Package org.eigenbase.reltype

Defines a type system for relational expressions.

See:
Description

Interface Summary

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	Callback which provides enough information to create fields.
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.

Class Summary

RelCrossType	Type of the cartesian product of two or more sets of records.
RelDataTypeFactory.ListFieldInfo	Simple implementation of RelDataTypeFactory.FieldInfo, based on a list of fields.
RelDataTypeFactoryImpl	Abstract base for implementations of RelDataTypeFactory.
RelDataTypeFieldImpl	Default implementation of RelDataTypeField.
RelDataTypeImpl	RelDataTypeImpl is an abstract base for implementations of RelDataType.
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

RelDataTypeComparability

RelDataTypeComparability is an enumeration of the categories of comparison operators which types may support.

Package org.eigenbase.reltype Description

Defines a type system for relational expressions.

Revision	$Id: //open/dev/farrago/src/org/eigenbase/reltype/package.html#5 $
Copyright	Copyright (C) 2005-2009 The Eigenbase Project Copyright (C) 2004-2009 SQLstream, Inc. Copyright (C) 2005-2009 LucidEra, Inc.
Author	Julian Hyde