com.amazon.carbonado.raw

Interface RawSupport<S extends Storable>

All Superinterfaces:

MasterSupport<S>, StorableSupport<S>, TriggerSupport<S>

public interface RawSupport<S extends Storable>
extends MasterSupport<S>

Provides runtime support for Storable classes generated by RawStorableGenerator.

Author:

Brian S O'Neill

Method Summary

Methods

Modifier and Type	Method and Description
void	decode(S dest, int generation, byte[] data) Used for decoding different generations of Storable.
Blob	getBlob(S storable, java.lang.String name, long locator) Returns the Blob for the given locator, returning null if not found.
Clob	getClob(S storable, java.lang.String name, long locator) Returns the Clob for the given locator, returning null if not found.
long	getLocator(Blob blob) Returns the locator for the given Blob, returning zero if null.
long	getLocator(Clob clob) Returns the locator for the given Clob, returning zero if null.
void	store(S storable, byte[] key, byte[] value) Try to store the entry referenced by the given key with the given value.
boolean	tryDelete(S storable, byte[] key) Try to delete the entry referenced by the given key.
boolean	tryInsert(S storable, byte[] key, byte[] value) Try to insert the entry referenced by the given key with the given value.
byte[]	tryLoad(S storable, byte[] key) Try to load the entry referenced by the given key, but return null if not found.

Methods inherited from interface com.amazon.carbonado.gen.MasterSupport

getSequenceValueProducer

Methods inherited from interface com.amazon.carbonado.gen.TriggerSupport

getDeleteTrigger, getInsertTrigger, getLoadTrigger, getUpdateTrigger, locallyDisableLoadTrigger, locallyEnableLoadTrigger

Methods inherited from interface com.amazon.carbonado.gen.StorableSupport

getRootRepository, isPropertySupported

Method Detail

tryLoad

byte[] tryLoad(S storable,
             byte[] key)
               throws FetchException

Try to load the entry referenced by the given key, but return null if not found.

Parameters:

storable - user storable which will have its properties set

key - non-null key to search for

Returns:

non-null value that was found, or null if not found

Throws:

FetchException

tryInsert

boolean tryInsert(S storable,
                byte[] key,
                byte[] value)
                  throws PersistException

Try to insert the entry referenced by the given key with the given value.

Parameters:

storable - user storable that key and value were derived from

key - non-null key to insert

value - non-null value to insert

Returns:

false if unique constraint prevents insert

Throws:

PersistException

store

void store(S storable,
         byte[] key,
         byte[] value)
           throws PersistException

Try to store the entry referenced by the given key with the given value. If the entry does not exist, insert it. Otherwise, update it.

Parameters:

storable - user storable that key and value were derived from

key - non-null key to store

value - non-null value to store

Throws:

PersistException

tryDelete

boolean tryDelete(S storable,
                byte[] key)
                  throws PersistException

Try to delete the entry referenced by the given key.

Parameters:

storable - user supplied storable object

key - non-null key to delete

Returns:

true if entry existed and is now deleted

Throws:

PersistException

getBlob

Blob getBlob(S storable,
           java.lang.String name,
           long locator)
             throws FetchException

Returns the Blob for the given locator, returning null if not found.

Parameters:

storable - storable that contains Blob

name - name of Blob property

locator - Blob locator

Throws:

FetchException

getLocator

long getLocator(Blob blob)
                throws PersistException

Returns the locator for the given Blob, returning zero if null.

Throws:

PersistException - if blob is unrecognized

getClob

Clob getClob(S storable,
           java.lang.String name,
           long locator)
             throws FetchException

Returns the Clob for the given locator, returning null if not found.

Parameters:

storable - storable that contains Blob

name - name of Clob property

locator - Clob locator

Throws:

FetchException

getLocator

long getLocator(Clob clob)
                throws PersistException

Returns the locator for the given Clob, returning zero if null.

Throws:

PersistException - if blob is unrecognized

decode

void decode(S dest,
          int generation,
          byte[] data)
            throws CorruptEncodingException

Used for decoding different generations of Storable. If layout generations are not supported, simply throw a CorruptEncodingException.

Parameters:

dest - storable to receive decoded properties

generation - storable layout generation number

data - decoded into properties, some of which may be dropped if destination storable doesn't have it

Throws:

CorruptEncodingException - if generation is unknown or if data cannot be decoded

Since:

1.2.1