public class HGStoreSubgraph extends java.lang.Object implements StorageGraph
A StorageGraph
bound to a HGStore
. It's based on a set of root handles
and its iterator will traverse the primitive storage graph starting from those roots.
Constructor and Description |
---|
HGStoreSubgraph(HGHandle root,
HGStore store)
Construct a new
HGStore based StorageGraph |
HGStoreSubgraph(java.util.Set<HGHandle> roots,
HGStore store)
Construct a new
HGStore based StorageGraph
with multiple roots. |
Modifier and Type | Method and Description |
---|---|
byte[] |
getData(HGPersistentHandle handle) |
HGPersistentHandle[] |
getLink(HGPersistentHandle handle) |
java.util.Set<HGPersistentHandle> |
getRoots()
Return the set of root handles for this storage sub-graph.
|
java.util.Iterator<Pair<HGPersistentHandle,java.lang.Object>> |
iterator() |
HGPersistentHandle |
store(HGPersistentHandle handle,
byte[] data) |
HGPersistentHandle |
store(HGPersistentHandle handle,
HGPersistentHandle[] link) |
public HGStoreSubgraph(HGHandle root, HGStore store)
Construct a new HGStore
based StorageGraph
root
- A single root, starting point of the storage graph.store
- The backing store instance.public HGStoreSubgraph(java.util.Set<HGHandle> roots, HGStore store)
Construct a new HGStore
based StorageGraph
with multiple roots.
root
- A single root, starting point of the storage graph.store
- The backing store instance.public byte[] getData(HGPersistentHandle handle)
getData
in interface StorageGraph
public HGPersistentHandle[] getLink(HGPersistentHandle handle)
getLink
in interface StorageGraph
public HGPersistentHandle store(HGPersistentHandle handle, HGPersistentHandle[] link)
store
in interface StorageGraph
public HGPersistentHandle store(HGPersistentHandle handle, byte[] data)
store
in interface StorageGraph
public java.util.Set<HGPersistentHandle> getRoots()
StorageGraph
Return the set of root handles for this storage sub-graph.
getRoots
in interface StorageGraph
public java.util.Iterator<Pair<HGPersistentHandle,java.lang.Object>> iterator()
iterator
in interface java.lang.Iterable<Pair<HGPersistentHandle,java.lang.Object>>
iterator
in interface StorageGraph