ForwardingTable (Guava: Google Core Libraries for Java 19.0 API)

java.lang.Object
- com.google.common.collect.ForwardingObject
- - com.google.common.collect.ForwardingTable<R,C,V>

All Implemented Interfaces:

Table<R,C,V>
```
@GwtCompatible
public abstract class ForwardingTable<R,C,V>
extends ForwardingObject
implements Table<R,C,V>
```
A table which forwards all its method calls to another table. Subclasses should override one or more methods to modify the behavior of the backing map as desired per the decorator pattern.

Since:

7.0

Author:

Gregory Kick

Nested Class Summary
- Nested classes/interfaces inherited from interface com.google.common.collect.Table
  Table.Cell<R,C,V>

Constructor Summary

Constructors
Modifier Constructor and Description

protected ForwardingTable()
Constructor for use by subclasses.

Constructors
Modifier	Constructor and Description
`protected`	`ForwardingTable()` Constructor for use by subclasses.

Method Summary

Methods
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)` Compares the specified object with this table for equality.
`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 the hash code for this table.
`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.

Methods inherited from class com.google.common.collect.ForwardingObject
toString

Methods inherited from class java.lang.Object
clone, finalize, getClass, notify, notifyAll, wait, wait, wait

- Constructor Detail
  - ForwardingTable
```
protected ForwardingTable()
```
    Constructor for use by subclasses.
- Method Detail
  - delegate
```
protected abstract Table<R,C,V> delegate()
```
    Description copied from class: ForwardingObject
    
    Returns the backing delegate instance that methods are forwarded to. Abstract subclasses generally override this method with an abstract method that has a more specific return type, such as ForwardingSet.delegate(). Concrete subclasses override this method to supply the instance being decorated.
    
    Specified by:
    
    delegate in class ForwardingObject
  - cellSet
```
public Set<Table.Cell<R,C,V>> cellSet()
```
    Description copied from interface: Table
    
    Returns a set of all row key / column key / value triplets. Changes to the returned set will update the underlying table, and vice versa. The cell set does not support the add or addAll methods.
    
    Specified by:
    
    cellSet in interface Table<R,C,V>
    
    Returns:
    set of table cells consisting of row key / column key / value triplets
  - clear
```
public void clear()
```
    Description copied from interface: Table
    
    Removes all mappings from the table.
    
    Specified by:
    
    clear in interface Table<R,C,V>
  - column
```
public Map<R,V> column(C columnKey)
```
    Description copied from interface: Table
    
    Returns a view of all mappings that have the given column key. For each row key / column key / value mapping in the table with that column key, the returned map associates the row key with the value. If no mappings in the table have the provided column key, an empty map is returned.
    Changes to the returned map will update the underlying table, and vice versa.
    
    Specified by:
    
    column in interface Table<R,C,V>
    
    Parameters:
    columnKey - key of column to search for in the table
    
    Returns:
    the corresponding map from row keys to values
  - columnKeySet
```
public Set<C> columnKeySet()
```
    Description copied from interface: Table
    
    Returns a set of column keys that have one or more values in the table. Changes to the set will update the underlying table, and vice versa.
    
    Specified by:
    
    columnKeySet in interface Table<R,C,V>
    
    Returns:
    set of column keys
  - columnMap
```
public Map<C,Map<R,V>> columnMap()
```
    Description copied from interface: Table
    
    Returns a view that associates each column key with the corresponding map from row keys to values. Changes to the returned map will update this table. The returned map does not support 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().
    
    Specified by:
    
    columnMap in interface Table<R,C,V>
    
    Returns:
    a map view from each column key to a secondary map from row keys to values
  - contains
```
public boolean contains(Object rowKey,
               Object columnKey)
```
    Description copied from interface: Table
    
    Returns true if the table contains a mapping with the specified row and column keys.
    
    Specified by:
    
    contains in interface Table<R,C,V>
    
    Parameters:
    rowKey - key of row to search for
    columnKey - key of column to search for
  - containsColumn
```
public boolean containsColumn(Object columnKey)
```
    Description copied from interface: Table
    
    Returns true if the table contains a mapping with the specified column.
    
    Specified by:
    
    containsColumn in interface Table<R,C,V>
    
    Parameters:
    columnKey - key of column to search for
  - containsRow
```
public boolean containsRow(Object rowKey)
```
    Description copied from interface: Table
    
    Returns true if the table contains a mapping with the specified row key.
    
    Specified by:
    
    containsRow in interface Table<R,C,V>
    
    Parameters:
    rowKey - key of row to search for
  - containsValue
```
public boolean containsValue(Object value)
```
    Description copied from interface: Table
    
    Returns true if the table contains a mapping with the specified value.
    
