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/*
 * Copyright 2017-2024 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      https://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.springframework.data.cassandra.core.mapping;

import java.util.Collection;
import java.util.HashMap;
import java.util.Map;
import java.util.Set;

import org.springframework.lang.Nullable;
import org.springframework.util.Assert;

/**
 * Simple implementation of {@link MapId}.
 * 

* Note: This could be extended in various cool ways, like one that takes a type and validates that the given * name corresponds to an actual field or bean property on that type. There could also be another one that uses a * {@link CassandraPersistentEntity} and {@link CassandraPersistentProperty} instead of a String name. * * @author Matthew T. Adams * @author Mark Paluch */ @SuppressWarnings("serial") public class BasicMapId implements MapId { private final Map map = new HashMap<>(); /** * Create a new and empty {@link BasicMapId}. */ public BasicMapId() {} /** * Create a new {@link BasicMapId} given a {@link Map} of key-value tuples. * * @param map must not be {@literal null}. */ public BasicMapId(Map map) { Assert.notNull(map, "Map must not be null"); this.map.putAll(map); } /** * Factory method. Convenient if imported statically. * * @return {@link BasicMapId} */ public static MapId id() { return new BasicMapId(); } /** * Factory method. Convenient if imported statically. * * @return {@link BasicMapId} */ public static MapId id(String name, Object value) { return new BasicMapId().with(name, value); } /** * Factory method. Convenient if imported statically. * * @return {@link BasicMapId} */ public static MapId id(MapId id) { return new BasicMapId(id); } @Override public BasicMapId with(String name, @Nullable Object value) { put(name, value); return this; } @Override public void clear() { map.clear(); } @Override public boolean containsKey(Object name) { return map.containsKey(name); } @Override public boolean containsValue(Object value) { return map.containsValue(value); } @Override public Set> entrySet() { return map.entrySet(); } @Override public boolean equals(@Nullable Object that) { if (this == that) { return true; } if (that == null) { return false; } if (!(that instanceof Map)) { // we can be equal to a Map return false; } return map.equals(that); } @Override public Object get(Object name) { return map.get(name); } @Override public int hashCode() { return map.hashCode(); } @Override public boolean isEmpty() { return map.isEmpty(); } @Override public Set keySet() { return map.keySet(); } @Override public Object put(String name, Object value) { return map.put(name, value); } @Override public void putAll(Map source) { map.putAll(source); } @Override public Object remove(Object name) { return map.remove(name); } @Override public int size() { return map.size(); } @Override public Collection values() { return map.values(); } @Override public String toString() { StringBuilder s = new StringBuilder("{ "); boolean first = true; for (Map.Entry entry : map.entrySet()) { if (first) { first = false; } else { s.append(", "); } s.append(entry.getKey()).append(" : ").append(entry.getValue()); } return s.append(" }").toString(); } }