/**
    *    Copyright 2006-2015 the original author or authors.
    *
    *    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.mybatis.generator.codegen.mybatis3.xmlmapper.elements;
  
  import org.mybatis.generator.api.IntrospectedColumn;
  import org.mybatis.generator.api.dom.xml.Attribute;
  import org.mybatis.generator.api.dom.xml.TextElement;
  import org.mybatis.generator.api.dom.xml.XmlElement;
  import org.mybatis.generator.codegen.mybatis3.MyBatis3FormattingUtilities;
  
  /**
   * 
   * @author Jeff Butler
   * 
   */
  public class DeleteByPrimaryKeyElementGenerator extends
          AbstractXmlElementGenerator {
  
      private boolean isSimple;
      
      public DeleteByPrimaryKeyElementGenerator(boolean isSimple) {
          super();
          this.isSimple = isSimple;
      }
  
      @Override
      public void addElements(XmlElement parentElement) {
          XmlElement answer = new XmlElement("delete"); //$NON-NLS-1$
  
          answer.addAttribute(new Attribute(
                  "id", introspectedTable.getDeleteByPrimaryKeyStatementId())); //$NON-NLS-1$
          String parameterClass;
          if (!isSimple && introspectedTable.getRules().generatePrimaryKeyClass()) {
              parameterClass = introspectedTable.getPrimaryKeyType();
          } else {
              // PK fields are in the base class. If more than on PK
              // field, then they are coming in a map.
              if (introspectedTable.getPrimaryKeyColumns().size() > 1) {
                  parameterClass = "map"; //$NON-NLS-1$
              } else {
                  parameterClass = introspectedTable.getPrimaryKeyColumns()
                          .get(0).getFullyQualifiedJavaType().toString();
              }
          }
          answer.addAttribute(new Attribute("parameterType", //$NON-NLS-1$
                  parameterClass));
  
          context.getCommentGenerator().addComment(answer);
  
          StringBuilder sb = new StringBuilder();
          sb.append("delete from "); //$NON-NLS-1$
          sb.append(introspectedTable.getFullyQualifiedTableNameAtRuntime());
          answer.addElement(new TextElement(sb.toString()));
  
          boolean and = false;
          for (IntrospectedColumn introspectedColumn : introspectedTable
                  .getPrimaryKeyColumns()) {
              sb.setLength(0);
              if (and) {
                  sb.append("  and "); //$NON-NLS-1$
              } else {
                  sb.append("where "); //$NON-NLS-1$
                  and = true;
              }
  
              sb.append(MyBatis3FormattingUtilities
                      .getEscapedColumnName(introspectedColumn));
              sb.append(" = "); //$NON-NLS-1$
              sb.append(MyBatis3FormattingUtilities
                      .getParameterClause(introspectedColumn));
              answer.addElement(new TextElement(sb.toString()));
          }
  
          if (context.getPlugins()
                  .sqlMapDeleteByPrimaryKeyElementGenerated(answer,
                          introspectedTable)) {
              parentElement.addElement(answer);
          }
      }
  }