com.caucho.distcache.jdbc
Class JdbcDataStore

java.lang.Object
  com.caucho.server.distcache.DataStore
      com.caucho.distcache.jdbc.JdbcDataStore

public class JdbcDataStore
extends DataStore

Manages the backing for the file database objects

Constructor Summary

JdbcDataStore(JdbcMnodeStore mnodeStore, java.lang.String tableName, java.lang.String serverName)

Method Summary

void	addOrphanListener(MnodeOrphanListener listener)
void	close()
void	destroy()
long	getCount()
void	init()
boolean	isDataAvailable(HashKey id) Checks if we have the data
boolean	load(HashKey id, CacheDataBacking dataBacking)
boolean	load(HashKey id, WriteStream os) Reads the object from the data store.
java.io.InputStream	openInputStream(HashKey id) Reads the object from the data store.
void	removeExpiredData() Clears the expired data
void	removeOrphanListener(MnodeOrphanListener listener)
void	save(HashKey valueHash, CacheDataBacking dataBacking)
boolean	save(HashKey id, java.io.InputStream is, int length) Saves the data, returning true on success.
boolean	save(HashKey id, StreamSource source, int length) Saves the data, returning true on success.
java.lang.String	toString()
boolean	updateExpires(HashKey id) Updates the expires time for the data.
void	validateDatabase() Clears the expired data

Methods inherited from class com.caucho.server.distcache.DataStore

load, loadBlob

Methods inherited from class java.lang.Object

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

Constructor Detail

JdbcDataStore

public JdbcDataStore(JdbcMnodeStore mnodeStore,
                     java.lang.String tableName,
                     java.lang.String serverName)
              throws java.lang.Exception

Throws:

java.lang.Exception

Method Detail

init

public void init()
          throws java.lang.Exception

Overrides:

init in class DataStore

Throws:

java.lang.Exception

addOrphanListener

public void addOrphanListener(MnodeOrphanListener listener)

Overrides:

addOrphanListener in class DataStore

removeOrphanListener

public void removeOrphanListener(MnodeOrphanListener listener)

Overrides:

removeOrphanListener in class DataStore

load

public boolean load(HashKey id,
                    WriteStream os)

Reads the object from the data store.

Overrides:

load in class DataStore

Parameters:

id - the hash identifier for the data

os - the WriteStream to hold the data

Returns:

true on successful load

load

public boolean load(HashKey id,
                    CacheDataBacking dataBacking)

Parameters:

valueKey -

dataBacking -

Returns:

isDataAvailable

public boolean isDataAvailable(HashKey id)

Checks if we have the data

Overrides:

isDataAvailable in class DataStore

Parameters:

id - the hash identifier for the data

Returns:

true on successful load

openInputStream

public java.io.InputStream openInputStream(HashKey id)

Reads the object from the data store.

Overrides:

openInputStream in class DataStore

Parameters:

id - the hash identifier for the data

os - the WriteStream to hold the data

Returns:

true on successful load

save

public boolean save(HashKey id,
                    StreamSource source,
                    int length)
             throws java.io.IOException

Saves the data, returning true on success.

Overrides:

save in class DataStore

Parameters:

id - the object's unique id.

is - the input stream to the serialized object

length - the length object the serialized object

Throws:

java.io.IOException

save

public void save(HashKey valueHash,
                 CacheDataBacking dataBacking)

Parameters:

valueHash -

dataBacking -

save

public boolean save(HashKey id,
                    java.io.InputStream is,
                    int length)
             throws java.io.IOException

Saves the data, returning true on success.

Overrides:

save in class DataStore

Parameters:

id - the object's unique id.

is - the input stream to the serialized object

length - the length object the serialized object

Throws:

java.io.IOException

updateExpires

public boolean updateExpires(HashKey id)

Updates the expires time for the data.

Overrides:

updateExpires in class DataStore

Parameters:

id - the hash identifier for the data

Returns:

true if the database contains the id

removeExpiredData

public void removeExpiredData()

Clears the expired data

Overrides:

removeExpiredData in class DataStore

validateDatabase

public void validateDatabase()

Clears the expired data

Overrides:

validateDatabase in class DataStore

getCount

public long getCount()

Overrides:

getCount in class DataStore

close

public void close()

destroy

public void destroy()

Overrides:

destroy in class DataStore

toString

public java.lang.String toString()

Overrides:

toString in class DataStore