@GwtCompatible public abstract class ForwardingTable<R,C,V> extends ForwardingObject implements Table<R,C,V>
Table.Cell<R,C,V>
Modifier | Constructor and Description |
---|---|
protected |
ForwardingTable()
Constructor for use by subclasses.
|
Modifier and Type | Method and Description |
---|---|
Set<Table.Cell<R,C,V>> |
cellSet()
Returns a set of all row key / column key / value triplets.
|
void |
clear()
Removes all mappings from the table.
|
Map<R,V> |
column(C columnKey)
Returns a view of all mappings that have the given column key.
|
Set<C> |
columnKeySet()
Returns a set of column keys that have one or more values in the table.
|
Map<C,Map<R,V>> |
columnMap()
Returns a view that associates each column key with the corresponding map from row keys to
values.
|
boolean |
contains(Object rowKey,
Object columnKey)
Returns
true if the table contains a mapping with the specified row and column keys. |
boolean |
containsColumn(Object columnKey)
Returns
true if the table contains a mapping with the specified column. |
boolean |
containsRow(Object rowKey)
Returns
true if the table contains a mapping with the specified row key. |
boolean |
containsValue(Object value)
Returns
true if the table contains a mapping with the specified value. |
protected abstract Table<R,C,V> |
delegate()
Returns the backing delegate instance that methods are forwarded to.
|
boolean |
equals(Object obj)
Indicates whether some other object is "equal to" this one.
|
V |
get(Object rowKey,
Object columnKey)
Returns the value corresponding to the given row and column keys, or
null if no such
mapping exists. |
int |
hashCode()
Returns a hash code value for the object.
|
boolean |
isEmpty()
Returns
true if the table contains no mappings. |
V |
put(R rowKey,
C columnKey,
V value)
Associates the specified value with the specified keys.
|
void |
putAll(Table<? extends R,? extends C,? extends V> table)
Copies all mappings from the specified table to this table.
|
V |
remove(Object rowKey,
Object columnKey)
Removes the mapping, if any, associated with the given keys.
|
Map<C,V> |
row(R rowKey)
Returns a view of all mappings that have the given row key.
|
Set<R> |
rowKeySet()
Returns a set of row keys that have one or more values in the table.
|
Map<R,Map<C,V>> |
rowMap()
Returns a view that associates each row key with the corresponding map from column keys to
values.
|
int |
size()
Returns the number of row key / column key / value mappings in the table.
|
Collection<V> |
values()
Returns a collection of all values, which may contain duplicates.
|
toString
protected ForwardingTable()
protected abstract Table<R,C,V> delegate()
ForwardingObject
ForwardingSet.delegate()
. Concrete subclasses override this method to supply the
instance being decorated.delegate
in class ForwardingObject
public Set<Table.Cell<R,C,V>> cellSet()
Table
add
or
addAll
methods.public void clear()
Table
public Map<R,V> column(C columnKey)
Table
Changes to the returned map will update the underlying table, and vice versa.
public Set<C> columnKeySet()
Table
columnKeySet
in interface Table<R,C,V>
public Map<C,Map<R,V>> columnMap()
Table
put()
or putAll()
, or setValue()
on its entries.
In contrast, the maps returned by columnMap().get()
have the same behavior as those
returned by Table.column(C)
. Those maps may support setValue()
, put()
, and
putAll()
.
public boolean contains(Object rowKey, Object columnKey)
Table
true
if the table contains a mapping with the specified row and column keys.public boolean containsColumn(Object columnKey)
Table
true
if the table contains a mapping with the specified column.containsColumn
in interface Table<R,C,V>
columnKey
- key of column to search forpublic boolean containsRow(Object rowKey)
Table
true
if the table contains a mapping with the specified row key.containsRow
in interface Table<R,C,V>
rowKey
- key of row to search forpublic boolean containsValue(Object value)
Table
true
if the table contains a mapping with the specified value.containsValue
in interface Table<R,C,V>
value
- value to search forpublic V get(Object rowKey, Object columnKey)
Table
null
if no such
mapping exists.public boolean isEmpty()
Table
true
if the table contains no mappings.@CanIgnoreReturnValue public V put(R rowKey, C columnKey, V value)
Table
put
in interface Table<R,C,V>
rowKey
- row key that the value should be associated withcolumnKey
- column key that the value should be associated withvalue
- value to be associated with the specified keysnull
if no mapping existed
for the keyspublic void putAll(Table<? extends R,? extends C,? extends V> table)
Table
Table.put(R, C, V)
with each row key / column key / value mapping in table
.@CanIgnoreReturnValue public V remove(Object rowKey, Object columnKey)
Table
public Map<C,V> row(R rowKey)
Table
Changes to the returned map will update the underlying table, and vice versa.
public Set<R> rowKeySet()
Table
public Map<R,Map<C,V>> rowMap()
Table
put()
or putAll()
, or setValue()
on its entries.
In contrast, the maps returned by rowMap().get()
have the same behavior as those
returned by Table.row(R)
. Those maps may support setValue()
, put()
, and putAll()
.
public int size()
Table
public Collection<V> values()
Table
public boolean equals(Object obj)
java.lang.Object
The equals
method implements an equivalence relation
on non-null object references:
x
, x.equals(x)
should return
true
.
x
and y
, x.equals(y)
should return true
if and only if
y.equals(x)
returns true
.
x
, y
, and z
, if
x.equals(y)
returns true
and
y.equals(z)
returns true
, then
x.equals(z)
should return true
.
x
and y
, multiple invocations of
x.equals(y)
consistently return true
or consistently return false
, provided no
information used in equals
comparisons on the
objects is modified.
x
,
x.equals(null)
should return false
.
The equals
method for class Object
implements
the most discriminating possible equivalence relation on objects;
that is, for any non-null reference values x
and
y
, this method returns true
if and only
if x
and y
refer to the same object
(x == y
has the value true
).
Note that it is generally necessary to override the hashCode
method whenever this method is overridden, so as to maintain the
general contract for the hashCode
method, which states
that equal objects must have equal hash codes.
public int hashCode()
java.lang.Object
HashMap
.
The general contract of hashCode
is:
hashCode
method
must consistently return the same integer, provided no information
used in equals
comparisons on the object is modified.
This integer need not remain consistent from one execution of an
application to another execution of the same application.
equals(Object)
method, then calling the hashCode
method on each of
the two objects must produce the same integer result.
Object.equals(java.lang.Object)
method, then calling the hashCode
method on each of the
two objects must produce distinct integer results. However, the
programmer should be aware that producing distinct integer results
for unequal objects may improve the performance of hash tables.
As much as is reasonably practical, the hashCode method defined by
class Object
does return distinct integers for distinct
objects. (This is typically implemented by converting the internal
address of the object into an integer, but this implementation
technique is not required by the
Java™ programming language.)
hashCode
in interface Table<R,C,V>
hashCode
in class Object
Object.equals(java.lang.Object)
,
System.identityHashCode(java.lang.Object)
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