Package net.hydromatic.morel.type

Class RecordType

java.lang.Object

net.hydromatic.morel.type.BaseType

net.hydromatic.morel.type.RecordType

All Implemented Interfaces:

RecordLikeType, Type

public class RecordType
extends BaseType
implements RecordLikeType

The type of a record value.

Nested Class Summary

Nested classes/interfaces inherited from interface net.hydromatic.morel.type.Type

Type.Def, Type.Key

Field Summary

Fields

Modifier and Type	Field	Description
SortedMap<String,Type>	argNameTypes
static com.google.common.collect.Ordering<String>	ORDERING	Ordering that compares integer values numerically, string values lexicographically, and integer values before string values.

Fields inherited from class net.hydromatic.morel.type.BaseType

op

Constructor Summary

Constructors

Constructor	Description
RecordType(com.google.common.collect.ImmutableSortedMap<String,Type> argNameTypes)

Method Summary

Modifier and Type	Method	Description
<R> R	accept(TypeVisitor<R> typeVisitor)
SortedMap<String,Type>	argNameTypes()
Type	argType(int i)	Returns the type of the ith field, or throws.
static int	compareNames(String o1, String o2)	Helper for ORDERING.
RecordType	copy(TypeSystem typeSystem, UnaryOperator<Type> transform)	Copies this type, applying a given transform to component types, and returning the original type if the component types are unchanged.
Type.Key	key()	Description of the type, e.g.
Ord<Type>	lookupField(String fieldName)	Returns the index of a given field, or -1.
private static int	parseInt(String s)	Parses a string that contains an integer value; returns Integer.MAX_VALUE if the string does not contain an integer, or if the value is less than zero, or if the value is greater than or equal to 1 billion.

Methods inherited from class net.hydromatic.morel.type.BaseType

op, toString

Methods inherited from class java.lang.Object

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

Methods inherited from interface net.hydromatic.morel.type.Type

moniker, op, substitute

Field Detail

argNameTypes

public final SortedMap<String,Type> argNameTypes

ORDERING

public static final com.google.common.collect.Ordering<String> ORDERING

Ordering that compares integer values numerically, string values lexicographically, and integer values before string values.

Thus: 2, 22, 202, a, a2, a202, a22.

Constructor Detail

RecordType

RecordType(com.google.common.collect.ImmutableSortedMap<String,Type> argNameTypes)

Method Detail

argNameTypes

public SortedMap<String,Type> argNameTypes()

Specified by:

argNameTypes in interface RecordLikeType

argType

public Type argType(int i)

Description copied from interface: RecordLikeType

Returns the type of the ith field, or throws.

Specified by:

argType in interface RecordLikeType

accept

public <R> R accept(TypeVisitor<R> typeVisitor)

Specified by:

accept in interface Type

key

public Type.Key key()

Description copied from interface: Type

Description of the type, e.g. "int", "int -> int", "NONE | SOME of 'a".

Specified by:

key in interface Type

copy

public RecordType copy(TypeSystem typeSystem,
                       UnaryOperator<Type> transform)

Description copied from interface: Type

Copies this type, applying a given transform to component types, and returning the original type if the component types are unchanged.

Specified by:

copy in interface Type

compareNames

public static int compareNames(String o1,
                               String o2)

Helper for ORDERING.

parseInt

private static int parseInt(String s)

Parses a string that contains an integer value; returns Integer.MAX_VALUE if the string does not contain an integer, or if the value is less than zero, or if the value is greater than or equal to 1 billion.

This approach is much faster for our purposes than Integer.parseInt(String), which has to create and throw an exception if the value is not an integer.

lookupField

public Ord<Type> lookupField(String fieldName)

Returns the index of a given field, or -1.