com.aoindustries.dao

Interface Tuple<T extends Tuple<T> & Comparable<? super T>>

All Known Subinterfaces:

Tuple2<C1,C2,T>, Tuple3<C1,C2,C3,T>, TupleN<C,T>

public interface Tuple<T extends Tuple<T> & Comparable<? super T>>

Allows sets of columns to be used as multi-column keys.

Author:

AO Industries, Inc.

Method Summary

Modifier and Type	Method and Description
int	compareTo(T o) The default ordering is based on column value comparisons.
boolean	equals(Object obj) The equals is based on equal column values.
Comparable<?>[]	getColumns() Gets an array of all column values.
int	hashCode() The hashCode is based on the column values.
String	toString() Based on the column values (column1,column2,...)

Method Detail

getColumns

Comparable<?>[] getColumns()

Gets an array of all column values.

toString

String toString()

Based on the column values (column1,column2,...)

Overrides:

toString in class Object

equals

boolean equals(Object obj)

The equals is based on equal column values.

Overrides:

equals in class Object

hashCode

int hashCode()

The hashCode is based on the column values.

Overrides:

hashCode in class Object

compareTo

int compareTo(T o)

The default ordering is based on column value comparisons. If both values are Strings, will use the model collator. If one tuple has few columns than the other, and all the values are equal, the tuple with fewer columns is considered to be first.