HashCommon (Apache Jena)

java.lang.Object
- org.apache.jena.mem.HashCommon<Key>

Direct Known Subclasses:

HashedBunchMap, HashedTripleBunch
```
public abstract class HashCommon<Key>
extends java.lang.Object
```
Shared stuff for our hashing implementations: does the base work for hashing and growth sizes.

Nested Class Summary

Nested Classes
Modifier and Type	Class	Description
`static interface`	`HashCommon.NotifyEmpty`	A hashed structure may become empty as a side-effect of a .remove on one of its iterators: a container can request notification of this by passing a `NotifyEmpty` object in when the iterator is constructed, and its `emptied` method is called when the bunch becomes empty.

Field Summary

Fields
Modifier and Type Field Description

int capacity
The capacity (length) of the key array.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`java.lang.Object`	`getItemForTestingAt(int i)`	Answer the item at index `i` of `keys`.
`ExtendedIterator<Key>`	`keyIterator()`
`ExtendedIterator<Key>`	`keyIterator(HashCommon.NotifyEmpty container)`
`void`	`remove(Key key)`	Remove the object `key` from this hash's keys if it is present (if it's absent, do nothing).

Methods inherited from class java.lang.Object
equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Field Detail
  - capacity
```
public int capacity
```
    The capacity (length) of the key array.
- Method Detail
  - getItemForTestingAt
```
public java.lang.Object getItemForTestingAt(int i)
```
    Answer the item at index i of keys. This method is for testing purposes only.
  - remove
```
public void remove(Key key)
```
    Remove the object key from this hash's keys if it is present (if it's absent, do nothing). If a key is removed, the removeAssociatedValues will be invoked. If a key is moved, the moveAssociatedValues method will be called.
  - keyIterator
```
public ExtendedIterator<Key> keyIterator()
```
  - keyIterator
```
public ExtendedIterator<Key> keyIterator(HashCommon.NotifyEmpty container)
```