/**
    * Copyright 2011 The Kuali Foundation Licensed under the
    * Educational Community 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.osedu.org/licenses/ECL-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.kuali.common.impex.schema.impl.mysql;
  
  import java.util.ArrayList;
  import java.util.List;
  
  import org.kuali.common.impex.ProducerUtils;
  import org.kuali.common.impex.model.View;
  import org.kuali.common.util.CollectionUtils;
  
  public class MySqlViewSqlProducer {
  
      protected static final String DROP_PREFIX = "DROP VIEW IF EXISTS ";
  
      protected static final String CREATE_PREFIX = "CREATE VIEW ";
      protected static final String CREATE_AS_KEYWORD = " AS\n";
  
  
      public List<String> getViewsSql(List<View> views) {
          List<String> results = new ArrayList<String>();
  
          for (View view : CollectionUtils.toEmptyList(views)) {
              results.addAll(generateStatementsForView(view));
          }
  
          return results;
      }
  
      protected List<String> generateStatementsForView(View view) {
          List<String> results = new ArrayList<String>(2);
  
          StringBuilder sb = new StringBuilder();
  
          sb.append(DROP_PREFIX);
          sb.append(view.getName());
          sb.append(ProducerUtils.NEWLINE);
  
          results.add(sb.toString());
          sb = new StringBuilder();
  
          sb.append(CREATE_PREFIX);
          sb.append(view.getName());
          sb.append(CREATE_AS_KEYWORD);
          sb.append(view.getQueryString());
          sb.append(ProducerUtils.NEWLINE);
          results.add(sb.toString());
  
          return results;
      }
  }