Package net.hydromatic.morel.foreign

Provides access to external data sources.

Interface Summary

Interface	Description
CalciteFunctions.Arg	Operand to a user-defined function.
Converter<E>	Converts from a Calcite row to a Morel value (often a record).
DataSet	Data set for testing.
ForeignValue	External value.

Class Summary

Class	Description
Calcite	Runtime context.
Calcite.CalciteCode	Evaluates a Calcite relational expression, converting it to Morel list type type.
Calcite.CalciteMap	Extension to Calcite context that remembers the foreign value for each name.
Calcite.DecorrelateProgram	Copied from Programs.
Calcite.EmptyDataContext	Data context that has no variables.
CalciteForeignValue	Value based on a Calcite schema.
CalciteFunctions	Calcite table-valued user-defined function that evaluates a Morel expression and returns the result as a relation.
CalciteFunctions.Context	Execution context.
CalciteFunctions.MorelApplyFunction	Calcite user-defined function that applies a Morel function (or closure) to an argument.
CalciteFunctions.MorelApplyFunction.Compiled	Compiled state.
CalciteFunctions.MorelScalarFunction	Calcite user-defined function that evaluates a Morel string and returns a scalar value.
CalciteFunctions.MorelScalarFunction.Compiled	Compiled state.
CalciteFunctions.MorelTableFunction	Calcite user-defined function that evaluates a Morel string and returns a table.
CalciteFunctions.MorelTableFunction.Compiled	Compiled state.
Converters	Utilities for Converter.
Converters.C2m	Converter from Calcite types to Morel types.
Converters.RecordConverter	Converter that creates a record.
RelList	A list whose contents are computed by evaluating a relational expression.

Enum Summary

Enum	Description
Converters.FieldConverter	Converts a field from Calcite to Morel format.