move it

sharding-core/src/main/java/io/shardingsphere/core/keygen/generator/KeyGenerator.java

+/*
+ * Copyright 2016-2018 shardingsphere.io.
+ * <p>
+ * 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.
+ * </p>
+ */
+
+package io.shardingsphere.core.keygen.generator;
+
+import java.util.Properties;
+
+/**
+ * Key generator interface.
+ *
+ * @author zhangliang
+ * @author panjuan
+ */
+public interface KeyGenerator {
+    
+    /**
+     * Generate key.
+     * 
+     * @return generated key
+     */
+    Comparable<?> generateKey();
+    
+    /**
+     * Get properties.
+     * 
+     * @return The properties of key generator
+     */
+    Properties getProperties();
+    
+    /**
+     * Set Properties.
+     * 
+     * @param properties properties
+     */
+    void setProperties(Properties properties);
+}