ai.grakn.migration.base

Interface Migrator

All Superinterfaces:

AutoCloseable

All Known Implementing Classes:

AbstractMigrator, CSVMigrator, JsonMigrator, SQLMigrator

public interface Migrator
extends AutoCloseable

The base Migrator interface

Provides common methods for migrating data from source into insert queries.

Author:

alexandraorth

Method Summary

Modifier and Type	Method and Description
void	load(String uri, String keyspace) Load using the default batch size
void	load(String uri, String keyspace, int batchSize, int numberActiveTasks) Migrate data constrained by this migrator using a loader configured by the provided parameters.
java.util.stream.Stream<InsertQuery>	migrate() Migrate all the data in the given file based on the given template.

Methods inherited from interface java.lang.AutoCloseable

close

Method Detail

migrate

java.util.stream.Stream<InsertQuery> migrate()

Migrate all the data in the given file based on the given template.

load

void load(String uri,
          String keyspace)

Load using the default batch size

Parameters:

uri - Uri where one instance of Grakn Engine is running

keyspace - The name of the keyspace where the data should be persisted

load

void load(String uri,
          String keyspace,
          int batchSize,
          int numberActiveTasks)

Migrate data constrained by this migrator using a loader configured by the provided parameters.

Parameters:

uri - Uri where one instance of Grakn Engine is running

keyspace - The name of the keyspace where the data should be persisted

batchSize - The number of queries to execute in one transaction

numberActiveTasks - Number of tasks running on the server at any one time. Consider this a safeguard to bot the system load. Default is 25.