    Specified by:
    
    containsValue in interface Table<R,C,V>
    
    Parameters:
    value - value to search for
  - get
```
public V get(Object rowKey,
    Object columnKey)
```
    Description copied from interface: Table
    
    Returns the value corresponding to the given row and column keys, or null if no such mapping exists.
    
    Specified by:
    
    get in interface Table<R,C,V>
    
    Parameters:
    rowKey - key of row to search for
    columnKey - key of column to search for
  - isEmpty
```
public boolean isEmpty()
```
    Description copied from interface: Table
    
    Returns true if the table contains no mappings.
    
    Specified by:
    
    isEmpty in interface Table<R,C,V>
  - put
```
public V put(R rowKey,
    C columnKey,
    V value)
```
    Description copied from interface: Table
    
    Associates the specified value with the specified keys. If the table already contained a mapping for those keys, the old value is replaced with the specified value.
    
    Specified by:
    
    put in interface Table<R,C,V>
    
    Parameters:
    rowKey - row key that the value should be associated with
    columnKey - column key that the value should be associated with
    value - value to be associated with the specified keys
    
    Returns:
    the value previously associated with the keys, or null if no mapping existed for the keys
  - putAll
```
public void putAll(Table<? extends R,? extends C,? extends V> table)
```
    Description copied from interface: Table
    
    Copies all mappings from the specified table to this table. The effect is equivalent to calling Table.put(R, C, V) with each row key / column key / value mapping in table.
    
    Specified by:
    
    putAll in interface Table<R,C,V>
    
    Parameters:
    table - the table to add to this table
  - remove
```
public V remove(Object rowKey,
       Object columnKey)
```
    Description copied from interface: Table
    
    Removes the mapping, if any, associated with the given keys.
    
    Specified by:
    
    remove in interface Table<R,C,V>
    
    Parameters:
    rowKey - row key of mapping to be removed
    columnKey - column key of mapping to be removed
    
    Returns:
    the value previously associated with the keys, or null if no such value existed
  - row
```
public Map<C,V> row(R rowKey)
```
    Description copied from interface: Table
    
    Returns a view of all mappings that have the given row key. For each row key / column key / value mapping in the table with that row key, the returned map associates the column key with the value. If no mappings in the table have the provided row key, an empty map is returned.
    Changes to the returned map will update the underlying table, and vice versa.
    
    Specified by:
    
    row in interface Table<R,C,V>
    
    Parameters:
    rowKey - key of row to search for in the table
    
    Returns:
    the corresponding map from column keys to values
  - rowKeySet
```
public Set<R> rowKeySet()
```
    Description copied from interface: Table
    
    Returns a set of row keys that have one or more values in the table. Changes to the set will update the underlying table, and vice versa.
    
    Specified by:
    
    rowKeySet in interface Table<R,C,V>
    
    Returns:
    set of row keys
  - rowMap
```
public Map<R,Map<C,V>> rowMap()
```
    Description copied from interface: Table
    
    Returns a view that associates each row key with the corresponding map from column keys to values. Changes to the returned map will update this table. The returned map does not support 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().
    
    Specified by:
    
    rowMap in interface Table<R,C,V>
    
    Returns:
    a map view from each row key to a secondary map from column keys to values
  - size
```
public int size()
```
    Description copied from interface: Table
    
    Returns the number of row key / column key / value mappings in the table.
    
    Specified by:
    
    size in interface Table<R,C,V>
  - values
```
public Collection<V> values()
```
    Description copied from interface: Table
    
    Returns a collection of all values, which may contain duplicates. Changes to the returned collection will update the underlying table, and vice versa.
    
    Specified by:
    
    values in interface Table<R,C,V>
    
    Returns:
    collection of values
  - equals
```
public boolean equals(Object obj)
```
    Description copied from interface: Table
    
    Compares the specified object with this table for equality. Two tables are equal when their cell views, as returned by Table.cellSet(), are equal.
    
    Specified by:
    
    equals in interface Table<R,C,V>
    
    Overrides:
    
    equals in class Object
  - hashCode
```
public int hashCode()
```
    Description copied from interface: Table
    
    Returns the hash code for this table. The hash code of a table is defined as the hash code of its cell view, as returned by Table.cellSet().
    
    Specified by:
    
    hashCode in interface Table<R,C,V>
    
    Overrides:
    
    hashCode in class Object

Class ForwardingTable<R,C,V>

Nested Class Summary

Nested classes/interfaces inherited from interface com.google.common.collect.Table

Constructor Summary

Method Summary

Methods inherited from class com.google.common.collect.ForwardingObject

Methods inherited from class java.lang.Object

Constructor Detail

ForwardingTable

Method Detail

delegate

cellSet

clear

column

columnKeySet

columnMap

contains

containsColumn

containsRow

containsValue

get

isEmpty

put

putAll

remove

row

rowKeySet

rowMap

size

values

equals

hashCode