org.apache.calcite.sql

Class SqlBasicTypeNameSpec

java.lang.Object

org.apache.calcite.sql.SqlTypeNameSpec

org.apache.calcite.sql.SqlBasicTypeNameSpec

Direct Known Subclasses:

SqlAlienSystemTypeNameSpec

public class SqlBasicTypeNameSpec
extends SqlTypeNameSpec

A sql type name specification of basic sql type.

Supported basic sql types grammar:

   basicSqlType:
         GEOMETRY
     |   BOOLEAN
     |   [ INTEGER | INT ]
     |   TINYINT
     |   SMALLINT
     |   BIGINT
     |   REAL
     |   DOUBLE [ PRECISION ]
     |   FLOAT
     |   BINARY [ precision ]
     |   [ BINARY VARYING | VARBINARY ] [ precision ]
     |   [ DECIMAL | DEC | NUMERIC ] [ precision [, scale] ]
     |   ANY [ precision [, scale] ]
     |   charType [ precision ] [ charSet ]
     |   varcharType [ precision ] [ charSet ]
     |   DATE
     |   TIME [ precision ] [ timeZone ]
     |   TIMESTAMP [ precision ] [ timeZone ]

  charType:
         CHARACTER
     |   CHAR

  varcharType:
         charType VARYING
     |   VARCHAR

  charSet:
         CHARACTER SET charSetName

  timeZone:
         WITHOUT TIME ZONE
     |   WITH LOCAL TIME ZONE
 

Constructor Summary

Constructors

Constructor and Description
SqlBasicTypeNameSpec(SqlTypeName typeName, int precision, int scale, SqlParserPos pos)
SqlBasicTypeNameSpec(SqlTypeName typeName, int precision, int scale, @Nullable String charSetName, SqlParserPos pos) Create a basic sql type name specification.
SqlBasicTypeNameSpec(SqlTypeName typeName, int precision, SqlParserPos pos)
SqlBasicTypeNameSpec(SqlTypeName typeName, int precision, String charSetName, SqlParserPos pos)
SqlBasicTypeNameSpec(SqlTypeName typeName, SqlParserPos pos)

Method Summary

Modifier and Type	Method and Description
RelDataType	deriveType(SqlValidator validator) Derive type from this SqlTypeNameSpec.
boolean	equalsDeep(SqlTypeNameSpec node, Litmus litmus) Returns whether this spec is structurally equivalent to another spec.
@Nullable String	getCharSetName()
int	getPrecision()
int	getScale()
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 Detail

SqlBasicTypeNameSpec

public SqlBasicTypeNameSpec(SqlTypeName typeName,
                            int precision,
                            int scale,
                            @Nullable String charSetName,
                            SqlParserPos pos)

Create a basic sql type name specification.

Parameters:

typeName - Type name

precision - Precision of the type name if it is allowed, default is -1

scale - Scale of the type name if it is allowed, default is -1

charSetName - Char set of the type, only works when the type belong to CHARACTER type family

pos - The parser position

SqlBasicTypeNameSpec

public SqlBasicTypeNameSpec(SqlTypeName typeName,
                            SqlParserPos pos)

SqlBasicTypeNameSpec

public SqlBasicTypeNameSpec(SqlTypeName typeName,
                            int precision,
                            SqlParserPos pos)

SqlBasicTypeNameSpec

public SqlBasicTypeNameSpec(SqlTypeName typeName,
                            int precision,
                            String charSetName,
                            SqlParserPos pos)

SqlBasicTypeNameSpec

public SqlBasicTypeNameSpec(SqlTypeName typeName,
                            int precision,
                            int scale,
                            SqlParserPos pos)

Method Detail

getScale

public int getScale()

getPrecision

public int getPrecision()

getCharSetName

public @Nullable String getCharSetName()

equalsDeep

public boolean equalsDeep(SqlTypeNameSpec node,
                          Litmus litmus)

Description copied from class: SqlTypeNameSpec

Returns whether this spec is structurally equivalent to another spec.

Specified by:

equalsDeep in class SqlTypeNameSpec

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

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