Package net.hydromatic.morel.foreign

Class Converters

java.lang.Object

net.hydromatic.morel.foreign.Converters

public class Converters
extends Object

Utilities for Converter.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
private static class	Converters.C2m	Converter from Calcite types to Morel types.
(package private) static enum	Converters.FieldConverter	Converts a field from Calcite to Morel format.
private static class	Converters.RecordConverter	Converter that creates a record.

Constructor Summary

Constructors

Modifier	Constructor	Description
private	Converters()

Method Summary

Modifier and Type	Method	Description
static Type	fieldType(org.apache.calcite.rel.type.RelDataTypeField field)
static <E> Function<E,Object>	forType(org.apache.calcite.rel.type.RelDataType fromType, Type type)
static Function<org.apache.calcite.linq4j.Enumerable<Object[]>,List<Object>>	fromEnumerable(org.apache.calcite.rel.RelNode rel, Type type)
static Converter<Object[]>	ofField(org.apache.calcite.rel.type.RelDataType type, int ordinal)
(package private) static Converter<Object[]>	ofField2(Iterator<org.apache.calcite.rel.type.RelDataTypeField> fields, AtomicInteger ordinal, Type type)
(package private) static Converter<Object[]>	ofField3(org.apache.calcite.rel.type.RelDataTypeField field, AtomicInteger ordinal, Type type)
(package private) static Converter<Object[]>	offset(int i, Converter<Object[]> converter)	Creates a converter that applies to the ith field of the input array.
static Converter<Object[]>	ofRow(org.apache.calcite.rel.type.RelDataType rowType)
static Converter<Object[]>	ofRow2(org.apache.calcite.rel.type.RelDataType rowType, RecordLikeType type)
(package private) static Converter<Object[]>	ofRow3(Iterator<org.apache.calcite.rel.type.RelDataTypeField> fields, AtomicInteger ordinal, org.apache.calcite.linq4j.Enumerator<Type> types)
static Function<Object,Object>	toCalcite(Type type, org.apache.calcite.rel.type.RelDataTypeFactory typeFactory)	Returns a function that converts from Morel objects to Calcite objects.
static Function<Object,org.apache.calcite.linq4j.Enumerable<Object[]>>	toCalciteEnumerable(Type type, org.apache.calcite.rel.type.RelDataTypeFactory typeFactory)	Returns a function that converts from Morel objects to an Enumerable over Calcite rows.
static org.apache.calcite.rel.type.RelDataType	toCalciteType(Type type, org.apache.calcite.rel.type.RelDataTypeFactory typeFactory)
static Function<Object,Object>	toMorel(Type type, org.apache.calcite.rel.type.RelDataTypeFactory typeFactory)	Returns a function that converts from Calcite objects to Morel objects.

Methods inherited from class java.lang.Object

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

Constructor Details

Converters

private Converters()

Method Details

ofRow

public static Converter<Object[]> ofRow(org.apache.calcite.rel.type.RelDataType rowType)

ofRow2

public static Converter<Object[]> ofRow2(org.apache.calcite.rel.type.RelDataType rowType,
 RecordLikeType type)

ofRow3

static Converter<Object[]> ofRow3(Iterator<org.apache.calcite.rel.type.RelDataTypeField> fields,
 AtomicInteger ordinal,
 org.apache.calcite.linq4j.Enumerator<Type> types)

ofField

public static Converter<Object[]> ofField(org.apache.calcite.rel.type.RelDataType type,
 int ordinal)

ofField2

static Converter<Object[]> ofField2(Iterator<org.apache.calcite.rel.type.RelDataTypeField> fields,
 AtomicInteger ordinal,
 Type type)

offset

static Converter<Object[]> offset(int i,
 Converter<Object[]> converter)

Creates a converter that applies to the ith field of the input array.

ofField3

static Converter<Object[]> ofField3(org.apache.calcite.rel.type.RelDataTypeField field,
 AtomicInteger ordinal,
 Type type)

fromEnumerable

public static Function<org.apache.calcite.linq4j.Enumerable<Object[]>,List<Object>> fromEnumerable(org.apache.calcite.rel.RelNode rel,
 Type type)

forType

public static <E> Function<E,Object> forType(org.apache.calcite.rel.type.RelDataType fromType,
 Type type)

fieldType

public static Type fieldType(org.apache.calcite.rel.type.RelDataTypeField field)

toCalciteType

public static org.apache.calcite.rel.type.RelDataType toCalciteType(Type type,
 org.apache.calcite.rel.type.RelDataTypeFactory typeFactory)

toCalciteEnumerable

public static Function<Object,org.apache.calcite.linq4j.Enumerable<Object[]>> toCalciteEnumerable(Type type,
 org.apache.calcite.rel.type.RelDataTypeFactory typeFactory)

Returns a function that converts from Morel objects to an Enumerable over Calcite rows.

toCalcite

public static Function<Object,Object> toCalcite(Type type,
 org.apache.calcite.rel.type.RelDataTypeFactory typeFactory)

Returns a function that converts from Morel objects to Calcite objects.

toMorel

public static Function<Object,Object> toMorel(Type type,
 org.apache.calcite.rel.type.RelDataTypeFactory typeFactory)

Returns a function that converts from Calcite objects to Morel objects.