Package org.apache.drill.exec.store.hive.schema

Class HiveDatabaseSchema

java.lang.Object

org.apache.drill.exec.store.AbstractSchema

org.apache.drill.exec.store.hive.schema.HiveDatabaseSchema

All Implemented Interfaces:

AutoCloseable, org.apache.calcite.schema.Schema, SchemaPartitionExplorer

public class HiveDatabaseSchema
extends AbstractSchema

Nested Class Summary

Nested classes/interfaces inherited from interface org.apache.calcite.schema.Schema

org.apache.calcite.schema.Schema.TableType

Field Summary

Fields inherited from class org.apache.drill.exec.store.AbstractSchema

name, SCHEMA_SEPARATOR, schemaPath

Constructor Summary

Constructors

Constructor	Description
HiveDatabaseSchema(org.apache.drill.exec.store.hive.schema.HiveSchemaFactory.HiveSchema hiveSchema, String name, DrillHiveMetaStoreClient mClient, SchemaConfig schemaConfig)

Method Summary

Modifier and Type	Method	Description
boolean	areTableNamesCaseSensitive()	Indicates if table names in schema are case sensitive.
org.apache.calcite.schema.Table	getTable(String tableName)
Set<String>	getTableNames()
Collection<Map.Entry<String,org.apache.calcite.schema.Schema.TableType>>	getTableNamesAndTypes()	Used by InfoSchemaRecordGenerator.Tables for getting all table objects along with type for every requested schema.
String	getTypeName()	Returns string describing schema type which shows where the schema came from.

Methods inherited from class org.apache.drill.exec.store.AbstractSchema

appendToStatsTable, applyFunctionParameters, close, createNewTable, createNewTable, createStatsTable, createView, dropTable, dropView, getDefaultSchema, getExpression, getFullSchemaName, getFunctionNames, getFunctionParameters, getFunctions, getName, getSchemaPath, getStatsTable, getSubPartitions, getSubSchema, getSubSchemaNames, getTablesByNames, getType, getTypeMap, getTypeNames, getUser, isMutable, modifyTable, needToImpersonateReadingData, showInInformationSchema, snapshot, toString

Methods inherited from class java.lang.Object

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

Constructor Details

HiveDatabaseSchema

public HiveDatabaseSchema(org.apache.drill.exec.store.hive.schema.HiveSchemaFactory.HiveSchema hiveSchema,
 String name,
 DrillHiveMetaStoreClient mClient,
 SchemaConfig schemaConfig)

Method Details

getTable

public org.apache.calcite.schema.Table getTable(String tableName)

Specified by:

getTable in interface org.apache.calcite.schema.Schema

Overrides:

getTable in class AbstractSchema

getTableNamesAndTypes

public Collection<Map.Entry<String,org.apache.calcite.schema.Schema.TableType>> getTableNamesAndTypes()

Description copied from class: AbstractSchema

Used by InfoSchemaRecordGenerator.Tables for getting all table objects along with type for every requested schema. It's desired for this method to work fast because it impacts SHOW TABLES query.

Overrides:

getTableNamesAndTypes in class AbstractSchema

Returns:

collection of table names and types

getTableNames

public Set<String> getTableNames()

Specified by:

getTableNames in interface org.apache.calcite.schema.Schema

Overrides:

getTableNames in class AbstractSchema

getTypeName

public String getTypeName()

Description copied from class: AbstractSchema

Returns string describing schema type which shows where the schema came from. Good practice here is to return json type name of storage plugin's config.

Specified by:

getTypeName in class AbstractSchema

Returns:

schema type name

areTableNamesCaseSensitive

public boolean areTableNamesCaseSensitive()

Description copied from class: AbstractSchema

Indicates if table names in schema are case sensitive. By default they are. If schema implementation claims its table names are case insensitive, it is responsible for making case insensitive look up by table name.

Overrides:

areTableNamesCaseSensitive in class AbstractSchema

Returns:

true if table names are case sensitive