary

Constructors

Method Summary

Methods inherited from class java.lang.Object

Methods inherited from interface com.google.api.client.util.store.DataStore

Constructor Detail

AbstractDataStore

Method Detail

getDataStoreFactory

getId

containsKey

containsValue

isEmpty

size