org.apache.tika.parser.mp3.CompositeTagHandler Maven / Gradle / Ivy
/*
* 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.mp3;
import java.util.Collections;
import java.util.List;
/**
* Takes an array of {@link ID3Tags} in preference order, and when asked for
* a given tag, will return it from the first {@link ID3Tags} that has it.
*/
public class CompositeTagHandler implements ID3Tags {
private ID3Tags[] tags;
public CompositeTagHandler(ID3Tags[] tags) {
this.tags = tags;
}
public boolean getTagsPresent() {
for (ID3Tags tag : tags) {
if (tag.getTagsPresent()) {
return true;
}
}
return false;
}
public String getTitle() {
for (ID3Tags tag : tags) {
if (tag.getTitle() != null) {
return tag.getTitle();
}
}
return null;
}
public String getArtist() {
for (ID3Tags tag : tags) {
if (tag.getArtist() != null) {
return tag.getArtist();
}
}
return null;
}
public String getAlbum() {
for (ID3Tags tag : tags) {
if (tag.getAlbum() != null) {
return tag.getAlbum();
}
}
return null;
}
public String getComposer() {
for (ID3Tags tag : tags) {
if (tag.getComposer() != null) {
return tag.getComposer();
}
}
return null;
}
public String getYear() {
for (ID3Tags tag : tags) {
if (tag.getYear() != null) {
return tag.getYear();
}
}
return null;
}
public List getComments() {
for (ID3Tags tag : tags) {
List comments = tag.getComments();
if (comments != null && comments.size() > 0) {
return comments;
}
}
return Collections.emptyList();
}
public String getGenre() {
for (ID3Tags tag : tags) {
if (tag.getGenre() != null) {
return tag.getGenre();
}
}
return null;
}
public String getTrackNumber() {
for (ID3Tags tag : tags) {
if (tag.getTrackNumber() != null) {
return tag.getTrackNumber();
}
}
return null;
}
}