io.vertigo.dynamo.impl.kvstore

Interface KVStorePlugin

All Superinterfaces:

Component, Plugin

All Known Implementing Classes:

BerkeleyKVStorePlugin, DelayedMemoryKVStorePlugin

public interface KVStorePlugin
extends Plugin

This plugin defines the strategy used to store a 'collection' of elements. Each element is identified by a name.

Author:

pchretien

Method Summary

Methods

Modifier and Type	Method and Description
void	clear(String collection) Removes all elements from a collection.
int	count(String collection)
<C> Option<C>	find(String collection, String id, Class<C> clazz) Finds the optional element to which the id is mapped inside the specified collection.
<C> List<C>	findAll(String collection, int skip, Integer limit, Class<C> clazz) Finds all elements contained inside the specified collection.
List<String>	getCollections() Returns the list of collections managed by this plugin.
void	put(String collection, String id, Object element) Adds an element defined by an id in a collection.
void	remove(String collection, String id) Removes an element defined by an id from a collection.

Method Detail

getCollections

List<String> getCollections()

Returns the list of collections managed by this plugin.

Returns:

list of collections;

count

int count(String collection)

Parameters:

collection - the collection

Returns:

count of elements into collection

put

void put(String collection,
       String id,
       Object element)

Adds an element defined by an id in a collection.

Parameters:

collection - the collection

id - the id

element - the element

remove

void remove(String collection,
          String id)

Removes an element defined by an id from a collection. If the collection doesn't contain the is then a exception is thrown.

Parameters:

collection - the collection

id - the id

clear

void clear(String collection)

Removes all elements from a collection.

Parameters:

collection - the collection

find

<C> Option<C> find(String collection,
                 String id,
                 Class<C> clazz)

Finds the optional element to which the id is mapped inside the specified collection. If the element is not found then an empty option is returned.

Type Parameters:

C - Element type

Parameters:

collection - the collection

id - the id

clazz - the type of the searched element

Returns:

the option

findAll

<C> List<C> findAll(String collection,
                  int skip,
                  Integer limit,
                  Class<C> clazz)

Finds all elements contained inside the specified collection.

Type Parameters:

C - Element type

Parameters:

collection - the collection

skip - the position from which the elements are returned

limit - the limit size of elements

Returns:

the list of elements.