code: /**
   * This file is part of Eclipse Steady.
   *
   * 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
   *
   *     http://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.
   *
   * SPDX-License-Identifier: Apache-2.0
   * SPDX-FileCopyrightText: Copyright (c) 2018-2020 SAP SE or an SAP affiliate company and Eclipse Steady contributors
   */
  package org.eclipse.steady.java;
  
  import org.eclipse.steady.ConstructId;
  
  /**
   * Identifies a Java package by its fully qualified name.
   */
  public class JavaPackageId extends JavaId {
  
    /**
     * The default package has an empty string as qualified name. It is used
     * when working with classes, interfaces or enums that do not belong to
     * a package.
     */
    public static final JavaPackageId DEFAULT_PACKAGE = new JavaPackageId(null);
  
    /** Fully qualified package identifier. */
    protected String packageId = null;
    /**
     * <p>Constructor for JavaPackageId.</p>
     *
     * @param _qualified_name a {@link java.lang.String} object.
     */
    public JavaPackageId(String _qualified_name) {
      super(JavaId.Type.PACKAGE);
      this.packageId = (_qualified_name == null ? "" : _qualified_name);
    }
  
    /**
     * Returns the complete package name, including parent packages.
     *
     * @return a {@link java.lang.String} object.
     */
    public String getQualifiedName() {
      return this.packageId;
    }
  
    /**
     * For packages, the method returns the qualified name.
     *
     * @return a {@link java.lang.String} object.
     */
    public String getName() {
      return this.getQualifiedName();
    }
  
    /**
     * For packages, the method returns the qualified name.
     *
     * @return a {@link java.lang.String} object.
     */
    public String getSimpleName() {
      return this.getQualifiedName();
    }
  
    /**
     * For packages, this method always returns null.
     *
     * @return a {@link org.eclipse.steady.ConstructId} object.
     */
    public ConstructId getDefinitionContext() {
      return null;
    }
  
    /**
     * For packages, this method always returns null.
     *
     * @return a {@link org.eclipse.steady.java.JavaPackageId} object.
     */
    public JavaPackageId getJavaPackageId() {
      return null;
    }
  
    /**
     * Returns true if the given {@link JavaPackageId} corresponds to the {@link JavaPackageId#DEFAULT_PACKAGE}, false otherwise.
     *
     * @param _pid a {@link org.eclipse.steady.java.JavaPackageId} object.
     * @return a boolean.
     */
    public static final boolean isDefaultPackage(JavaPackageId _pid) {
      return DEFAULT_PACKAGE.equals(_pid);
    }
  }
  