/*
 * Copyright 2017-2022  Koordinierungsstelle für IT-Standards (KoSIT)
 *
 * 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.
 */

package de.kosit.validationtool.api;

import java.io.IOException;

import javax.xml.transform.Source;

/**
 * An input for the validator.
 *
 * @author apenski
 */

public interface Input {

    /**
     * The name of the input for document identification
     * 
     * @return the name
     */
    String getName();

    /**
     * The hashcode for document identification
     * 
     * @return the computed hashcode
     */
    byte[] getHashCode();

    /**
     * The digest algorithm used for computing the {@link #getHashCode()}
     * 
     * @return the name of the digest algorith
     */
    String getDigestAlgorithm();

    /**
     * Creates a new {@link Source } for this input which carries the actual data
     * 
     * @return an open {@link Source}
     * @throws IOException on I/O while opening the source
     */
    Source getSource() throws IOException;

}