Package io.trino.plugin.clickhouse

Class ClickHouseClient

java.lang.Object

io.trino.plugin.jdbc.BaseJdbcClient

io.trino.plugin.clickhouse.ClickHouseClient

All Implemented Interfaces:

JdbcClient

public class ClickHouseClient
extends BaseJdbcClient

Nested Class Summary

Nested classes/interfaces inherited from class io.trino.plugin.jdbc.BaseJdbcClient

BaseJdbcClient.TopNFunction

Field Summary

Fields

Modifier and Type	Field	Description
static final int	DEFAULT_DOMAIN_COMPACTION_THRESHOLD

Fields inherited from class io.trino.plugin.jdbc.BaseJdbcClient

connectionFactory, identifierQuote, jdbcTypesMappedToVarchar, queryBuilder, queryModifier

Constructor Summary

Constructors

Constructor	Description
ClickHouseClient(BaseJdbcConfig config, ConnectionFactory connectionFactory, QueryBuilder queryBuilder, TypeManager typeManager, IdentifierMapping identifierMapping, RemoteQueryModifier queryModifier)

Method Summary

Modifier and Type	Method	Description
void	addColumn(ConnectorSession session, JdbcTableHandle handle, ColumnMetadata column)
protected void	copyTableSchema(ConnectorSession session, Connection connection, String catalogName, String schemaName, String tableName, String newTableName, List<String> columnNames)
protected void	createSchema(ConnectorSession session, Connection connection, String remoteSchemaName)
protected String	createTableSql(RemoteTableName remoteTableName, List<String> columns, ConnectorTableMetadata tableMetadata)
OptionalLong	delete(ConnectorSession session, JdbcTableHandle handle)
protected void	dropSchema(ConnectorSession session, Connection connection, String remoteSchemaName, boolean cascade)
protected String	getColumnDefinitionSql(ConnectorSession session, ColumnMetadata column, String columnName)
Optional<String>	getTableComment(ResultSet resultSet)
Map<String,Object>	getTableProperties(ConnectorSession session, JdbcTableHandle tableHandle)
protected Optional<List<String>>	getTableTypes()
Optional<JdbcExpression>	implementAggregation(ConnectorSession session, AggregateFunction aggregate, Map<String,ColumnHandle> assignments)
boolean	isLimitGuaranteed(ConnectorSession session)
protected Optional<BiFunction<String,Long,String>>	limitFunction()
protected String	quoted(String catalog, String schema, String table)
protected void	renameSchema(ConnectorSession session, Connection connection, String remoteSchemaName, String newRemoteSchemaName)
protected void	renameTable(ConnectorSession session, Connection connection, String catalogName, String remoteSchemaName, String remoteTableName, String newRemoteSchemaName, String newRemoteTableName)
void	setColumnComment(ConnectorSession session, JdbcTableHandle handle, JdbcColumnHandle column, Optional<String> comment)
void	setColumnType(ConnectorSession session, JdbcTableHandle handle, JdbcColumnHandle column, Type type)
void	setTableComment(ConnectorSession session, JdbcTableHandle handle, Optional<String> comment)
void	setTableProperties(ConnectorSession session, JdbcTableHandle handle, Map<String,Optional<Object>> nullableProperties)
boolean	supportsAggregationPushdown(ConnectorSession session, JdbcTableHandle table, List<AggregateFunction> aggregates, Map<String,ColumnHandle> assignments, List<List<ColumnHandle>> groupingSets)
Optional<ColumnMapping>	toColumnMapping(ConnectorSession session, Connection connection, JdbcTypeHandle typeHandle)
WriteMapping	toWriteMapping(ConnectorSession session, Type type)

Methods inherited from class io.trino.plugin.jdbc.BaseJdbcClient

addColumn, applyQueryTransformations, beginCreateTable, beginInsertTable, buildInsertSql, buildProcedure, buildSql, commitCreateTable, createSchema, createTable, createTable, createTable, createTableSqls, dropColumn, dropSchema, dropTable, dropTable, escapeObjectNameForMetadataQuery, escapeObjectNameForMetadataQuery, execute, execute, filterSchema, finishInsertTable, getAdditionalPredicate, getCaseSensitivityForColumns, getColumns, getColumns, getColumns, getConnection, getConnection, getConnection, getForcedMappingToVarchar, getIdentifierMapping, getInteger, getMaxWriteParallelism, getPreparedStatement, getProcedureHandle, getRemoteIdentifiers, getSchemaNames, getSplits, getSplits, getTableHandle, getTableHandle, getTableNames, getTables, getTableSchemaName, getTableStatistics, implementJoin, isSupportedJoinCondition, isTopNGuaranteed, listSchemas, mapToUnboundedVarchar, postProcessInsertTableNameClause, prepareQuery, prepareQuery, preventTextualTypeAggregationPushdown, quoted, quoted, renameColumn, renameColumn, renameSchema, renameTable, renameTable, rollbackCreateTable, supportsLimit, supportsRetries, supportsTopN, toColumnMappings, topNFunction, truncateTable, varcharLiteral, verifyColumnName, verifySchemaName, verifyTableName

