Package com.mckoi.database
Class IndexStore.SnapshotIndexSet
- java.lang.Object
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- com.mckoi.database.IndexStore.SnapshotIndexSet
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- All Implemented Interfaces:
IndexSet
- Enclosing class:
- IndexStore
private class IndexStore.SnapshotIndexSet extends java.lang.Object implements IndexSet
The implementation of IndexSet which represents a mutable snapshot of the indices stored in this set.
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Field Summary
Fields Modifier and Type Field Description private ByteBuffer
buf
A snapshot of the allocation table.private int
buf_length
The length of the allocation table.private IntegerVector
deleted_sectors
The sectors that are to be deleted when a garbage collection cycle occurs.private java.util.ArrayList
integer_lists
The list of IndexIntegerList objects that have been returned via the 'getIndex(n)' method.private long
set_id
A unique id given to this index set.
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Constructor Summary
Constructors Constructor Description SnapshotIndexSet(byte[] in_buf, int length)
Constructor.
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description (package private) IntegerVector
allDeletedSectors()
Returns the sectors that were deleted when this store committed.(package private) byte[]
commit()
Creates a new buffer for an index store if it is committed.void
dispose()
Cleans up and disposes the resources associated with this set of index.void
finalize()
IndexStore.IndexIntegerList[]
getAllLists()
Returns all the lists that have been created by calls to 'getIndex'private ByteBuffer
getByteBuffer()
Returns the ByteBuffer for the snapshot of this store when it was created.(package private) long
getID()
Returns the unique id associated with this index store.IntegerListInterface
getIndex(int n)
Returns a mutable object that implements IntegerListInterface for the given index number in this set of indices.(package private) boolean
hasDeletedSectors()
Returns true if this store has deleted items.
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Field Detail
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set_id
private long set_id
A unique id given to this index set.
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buf
private ByteBuffer buf
A snapshot of the allocation table.
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buf_length
private int buf_length
The length of the allocation table.
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integer_lists
private java.util.ArrayList integer_lists
The list of IndexIntegerList objects that have been returned via the 'getIndex(n)' method.
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deleted_sectors
private IntegerVector deleted_sectors
The sectors that are to be deleted when a garbage collection cycle occurs.
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Method Detail
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getAllLists
public IndexStore.IndexIntegerList[] getAllLists()
Returns all the lists that have been created by calls to 'getIndex'
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getByteBuffer
private ByteBuffer getByteBuffer()
Returns the ByteBuffer for the snapshot of this store when it was created.
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getID
long getID()
Returns the unique id associated with this index store.
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hasDeletedSectors
boolean hasDeletedSectors()
Returns true if this store has deleted items.
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allDeletedSectors
IntegerVector allDeletedSectors()
Returns the sectors that were deleted when this store committed.
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commit
byte[] commit()
Creates a new buffer for an index store if it is committed. This also sets up the 'deleted_sectors' list which is a list of records deleted when this store commits.
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getIndex
public IntegerListInterface getIndex(int n)
Description copied from interface:IndexSet
Returns a mutable object that implements IntegerListInterface for the given index number in this set of indices.
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dispose
public void dispose()
Description copied from interface:IndexSet
Cleans up and disposes the resources associated with this set of index.
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finalize
public void finalize()
- Overrides:
finalize
in classjava.lang.Object
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