LinkedMap

java.lang.Object
- org.pentaho.reporting.libraries.base.util.LinkedMap

All Implemented Interfaces:

Serializable, Cloneable
```
public class LinkedMap
extends Object
implements Cloneable, Serializable
```
A fast linked-hashmap that avoids any unneccessay work. It is slightly slower than an ordinary hashmap but faster than a combined hashmap and list-index that would be needed to get this functionality on JDK 1.2. The map is as fast as the LinkedHashMap of JDK 1.4+.

Author:

Thomas Morgner

See Also:
Serialized Form

Constructor Summary

Constructors
Constructor and Description
`LinkedMap()` Default constructor.
`LinkedMap(int initialCapacity, float loadFactor)` Creates a new map with the given initial number of buckets and the given loadfactor.

Method Summary

Methods
Modifier and Type	Method and Description
`void`	`clear()` Clears the map and removes all map records.
`Object`	`clone()` Clones this map.
`boolean`	`containsKey(Object key)` Checks, whether the map contains an entry for the key.
`Object`	`get(Object key)` Retrieves the object stored under the given key from the map.
`boolean`	`isEmpty()` Checks whether this collection is empty.
`Object[]`	`keys()` Returns the keys used in this map as array.
`Object[]`	`keys(Object[] data)` Returns the keys used in this map as array.
`Object`	`put(Object key, Object value)` Stores the given value in the map using the provided key.
`Object`	`remove(Object key)` Removes the object stored under the given key from the map.
`int`	`size()` Returns the number of entries in the map.
`Object[]`	`values()` Returns the values used in this map as array.
`Object[]`	`values(Object[] data)` Returns the values used in this map as array.

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

- Constructor Detail
  - LinkedMap
```
public LinkedMap()
```
    Default constructor. Creates a map for 16 entries with a default load-factor of 0.75.
  - LinkedMap
```
public LinkedMap(int initialCapacity,
         float loadFactor)
```
    Creates a new map with the given initial number of buckets and the given loadfactor. A load factor greater 1 will always cause hash-collisions, while lower loadfactors reduce the likelyhood of collisions.
    
    Parameters:
    initialCapacity - the initial capacity.
    loadFactor - the load factor of the bucket-array.
- Method Detail
  - size
```
public int size()
```
    Returns the number of entries in the map.
    
    Returns:
    the number of entries.
  - put
```
public Object put(Object key,
         Object value)
```
    Stores the given value in the map using the provided key. Both key and value can be null.
    
    Parameters:
    key - the key.
    value - the value to be stored under the key.
    
    Returns:
    the previous value stored under this key or null of the entry is new.
  - get
```
public Object get(Object key)
```
    Retrieves the object stored under the given key from the map.
    
    Parameters:
    key - the key for which a value should be located.
    
    Returns:
    the value or null, if the map did not contain a value for the key.
  - remove
```
public Object remove(Object key)
```
    Removes the object stored under the given key from the map.
    
    Parameters:
    key - the key for which a value should be located.
    
    Returns:
    the value or null, if the map did not contain a value for the key.
  - containsKey
```
public boolean containsKey(Object key)
```
    Checks, whether the map contains an entry for the key.
    
    Parameters:
    key - the key for which a value should be located.
    
    Returns:
    true if the map contains a value for the key, false otherwise.
  - keys
```
public Object[] keys(Object[] data)
```
    Returns the keys used in this map as array. The keys are returned in the insertation order.
    
    Parameters:
    data - the object array that should receive the keys.
    
    Returns:
    the array filled with the keys.
  - keys
```
public Object[] keys()
```
    Returns the keys used in this map as array. The keys are returned in the insertation order.
    
    Returns:
    the array filled with the keys.
  - values
```
public Object[] values()
```
    Returns the values used in this map as array. The values are returned in the insertation order.
    
    Returns:
    the array filled with the values.
  - values
```
public Object[] values(Object[] data)
```
    Returns the values used in this map as array. The values are returned in the insertation order.
    
    Parameters:
    data - the object array that should receive the values.
    
    Returns:
    the array filled with the values.
  - clear
```
public void clear()
```
    Clears the map and removes all map records.
  - clone
```
public Object clone()
             throws CloneNotSupportedException
```
    Clones this map.
    
    Overrides:
    
    clone in class Object
    
    Returns:
    the cloned map.
    
    Throws:
    
    CloneNotSupportedException
  - isEmpty
```
public boolean isEmpty()
```
    Checks whether this collection is empty.
    
    Returns:
    true, if the collection is empty, false otherwise.

Class LinkedMap

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Constructor Detail

LinkedMap

LinkedMap

Method Detail

size

put

get

remove

containsKey

keys

keys

values

values

clear

clone

isEmpty