com.powsybl.afs.storage

Interface AppStorage

All Superinterfaces:

java.lang.AutoCloseable

All Known Subinterfaces:

ListenableAppStorage

All Known Implementing Classes:

DefaultListenableAppStorage, ForwardingAppStorage, LocalAppStorage, MapDbAppStorage, RemoteAppStorage, RemoteListenableAppStorage

public interface AppStorage
extends java.lang.AutoCloseable

A storage which maintains data for an application file system. This is a low level object, and should not be used by users of the AFS API, but only when extending the AFS API with a new storage implementation or new file types for example.

An AppStorage implements low level methods to walk through a filesystem and to write and read data from this filesystem. It relies on nodes uniquely identified by and ID.

Method Summary

Modifier and Type	Method and Description
void	addDependency(java.lang.String nodeId, java.lang.String name, java.lang.String toNodeId) Adds a dependency from node with ID nodeId to node with ID toNodeId.
void	addDoubleTimeSeriesData(java.lang.String nodeId, int version, java.lang.String timeSeriesName, java.util.List<DoubleDataChunk> chunks) Adds data (double) to the time series with names timeSeriesNames associated with node with ID nodeId.
void	addStringTimeSeriesData(java.lang.String nodeId, int version, java.lang.String timeSeriesName, java.util.List<StringDataChunk> chunks) Adds data (string) to the time series with names timeSeriesNames associated with node with ID nodeId.
void	clearTimeSeries(java.lang.String nodeId) Deletes time series associated with node with ID nodeId
void	close() Closes any resource associated with this storage.
NodeInfo	createNode(java.lang.String parentNodeId, java.lang.String name, java.lang.String nodePseudoClass, java.lang.String description, int version, NodeGenericMetadata genericMetadata) Creates a new node in the tree under a parent node.
NodeInfo	createRootNodeIfNotExists(java.lang.String name, java.lang.String nodePseudoClass) Returns the root node of the tree, creating it if it does not exist.
void	createTimeSeries(java.lang.String nodeId, TimeSeriesMetadata metadata) Creates a time series associated with node with ID nodeId.
boolean	dataExists(java.lang.String nodeId, java.lang.String name) Returns true if data named name associated with the node with ID nodeId exists.
java.lang.String	deleteNode(java.lang.String nodeId) Deletes the node with ID nodeId.
void	flush() Flush any changes to underlying storage.
java.util.Set<NodeInfo>	getBackwardDependencies(java.lang.String nodeId) Gets NodeInfo objects of nodes which depend on the node with ID nodeId.
java.util.Optional<NodeInfo>	getChildNode(java.lang.String nodeId, java.lang.String name) Gets NodeInfo for child node with name name of the node with ID nodeId, empty if such a node does not exist.
java.util.List<NodeInfo>	getChildNodes(java.lang.String nodeId) Gets NodeInfo for child nodes of the node with ID nodeId.
java.util.Set<java.lang.String>	getDataNames(java.lang.String nodeId) Returns the lists of names of data associated to the node with ID nodeId.
java.util.Set<NodeDependency>	getDependencies(java.lang.String nodeId) Gets all dependencies (NodeDependency objects) of node with ID nodeId.
java.util.Set<NodeInfo>	getDependencies(java.lang.String nodeId, java.lang.String name) Gets NodeInfo objects for dependencies of node with ID nodeId, and associated to the dependency name name.
java.util.Map<java.lang.String,java.util.List<DoubleDataChunk>>	getDoubleTimeSeriesData(java.lang.String nodeId, java.util.Set<java.lang.String> timeSeriesNames, int version) Gets data (double) for the time series with names timeSeriesNames associated with node with ID nodeId.
java.lang.String	getFileSystemName()
NodeInfo	getNodeInfo(java.lang.String nodeId) Gets NodeInfo object for the node with ID nodeId.
java.util.Optional<NodeInfo>	getParentNode(java.lang.String nodeId) Gets NodeInfo for parent node of the node with ID nodeId, empty if such a node does not exist.
java.util.Map<java.lang.String,java.util.List<StringDataChunk>>	getStringTimeSeriesData(java.lang.String nodeId, java.util.Set<java.lang.String> timeSeriesNames, int version) Gets data (string) for the time series with names timeSeriesNames associated with node with ID nodeId.
java.util.Set<java.lang.Integer>	getTimeSeriesDataVersions(java.lang.String nodeId) Gets versions of time series data associated with node with ID nodeId.
java.util.Set<java.lang.Integer>	getTimeSeriesDataVersions(java.lang.String nodeId, java.lang.String timeSeriesName) Gets versions of data for the time series with name timeSeriesName associated with node with ID nodeId.
java.util.List<TimeSeriesMetadata>	getTimeSeriesMetadata(java.lang.String nodeId, java.util.Set<java.lang.String> timeSeriesNames) Returns metadata of time series associated with node with ID nodeId and with name in timeSeriesNames.
java.util.Set<java.lang.String>	getTimeSeriesNames(java.lang.String nodeId) Returns names of all time series associated with node with ID nodeId.
boolean	isClosed() Check if storage is closed.
boolean	isRemote()
boolean	isWritable(java.lang.String nodeId)
java.util.Optional<java.io.InputStream>	readBinaryData(java.lang.String nodeId, java.lang.String name) Reads data associated to the node with ID nodeId.
boolean	removeData(java.lang.String nodeId, java.lang.String name) Removes the data blob named name associated with the node with ID nodeId.
void	removeDependency(java.lang.String nodeId, java.lang.String name, java.lang.String toNodeId) Removes a dependency named name from node with ID nodeId to node with ID toNodeId.
default void	renameNode(java.lang.String nodeId, java.lang.String name) Rename the node with ID nodeId
void	setDescription(java.lang.String nodeId, java.lang.String description)
void	setParentNode(java.lang.String nodeId, java.lang.String newParentNodeId) Sets new parent node for the node with ID nodeId.
boolean	timeSeriesExists(java.lang.String nodeId, java.lang.String timeSeriesName) Returns true if a time series named timeSeriesName associated with the node with ID nodeId exists.
void	updateModificationTime(java.lang.String nodeId)
java.io.OutputStream	writeBinaryData(java.lang.String nodeId, java.lang.String name) Returns an OutputStream to write data associated to the node with ID nodeId.

