ru.yandex.clickhouse.jdbcbridge.impl

Class ConfigDataSource

java.lang.Object

ru.yandex.clickhouse.jdbcbridge.core.ManagedEntity

ru.yandex.clickhouse.jdbcbridge.core.NamedDataSource

ru.yandex.clickhouse.jdbcbridge.impl.ConfigDataSource

All Implemented Interfaces:

Closeable, AutoCloseable

public class ConfigDataSource
extends NamedDataSource

This class defines a new type of datasource, which can be used to retrieve runtime metrics of all other datasources.

Since:

2.0

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
protected static class	ConfigDataSource.ConfigQuery

Field Summary

Fields

Modifier and Type	Field and Description
static String	EXTENSION_NAME

Fields inherited from class ru.yandex.clickhouse.jdbcbridge.core.NamedDataSource

CACHE_STAT_EVICTION_COUNT, CACHE_STAT_EVICTION_WEIGHT, CACHE_STAT_HIT_COUNT, CACHE_STAT_LOAD_FAILURE_COUNT, CACHE_STAT_LOAD_SUCCESS_COUNT, CACHE_STAT_MISS_COUNT, CACHE_STAT_TOTAL_LOAD_TIME, COLUMN_PREFIX, CONF_CACHE, CONF_CLASS, CONF_COLUMNS, CONF_CONVERTER, CONF_DEFAULTS, CONF_DRIVER_URLS, CONF_EXPIRATION, CONF_JDBC_TYPE, CONF_JDBC_URL, CONF_MAPPINGS, CONF_NATIVE_TYPE, CONF_PARAMETERS, CONF_QUERY_TIMEOUT, CONF_SCHEMA, CONF_SEALED, CONF_SIZE, CONF_TIMEZONE, CONF_TO_TYPE, CONF_TYPE, CONF_WRITE_TIMEOUT, converter, DEFAULT_QUOTE_IDENTIFIER, EMPTY_USAGE, USE_CUSTOM_DRIVER_LOADER

Fields inherited from class ru.yandex.clickhouse.jdbcbridge.core.ManagedEntity

aliases, CONF_ALIASES, CONF_ID, createDateTime, digest, id, type

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	ConfigDataSource(Repository<NamedDataSource> dataSourceRepo)

Method Summary

Modifier and Type	Method and Description
String	getType() Get type of the entity.
protected TableDefinition	inferTypes(String schema, String originalQuery, String loadedQuery, QueryParameters params)
static void	initialize(ExtensionManager manager)
protected ConfigDataSource.ConfigQuery	parse(String query)
protected void	writeQueryResult(String schema, String originalQuery, String loadedQuery, QueryParameters params, ColumnDefinition[] requestColumns, ColumnDefinition[] customColumns, DefaultValues defaultValues, ResponseWriter writer)

Methods inherited from class ru.yandex.clickhouse.jdbcbridge.core.NamedDataSource

close, executeMutation, executeQuery, executeQuery, generateColumnName, getCacheUsage, getCreateDateTime, getCustomColumns, getCustomColumnsAsJsonString, getDefaultValues, getDefaultValuesAsJsonString, getDriverClassLoader, getDriverUrls, getParametersAsJsonString, getPoolUsage, getQueryTimeout, getQueryTimeout, getQuoteIdentifier, getResultColumns, getTimeZone, getUsage, getWriteTimeout, getWriteTimeout, isSavedQuery, isSealed, loadSavedQueryAsNeeded, newInstance, newQueryParameters, validate, writeMutationResult, writeMutationResult

Methods inherited from class ru.yandex.clickhouse.jdbcbridge.core.ManagedEntity

getAliases, getCreationDateTime, getId, isDifferentFrom

Methods inherited from class java.lang.Object

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

Field Detail

EXTENSION_NAME

public static final String EXTENSION_NAME

See Also:

Constant Field Values

Constructor Detail

ConfigDataSource

protected ConfigDataSource(Repository<NamedDataSource> dataSourceRepo)

Method Detail

initialize

public static void initialize(ExtensionManager manager)

parse

protected ConfigDataSource.ConfigQuery parse(String query)

writeQueryResult

protected void writeQueryResult(String schema,
                                String originalQuery,
                                String loadedQuery,
                                QueryParameters params,
                                ColumnDefinition[] requestColumns,
                                ColumnDefinition[] customColumns,
                                DefaultValues defaultValues,
                                ResponseWriter writer)

Overrides:

writeQueryResult in class NamedDataSource

getType

public String getType()

Description copied from class: ManagedEntity

Get type of the entity.

Overrides:

getType in class NamedDataSource

Returns:

type of the entity

inferTypes

protected TableDefinition inferTypes(String schema,
                                     String originalQuery,
                                     String loadedQuery,
                                     QueryParameters params)

Overrides:

inferTypes in class NamedDataSource