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diff --git a/wso2/baseservice-i18n/src/main/java/org/openo/baseservice/i18n/I18n.java b/wso2/baseservice-i18n/src/main/java/org/openo/baseservice/i18n/I18n.java
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+++ b/wso2/baseservice-i18n/src/main/java/org/openo/baseservice/i18n/I18n.java
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+/**
+ * Copyright 2017 ZTE Corporation.
+ *
+ * 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 org.openo.baseservice.i18n;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import java.util.HashMap;
+import java.util.Locale;
+import java.util.Map;
+import java.util.Optional;
+
+public interface I18n {
+  static final Logger logger = LoggerFactory.getLogger(I18n.class);
+
+  /**
+   * Get the corresponding examples of international documents (all languages), <br>
+   * 
+   * for the above example topology (for example, the Chinese definition: topo-i18n-zh-CN.json,
+   * English definition Topo -i18n-en-US.json), into the reference into the "TOPO" can be <br>
+   * 
+   * (i.e. except "-i18n-*.json" after the exact match).
+   * 
+   * @param i18nFilePrefix
+   * @return Optional<I18n>
+   */
+  public static Optional<I18n> getInstance(String i18nFilePrefix) {
+    return I18nContainer.getInstance().getI18n(i18nFilePrefix);
+  }
+
+  /**
+   * According to key, the internationalization of all languages is described (Map<locale,value>)
+   * 
+   * @param labelKey key
+   * @return Map<locale,value>
+   */
+  public Map<String, String> getLabelValues(String labelKey);
+
+  /**
+   * According to key, the internationalization of all languages is described
+   * 
+   * @param labelKey
+   * @param theLocale
+   * @return
+   */
+  public String getLabelValue(String labelKey, Locale theLocale);
+
+  /**
+   * According to key, the internationalization of all languages is described
+   * 
+   * @param labelKey
+   * @param theLocale
+   * @param arguments
+   * @return
+   */
+  public String getLabelValue(String labelKey, Locale theLocale, String[] arguments);
+
+  /**
+   * Replace the placeholder that is defined in the internationalization description, as shown in
+   * the following example, <br>
+   * 
+   * {0} represents first bits, which will be replaced by a specific number of days. : <br>
+   * 
+   * {"col_dir_file_time_table": "save days {0} days"}
+   * 
+   * @param labelKey
+   * @param arguments
+   * @return Map<locale,value>
+   */
+  public Map<String, String> getLabelValues(String labelKey, String[] arguments);
+
+  /**
+   * According to the key to get all the international description of the language, and the results
+   * will be combined into a Json string, used in the log module scene, <br>
+   * 
+   * it is necessary to store all of the international information or transfer, and finally show the
+   * time according to locale to choose the appropriate value. <br>
+   * 
+   * (here in order to form similar to read, plus a newline) <br>
+   * {"zh_CN":"统一公共应用","en_US":" Unified common application ","ru_RU":"Единый общий приложений"}
+   * 
+   * @param labelKey key
+   * @return
+   */
+  public String getCanonicalLabelValues(String labelKey);
+
+  /**
+   * With the use of getCanonicalLabelValues interface, from all the international description of
+   * the combination of string and specific language corresponding to the international string. The
+   * return value of the getCanonicalLabelValues method
+   * 
+   * @param values
+   * @param theLocale
+   * @return value
+   */
+  public static String getValuefromCanonicalValues(String values, Locale theLocale) {
+    try {
+      @SuppressWarnings("unchecked")
+      HashMap<String, String> map = I18nJsonUtil.getInstance().readFromJson(values, HashMap.class);
+
+      return map.get(I18nLocaleTransfer.transfer(theLocale, map.keySet()));
+    } catch (Exception e) {
+      logger.error("get i18n value failed by locale:" + theLocale + " from " + values, e);
+      return null;
+    }
+  }
+
+  /**
+   * According to the value to find the corresponding key, such as a module in accordance with
+   * international content filtering, search, database storage is key, then the front pass query is
+   * a kind of language corresponding to the value, to get the corresponding international key to
+   * the database query.
+   *
+   * @param value
+   * @return
+   */
+  public String getKeyFromValue(String value);
+
+}