/*
 * 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.shardingsphere.core.rewrite.placeholder;

import com.google.common.base.Optional;
import lombok.Getter;
import lombok.RequiredArgsConstructor;

/**
 * Aggregation distinct placeholder for rewrite.
 *
 * @author panjuan
 */
@RequiredArgsConstructor
@Getter
public final class AggregationDistinctPlaceholder implements ShardingPlaceholder {
    
    private final String columnName;
    
    private final Optional<String> alias;
    
    @Override
    public String toString() {
        return alias.isPresent() ? columnName + " AS " + alias.get() : columnName;
    }
}

@@ -861,48 +861,8 @@
 r;%0A%0A
-import com.google.common.base.Optional;%0A
 impo
@@ -1183,24 +1183,14 @@
 nal 
-Optional%3C
 String
-%3E
  ali
@@ -1262,25 +1262,21 @@
 urn 
-alias.isPresent()
+null != alias
  ? c
@@ -1305,14 +1305,8 @@
 lias
-.get()
  : c

modify toString()