Package org.apache.calcite.sql

Class SqlMapTypeNameSpec

java.lang.Object

org.apache.calcite.sql.SqlTypeNameSpec

org.apache.calcite.sql.SqlMapTypeNameSpec

public class SqlMapTypeNameSpec
extends SqlTypeNameSpec

Parse SQL MAP type, i.e. MAP<INT NOT NULL, TIMESTAMP NULL>, the key and value can specify a suffix to indicate if the type is nullable, default is not null.

MAP type does not belong to standard SQL.

Constructor Summary

Constructors

Constructor	Description
SqlMapTypeNameSpec(SqlDataTypeSpec keyType, SqlDataTypeSpec valType, SqlParserPos pos)	Creates a SqlMapTypeNameSpec.

Method Summary

Modifier and Type	Method	Description
RelDataType	deriveType(SqlValidator validator)	Derive type from this SqlTypeNameSpec.
boolean	equalsDeep(SqlTypeNameSpec spec, Litmus litmus)	Returns whether this spec is structurally equivalent to another spec.
SqlDataTypeSpec	getKeyType()
SqlDataTypeSpec	getValType()
void	unparse(SqlWriter writer, int leftPrec, int rightPrec)	Writes a SQL representation of this spec to a writer.

Methods inherited from class org.apache.calcite.sql.SqlTypeNameSpec

getParserPos, getTypeName

Methods inherited from class java.lang.Object

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

Constructor Details

SqlMapTypeNameSpec

public SqlMapTypeNameSpec(SqlDataTypeSpec keyType,
 SqlDataTypeSpec valType,
 SqlParserPos pos)

Creates a SqlMapTypeNameSpec.

Parameters:

keyType - key type

valType - value type

pos - the parser position

Method Details

getKeyType

public SqlDataTypeSpec getKeyType()

getValType

public SqlDataTypeSpec getValType()

deriveType

public RelDataType deriveType(SqlValidator validator)

Description copied from class: SqlTypeNameSpec

Derive type from this SqlTypeNameSpec.

Specified by:

deriveType in class SqlTypeNameSpec

Parameters:

validator - The sql validator

Returns:

the RelDataType instance, throws exception if we could not deduce the type

unparse

public void unparse(SqlWriter writer,
 int leftPrec,
 int rightPrec)

Description copied from class: SqlTypeNameSpec

Writes a SQL representation of this spec to a writer.

Specified by:

unparse in class SqlTypeNameSpec

equalsDeep

public boolean equalsDeep(SqlTypeNameSpec spec,
 Litmus litmus)

Description copied from class: SqlTypeNameSpec

Returns whether this spec is structurally equivalent to another spec.

Specified by:

equalsDeep in class SqlTypeNameSpec