Methods inherited from class java.lang.Object

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

Methods inherited from interface io.trino.plugin.jdbc.JdbcClient

abortReadConnection, convertPredicate, getSupportedType, getSystemTable, getTableScanRedirection, getTableStatistics, schemaExists

Field Details

DEFAULT_DOMAIN_COMPACTION_THRESHOLD

public static final int DEFAULT_DOMAIN_COMPACTION_THRESHOLD

See Also:

• Constant Field Values

Constructor Details

ClickHouseClient

@Inject
public ClickHouseClient(BaseJdbcConfig config,
 ConnectionFactory connectionFactory,
 QueryBuilder queryBuilder,
 TypeManager typeManager,
 IdentifierMapping identifierMapping,
 RemoteQueryModifier queryModifier)

Method Details

implementAggregation

public Optional<JdbcExpression> implementAggregation(ConnectorSession session,
 AggregateFunction aggregate,
 Map<String,ColumnHandle> assignments)

supportsAggregationPushdown

public boolean supportsAggregationPushdown(ConnectorSession session,
 JdbcTableHandle table,
 List<AggregateFunction> aggregates,
 Map<String,ColumnHandle> assignments,
 List<List<ColumnHandle>> groupingSets)

quoted

protected String quoted(@Nullable
 String catalog,
 @Nullable
 String schema,
 String table)

Overrides:

quoted in class BaseJdbcClient

copyTableSchema

protected void copyTableSchema(ConnectorSession session,
 Connection connection,
 String catalogName,
 String schemaName,
 String tableName,
 String newTableName,
 List<String> columnNames)

Overrides:

copyTableSchema in class BaseJdbcClient

getTableComment

public Optional<String> getTableComment(ResultSet resultSet)
                                 throws SQLException

Throws:

SQLException

createTableSql

protected String createTableSql(RemoteTableName remoteTableName,
 List<String> columns,
 ConnectorTableMetadata tableMetadata)

Overrides:

createTableSql in class BaseJdbcClient

getTableProperties

public Map<String,Object> getTableProperties(ConnectorSession session,
 JdbcTableHandle tableHandle)

Specified by:

getTableProperties in interface JdbcClient

Overrides:

getTableProperties in class BaseJdbcClient

setTableProperties

public void setTableProperties(ConnectorSession session,
 JdbcTableHandle handle,
 Map<String,Optional<Object>> nullableProperties)

getColumnDefinitionSql

protected String getColumnDefinitionSql(ConnectorSession session,
 ColumnMetadata column,
 String columnName)

Overrides:

getColumnDefinitionSql in class BaseJdbcClient

createSchema

protected void createSchema(ConnectorSession session,
 Connection connection,
 String remoteSchemaName)
                     throws SQLException

Overrides:

createSchema in class BaseJdbcClient

Throws:

SQLException

dropSchema

protected void dropSchema(ConnectorSession session,
 Connection connection,
 String remoteSchemaName,
 boolean cascade)
                   throws SQLException

Overrides:

dropSchema in class BaseJdbcClient

Throws:

SQLException

renameSchema

protected void renameSchema(ConnectorSession session,
 Connection connection,
 String remoteSchemaName,
 String newRemoteSchemaName)
                     throws SQLException

Overrides:

renameSchema in class BaseJdbcClient

Throws:

SQLException

addColumn

public void addColumn(ConnectorSession session,
 JdbcTableHandle handle,
 ColumnMetadata column)

Specified by:

addColumn in interface JdbcClient

Overrides:

addColumn in class BaseJdbcClient

setTableComment

public void setTableComment(ConnectorSession session,
 JdbcTableHandle handle,
 Optional<String> comment)

setColumnComment

public void setColumnComment(ConnectorSession session,
 JdbcTableHandle handle,
 JdbcColumnHandle column,
 Optional<String> comment)

setColumnType

public void setColumnType(ConnectorSession session,
 JdbcTableHandle handle,
 JdbcColumnHandle column,
 Type type)

Specified by:

setColumnType in interface JdbcClient

Overrides:

setColumnType in class BaseJdbcClient

getTableTypes

protected Optional<List<String>> getTableTypes()

Overrides:

getTableTypes in class BaseJdbcClient

renameTable

protected void renameTable(ConnectorSession session,
 Connection connection,
 String catalogName,
 String remoteSchemaName,
 String remoteTableName,
 String newRemoteSchemaName,
 String newRemoteTableName)
                    throws SQLException

Overrides:

renameTable in class BaseJdbcClient

Throws:

SQLException

limitFunction

protected Optional<BiFunction<String,Long,String>> limitFunction()

Overrides:

limitFunction in class BaseJdbcClient

isLimitGuaranteed

public boolean isLimitGuaranteed(ConnectorSession session)

Specified by:

isLimitGuaranteed in interface JdbcClient

Overrides:

isLimitGuaranteed in class BaseJdbcClient

delete

public OptionalLong delete(ConnectorSession session,
 JdbcTableHandle handle)

Specified by:

delete in interface JdbcClient

Overrides:

delete in class BaseJdbcClient

toColumnMapping

public Optional<ColumnMapping> toColumnMapping(ConnectorSession session,
 Connection connection,
 JdbcTypeHandle typeHandle)

toWriteMapping

public WriteMapping toWriteMapping(ConnectorSession session,
 Type type)