    001    /*
    002     * Copyright (C) 2009 The Guava Authors
    003     *
    004     * Licensed under the Apache License, Version 2.0 (the "License");
    005     * you may not use this file except in compliance with the License.
    006     * You may obtain a copy of the License at
    007     *
    008     * http://www.apache.org/licenses/LICENSE-2.0
    009     *
    010     * Unless required by applicable law or agreed to in writing, software
    011     * distributed under the License is distributed on an "AS IS" BASIS,
    012     * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    013     * See the License for the specific language governing permissions and
    014     * limitations under the License.
    015     */
    016
    017    package com.google.common.collect;
    018
    019    import com.google.common.annotations.Beta;
    020    import com.google.common.annotations.GwtCompatible;
    021
    022    import java.util.Collection;
    023    import java.util.Map;
    024    import java.util.Set;
    025
    026    /**
    027     * A table which forwards all its method calls to another table. Subclasses
    028     * should override one or more methods to modify the behavior of the backing
    029     * map as desired per the <a
    030     * href="http://en.wikipedia.org/wiki/Decorator_pattern">decorator pattern</a>.
    031     *
    032     * @author Gregory Kick
    033     * @since 7.0
    034     */
    035    @Beta
    036    @GwtCompatible
    037    public abstract class ForwardingTable<R, C, V> extends ForwardingObject
    038        implements Table<R, C, V> {
    039      /** Constructor for use by subclasses. */
    040      protected ForwardingTable() {}
    041
    042      @Override protected abstract Table<R, C, V> delegate();
    043
    044      @Override
    045      public Set<Cell<R, C, V>> cellSet() {
    046        return delegate().cellSet();
    047      }
    048
    049      @Override
    050      public void clear() {
    051        delegate().clear();
    052      }
    053
    054      @Override
    055      public Map<R, V> column(C columnKey) {
    056        return delegate().column(columnKey);
    057      }
    058
    059      @Override
    060      public Set<C> columnKeySet() {
    061        return delegate().columnKeySet();
    062      }
    063
    064      @Override
    065      public Map<C, Map<R, V>> columnMap() {
    066        return delegate().columnMap();
    067      }
    068
    069      @Override
    070      public boolean contains(Object rowKey, Object columnKey) {
    071        return delegate().contains(rowKey, columnKey);
    072      }
    073
    074      @Override
    075      public boolean containsColumn(Object columnKey) {
    076        return delegate().containsColumn(columnKey);
    077      }
    078
    079      @Override
    080      public boolean containsRow(Object rowKey) {
    081        return delegate().containsRow(rowKey);
    082      }
    083
    084      @Override
    085      public boolean containsValue(Object value) {
    086        return delegate().containsValue(value);
    087      }
    088
    089      @Override
    090      public V get(Object rowKey, Object columnKey) {
    091        return delegate().get(rowKey, columnKey);
    092      }
    093
    094      @Override
    095      public boolean isEmpty() {
    096        return delegate().isEmpty();
    097      }
    098
    099      @Override
    100      public V put(R rowKey, C columnKey, V value) {
    101        return delegate().put(rowKey, columnKey, value);
    102      }
    103
    104      @Override
    105      public void putAll(Table<? extends R, ? extends C, ? extends V> table) {
    106        delegate().putAll(table);
    107      }
    108
    109      @Override
    110      public V remove(Object rowKey, Object columnKey) {
    111        return delegate().remove(rowKey, columnKey);
    112      }
    113
    114      @Override
    115      public Map<C, V> row(R rowKey) {
    116        return delegate().row(rowKey);
    117      }
    118
    119      @Override
    120      public Set<R> rowKeySet() {
    121        return delegate().rowKeySet();
    122      }
    123
    124      @Override
    125      public Map<R, Map<C, V>> rowMap() {
    126        return delegate().rowMap();
    127      }
    128
    129      @Override
    130      public int size() {
    131        return delegate().size();
    132      }
    133
    134      @Override
    135      public Collection<V> values() {
    136        return delegate().values();
    137      }
    138
    139      @Override public boolean equals(Object obj) {
    140        return (obj == this) || delegate().equals(obj);
    141      }
    142
    143      @Override public int hashCode() {
    144        return delegate().hashCode();
    145      }
    146    }