Package net.hydromatic.morel.foreign

Class CalciteForeignValue

java.lang.Object

net.hydromatic.morel.foreign.CalciteForeignValue

All Implemented Interfaces:

ForeignValue

public class CalciteForeignValue
extends java.lang.Object
implements ForeignValue

Value based on a Calcite schema.

In ML, it appears as a record with a field for each table.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
private class	CalciteForeignValue.Converter	Converts from a Calcite row to an SML record.
private static class	CalciteForeignValue.EmptyDataContext	Data context that has no variables.
private static class	CalciteForeignValue.FieldConverter	Converts a field from Calcite to SML format.

Field Summary

Fields

Modifier and Type	Field	Description
private boolean	lower
private org.apache.calcite.tools.RelBuilder	relBuilder
private org.apache.calcite.schema.SchemaPlus	schema

Constructor Summary

Constructors

Constructor	Description
CalciteForeignValue(org.apache.calcite.schema.SchemaPlus schema, boolean lower)	Creates a CalciteForeignValue.

Method Summary

Modifier and Type	Method	Description
private java.lang.String	convert(java.lang.String name)
private static <E> java.util.List<E>	plus(java.util.List<E> list, E e)	Returns a copy of a list with one element appended.
private static org.apache.calcite.schema.SchemaPlus	rootSchema(org.apache.calcite.schema.SchemaPlus schema)
private CalciteForeignValue.FieldConverter	toType(org.apache.calcite.rel.type.RelDataTypeField field)
private Type	toType(org.apache.calcite.schema.Table table, TypeSystem typeSystem)
Type	type(TypeSystem typeSystem)
java.lang.Object	value()

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

schema

private final org.apache.calcite.schema.SchemaPlus schema

lower

private final boolean lower

relBuilder

private final org.apache.calcite.tools.RelBuilder relBuilder

Constructor Detail

CalciteForeignValue

public CalciteForeignValue(org.apache.calcite.schema.SchemaPlus schema,
                           boolean lower)

Creates a CalciteForeignValue.

Method Detail

rootSchema

private static org.apache.calcite.schema.SchemaPlus rootSchema(org.apache.calcite.schema.SchemaPlus schema)

type

public Type type(TypeSystem typeSystem)

Specified by:

type in interface ForeignValue

toType

private Type toType(org.apache.calcite.schema.Table table,
                    TypeSystem typeSystem)

convert

private java.lang.String convert(java.lang.String name)

toType

private CalciteForeignValue.FieldConverter toType(org.apache.calcite.rel.type.RelDataTypeField field)

value

public java.lang.Object value()

Specified by:

value in interface ForeignValue

plus

private static <E> java.util.List<E> plus(java.util.List<E> list,
                                          E e)

Returns a copy of a list with one element appended.