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java.lang.Object org.apache.commons.collections.bag.TypedBag
public class TypedBag
Decorates another Bag
to validate that elements added
are of a specific type.
The validation of additions is performed via an instanceof test against
a specified Class
. If an object cannot be added to the
collection, an IllegalArgumentException is thrown.
Constructor Summary | |
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protected |
TypedBag()
Restrictive constructor. |
Method Summary | |
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static Bag |
decorate(Bag bag,
java.lang.Class type)
Factory method to create a typed bag. |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Constructor Detail |
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protected TypedBag()
Method Detail |
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public static Bag decorate(Bag bag, java.lang.Class type)
If there are any elements already in the bag being decorated, they are validated.
bag
- the bag to decorate, must not be nulltype
- the type to allow into the bag, must not be null
java.lang.IllegalArgumentException
- if bag or type is null
java.lang.IllegalArgumentException
- if the bag contains invalid elements
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