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JsonValueImpl.java
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/*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
*
* Copyright (c) 2016-2017 Oracle and/or its affiliates. All rights reserved.
*
* The contents of this file are subject to the terms of either the GNU
* General Public License Version 2 only ("GPL") or the Common Development
* and Distribution License("CDDL") (collectively, the "License"). You
* may not use this file except in compliance with the License. You can
* obtain a copy of the License at
* https://oss.oracle.com/licenses/CDDL+GPL-1.1
* or LICENSE.txt. See the License for the specific
* language governing permissions and limitations under the License.
*
* When distributing the software, include this License Header Notice in each
* file and include the License file at LICENSE.txt.
*
* GPL Classpath Exception:
* Oracle designates this particular file as subject to the "Classpath"
* exception as provided by Oracle in the GPL Version 2 section of the License
* file that accompanied this code.
*
* Modifications:
* If applicable, add the following below the License Header, with the fields
* enclosed by brackets [] replaced by your own identifying information:
* "Portions Copyright [year] [name of copyright owner]"
*
* Contributor(s):
* If you wish your version of this file to be governed by only the CDDL or
* only the GPL Version 2, indicate your decision by adding "[Contributor]
* elects to include this software in this distribution under the [CDDL or GPL
* Version 2] license." If you don't indicate a single choice of license, a
* recipient has the option to distribute your version of this file under
* either the CDDL, the GPL Version 2 or to extend the choice of license to
* its licensees as provided above. However, if you add GPL Version 2 code
* and therefore, elected the GPL Version 2 license, then the option applies
* only if the new code is made subject to such option by the copyright
* holder.
*/
package javax.json;
import java.io.Serializable;
/**
* Private implementation of {@link JsonValue} for simple {@link ValueType}s
* allowing their usage in constants which are better to implement {@link Serializable}.
*
* @author Lukas Jungmann
*/
final class JsonValueImpl implements JsonValue, Serializable {
private final ValueType valueType;
JsonValueImpl(ValueType valueType) {
this.valueType = valueType;
}
/**
* Returns the value type of this JSON value.
*
* @return JSON value type
*/
@Override
public ValueType getValueType() {
return valueType;
}
/**
* Compares the specified object with this {@link JsonValue}
* object for equality. Returns {@code true} if and only if the
* specified object is also a JsonValue, and their
* {@link #getValueType()} objects are <i>equal</i>.
*
* @param obj the object to be compared for equality with this JsonValue
* @return {@code true} if the specified object is equal to this
* JsonValue
*/
@Override
public boolean equals(Object obj) {
if (this == obj) {
return true;
}
if (obj instanceof JsonValue) {
return getValueType().equals(((JsonValue) obj).getValueType());
}
return false;
}
/**
* Returns the hash code value for this {@link JsonValue} object.
* The hash code of the {@link JsonValue} object is defined to be
* its {@link #getValueType()} object's hash code.
*
* @return the hash code value for this {@link JsonValue} object
*/
@Override
public int hashCode() {
return valueType.hashCode();
}
@Override
public String toString() {
return valueType.name().toLowerCase();
}
}