Method Detail

getFileSystemName

java.lang.String getFileSystemName()

isRemote

boolean isRemote()

createRootNodeIfNotExists

NodeInfo createRootNodeIfNotExists(java.lang.String name,
                                   java.lang.String nodePseudoClass)

Returns the root node of the tree, creating it if it does not exist.

createNode

NodeInfo createNode(java.lang.String parentNodeId,
                    java.lang.String name,
                    java.lang.String nodePseudoClass,
                    java.lang.String description,
                    int version,
                    NodeGenericMetadata genericMetadata)

Creates a new node in the tree under a parent node. Returns NodeInfo corresponding to the newly created node.

isWritable

boolean isWritable(java.lang.String nodeId)

getNodeInfo

NodeInfo getNodeInfo(java.lang.String nodeId)

Gets NodeInfo object for the node with ID nodeId.

setDescription

void setDescription(java.lang.String nodeId,
                    java.lang.String description)

updateModificationTime

void updateModificationTime(java.lang.String nodeId)

getChildNodes

java.util.List<NodeInfo> getChildNodes(java.lang.String nodeId)

Gets NodeInfo for child nodes of the node with ID nodeId.

getChildNode

java.util.Optional<NodeInfo> getChildNode(java.lang.String nodeId,
                                          java.lang.String name)

Gets NodeInfo for child node with name name of the node with ID nodeId, empty if such a node does not exist.

getParentNode

java.util.Optional<NodeInfo> getParentNode(java.lang.String nodeId)

Gets NodeInfo for parent node of the node with ID nodeId, empty if such a node does not exist.

setParentNode

void setParentNode(java.lang.String nodeId,
                   java.lang.String newParentNodeId)

Sets new parent node for the node with ID nodeId.

deleteNode

java.lang.String deleteNode(java.lang.String nodeId)

Deletes the node with ID nodeId.

renameNode

default void renameNode(java.lang.String nodeId,
                        java.lang.String name)

Rename the node with ID nodeId

readBinaryData

java.util.Optional<java.io.InputStream> readBinaryData(java.lang.String nodeId,
                                                       java.lang.String name)

Reads data associated to the node with ID nodeId. A node may have several data blobs associated to it, with different names. The parameters name specifies which of those data is requested.

writeBinaryData

java.io.OutputStream writeBinaryData(java.lang.String nodeId,
                                     java.lang.String name)

Returns an OutputStream to write data associated to the node with ID nodeId. A node may have several data blobs associated to it, with different names.

