Class FileDataStoreFactory.FileDataStore<V extends Serializable>

java.lang.Object

com.google.api.client.util.store.AbstractDataStore<V>

com.google.api.client.util.store.AbstractMemoryDataStore<V>

com.google.api.client.util.store.FileDataStoreFactory.FileDataStore<V>

Type Parameters:

V - serializable type of the mapped value

All Implemented Interfaces:

DataStore<V>

Enclosing class:

FileDataStoreFactory

static class FileDataStoreFactory.FileDataStore<V extends Serializable>
extends AbstractMemoryDataStore<V>

File data store that inherits from the abstract memory data store because the key-value pairs are stored in a memory cache, and saved in the file (see save() when changing values.

Since:

1.16

Field Summary

Fields

Modifier and Type	Field	Description
private final File	dataFile	File to store data.

Fields inherited from class AbstractMemoryDataStore

keyValueMap

Constructor Summary

Constructors

Constructor	Description
FileDataStore(FileDataStoreFactory dataStore, File dataDirectory, String id)

Method Summary

Modifier and Type	Method	Description
FileDataStoreFactory	getDataStoreFactory()	Returns the data store factory.
void	save()	Persist the key-value map into storage at the end of AbstractMemoryDataStore.set(String, V), AbstractMemoryDataStore.delete(String), and AbstractMemoryDataStore.clear().

Methods inherited from class AbstractMemoryDataStore

clear, containsKey, containsValue, delete, get, isEmpty, keySet, set, size, toString, values

Methods inherited from class AbstractDataStore

getId

Methods inherited from class Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Details

dataFile

private final File dataFile

File to store data.

Constructor Details

FileDataStore

FileDataStore(FileDataStoreFactory dataStore,
 File dataDirectory,
 String id)
       throws IOException

Throws:

IOException

Method Details

save

public void save()
          throws IOException

Description copied from class: AbstractMemoryDataStore

Persist the key-value map into storage at the end of AbstractMemoryDataStore.set(String, V), AbstractMemoryDataStore.delete(String), and AbstractMemoryDataStore.clear().

Overrides:

save in class AbstractMemoryDataStore<V extends Serializable>

Throws:

IOException

getDataStoreFactory

public FileDataStoreFactory getDataStoreFactory()

Description copied from class: AbstractDataStore

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.

Specified by:

getDataStoreFactory in interface DataStore<V extends Serializable>

Overrides:

getDataStoreFactory in class AbstractDataStore<V extends Serializable>