org.apache.calcite.rel.type (Apache Calcite API)

Defines a type system for relational expressions.

Interface Summary
Interface	Description
RelDataType	RelDataType represents the type of a scalar expression or entire row returned from a relational expression.
RelDataTypeFactory	RelDataTypeFactory is a factory for datatype descriptors.
RelDataTypeFactory.FieldInfo	Deprecated.
RelDataTypeFamily	RelDataTypeFamily represents a family of related types.
RelDataTypeField	RelDataTypeField represents the definition of a field in a structured `RelDataType`.
RelDataTypePrecedenceList	RelDataTypePrecedenceList defines a type precedence list for a particular type.
RelDataTypeSystem	Type system.
RelProtoDataType	Can be converted into a `RelDataType` given a `RelDataTypeFactory`.

Class Summary
Class	Description
DelegatingTypeSystem	Implementation of `RelDataTypeSystem` that sends all methods to an underlying object.
DynamicRecordType	Specific type of RelRecordType that corresponds to a dynamic table, where columns are created as they are requested.
DynamicRecordTypeImpl	Implementation of `RelDataType` for a dynamic table.
RelCrossType	Type of the cartesian product of two or more sets of records.
RelDataTypeFactory.Builder	Fluid API to build a list of fields.
RelDataTypeFactory.FieldInfoBuilder	Deprecated.
RelDataTypeFactoryImpl	Abstract base for implementations of `RelDataTypeFactory`.
RelDataTypeFactoryImpl.Key	Key to the data type cache.
RelDataTypeField.ToFieldIndex	Deprecated. Use `RelDataTypeField::getIndex`
RelDataTypeField.ToFieldName	Deprecated. Use `RelDataTypeField::getName`
RelDataTypeFieldImpl	Default implementation of `RelDataTypeField`.
RelDataTypeHolder	Holding the expandable list of fields for dynamic table.
RelDataTypeImpl	RelDataTypeImpl is an abstract base for implementations of `RelDataType`.
RelDataTypeImpl.Slot	Work space for `RelDataTypeImpl.getFieldRecurse(java.util.List<org.apache.calcite.rel.type.RelDataTypeImpl.Slot>, org.apache.calcite.rel.type.RelDataType, int, java.lang.String, boolean)`.
RelDataTypeSystemImpl	Default implementation of `RelDataTypeSystem`, providing parameters from the SQL standard.
RelRecordType	RelRecordType represents a structured type having named fields.
RelRecordType.SerializableRelRecordType	Skinny object which has the same information content as a `RelRecordType` but skips redundant stuff like digest and the immutable list.

Enum Summary
Enum	Description
RelDataTypeComparability	RelDataTypeComparability is an enumeration of the categories of comparison operators which types may support.
StructKind	Describes a policy for resolving fields in record types.