dataExists

boolean dataExists(java.lang.String nodeId,
                   java.lang.String name)

Returns true if data named name associated with the node with ID nodeId exists.

getDataNames

java.util.Set<java.lang.String> getDataNames(java.lang.String nodeId)

Returns the lists of names of data associated to the node with ID nodeId.

removeData

boolean removeData(java.lang.String nodeId,
                   java.lang.String name)

Removes the data blob named name associated with the node with ID nodeId.

createTimeSeries

void createTimeSeries(java.lang.String nodeId,
                      TimeSeriesMetadata metadata)

Creates a time series associated with node with ID nodeId.

getTimeSeriesNames

java.util.Set<java.lang.String> getTimeSeriesNames(java.lang.String nodeId)

Returns names of all time series associated with node with ID nodeId.

timeSeriesExists

boolean timeSeriesExists(java.lang.String nodeId,
                         java.lang.String timeSeriesName)

Returns true if a time series named timeSeriesName associated with the node with ID nodeId exists.

getTimeSeriesMetadata

java.util.List<TimeSeriesMetadata> getTimeSeriesMetadata(java.lang.String nodeId,
                                                         java.util.Set<java.lang.String> timeSeriesNames)

Returns metadata of time series associated with node with ID nodeId and with name in timeSeriesNames.

getTimeSeriesDataVersions

java.util.Set<java.lang.Integer> getTimeSeriesDataVersions(java.lang.String nodeId)

Gets versions of time series data associated with node with ID nodeId.

getTimeSeriesDataVersions

java.util.Set<java.lang.Integer> getTimeSeriesDataVersions(java.lang.String nodeId,
                                                           java.lang.String timeSeriesName)

Gets versions of data for the time series with name timeSeriesName associated with node with ID nodeId.

getDoubleTimeSeriesData

java.util.Map<java.lang.String,java.util.List<DoubleDataChunk>> getDoubleTimeSeriesData(java.lang.String nodeId,
                                                                                        java.util.Set<java.lang.String> timeSeriesNames,
                                                                                        int version)

Gets data (double) for the time series with names timeSeriesNames associated with node with ID nodeId.

addDoubleTimeSeriesData

void addDoubleTimeSeriesData(java.lang.String nodeId,
                             int version,
                             java.lang.String timeSeriesName,
                             java.util.List<DoubleDataChunk> chunks)

Adds data (double) to the time series with names timeSeriesNames associated with node with ID nodeId.

getStringTimeSeriesData

java.util.Map<java.lang.String,java.util.List<StringDataChunk>> getStringTimeSeriesData(java.lang.String nodeId,
                                                                                        java.util.Set<java.lang.String> timeSeriesNames,
                                                                                        int version)

Gets data (string) for the time series with names timeSeriesNames associated with node with ID nodeId.

addStringTimeSeriesData

void addStringTimeSeriesData(java.lang.String nodeId,
                             int version,
                             java.lang.String timeSeriesName,
                             java.util.List<StringDataChunk> chunks)

Adds data (string) to the time series with names timeSeriesNames associated with node with ID nodeId.

clearTimeSeries

void clearTimeSeries(java.lang.String nodeId)

Deletes time series associated with node with ID nodeId

addDependency

void addDependency(java.lang.String nodeId,
                   java.lang.String name,
                   java.lang.String toNodeId)

Adds a dependency from node with ID nodeId to node with ID toNodeId. The dependency will be associated with the specified name.

getDependencies

java.util.Set<NodeInfo> getDependencies(java.lang.String nodeId,
                                        java.lang.String name)

Gets NodeInfo objects for dependencies of node with ID nodeId, and associated to the dependency name name.

getDependencies

java.util.Set<NodeDependency> getDependencies(java.lang.String nodeId)

Gets all dependencies (NodeDependency objects) of node with ID nodeId.

getBackwardDependencies

java.util.Set<NodeInfo> getBackwardDependencies(java.lang.String nodeId)

Gets NodeInfo objects of nodes which depend on the node with ID nodeId.

removeDependency

void removeDependency(java.lang.String nodeId,
                      java.lang.String name,
                      java.lang.String toNodeId)

Removes a dependency named name from node with ID nodeId to node with ID toNodeId.

flush

void flush()

Flush any changes to underlying storage.

isClosed

boolean isClosed()

Check if storage is closed.

close

void close()

Closes any resource associated with this storage.

Specified by:

close in interface java.lang.AutoCloseable