javax.json.JsonPointer Maven / Gradle / Ivy

Go to download
Show more of this group Show more artifacts with this name
Show all versions of wildfly-client-all
This artifact provides a single jar that contains all classes required to use remote Jakarta Enterprise Beans and Jakarta Messaging, including all dependencies. It is intended for use by those not using maven, maven users should just import the Jakarta Enterprise Beans and Jakarta Messaging BOM's instead (shaded JAR's cause lots of problems with maven, as it is very easy to inadvertently end up with different versions on classes on the class path).
There is a newer version: 35.0.0.Final
Show newest version
/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *
 * Copyright (c) 2015-2017 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;

/**
 * This interface represents an immutable implementation of a JSON Pointer
 * as defined by RFC 6901.
 * 
 *  A JSON Pointer, when applied to a target {@link JsonValue},
 * defines a reference location in the target.
 *  An empty JSON Pointer string defines a reference to the target itself.
 *  If the JSON Pointer string is non-empty, it must be a sequence
 * of '/' prefixed tokens, and the target must either be a {@link JsonArray}
 * or {@link JsonObject}. If the target is a {@code JsonArray}, the pointer
 * defines a reference to an array element, and the last token specifies the index.
 * If the target is a {@link JsonObject}, the pointer defines a reference to a
 * name/value pair, and the last token specifies the name.
 * 
 *  The method {@link #getValue getValue()} returns the referenced value.
 * Methods {@link #add add()}, {@link #replace replace()},
 * and {@link #remove remove()} execute operations specified in
 * RFC 6902. 
 *
 * @see RFC 6901
 * @see RFC 6902
 *
 * @since 1.1
 */
public interface JsonPointer {

    /**
     * Adds or replaces a value at the referenced location in the specified
     * {@code target} with the specified {@code value}.
     * 
     * If the reference is the target (empty JSON Pointer string),
     * the specified {@code value}, which must be the same type as
     * specified {@code target}, is returned.
     * If the reference is an array element, the specified {@code value} is inserted
     * into the array, at the referenced index. The value currently at that location, and
     * any subsequent values, are shifted to the right (adds one to the indices).
     * Index starts with 0. If the reference is specified with a "-", or if the
     * index is equal to the size of the array, the value is appended to the array.
     * If the reference is a name/value pair of a {@code JsonObject}, and the
     * referenced value exists, the value is replaced by the specified {@code value}.
     * If the value does not exist, a new name/value pair is added to the object.
     * 
     *
     * @param  the target type, must be a subtype of {@link JsonValue}
     * @param target the target referenced by this {@code JsonPointer}
     * @param value the value to be added
     * @return the transformed {@code target} after the value is added.
     * @throws NullPointerException if {@code target} is {@code null}
     * @throws JsonException if the reference is an array element and
     * the index is out of range ({@code index < 0 || index > array size}),
     * or if the pointer contains references to non-existing objects or arrays.
     */
     T add(T target, JsonValue value);

    /**
     * Removes the value at the reference location in the specified {@code target}.
     *
     * @param  the target type, must be a subtype of {@link JsonValue}
     * @param target the target referenced by this {@code JsonPointer}
     * @return the transformed {@code target} after the value is removed.
     * @throws NullPointerException if {@code target} is {@code null}
     * @throws JsonException if the referenced value does not exist,
     *    or if the reference is the target.
     */
     T remove(T target);

    /**
     * Replaces the value at the referenced location in the specified
     * {@code target} with the specified {@code value}.
     *
     * @param  the target type, must be a subtype of {@link JsonValue}
     * @param target the target referenced by this {@code JsonPointer}
     * @param value the value to be stored at the referenced location
     * @return the transformed {@code target} after the value is replaced.
     * @throws NullPointerException if {@code target} is {@code null}
     * @throws JsonException if the referenced value does not exist,
     *    or if the reference is the target.
     */
     T replace(T target, JsonValue value);

    /**
     * Returns {@code true} if there is a value at the referenced location in the specified {@code target}.
     *
     * @param target the target referenced by this {@code JsonPointer}
     * @return {@code true} if this pointer points to a value in a specified {@code target}.
     */
    boolean containsValue(JsonStructure target);

    /**
     * Returns the value at the referenced location in the specified {@code target}.
     *
     * @param target the target referenced by this {@code JsonPointer}
     * @return the referenced value in the target.
     * @throws NullPointerException if {@code target} is null
     * @throws JsonException if the referenced value does not exist
     */
    JsonValue getValue(JsonStructure target);
}