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.sign;
  
  import java.io.File;
  
  import org.eclipse.steady.Construct;
  import org.eclipse.steady.shared.json.model.ConstructId;
  
  /**
   * <p>SignatureFactory interface.</p>
   */
  public interface SignatureFactory {
  
    /**
     * Returns true if the factory can compute a signature for the given {@link ConstructId}, false otherwise.
     *
     * @param _id a {@link org.eclipse.steady.shared.json.model.ConstructId} object.
     * @return a boolean.
     */
    public boolean isSupportedConstructId(ConstructId _id);
  
    /**
     * Creates a {@link Signature} of the body of the given {@link Construct}.
     *
     * @param _construct a {@link org.eclipse.steady.Construct} object.
     * @return a {@link org.eclipse.steady.sign.Signature} object.
     */
    public Signature createSignature(Construct _construct);
  
    /**
     * Creates a {@link Signature} of the given {@link ConstructId} on the basis of the given file.
     *
     * @param _cid a {@link org.eclipse.steady.shared.json.model.ConstructId} object.
     * @param _file a {@link java.io.File} object.
     * @return a {@link org.eclipse.steady.sign.Signature} object.
     */
    public Signature createSignature(ConstructId _cid, File _file);
  
    /**
     * <p>computeChange.</p>
     *
     * @param _from a {@link org.eclipse.steady.Construct} object.
     * @param _to a {@link org.eclipse.steady.Construct} object.
     * @return a {@link org.eclipse.steady.sign.SignatureChange} object.
     */
    public SignatureChange computeChange(Construct _from, Construct _to);
  }
  