Package org.apache.iotdb.db.metadata.mtree.store

Class MemMTreeStore

java.lang.Object

org.apache.iotdb.db.metadata.mtree.store.MemMTreeStore

All Implemented Interfaces:

IMTreeStore

public class MemMTreeStore
extends java.lang.Object
implements IMTreeStore

This is a memory-based implementation of IMTreeStore. All MNodes are stored in memory.

Constructor Summary

Constructors

Constructor	Description
MemMTreeStore(org.apache.iotdb.commons.path.PartialPath rootPath, boolean isStorageGroup)

Method Summary

Modifier and Type	Method	Description
IMNode	addChild(IMNode parent, java.lang.String childName, IMNode child)
void	clear()
boolean	createSnapshot(java.io.File snapshotDir)
void	deleteChild(IMNode parent, java.lang.String childName)
IMNode	getChild(IMNode parent, java.lang.String name)
IMNodeIterator	getChildrenIterator(IMNode parent)
IMNode	getRoot()
boolean	hasChild(IMNode parent, java.lang.String name)
static MemMTreeStore	loadFromSnapshot(java.io.File snapshotDir, java.util.function.Consumer<IMeasurementMNode> measurementProcess)
void	pin(IMNode node)
void	setAlias(IMeasurementMNode measurementMNode, java.lang.String alias)
IEntityMNode	setToEntity(IMNode node)
IMNode	setToInternal(IEntityMNode entityMNode)
void	unPin(IMNode node)
void	unPinPath(IMNode node)
void	updateMNode(IMNode node)

Methods inherited from class java.lang.Object

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

Constructor Detail

MemMTreeStore

public MemMTreeStore(org.apache.iotdb.commons.path.PartialPath rootPath,
                     boolean isStorageGroup)

Method Detail

getRoot

public IMNode getRoot()

Specified by:

getRoot in interface IMTreeStore

hasChild

public boolean hasChild(IMNode parent,
                        java.lang.String name)

Specified by:

hasChild in interface IMTreeStore

getChild

public IMNode getChild(IMNode parent,
                       java.lang.String name)

Specified by:

getChild in interface IMTreeStore

getChildrenIterator

public IMNodeIterator getChildrenIterator(IMNode parent)

Specified by:

getChildrenIterator in interface IMTreeStore

addChild

public IMNode addChild(IMNode parent,
                       java.lang.String childName,
                       IMNode child)

Specified by:

addChild in interface IMTreeStore

deleteChild

public void deleteChild(IMNode parent,
                        java.lang.String childName)

Specified by:

deleteChild in interface IMTreeStore

updateMNode

public void updateMNode(IMNode node)

Specified by:

updateMNode in interface IMTreeStore

setToEntity

public IEntityMNode setToEntity(IMNode node)

Specified by:

setToEntity in interface IMTreeStore

setToInternal

public IMNode setToInternal(IEntityMNode entityMNode)

Specified by:

setToInternal in interface IMTreeStore

setAlias

public void setAlias(IMeasurementMNode measurementMNode,
                     java.lang.String alias)

Specified by:

setAlias in interface IMTreeStore

pin

public void pin(IMNode node)

Specified by:

pin in interface IMTreeStore

unPin

public void unPin(IMNode node)

Specified by:

unPin in interface IMTreeStore

unPinPath

public void unPinPath(IMNode node)

Specified by:

unPinPath in interface IMTreeStore

clear

public void clear()

Specified by:

clear in interface IMTreeStore

createSnapshot

public boolean createSnapshot(java.io.File snapshotDir)

Specified by:

createSnapshot in interface IMTreeStore

loadFromSnapshot

public static MemMTreeStore loadFromSnapshot(java.io.File snapshotDir,
                                             java.util.function.Consumer<IMeasurementMNode> measurementProcess)
                                      throws java.io.IOException

Throws:

java.io.IOException