/**
* 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.language.translate;
import com.fasterxml.jackson.databind.JsonNode;
import com.fasterxml.jackson.databind.ObjectMapper;
import org.apache.cxf.jaxrs.client.WebClient;
import org.apache.tika.exception.TikaException;
import org.apache.tika.language.LanguageIdentifier;
import org.apache.tika.language.LanguageProfile;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.Response;
import java.io.BufferedReader;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.util.Properties;
/**
* An implementation of a REST client for the
* <a href="https://developer.lingo24.com/premium-machine-translation-api">Premium MT API v1</a>.
* You can sign up for an access plan online on the <a href="https://developer.lingo24.com/plans">Lingo24 Developer Portal</a>
* and set your Application's User Key in the <code>translator.lingo24.properties</code> file.
*/
public class Lingo24Translator implements Translator {
private static final String LINGO24_TRANSLATE_URL_BASE = "https://api.lingo24.com/mt/v1/translate";
private static final String DEFAULT_KEY = "dummy-key";
private WebClient client;
private String userKey;
private boolean isAvailable;
public Lingo24Translator() {
this.client = WebClient.create(LINGO24_TRANSLATE_URL_BASE);
this.isAvailable = true;
Properties config = new Properties();
try {
config.load(Lingo24Translator.class
.getClassLoader()
.getResourceAsStream(
"org/apache/tika/language/translate/translator.lingo24.properties"));
this.userKey = config.getProperty("translator.user-key");
if (this.userKey.equals(DEFAULT_KEY))
this.isAvailable = false;
} catch (Exception e) {
e.printStackTrace();
isAvailable = false;
}
}
@Override
public String translate(String text, String sourceLanguage,
String targetLanguage) throws Exception {
if (!this.isAvailable)
return text;
Response response = client.accept(MediaType.APPLICATION_JSON)
.query("user_key", userKey).query("source", sourceLanguage)
.query("target", targetLanguage).query("q", text).get();
BufferedReader reader = new BufferedReader(new InputStreamReader(
(InputStream) response.getEntity(), "UTF-8"));
String line = null;
StringBuffer responseText = new StringBuffer();
while ((line = reader.readLine()) != null) {
responseText.append(line);
}
ObjectMapper mapper = new ObjectMapper();
JsonNode jsonResp = mapper.readTree(responseText.toString());
if (jsonResp.findValuesAsText("errors").isEmpty()) {
return jsonResp.findValuesAsText("translation").get(0);
} else {
throw new TikaException(jsonResp.findValue("errors").get(0).asText());
}
}
@Override
public String translate(String text, String targetLanguage)
throws Exception {
if (!this.isAvailable)
return text;
LanguageIdentifier language = new LanguageIdentifier(
new LanguageProfile(text));
String sourceLanguage = language.getLanguage();
return translate(text, sourceLanguage, targetLanguage);
}
@Override
public boolean isAvailable() {
return this.isAvailable;
}
}