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java.lang.Objectorg.apache.mahout.math.PersistentObject
org.apache.mahout.math.set.AbstractSet
org.apache.mahout.math.map.AbstractLongObjectMap<T>
public abstract class AbstractLongObjectMap<T>
| Field Summary |
|---|
| Fields inherited from class org.apache.mahout.math.set.AbstractSet |
|---|
DEFAULT_CAPACITY, DEFAULT_MAX_LOAD_FACTOR, DEFAULT_MIN_LOAD_FACTOR, distinct, highWaterMark, lowWaterMark, maxLoadFactor, minLoadFactor |
| Constructor Summary | |
|---|---|
AbstractLongObjectMap()
|
|
| Method Summary | |
|---|---|
boolean |
containsKey(long key)
Returns true if the receiver contains the specified key. |
boolean |
containsValue(T value)
Returns true if the receiver contains the specified value. |
AbstractLongObjectMap<T> |
copy()
Returns a deep copy of the receiver; uses clone() and casts the result. |
boolean |
equals(Object obj)
Compares the specified object with this map for equality. |
abstract boolean |
forEachKey(LongProcedure procedure)
Applies a procedure to each key of the receiver, if any. |
boolean |
forEachPair(LongObjectProcedure<T> procedure)
Applies a procedure to each (key,value) pair of the receiver, if any. |
abstract T |
get(long key)
Returns the value associated with the specified key. |
int |
hashCode()
|
LongArrayList |
keys()
Returns a list filled with all keys contained in the receiver. |
void |
keys(LongArrayList list)
Fills all keys contained in the receiver into the specified list. |
void |
keysSortedByValue(LongArrayList keyList)
Fills all keys sorted ascending by their associated value into the specified list. |
void |
pairsMatching(LongObjectProcedure<T> condition,
LongArrayList keyList,
List<T> valueList)
Fills all pairs satisfying a given condition into the specified lists. |
void |
pairsSortedByKey(LongArrayList keyList,
List<T> valueList)
Fills all keys and values sorted ascending by key into the specified lists. |
void |
pairsSortedByValue(LongArrayList keyList,
List<T> valueList)
Fills all keys and values sorted ascending by value according to natural ordering into the specified lists. |
abstract boolean |
put(long key,
T value)
Associates the given key with the given value. |
abstract boolean |
removeKey(long key)
Removes the given key with its associated element from the receiver, if present. |
String |
toString()
Returns a string representation of the receiver, containing the String representation of each key-value pair, sorted ascending by key. |
String |
toStringByValue()
Returns a string representation of the receiver, containing the String representation of each key-value pair, sorted ascending by value, according to natural ordering. |
List<T> |
values()
Returns a list filled with all values contained in the receiver. |
void |
values(List<T> list)
Fills all values contained in the receiver into the specified list. |
| Methods inherited from class org.apache.mahout.math.set.AbstractSet |
|---|
chooseGrowCapacity, chooseHighWaterMark, chooseLowWaterMark, chooseMeanCapacity, chooseShrinkCapacity, clear, ensureCapacity, equalsMindTheNull, isEmpty, nextPrime, setUp, size, trimToSize |
| Methods inherited from class org.apache.mahout.math.PersistentObject |
|---|
clone |
| Methods inherited from class java.lang.Object |
|---|
finalize, getClass, notify, notifyAll, wait, wait, wait |
| Constructor Detail |
|---|
public AbstractLongObjectMap()
| Method Detail |
|---|
public boolean containsKey(long key)
public boolean containsValue(T value)
public AbstractLongObjectMap<T> copy()
clone() and casts the result.
public boolean equals(Object obj)
m1.forEachPair(
new LongObjectProcedure() {
public boolean apply(long key, Object value) {
return m2.containsKey(key) && m2.get(key) == value;
}
}
)
&&
m2.forEachPair(
new LongObjectProcedure() {
public boolean apply(long key, Object value) {
return m1.containsKey(key) && m1.get(key) == value;
}
}
);
This implementation first checks if the specified object is this map; if so it returns true. Then, it
checks if the specified object is a map whose size is identical to the size of this set; if not, it it returns
false. If so, it applies the iteration as described above.
equals in class Objectobj - object to be compared for equality with this map.
public int hashCode()
hashCode in class Objectpublic abstract boolean forEachKey(LongProcedure procedure)
procedure - the procedure to be applied. Stops iteration if the procedure returns false, otherwise
continues.
public boolean forEachPair(LongObjectProcedure<T> procedure)
forEachKey(LongProcedure).
procedure - the procedure to be applied. Stops iteration if the procedure returns false, otherwise
continues.
public abstract T get(long key)
containsKey(long) whether the given key has a value associated or not, i.e. whether there exists an association
for the given key or not.
key - the key to be searched for.
public LongArrayList keys()
forEachKey(LongProcedure). This method can be used to iterate over the keys of the receiver.
public void keys(LongArrayList list)
forEachKey(LongProcedure). This method can be used to iterate over the keys of the receiver.
list - the list to be filled, can have any size.public void keysSortedByValue(LongArrayList keyList)
Example:
keys = (8,7,6), values = (1,2,2) --> keyList =
(8,6,7)
keyList - the list to be filled, can have any size.
public void pairsMatching(LongObjectProcedure<T> condition,
LongArrayList keyList,
List<T> valueList)
forEachKey(LongProcedure).
Example:
LongObjectProcedure condition = new LongObjectProcedure() { // match even keys only
public boolean apply(long key, Object value) { return key%2==0; }
}
keys = (8,7,6), values = (1,2,2) --> keyList = (6,8), valueList = (2,1)
condition - the condition to be matched. Takes the current key as first and the current value as second
argument.keyList - the list to be filled with keys, can have any size.valueList - the list to be filled with values, can have any size.
public void pairsSortedByKey(LongArrayList keyList,
List<T> valueList)
Example:
keys = (8,7,6), values = (1,2,2) --> keyList = (6,7,8), valueList = (2,2,1)
keyList - the list to be filled with keys, can have any size.valueList - the list to be filled with values, can have any size.
public void pairsSortedByValue(LongArrayList keyList,
List<T> valueList)
Example:
keys = (8,7,6), values =
(1,2,2) --> keyList = (8,6,7), valueList = (1,2,2)
keyList - the list to be filled with keys, can have any size.valueList - the list to be filled with values, can have any size.
public abstract boolean put(long key,
T value)
key - the key the value shall be associated with.value - the value to be associated.
public abstract boolean removeKey(long key)
key - the key to be removed from the receiver.
public String toString()
toString in class Objectpublic String toStringByValue()
public List<T> values()
forEachKey(LongProcedure). This method can be used to iterate over the values of the receiver.
public void values(List<T> list)
forEachKey(LongProcedure). This method can be used to iterate over the values of the receiver.
list - the list to be filled, can have any size.
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