CardinalityConstraint (biojava-legacy 1.9.5 API)

java.lang.Object
- org.biojava.bio.CardinalityConstraint

```
public final class CardinalityConstraint
extends Object
```
A constraint on the number of values a property can have.

Since:

1.3 Usefull constants for whenever you need one of the common cardinalitites. Otherwise, build a Location using the normal Location APIs.:

Author:

Matthew Pocock

Field Summary

Fields
Modifier and Type	Field	Description
`static Location`	`ANY`	The property can have any number of values, including none.
`static Location`	`NONE`	This cardinality contains no intengers, not even zero.
`static Location`	`ONE`	The property should have exactly one value.
`static Location`	`ONE_OR_MORE`	The property should have one or more values.
`static Location`	`ZERO`	The property should have zero values.
`static Location`	`ZERO_OR_ONE`	The property should have zero or one values.

Method Summary
- Methods inherited from class java.lang.Object
  clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Field Detail
  - NONE
```
public static final Location NONE
```
    This cardinality contains no intengers, not even zero. It means that there is no way to fulfill this cardinality constraint. It's like Double.NaN
  - ZERO
```
public static final Location ZERO
```
    The property should have zero values. This means that it should be absent.
  - ZERO_OR_ONE
```
public static final Location ZERO_OR_ONE
```
    The property should have zero or one values. This means that it is optional but if present must have exactly one value.
  - ANY
```
public static final Location ANY
```
    The property can have any number of values, including none.
  - ONE
```
public static final Location ONE
```
    The property should have exactly one value.
  - ONE_OR_MORE
```
public static final Location ONE_OR_MORE
```
    The property should have one or more values. It can not be absent.