| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You 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 |
| <<<<<<< Updated upstream |
| * |
| * 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 |
| ======= |
| * |
| * 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 |
| >>>>>>> Stashed changes |
| * limitations under the License. |
| */ |
| |
| /* |
| * CharIdentity.java |
| * |
| */ |
| |
| package javax.jdo.identity; |
| |
| import java.io.IOException; |
| import java.io.ObjectInput; |
| import java.io.ObjectOutput; |
| |
| /** |
| * This class is for identity with a single character field. |
| * |
| * @version 2.0 |
| */ |
| public class CharIdentity extends SingleFieldIdentity<CharIdentity> { |
| |
| private static final long serialVersionUID = 1L; |
| |
| /** The key. */ |
| private char key; |
| |
| private void construct(char key) { |
| this.key = key; |
| hashCode = hashClassName() ^ key; |
| } |
| |
| /** |
| * Constructor with class and key. |
| * |
| * @param pcClass the target class |
| * @param key the key |
| */ |
| public CharIdentity(Class<?> pcClass, char key) { |
| super(pcClass); |
| construct(key); |
| } |
| |
| /** |
| * Constructor with class and key. |
| * |
| * @param pcClass the target class |
| * @param key the key |
| */ |
| public CharIdentity(Class<?> pcClass, Character key) { |
| super(pcClass); |
| setKeyAsObject(key); |
| construct(key.charValue()); |
| } |
| |
| /** |
| * Constructor with class and key. The String must have exactly one character. |
| * |
| * @param pcClass the target class |
| * @param str the key |
| */ |
| public CharIdentity(Class<?> pcClass, String str) { |
| super(pcClass); |
| assertKeyNotNull(str); |
| if (str.length() != 1) |
| throw new IllegalArgumentException(MSG.msg("EXC_StringWrongLength")); // NOI18N |
| construct(str.charAt(0)); |
| } |
| |
| /** Constructor only for Externalizable. */ |
| public CharIdentity() {} |
| |
| /** |
| * Return the key. |
| * |
| * @return the key |
| */ |
| public char getKey() { |
| return key; |
| } |
| |
| /** |
| * Return the String form of the key. |
| * |
| * @return the String form of the key |
| */ |
| public String toString() { |
| return String.valueOf(key); |
| } |
| |
| /** |
| * Determine if the other object represents the same object id. |
| * |
| * @param obj the other object |
| * @return true if both objects represent the same object id |
| */ |
| public boolean equals(Object obj) { |
| if (this == obj) { |
| return true; |
| } else if (!super.equals(obj)) { |
| return false; |
| } else { |
| CharIdentity other = (CharIdentity) obj; |
| return key == other.key; |
| } |
| } |
| |
| /** |
| * Determine the ordering of identity objects. |
| * |
| * @param o Other identity |
| * @return The relative ordering between the objects |
| * @since 2.2 |
| */ |
| public int compareTo(CharIdentity o) { |
| if (o == null) { |
| throw new ClassCastException("object is null"); |
| } |
| int result = super.compare(o); |
| return (result == 0) ? (key - o.key) : result; |
| } |
| |
| /** |
| * Create the key as an Object. |
| * |
| * @return the key as an Object |
| * @since 2.0 |
| */ |
| protected Object createKeyAsObject() { |
| return Character.valueOf(key); |
| } |
| |
| /** |
| * Write this object. Write the superclass first. |
| * |
| * @param out the output |
| */ |
| public void writeExternal(ObjectOutput out) throws IOException { |
| super.writeExternal(out); |
| out.writeChar(key); |
| } |
| |
| /** |
| * Read this object. Read the superclass first. |
| * |
| * @param in the input |
| */ |
| public void readExternal(ObjectInput in) throws IOException, ClassNotFoundException { |
| super.readExternal(in); |
| key = in.readChar(); |
| } |
| } |