Package io.squashql.query.database

Class SnowflakeQueryEngine

java.lang.Object

io.squashql.query.database.AQueryEngine<T>

io.squashql.jdbc.JdbcQueryEngine<SnowflakeDatastore>

io.squashql.query.database.SnowflakeQueryEngine

All Implemented Interfaces:

QueryEngine<SnowflakeDatastore>

public class SnowflakeQueryEngine
extends JdbcQueryEngine<SnowflakeDatastore>

Nested Class Summary

Nested classes/interfaces inherited from class io.squashql.jdbc.JdbcQueryEngine

JdbcQueryEngine.ThrowingFunction<T extends Object,R extends Object>

Field Summary

Fields

Modifier and Type	Field	Description
static final List<String>	SUPPORTED_AGGREGATION_FUNCTIONS	https://docs.snowflake.com/en/sql-reference/functions-aggregation.html.

Fields inherited from class io.squashql.query.database.AQueryEngine

datastore

Fields inherited from interface io.squashql.query.database.QueryEngine

GRAND_TOTAL, TOTAL

Constructor Summary

Constructors

Constructor	Description
SnowflakeQueryEngine(SnowflakeDatastore datastore)

Method Summary

Modifier and Type	Method	Description
protected ResultSetReader	createResultSetReader()
static Lists.DoubleList	parseVectorString(String vectorString)	Parses a string representation of a vector and returns a list of doubles.
QueryRewriter	queryRewriter(DatabaseQuery query)
List<String>	supportedAggregationFunctions()
protected BiFunction<ResultSetMetaData,Integer,Class<?>>	typeToClassConverter()

Methods inherited from class io.squashql.jdbc.JdbcQueryEngine

createHeaderList, executeQuery, executeRawSql, getColumnTypes, getTypeValue, retrieveAggregates

Methods inherited from class io.squashql.query.database.AQueryEngine

createSqlStatement, datastore, execute, transformToColumnFormat, transformToRowFormat

Methods inherited from class java.lang.Object

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

Field Details

SUPPORTED_AGGREGATION_FUNCTIONS

public static final List<String> SUPPORTED_AGGREGATION_FUNCTIONS

https://docs.snowflake.com/en/sql-reference/functions-aggregation.html. NOTE there is more but only a subset is proposed here.

Constructor Details

SnowflakeQueryEngine

public SnowflakeQueryEngine(SnowflakeDatastore datastore)

Method Details

typeToClassConverter

protected BiFunction<ResultSetMetaData,Integer,Class<?>> typeToClassConverter()

Specified by:

typeToClassConverter in class JdbcQueryEngine<SnowflakeDatastore>

createResultSetReader

protected ResultSetReader createResultSetReader()

Overrides:

createResultSetReader in class JdbcQueryEngine<SnowflakeDatastore>

parseVectorString

public static Lists.DoubleList parseVectorString(String vectorString)

Parses a string representation of a vector and returns a list of doubles.

Parameters:

vectorString - The string representation of the vector.

Returns:

A list of doubles representing the vector.

supportedAggregationFunctions

public List<String> supportedAggregationFunctions()

queryRewriter

public QueryRewriter queryRewriter(DatabaseQuery query)