org.apache.druid.metadata.storage.derby

Class DerbyConnector

java.lang.Object

org.apache.druid.metadata.SQLMetadataConnector

org.apache.druid.metadata.storage.derby.DerbyConnector

All Implemented Interfaces:

MetadataStorageConnector

public class DerbyConnector
extends SQLMetadataConnector

Field Summary

Fields inherited from interface org.apache.druid.metadata.MetadataStorageConnector

CONFIG_TABLE_KEY_COLUMN, CONFIG_TABLE_VALUE_COLUMN

Constructor Summary

Constructors

Constructor and Description
DerbyConnector(MetadataStorage storage, com.google.common.base.Supplier<MetadataStorageConnectorConfig> config, com.google.common.base.Supplier<MetadataStorageTablesConfig> dbTables)
DerbyConnector(MetadataStorage storage, com.google.common.base.Supplier<MetadataStorageConnectorConfig> config, com.google.common.base.Supplier<MetadataStorageTablesConfig> dbTables, org.skife.jdbi.v2.DBI dbi)

Method Summary

Modifier and Type	Method and Description
void	exportTable(String tableName, String outputPath)
org.skife.jdbi.v2.DBI	getDBI()
String	getQuoteString()
String	getSerialType() Auto-incrementing SQL type to use for IDs Must be an integer type, which values will be automatically set by the database The resulting string will be interpolated into the table creation statement, e.g.
int	getStreamingFetchSize() Returns the value that should be passed to statement.setFetchSize to ensure results are streamed back from the database instead of fetching the entire result set in memory.
String	getValidationQuery()
void	start()
void	stop()
boolean	tableExists(org.skife.jdbi.v2.Handle handle, String tableName)

Methods inherited from class org.apache.druid.metadata.SQLMetadataConnector

compareAndSwap, connectorIsTransientException, createAuditTable, createConfigTable, createConfigTable, createDataSourceTable, createDataSourceTable, createEntryTable, createLockTable, createLogTable, createPendingSegmentsTable, createPendingSegmentsTable, createRulesTable, createRulesTable, createSegmentTable, createSegmentTable, createSupervisorsTable, createSupervisorsTable, createTable, createTaskTables, deleteAllRecords, getCollation, getConfig, getDatasource, getPayloadType, inReadOnlyTransaction, insertOrUpdate, isTransientException, lookup, lookupWithHandle, retryTransaction, retryWithHandle, retryWithHandle

Methods inherited from class java.lang.Object

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

Constructor Detail

DerbyConnector

@Inject
public DerbyConnector(MetadataStorage storage,
                              com.google.common.base.Supplier<MetadataStorageConnectorConfig> config,
                              com.google.common.base.Supplier<MetadataStorageTablesConfig> dbTables)

DerbyConnector

public DerbyConnector(MetadataStorage storage,
                      com.google.common.base.Supplier<MetadataStorageConnectorConfig> config,
                      com.google.common.base.Supplier<MetadataStorageTablesConfig> dbTables,
                      org.skife.jdbi.v2.DBI dbi)

Method Detail

tableExists

public boolean tableExists(org.skife.jdbi.v2.Handle handle,
                           String tableName)

Specified by:

tableExists in class SQLMetadataConnector

getSerialType

public String getSerialType()

Description copied from class: SQLMetadataConnector

Auto-incrementing SQL type to use for IDs Must be an integer type, which values will be automatically set by the database

The resulting string will be interpolated into the table creation statement, e.g. CREATE TABLE druid_table ( id NOT NULL, ... )

Specified by:

getSerialType in class SQLMetadataConnector

Returns:

String representing the SQL type and auto-increment statement

getQuoteString

public String getQuoteString()

Specified by:

getQuoteString in class SQLMetadataConnector

Returns:

the string that should be used to quote string fields

getDBI

public org.skife.jdbi.v2.DBI getDBI()

Specified by:

getDBI in class SQLMetadataConnector

getStreamingFetchSize

public int getStreamingFetchSize()

Description copied from class: SQLMetadataConnector

Returns the value that should be passed to statement.setFetchSize to ensure results are streamed back from the database instead of fetching the entire result set in memory.

Specified by:

getStreamingFetchSize in class SQLMetadataConnector

Returns:

optimal fetch size to stream results back

getValidationQuery

public String getValidationQuery()

Overrides:

getValidationQuery in class SQLMetadataConnector

exportTable

public void exportTable(String tableName,
                        String outputPath)

start

public void start()

stop

public void stop()