engine.resources.database

Class ObjectDatabase

java.lang.Object

engine.resources.database.ObjectDatabase

All Implemented Interfaces:

java.lang.Runnable

public class ObjectDatabase
extends java.lang.Object
implements java.lang.Runnable

Constructor Summary

Constructors

Constructor and Description
ObjectDatabase(java.lang.String name, boolean allowCreate, boolean useCheckpointThread, boolean allowTransactional)

Method Summary

Methods

Modifier and Type	Method and Description
void	close()
void	compress()
<K,V> boolean	contains(java.lang.Object key, java.lang.Class<K> keyClass, java.lang.Class<V> valueClass) Checks if the Database contains a value associated to the given key.
<K,V> void	delete(java.lang.Object key, java.lang.Class<K> keyClass, java.lang.Class<V> valueClass) Deletes an object by its PrimaryKey(usually objectId).
<K,V> void	delete(java.lang.Object key, java.lang.Class<K> keyClass, java.lang.Class<V> valueClass, com.sleepycat.je.Transaction txn) Deletes an object by its PrimaryKey(usually objectId).
<K,V> V	get(java.lang.Object key, java.lang.Class<K> keyClass, java.lang.Class<V> valueClass) Gets an object by its PrimaryKey(usually objectId).
<K,V> com.sleepycat.persist.EntityCursor<V>	getCursor(java.lang.Class<K> keyClass, java.lang.Class<V> valueClass) Gets a Cursor for iterating through the DB records.
com.sleepycat.persist.EntityStore	getEntityStore()
com.sleepycat.je.Environment	getEnvironment()
<K,V> void	put(java.lang.Object value, java.lang.Class<K> keyClass, java.lang.Class<V> valueClass) Puts an object into the EntityStore(non-transactional)
<K,V> void	put(java.lang.Object value, java.lang.Class<K> keyClass, java.lang.Class<V> valueClass, com.sleepycat.je.Transaction txn) Puts an object into the EntityStore(transactional)
void	run()

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

ObjectDatabase

public ObjectDatabase(java.lang.String name,
              boolean allowCreate,
              boolean useCheckpointThread,
              boolean allowTransactional)

Method Detail

put

public <K,V> void put(java.lang.Object value,
             java.lang.Class<K> keyClass,
             java.lang.Class<V> valueClass)

Puts an object into the EntityStore(non-transactional)

Parameters:

value - The Object that gets stored.

keyClass - The Class of the PrimaryKey

valueClass - The Class of the object that gets stored.

put

public <K,V> void put(java.lang.Object value,
             java.lang.Class<K> keyClass,
             java.lang.Class<V> valueClass,
             com.sleepycat.je.Transaction txn)

Puts an object into the EntityStore(transactional)

Parameters:

value - The Object that gets stored.

keyClass - The Class of the PrimaryKey

valueClass - The Class of the object that gets stored.

get

public <K,V> V get(java.lang.Object key,
          java.lang.Class<K> keyClass,
          java.lang.Class<V> valueClass)

Gets an object by its PrimaryKey(usually objectId).

Parameters:

key - The Primary Key of the object that you want to get.

keyClass - The Class of the Primary Key.

valueClass - The Class of the Object that you want to get.

Returns:

The Object that is matching to the given PrimaryKey.

delete

public <K,V> void delete(java.lang.Object key,
                java.lang.Class<K> keyClass,
                java.lang.Class<V> valueClass)

Deletes an object by its PrimaryKey(usually objectId). (Non-transactional)

Parameters:

key - The Primary Key of the object that gets deleted.

keyClass - The Class of the Primary Key.

valueClass - The Class of the Object that gets deleted.

delete

public <K,V> void delete(java.lang.Object key,
                java.lang.Class<K> keyClass,
                java.lang.Class<V> valueClass,
                com.sleepycat.je.Transaction txn)

Deletes an object by its PrimaryKey(usually objectId). (Transactional)

Parameters:

key - The Primary Key of the object that gets deleted.

keyClass - The Class of the Primary Key.

valueClass - The Class of the Object that gets deleted.

getCursor

public <K,V> com.sleepycat.persist.EntityCursor<V> getCursor(java.lang.Class<K> keyClass,
                                                    java.lang.Class<V> valueClass)

Gets a Cursor for iterating through the DB records. Useful for spawning objects like buildings at server start.

Parameters:

keyClass - The Class of the Primary Key.

valueClass - The Class of the Values that are stored.

Returns:

The EntityCursor of this EntityStore.

contains

public <K,V> boolean contains(java.lang.Object key,
                     java.lang.Class<K> keyClass,
                     java.lang.Class<V> valueClass)

Checks if the Database contains a value associated to the given key.

Parameters:

key - The Primary Key.

keyClass - The class of the Primary Key.

valueClass - The class of the Value.

getEnvironment

public com.sleepycat.je.Environment getEnvironment()

getEntityStore

public com.sleepycat.persist.EntityStore getEntityStore()

compress

public void compress()

close

public void close()

run

public void run()

Specified by:

run in interface java.lang.Runnable