com.sleepycat.persist.raw

Class RawStore

java.lang.Object

com.sleepycat.persist.raw.RawStore

All Implemented Interfaces:

java.io.Closeable, java.lang.AutoCloseable

public class RawStore
extends java.lang.Object
implements java.io.Closeable

Provides access to the raw data in a store for use by general purpose tools. A RawStore provides access to stored entities without using entity classes or key classes. Keys are represented as simple type objects or, for composite keys, as RawObject instances, and entities are represented as RawObject instances.

RawStore objects are thread-safe. Multiple threads may safely call the methods of a shared RawStore object.

When using a RawStore, the current persistent class definitions are not used. Instead, the previously stored metadata and class definitions are used. This has several implications:

1. An EntityModel may not be specified using StoreConfig.setModel(com.sleepycat.persist.model.EntityModel). In other words, the configured model must be null (the default).
2. When storing entities, their format will not automatically be evolved to the current class definition, even if the current class definition has changed.

Author:

Mark Hayes

Constructor Summary

Constructors

Constructor and Description
RawStore(Environment env, java.lang.String storeName, StoreConfig config) Opens an entity store for raw data access.

Method Summary

Modifier and Type	Method and Description
void	close() Closes all databases and sequences that were opened by this model.
StoreConfig	getConfig() Returns a copy of the entity store configuration.
Environment	getEnvironment() Returns the environment associated with this store.
EntityModel	getModel() Returns the last configured and stored entity model for this store.
Mutations	getMutations() Returns the set of mutations that were configured and stored previously.
PrimaryIndex<java.lang.Object,RawObject>	getPrimaryIndex(java.lang.String entityClass) Opens the primary index for a given entity class.
SecondaryIndex<java.lang.Object,java.lang.Object,RawObject>	getSecondaryIndex(java.lang.String entityClass, java.lang.String keyName) Opens the secondary index for a given entity class and secondary key name.
java.lang.String	getStoreName() Returns the name of this store.

Methods inherited from class java.lang.Object

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

Constructor Detail

RawStore

public RawStore(Environment env,
                java.lang.String storeName,
                StoreConfig config)
         throws StoreNotFoundException,
                DatabaseException

Opens an entity store for raw data access.

Parameters:

env - an open Berkeley DB environment.

storeName - the name of the entity store within the given environment.

config - the store configuration, or null to use default configuration properties.

Throws:

java.lang.IllegalArgumentException - if the Environment is read-only and the config ReadOnly property is false.

StoreNotFoundException

DatabaseException

Method Detail

getPrimaryIndex

public PrimaryIndex<java.lang.Object,RawObject> getPrimaryIndex(java.lang.String entityClass)
                                                         throws DatabaseException

Opens the primary index for a given entity class.

Throws:

DatabaseException - the base class for all BDB exceptions.

getSecondaryIndex

public SecondaryIndex<java.lang.Object,java.lang.Object,RawObject> getSecondaryIndex(java.lang.String entityClass,
                                                                                     java.lang.String keyName)
                                                                              throws DatabaseException

Opens the secondary index for a given entity class and secondary key name.

Throws:

DatabaseException - the base class for all BDB exceptions.

getEnvironment

public Environment getEnvironment()

Returns the environment associated with this store.

getConfig

public StoreConfig getConfig()

Returns a copy of the entity store configuration.

getStoreName

public java.lang.String getStoreName()

Returns the name of this store.

getModel

public EntityModel getModel()

Returns the last configured and stored entity model for this store.

getMutations

public Mutations getMutations()

Returns the set of mutations that were configured and stored previously.

close

public void close()
           throws DatabaseException

Closes all databases and sequences that were opened by this model. No databases opened via this store may be in use.

WARNING: To guard against memory leaks, the application should discard all references to the closed handle. While BDB makes an effort to discard references from closed objects to the allocated memory for an environment, this behavior is not guaranteed. The safe course of action for an application is to discard all references to closed BDB objects.

Specified by:

close in interface java.io.Closeable

Specified by:

close in interface java.lang.AutoCloseable

Throws:

DatabaseException - the base class for all BDB exceptions.