Modality.java

/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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 org.apache.tika.parser.inference;

/** What an engine is shown for a unit, and so what a vector stands for. */
public enum Modality {
    TEXT, VISUAL, AUDIO;

    /** The one modality an input kind implies; null for MEDIA, whose bindings must say. */
    public static Modality implied(InputKind kind) {
        switch (kind) {
            case TEXT:
                return TEXT;
            case IMAGES:
            case PAGES:
                return VISUAL;
            default:
                return null;
        }
    }
}