hydra

Class HDFSStoreHelper

java.lang.Object

hydra.HDFSStoreHelper

public class HDFSStoreHelper
extends Object

Helps clients use HDFSStoreDescription. Methods are thread-safe. HDFSStores are lazily created by region creation methods in RegionHelper, so the HDFS store creation methods here need only be used when RegionHelper is not being used to create regions.

Constructor Summary

Constructors

Constructor and Description
HDFSStoreHelper()

Method Summary

Modifier and Type	Method and Description
static com.gemstone.gemfire.cache.hdfs.HDFSStore	createHDFSStore(String hdfsStoreConfig) Creates the HDFS store using the given HDFS store configuration.
static com.gemstone.gemfire.cache.hdfs.HDFSStore	createHDFSStore(String hdfsStoreName, com.gemstone.gemfire.cache.hdfs.HDFSStoreFactory factory) Creates the HDFS store with the given name.
static com.gemstone.gemfire.cache.hdfs.HDFSStore	getHDFSStore(String hdfsStoreName)
static HDFSStoreDescription	getHDFSStoreDescription(String hdfsStoreConfig) Returns the HDFSStoreDescription with the given configuration name from HDFSStorePrms.names.
static com.gemstone.gemfire.cache.hdfs.HDFSStoreFactory	getHDFSStoreFactory(String hdfsStoreConfig) Returns a HDFS store factory for the given HDFS store configuration from HDFSStorePrms.names, configured using the corresponding HDFSStoreDescription.
static String	hdfsStoreToString(com.gemstone.gemfire.cache.hdfs.HDFSStore hdfsStore) Returns the given HDFS store as a string.

Methods inherited from class java.lang.Object

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

Constructor Detail

HDFSStoreHelper

public HDFSStoreHelper()

Method Detail

createHDFSStore

public static com.gemstone.gemfire.cache.hdfs.HDFSStore createHDFSStore(String hdfsStoreConfig)

Creates the HDFS store using the given HDFS store configuration. The HDFS store is configured using the HDFSStoreDescription corresponding to the HDFS store configuration from HDFSStorePrms.names. The name of the HDFS store is the same as its configuration name.

Lazily creates the disk store specified by #diskStoreName, using DiskStoreHelper.createDiskStore(String), if necessary. If the disk store has already been created, no checks are done to ensure that it is consistent with the configuration provided in DiskStorePrms.names.

Throws:

HydraRuntimeException - if an attempt is made to reconfigure an existing HDFS store.

createHDFSStore

public static com.gemstone.gemfire.cache.hdfs.HDFSStore createHDFSStore(String hdfsStoreName,
                                                                        com.gemstone.gemfire.cache.hdfs.HDFSStoreFactory factory)

Creates the HDFS store with the given name. The HDFS store is configured using the given factory.

Lazily creates the disk store specified by #diskStoreName, using DiskStoreHelper.createDiskStore(String), if necessary. If the disk store has already been created, no checks are done to ensure that it is consistent with the configuration provided in DiskStorePrms.names.

Throws:

HydraRuntimeException - if an attempt is made to reconfigure an existing HDFS store.

getHDFSStore

public static com.gemstone.gemfire.cache.hdfs.HDFSStore getHDFSStore(String hdfsStoreName)

hdfsStoreToString

public static String hdfsStoreToString(com.gemstone.gemfire.cache.hdfs.HDFSStore hdfsStore)

Returns the given HDFS store as a string.

getHDFSStoreFactory

public static com.gemstone.gemfire.cache.hdfs.HDFSStoreFactory getHDFSStoreFactory(String hdfsStoreConfig)

Returns a HDFS store factory for the given HDFS store configuration from HDFSStorePrms.names, configured using the corresponding HDFSStoreDescription.

getHDFSStoreDescription

public static HDFSStoreDescription getHDFSStoreDescription(String hdfsStoreConfig)

Returns the HDFSStoreDescription with the given configuration name from HDFSStorePrms.names.