com.bigdata.rawstore

Interface IAllocationManagerStore

All Superinterfaces:

IStreamStore

All Known Subinterfaces:

IMemoryManager, IRWStrategy

All Known Implementing Classes:

AbstractJournal, AllocationContext, Journal, MemoryManager, MemStore, MemStrategy, RWStrategy, StoreManager.ManagedJournal

public interface IAllocationManagerStore
extends IStreamStore

Adds capability to write and delete allocations within an IAllocationContext.

Author:

Bryan Thompson

See Also:

IAllocationManager, IAllocationContext

Method Summary

Methods

Modifier and Type	Method and Description
void	delete(long addr, IAllocationContext context) Delete the data associated with the address within the allocation context.
IPSOutputStream	getOutputStream(IAllocationContext context) Return an output stream which can be used to write on the backing store within the given allocation context.
long	write(ByteBuffer data, IAllocationContext context) Write the data within the allocation context.

Methods inherited from interface com.bigdata.rawstore.IStreamStore

getInputStream, getOutputStream

Method Detail

write

long write(ByteBuffer data,
         IAllocationContext context)

Write the data within the allocation context. The write is not visible outside of the allocation until the allocation context has been merged into the parent allocation context.

Parameters:

data - The data.

context - The allocation context.

Returns:

The address at which the data was written.

delete

void delete(long addr,
          IAllocationContext context)

Delete the data associated with the address within the allocation context. The delete is not visible outside of the allocation until the allocation context has been merged into the parent allocation context.

Parameters:

addr - The address whose allocation is to be deleted.

context - The allocation context.

getOutputStream

IPSOutputStream getOutputStream(IAllocationContext context)

Return an output stream which can be used to write on the backing store within the given allocation context. You can recover the address used to read back the data from the IPSOutputStream.

Parameters:

context - The context within which any allocations are made by the returned IPSOutputStream.

Returns:

an output stream to stream data to and to retrieve an address to later stream the data back.