Package org.apache.calcite.sql.type

Class AbstractSqlType

java.lang.Object

org.apache.calcite.rel.type.RelDataTypeImpl

org.apache.calcite.sql.type.AbstractSqlType

All Implemented Interfaces:

Serializable, Cloneable, RelDataType, RelDataTypeFamily

Direct Known Subclasses:

ArraySqlType, BasicSqlType, IntervalSqlType, MapSqlType, MeasureSqlType, MultisetSqlType, ObjectSqlType

public abstract class AbstractSqlType
extends RelDataTypeImpl
implements Cloneable, Serializable

Abstract base class for SQL implementations of RelDataType.

See Also:

• Serialized Form

Field Summary

Fields

Modifier and Type	Field	Description
protected boolean	isNullable
protected final SqlTypeName	typeName

Fields inherited from class org.apache.calcite.rel.type.RelDataTypeImpl

digest, fieldList, NON_NULLABLE_SUFFIX

Fields inherited from interface org.apache.calcite.rel.type.RelDataType

PRECISION_NOT_SPECIFIED, SCALE_NOT_SPECIFIED

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	AbstractSqlType(SqlTypeName typeName, boolean isNullable, @Nullable List<? extends RelDataTypeField> fields)	Creates an AbstractSqlType.

Method Summary

Modifier and Type	Method	Description
RelDataTypeFamily	getFamily()	Gets a canonical object representing the family of this type.
RelDataTypePrecedenceList	getPrecedenceList()	Returns the precedence list for this type.
SqlTypeName	getSqlTypeName()	Gets the SqlTypeName of this type.
boolean	isNullable()	Queries whether this type allows null values.

Methods inherited from class org.apache.calcite.rel.type.RelDataTypeImpl

computeDigest, equals, extra, generateTypeString, getCharset, getCollation, getComparability, getComponentType, getField, getFieldCount, getFieldList, getFieldMap, getFieldNames, getFullTypeString, getIntervalQualifier, getKeyType, getPrecision, getScale, getSqlIdentifier, getStructKind, getValueType, hashCode, isDynamicStruct, isStruct, proto, proto, proto, proto, toString

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.calcite.rel.type.RelDataType

equalsSansFieldNames, getMeasureElementType

Field Details

typeName

protected final SqlTypeName typeName

isNullable

protected boolean isNullable

Constructor Details

AbstractSqlType

protected AbstractSqlType(SqlTypeName typeName,
 boolean isNullable,
 @Nullable List<? extends RelDataTypeField> fields)

Creates an AbstractSqlType.

Parameters:

typeName - Type name

isNullable - Whether nullable

fields - Fields of type, or null if not a record type

Method Details

getSqlTypeName

public SqlTypeName getSqlTypeName()

Description copied from class: RelDataTypeImpl

Gets the SqlTypeName of this type. Sub-classes must override the method to ensure the resulting value is non-nullable.

Specified by:

getSqlTypeName in interface RelDataType

Overrides:

getSqlTypeName in class RelDataTypeImpl

Returns:

SqlTypeName, never null

isNullable

public boolean isNullable()

Description copied from interface: RelDataType

Queries whether this type allows null values.

Specified by:

isNullable in interface RelDataType

Overrides:

isNullable in class RelDataTypeImpl

Returns:

whether type allows null values

getFamily

public RelDataTypeFamily getFamily()

Description copied from interface: RelDataType

Gets a canonical object representing the family of this type. Two values can be compared if and only if their types are in the same family.

Specified by:

getFamily in interface RelDataType

Overrides:

getFamily in class RelDataTypeImpl

Returns:

canonical object representing type family, never null

getPrecedenceList

public RelDataTypePrecedenceList getPrecedenceList()

Description copied from interface: RelDataType

Returns the precedence list for this type.

Specified by:

getPrecedenceList in interface RelDataType

Overrides:

getPrecedenceList in class RelDataTypeImpl