DataStore

Type Parameters:

V - serializable type of the mapped value

All Known Implementing Classes:

AbstractDataStore
```
public interface DataStore<V extends Serializable>
```
Stores and manages serializable data of a specific type, where the key is a string and the value is a Serializable object.
null keys or values are not allowed. Implementation should be thread-safe.

Since:

1.16

Method Summary

All Methods

Instance Methods

Abstract Methods
Modifier and Type	Method and Description
`DataStore<V>`	`clear()` Deletes all of the stored keys and values.
`boolean`	`containsKey(String key)` Returns whether the store contains the given key.
`boolean`	`containsValue(V value)` Returns whether the store contains the given value.
`DataStore<V>`	`delete(String key)` Deletes the stored key and value based on the given key, or ignored if the key doesn't already exist.
`V`	`get(String key)` Returns the stored value for the given key or `null` if not found.
`DataStoreFactory`	`getDataStoreFactory()` Returns the data store factory.
`String`	`getId()` Returns the data store ID.
`boolean`	`isEmpty()` Returns whether there are any stored keys.
`Set<String>`	`keySet()` Returns the unmodifiable set of all stored keys.
`DataStore<V>`	`set(String key, V value)` Stores the given value for the given key (replacing any existing value).
`int`	`size()` Returns the number of stored keys.
`Collection<V>`	`values()` Returns the unmodifiable collection of all stored values.

- Method Detail
  - getDataStoreFactory
```
DataStoreFactory getDataStoreFactory()
```
    Returns the data store factory.
  - getId
```
String getId()
```
    Returns the data store ID.
  - size
```
int size()
  throws IOException
```
    Returns the number of stored keys.
    
    Throws:
    
    IOException
  - isEmpty
```
boolean isEmpty()
         throws IOException
```
    Returns whether there are any stored keys.
    
    Throws:
    
    IOException
  - containsKey
```
boolean containsKey(String key)
             throws IOException
```
    Returns whether the store contains the given key.
    
    Throws:
    
    IOException
  - containsValue
```
boolean containsValue(V value)
               throws IOException
```
    Returns whether the store contains the given value.
    
    Throws:
    
    IOException
  - keySet
```
Set<String> keySet()
            throws IOException
```
    Returns the unmodifiable set of all stored keys.
    Order of the keys is not specified.
    
    Throws:
    
    IOException
  - values
```
Collection<V> values()
              throws IOException
```
    Returns the unmodifiable collection of all stored values.
    
    Throws:
    
    IOException
  - get
```
V get(String key)
throws IOException
```
    Returns the stored value for the given key or null if not found.
    
    Parameters:
    
    key - key or null for null result
    
    Throws:
    
    IOException
  - set
```
DataStore<V> set(String key,
                 V value)
          throws IOException
```
    Stores the given value for the given key (replacing any existing value).
    
    Parameters:
    
    key - key
    
    value - value object
    
    Throws:
    
    IOException
  - clear
```
DataStore<V> clear()
            throws IOException
```
    Deletes all of the stored keys and values.
    
    Throws:
    
    IOException
  - delete
```
DataStore<V> delete(String key)
             throws IOException
```
    Deletes the stored key and value based on the given key, or ignored if the key doesn't already exist.
    
    Parameters:
    
    key - key or null to ignore
    
    Throws:
    
    IOException

Interface DataStore<V extends Serializable>

Method Summary

Method Detail

getDataStoreFactory

getId

size

isEmpty

containsKey

containsValue

keySet

values

get

set

clear

delete