Package tech.ydb.yoj.repository.ydb.statement

Class FindYqlStatement<PARAMS,ENTITY extends tech.ydb.yoj.repository.db.Entity<ENTITY>,RESULT>

java.lang.Object

tech.ydb.yoj.repository.ydb.statement.YqlStatement<PARAMS,ENTITY,RESULT>

tech.ydb.yoj.repository.ydb.statement.FindYqlStatement<PARAMS,ENTITY,RESULT>

All Implemented Interfaces:

Statement<PARAMS,RESULT>

public class FindYqlStatement<PARAMS,ENTITY extends tech.ydb.yoj.repository.db.Entity<ENTITY>,RESULT>
extends YqlStatement<PARAMS,ENTITY,RESULT>

Nested Class Summary

Nested classes/interfaces inherited from interface tech.ydb.yoj.repository.ydb.statement.Statement

Statement.QueryType

Field Summary

Fields inherited from class tech.ydb.yoj.repository.ydb.statement.YqlStatement

itemsCollector, ORDER_BY_ID_ASCENDING, resultSchema, resultSetReader, schema, tableDescriptor

Constructor Summary

Constructors

Constructor	Description
FindYqlStatement(tech.ydb.yoj.repository.db.TableDescriptor<ENTITY> tableDescriptor, tech.ydb.yoj.repository.db.EntitySchema<ENTITY> schema, Schema<RESULT> resultSchema)

Method Summary

Modifier and Type	Method	Description
List<YqlStatementParam>	getParams()
String	getQuery(String tablespace)	Returns parameterized YQL for this query.
Statement.QueryType	getQueryType()	Returns query type (for query merging purposes).
List<RESULT>	readFromCache(PARAMS params, tech.ydb.yoj.repository.db.cache.RepositoryCache cache)	Tries to read the query result from first-level cache.
void	storeToCache(PARAMS params, List<RESULT> result, tech.ydb.yoj.repository.db.cache.RepositoryCache cache)	Writes the query result to first-level cache.
String	toDebugString(PARAMS params)	Returns debug representation of this query with the specified parameter values.

Methods inherited from class tech.ydb.yoj.repository.ydb.statement.YqlStatement

createTQueryParameter, declarations, equals, escape, getDeclaration, getInSchemaType, getYqlType, getYqlValue, hashCode, isPreparable, mergeParts, mergeParts, nameEqVars, outNames, readResult, resolveParamNames, table, toQueryParameters, toString

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Details

FindYqlStatement

public FindYqlStatement(tech.ydb.yoj.repository.db.TableDescriptor<ENTITY> tableDescriptor,
 tech.ydb.yoj.repository.db.EntitySchema<ENTITY> schema,
 Schema<RESULT> resultSchema)

Method Details

getParams

public List<YqlStatementParam> getParams()

Overrides:

getParams in class YqlStatement<PARAMS,ENTITY extends tech.ydb.yoj.repository.db.Entity<ENTITY>,RESULT>

getQuery

public String getQuery(String tablespace)

Description copied from interface: Statement

Returns parameterized YQL for this query.

Parameters:

tablespace - base path for all tables referenced in the query

Returns:

YQL

readFromCache

public List<RESULT> readFromCache(PARAMS params,
 tech.ydb.yoj.repository.db.cache.RepositoryCache cache)

Description copied from interface: Statement

Tries to read the query result from first-level cache.

Parameters:

params - parameter values. Might be null depending on the statement type, e.g. for DELETE statements.

cache - first-level cache

Returns:

query result, if present in first-level cache; null otherwise

storeToCache

public void storeToCache(PARAMS params,
 List<RESULT> result,
 tech.ydb.yoj.repository.db.cache.RepositoryCache cache)

Description copied from interface: Statement

Writes the query result to first-level cache.

Specified by:

storeToCache in interface Statement<PARAMS,ENTITY extends tech.ydb.yoj.repository.db.Entity<ENTITY>>

Overrides:

storeToCache in class YqlStatement<PARAMS,ENTITY extends tech.ydb.yoj.repository.db.Entity<ENTITY>,RESULT>

Parameters:

params - parameter values Might be null depending on the statement type, e.g. for DELETE statements.

result - result to save; if null, nothing will be saved to cache

cache - first-level cache

getQueryType

public Statement.QueryType getQueryType()

Description copied from interface: Statement

Returns query type (for query merging purposes).

Returns:

query type

toDebugString

public String toDebugString(PARAMS params)

Description copied from interface: Statement

Returns debug representation of this query with the specified parameter values.

Parameters:

params - parameter values. Might be null depending on the statement type, e.g. for DELETE statements.

Returns:

debug representation of the query parameterized with params