io.hetu.core.plugin.datacenter

Class DataCenterMetadata

java.lang.Object

io.hetu.core.plugin.datacenter.DataCenterMetadata

All Implemented Interfaces:

ConnectorMetadata

public class DataCenterMetadata
extends Object
implements ConnectorMetadata

Data center metadata, use DataCenterClient to get the metadata.

Since:

2020-02-11

Constructor Summary

Constructors

Constructor and Description
DataCenterMetadata(DataCenterClient dataCenterClient, DataCenterConfig dataCenterConfig) Constructor of data center metadata.

Method Summary

Modifier and Type	Method and Description
Optional<LimitApplicationResult<ConnectorTableHandle>>	applyLimit(ConnectorSession session, ConnectorTableHandle table, long limit)
Optional<SubQueryApplicationResult<ConnectorTableHandle>>	applySubQuery(ConnectorSession session, ConnectorTableHandle handle, String subQuery, Map<String,Type> types)
Map<String,ColumnHandle>	getColumnHandles(ConnectorSession session, ConnectorTableHandle tableHandle)
ColumnMetadata	getColumnMetadata(ConnectorSession session, ConnectorTableHandle tableHandle, ColumnHandle columnHandle)
Optional<SqlQueryWriter>	getSqlQueryWriter()
DataCenterTableHandle	getTableHandle(ConnectorSession session, SchemaTableName tableName)
ConnectorTableMetadata	getTableMetadata(ConnectorSession session, ConnectorTableHandle tableHandle)
ConnectorTableProperties	getTableProperties(ConnectorSession session, ConnectorTableHandle table)
TableStatistics	getTableStatistics(ConnectorSession session, ConnectorTableHandle tableHandle, Constraint constraint)
boolean	isExecutionPlanCacheSupported(ConnectorSession session, ConnectorTableHandle handle)
List<String>	listSchemaNames(ConnectorSession session)
Map<SchemaTableName,List<ColumnMetadata>>	listTableColumns(ConnectorSession session, SchemaTablePrefix prefix)
List<SchemaTableName>	listTables(ConnectorSession session, Optional<String> optionalSchemaName)
boolean	usesLegacyTableLayouts()

Methods inherited from class java.lang.Object

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

Methods inherited from interface io.prestosql.spi.connector.ConnectorMetadata

addColumn, applyDelete, applyFilter, applyFilter, applyProjection, applySample, beginCreateTable, beginDelete, beginDeletesAsInsert, beginInsert, beginInsert, beginQuery, beginStatisticsCollection, beginUpdate, beginVacuum, cleanupQuery, createRole, createSchema, createTable, createView, dropColumn, dropRole, dropSchema, dropTable, dropView, executeDelete, finishCreateTable, finishDelete, finishDeleteAsInsert, finishInsert, finishStatisticsCollection, finishUpdate, finishVacuum, getCommonPartitioningHandle, getInfo, getInfo, getInsertLayout, getNewTableLayout, getStatisticsCollectionMetadata, getStatisticsCollectionMetadataForWrite, getSystemTable, getTableHandleForStatisticsCollection, getTableLayout, getTableLayouts, getTablesForVacuum, getUpdateLayout, getUpdateRowIdColumnHandle, getView, getViews, grantRoles, grantTablePrivileges, listApplicableRoles, listEnabledRoles, listRoleGrants, listRoles, listTablePrivileges, listViews, makeCompatiblePartitioning, makeCompatiblePartitioning, metadataDelete, renameColumn, renameSchema, renameTable, resolveIndex, revokeRoles, revokeTablePrivileges, schemaExists, setTableComment, supportsMetadataDelete

Constructor Detail

DataCenterMetadata

public DataCenterMetadata(DataCenterClient dataCenterClient,
                          DataCenterConfig dataCenterConfig)

Constructor of data center metadata.

Parameters:

dataCenterClient - data center client.

dataCenterConfig - data center config.

Method Detail

listSchemaNames

public List<String> listSchemaNames(ConnectorSession session)

Specified by:

listSchemaNames in interface ConnectorMetadata

getTableHandle

public DataCenterTableHandle getTableHandle(ConnectorSession session,
                                            SchemaTableName tableName)

Specified by:

getTableHandle in interface ConnectorMetadata

getTableMetadata

public ConnectorTableMetadata getTableMetadata(ConnectorSession session,
                                               ConnectorTableHandle tableHandle)

Specified by:

getTableMetadata in interface ConnectorMetadata

listTables

public List<SchemaTableName> listTables(ConnectorSession session,
                                        Optional<String> optionalSchemaName)

Specified by:

listTables in interface ConnectorMetadata

getColumnHandles

public Map<String,ColumnHandle> getColumnHandles(ConnectorSession session,
                                                 ConnectorTableHandle tableHandle)

Specified by:

getColumnHandles in interface ConnectorMetadata

listTableColumns

public Map<SchemaTableName,List<ColumnMetadata>> listTableColumns(ConnectorSession session,
                                                                  SchemaTablePrefix prefix)

Specified by:

listTableColumns in interface ConnectorMetadata

getColumnMetadata

public ColumnMetadata getColumnMetadata(ConnectorSession session,
                                        ConnectorTableHandle tableHandle,
                                        ColumnHandle columnHandle)

Specified by:

getColumnMetadata in interface ConnectorMetadata

usesLegacyTableLayouts

public boolean usesLegacyTableLayouts()

Specified by:

usesLegacyTableLayouts in interface ConnectorMetadata

getTableProperties

public ConnectorTableProperties getTableProperties(ConnectorSession session,
                                                   ConnectorTableHandle table)

Specified by:

getTableProperties in interface ConnectorMetadata

applyLimit

public Optional<LimitApplicationResult<ConnectorTableHandle>> applyLimit(ConnectorSession session,
                                                                         ConnectorTableHandle table,
                                                                         long limit)

Specified by:

applyLimit in interface ConnectorMetadata

applySubQuery

public Optional<SubQueryApplicationResult<ConnectorTableHandle>> applySubQuery(ConnectorSession session,
                                                                               ConnectorTableHandle handle,
                                                                               String subQuery,
                                                                               Map<String,Type> types)

Specified by:

applySubQuery in interface ConnectorMetadata

getSqlQueryWriter

public Optional<SqlQueryWriter> getSqlQueryWriter()

Specified by:

getSqlQueryWriter in interface ConnectorMetadata

getTableStatistics

public TableStatistics getTableStatistics(ConnectorSession session,
                                          ConnectorTableHandle tableHandle,
                                          Constraint constraint)

Specified by:

getTableStatistics in interface ConnectorMetadata

isExecutionPlanCacheSupported

public boolean isExecutionPlanCacheSupported(ConnectorSession session,
                                             ConnectorTableHandle handle)

Specified by:

isExecutionPlanCacheSupported in interface ConnectorMetadata