content: /*
   * 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 com.github.jobson.utils;
  
  import net.sf.jsqlparser.statement.Statement;
  import net.sf.jsqlparser.util.TablesNamesFinder;
  
  import java.util.HashSet;
  import java.util.Set;
  
  public final class SQLUtils {
      public static Set<String> tableRefsIn(Statement stmt) {
          final TablesNamesFinder tablesNamesFinder = new TablesNamesFinder();
          return new HashSet<>(tablesNamesFinder.getTableList(stmt));
      }
  
      public static Set<String> columnRefsIn(Statement stmt) {
          final AllColumnRefsFinder allColumnRefsFinder = new AllColumnRefsFinder();
          return allColumnRefsFinder.getAllColumnNamesThatAppearIn(stmt);
      }
  }
  