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PCJ API Version 1.2 |
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java.lang.Object bak.pcj.map.AbstractFloatKeyLongMap bak.pcj.adapter.MapToFloatKeyLongMapAdapter
This class represents adaptions of Java Collections Framework maps to primitive maps from float values to long values. The adapter is implemented as a wrapper around the map. Thus, changes to the underlying map are reflected by this map and vice versa.
Adapters from JCF maps to primitive map will fail if the JCF collection contains null keys/values or keys/values of the wrong class. However, adapters are not fast failing in the case that the underlying map should contain illegal keys or values. To implement fast failure would require every operation to check every key and value of the underlying map before doing anything. Instead validation methods are provided. They can be called using the assertion facility in the client code:
MapToFloatKeyLongMapAdapter s; ... assert s.validate();or by letting the adapter throw an exception on illegal values:
MapToFloatKeyLongMapAdapter s; ... s.evalidate(); // Throws an exception on illegal valuesEither way, validation must be invoked directly by the client code.
Field Summary | |
protected Long |
lastValue
The value corresponding to the last key found by containsKey(). |
protected Map |
map
The underlying map. |
Constructor Summary | |
MapToFloatKeyLongMapAdapter(Map map)
Creates a new adaption to a map from float values to long values. |
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MapToFloatKeyLongMapAdapter(Map map,
boolean validate)
Creates a new adaption to a map from float values to long values. |
Method Summary | |
void |
clear()
Clears this map. |
boolean |
containsKey(float key)
Indicates whether this map contains a mapping from a specified key. |
boolean |
containsValue(long value)
Indicates whether this map contains a mapping to a specified value. |
FloatKeyLongMapIterator |
entries()
Returns an iterator over the entries of this map. |
void |
evalidate()
Validates the map underlying this adapter and throws an exception if it is invalid. |
long |
get(float key)
Maps a specified key to a value. |
FloatSet |
keySet()
Returns a set view of the keys of this map. |
long |
lget()
Returns the last value corresponding to a positive result from containsKey(float) . |
long |
put(float key,
long value)
Adds a mapping from a specified key to a specified value to this map. |
long |
remove(float key)
Removes the mapping from a specified key from this map. |
int |
size()
Returns the size of this map. |
long |
tget(float key)
Maps a specified key to a value. |
boolean |
validate()
Indicates whether the underlying map is valid for this adapter. |
LongCollection |
values()
Returns a collection view of the values in this map. |
Methods inherited from class bak.pcj.map.AbstractFloatKeyLongMap |
equals, hashCode, isEmpty, putAll, toString, trimToSize |
Methods inherited from class java.lang.Object |
clone, finalize, getClass, notify, notifyAll, wait, wait, wait |
Methods inherited from interface bak.pcj.map.FloatKeyLongMap |
equals, hashCode, isEmpty, putAll, trimToSize |
Field Detail |
protected Map map
protected Long lastValue
Constructor Detail |
public MapToFloatKeyLongMapAdapter(Map map)
map
- the underlying map. This map must
consist of keys of class
Float
.
values of class
Long
. Otherwise a
ClassCastException
will be thrown by some methods.
NullPointerException
- if map is null.public MapToFloatKeyLongMapAdapter(Map map, boolean validate)
map
- the underlying map. This map must
consist of keys of class
Float
.
values of class
Long
. Otherwise a
ClassCastException
will be thrown by some methods.validate
- indicates whether map should
be checked for illegal values.
NullPointerException
- if map is null.
IllegalStateException
- if validate is true and
map contains a null key/value,
a key that is not of class
Float
,
or a value that is not of class
Long
.Method Detail |
public void clear()
FloatKeyLongMap
clear
in interface FloatKeyLongMap
clear
in class AbstractFloatKeyLongMap
public boolean containsKey(float key)
FloatKeyLongMap
lget()
will return the corresponding value.
containsKey
in interface FloatKeyLongMap
containsKey
in class AbstractFloatKeyLongMap
public boolean containsValue(long value)
FloatKeyLongMap
containsValue
in interface FloatKeyLongMap
containsValue
in class AbstractFloatKeyLongMap
public FloatKeyLongMapIterator entries()
FloatKeyLongMap
entries
in interface FloatKeyLongMap
public long get(float key)
FloatKeyLongMap
get
in interface FloatKeyLongMap
get
in class AbstractFloatKeyLongMap
public FloatSet keySet()
FloatKeyLongMap
keySet
in interface FloatKeyLongMap
public long lget()
FloatKeyLongMap
containsKey(float)
. This is useful
for checking checking the existence of a mapping while
avoiding two lookups on the same key.
lget
in interface FloatKeyLongMap
containsKey(float)
.FloatKeyLongMap.get(float)
,
FloatKeyLongMap.tget(float)
,
FloatKeyLongMap.containsKey(float)
public long put(float key, long value)
FloatKeyLongMap
put
in interface FloatKeyLongMap
key
- the key of the mapping to add to this map.value
- the value of the mapping to add to this map.
MapDefaults
public long remove(float key)
FloatKeyLongMap
remove
in interface FloatKeyLongMap
remove
in class AbstractFloatKeyLongMap
public int size()
FloatKeyLongMap
size
in interface FloatKeyLongMap
size
in class AbstractFloatKeyLongMap
public LongCollection values()
FloatKeyLongMap
values
in interface FloatKeyLongMap
public long tget(float key)
FloatKeyLongMap
tget
in interface FloatKeyLongMap
tget
in class AbstractFloatKeyLongMap
public boolean validate()
Float
keys, no null
keys/values, and only Long
values.
public void evalidate()
Float
keys, no null
keys/values, and only Long
values.
IllegalStateException
- if the underlying map is invalid.
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PCJ API Version 1.2 |
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