org.apache.calcite.rel.type

Interface RelDataTypeSystem

All Known Implementing Classes:

RelDataTypeSystemImpl

public interface RelDataTypeSystem

Type system.

Provides behaviors concerning type limits and behaviors. For example, in the default system, a DECIMAL can have maximum precision 19, but Hive overrides to 38.

The default implementation is DEFAULT.

Field Summary

Fields

Modifier and Type	Field and Description
static RelDataTypeSystem	DEFAULT Default type system.

Method Summary

Methods

Modifier and Type	Method and Description
int	getDefaultPrecision(SqlTypeName typeName) Returns default precision for this type if supported, otherwise -1 if precision is either unsupported or must be specified explicitly.
int	getMaxNumericPrecision() Returns the maximum precision of a NUMERIC or DECIMAL type.
int	getMaxNumericScale() Returns the maximum scale of a NUMERIC or DECIMAL type.
int	getMaxPrecision(SqlTypeName typeName) Returns the maximum precision (or length) allowed for this type, or -1 if precision/length are not applicable for this type.
int	getMaxScale(SqlTypeName typeName) Returns the maximum scale of a given type.

Field Detail

DEFAULT

static final RelDataTypeSystem DEFAULT

Default type system.

Method Detail

getMaxScale

int getMaxScale(SqlTypeName typeName)

Returns the maximum scale of a given type.

getDefaultPrecision

int getDefaultPrecision(SqlTypeName typeName)

Returns default precision for this type if supported, otherwise -1 if precision is either unsupported or must be specified explicitly.

Returns:

Default precision

getMaxPrecision

int getMaxPrecision(SqlTypeName typeName)

Returns the maximum precision (or length) allowed for this type, or -1 if precision/length are not applicable for this type.

Returns:

Maximum allowed precision

getMaxNumericScale

int getMaxNumericScale()

Returns the maximum scale of a NUMERIC or DECIMAL type.

getMaxNumericPrecision

int getMaxNumericPrecision()

Returns the maximum precision of a NUMERIC or DECIMAL type.