io.requery.query

Interface Tuple

All Known Implementing Classes:

CompositeKey, MutableTuple

public interface Tuple

A collection of key-value pairs from a query.

Method Summary

Modifier and Type	Method and Description
int	count()
<V> V	get(Expression<V> key) Retrieve a value by a Expression instance.
<V> V	get(int index) Retrieve a value by a numeric index.
<V> V	get(String key) Retrieve a value by a column or alias name.

Method Detail

get

<V> V get(Expression<V> key)

Retrieve a value by a Expression instance.

Type Parameters:

V - type of result.

Parameters:

key - expression instance, this should be the same expression used in the query used to derive this result.

Returns:

the result for the given expression.

get

<V> V get(String key)

Retrieve a value by a column or alias name.

Type Parameters:

V - type of result.

Parameters:

key - the alias or column name used in the query

Returns:

the result for the given key or null if it does not exist.

get

<V> V get(int index)

Retrieve a value by a numeric index.

Type Parameters:

V - type of result.

Parameters:

index - 0 based index of the result set.

Returns:

the result at the given index.

count

int count()

Returns:

the number of items in this tuple instance.