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 class`	`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

All Methods Static Methods Concrete Methods
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 `i`th 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 Detail
- Converters
```
private Converters()
```

Method Detail

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.

Class Converters