org.apache.iotdb.db.metadata.mnode

类 InternalMNode

java.lang.Object

org.apache.iotdb.db.metadata.mnode.MNode

org.apache.iotdb.db.metadata.mnode.InternalMNode

所有已实现的接口:

Serializable, IMNode

直接已知子类:

EntityMNode, StorageGroupMNode

public class InternalMNode
extends MNode

This class is the implementation of Metadata Node. One MNode instance represents one node in the Metadata Tree

另请参阅:

序列化表格

字段概要

字段

限定符和类型	字段和说明
protected Map<String,IMNode>	children use in Measurement Node so it's protected suppress warnings reason: volatile for double synchronized check This will be a ConcurrentHashMap instance
protected Template	schemaTemplate

从类继承的字段 org.apache.iotdb.db.metadata.mnode.MNode

fullPath, name, parent

构造器概要

构造器

构造器和说明
InternalMNode(IMNode parent, String name) Constructor of MNode.

方法概要

限定符和类型	方法和说明
IMNode	addChild(IMNode child) Add a child to the current mnode.
void	addChild(String name, IMNode child) add a child to current mnode
void	deleteChild(String name) delete a child
static InternalMNode	deserializeFrom(MNodePlan plan)
IMNode	getChild(String name) get the child with the name
Map<String,IMNode>	getChildren()
Template	getSchemaTemplate()
Template	getUpperTemplate() get upper template of this node, remember we get nearest template alone this node to root
boolean	hasChild(String name) check whether the MNode has a child with the name
boolean	isUseTemplate()
void	replaceChild(String oldChildName, IMNode newChildNode) Replace a child of this mnode.
void	serializeTo(MLogWriter logWriter)
void	setChildren(Map<String,IMNode> children)
void	setSchemaTemplate(Template schemaTemplate)
void	setUseTemplate(boolean useTemplate)

从类继承的方法 org.apache.iotdb.db.metadata.mnode.MNode

equals, getAsEntityMNode, getAsMeasurementMNode, getAsStorageGroupMNode, getFullPath, getName, getParent, getPartialPath, hashCode, isEmptyInternal, isEntity, isMeasurement, isStorageGroup, setFullPath, setName, setParent, toString

从类继承的方法 java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

字段详细资料

children

protected transient volatile Map<String,IMNode> children

use in Measurement Node so it's protected suppress warnings reason: volatile for double synchronized check

This will be a ConcurrentHashMap instance

schemaTemplate

protected Template schemaTemplate

构造器详细资料

InternalMNode

public InternalMNode(IMNode parent,
                     String name)

Constructor of MNode.

方法详细资料

hasChild

public boolean hasChild(String name)

check whether the MNode has a child with the name

getChild

public IMNode getChild(String name)

get the child with the name

addChild

public void addChild(String name,
                     IMNode child)

add a child to current mnode

参数:

name - child's name

child - child's node

addChild

public IMNode addChild(IMNode child)

Add a child to the current mnode.

This method will not take the child's name as one of the inputs and will also make this Mnode be child node's parent. All is to reduce the probability of mistaken by users and be more convenient for users to use. And the return of this method is used to conveniently construct a chain of time series for users.

参数:

child - child's node

返回:

return the MNode already added

deleteChild

public void deleteChild(String name)

delete a child

replaceChild

public void replaceChild(String oldChildName,
                         IMNode newChildNode)

Replace a child of this mnode. New child's name must be the same as old child's name.

参数:

oldChildName - measurement name

newChildNode - new child node

getChildren

public Map<String,IMNode> getChildren()

setChildren

public void setChildren(Map<String,IMNode> children)

getUpperTemplate

public Template getUpperTemplate()

get upper template of this node, remember we get nearest template alone this node to root

返回:

upper template

getSchemaTemplate

public Template getSchemaTemplate()

setSchemaTemplate

public void setSchemaTemplate(Template schemaTemplate)

isUseTemplate

public boolean isUseTemplate()

指定者:

isUseTemplate 在接口中 IMNode

覆盖:

isUseTemplate 在类中 MNode

setUseTemplate

public void setUseTemplate(boolean useTemplate)

serializeTo

public void serializeTo(MLogWriter logWriter)
                 throws IOException

抛出:

IOException

deserializeFrom

public static InternalMNode deserializeFrom(MNodePlan plan)