/**
 *    Copyright ${license.git.copyrightYears} 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.apache.ibatis.executor;

import java.util.ArrayList;
import java.util.Date;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import org.apache.ibatis.builder.StaticSqlSource;
import org.apache.ibatis.cache.Cache;
import org.apache.ibatis.cache.decorators.LoggingCache;
import org.apache.ibatis.cache.decorators.ScheduledCache;
import org.apache.ibatis.cache.decorators.SerializedCache;
import org.apache.ibatis.cache.decorators.SynchronizedCache;
import org.apache.ibatis.cache.impl.PerpetualCache;
import org.apache.ibatis.domain.blog.Author;
import org.apache.ibatis.domain.blog.Blog;
import org.apache.ibatis.domain.blog.Comment;
import org.apache.ibatis.domain.blog.Post;
import org.apache.ibatis.domain.blog.Section;
import org.apache.ibatis.domain.blog.Tag;
import org.apache.ibatis.executor.keygen.Jdbc3KeyGenerator;
import org.apache.ibatis.executor.keygen.SelectKeyGenerator;
import org.apache.ibatis.mapping.Discriminator;
import org.apache.ibatis.mapping.MappedStatement;
import org.apache.ibatis.mapping.ParameterMap;
import org.apache.ibatis.mapping.ParameterMapping;
import org.apache.ibatis.mapping.ParameterMode;
import org.apache.ibatis.mapping.ResultFlag;
import org.apache.ibatis.mapping.ResultMap;
import org.apache.ibatis.mapping.ResultMapping;
import org.apache.ibatis.mapping.SqlCommandType;
import org.apache.ibatis.mapping.SqlSource;
import org.apache.ibatis.mapping.StatementType;
import org.apache.ibatis.scripting.xmltags.DynamicSqlSource;
import org.apache.ibatis.scripting.xmltags.TextSqlNode;
import org.apache.ibatis.session.Configuration;
import org.apache.ibatis.type.JdbcType;
import org.apache.ibatis.type.TypeHandlerRegistry;

class ExecutorTestHelper {

  static final Cache authorCache;

  static {
    authorCache =
        new SynchronizedCache(
            new SerializedCache(
                new LoggingCache(
                    new ScheduledCache(
                        new PerpetualCache("author_cache")))));

  }

  static MappedStatement prepareInsertAuthorMappedStatement(final Configuration config) {
    final TypeHandlerRegistry registry = config.getTypeHandlerRegistry();
    return new MappedStatement.Builder(config, "insertAuthor", new StaticSqlSource(config,"INSERT INTO author (id,username,password,email,bio,favourite_section) values(?,?,?,?,?,?)"), SqlCommandType.INSERT)
        .parameterMap(
            new ParameterMap.Builder(
                config, "defaultParameterMap", Author.class,
                new ArrayList<ParameterMapping>() {
                  {
                    add(new ParameterMapping.Builder(config, "id", registry.getTypeHandler(int.class)).build());
                    add(new ParameterMapping.Builder(config, "username", registry.getTypeHandler(String.class)).build());
                    add(new ParameterMapping.Builder(config, "password", registry.getTypeHandler(String.class)).build());
                    add(new ParameterMapping.Builder(config, "email", registry.getTypeHandler(String.class)).build());
                    add(new ParameterMapping.Builder(config, "bio", registry.getTypeHandler(String.class)).jdbcType(JdbcType.VARCHAR).build());
                    add(new ParameterMapping.Builder(config, "favouriteSection", registry.getTypeHandler(Section.class)).jdbcType(JdbcType.VARCHAR).build());
                  }
                }).build())
        .cache(authorCache).build();
  }

  static MappedStatement prepareInsertAuthorMappedStatementWithAutoKey(final Configuration config) {
    final TypeHandlerRegistry registry = config.getTypeHandlerRegistry();
    return new MappedStatement.Builder(config, "insertAuthor", new StaticSqlSource(config,"INSERT INTO author (username,password,email,bio,favourite_section) values(?,?,?,?,?)"), SqlCommandType.INSERT)
        .parameterMap(
            new ParameterMap.Builder(config, "defaultParameterMap", Author.class, new ArrayList<ParameterMapping>() {
              {
                add(new ParameterMapping.Builder(config, "username", registry.getTypeHandler(String.class)).build());
                add(new ParameterMapping.Builder(config, "password", registry.getTypeHandler(String.class)).build());
                add(new ParameterMapping.Builder(config, "email", registry.getTypeHandler(String.class)).build());
                add(new ParameterMapping.Builder(config, "bio", registry.getTypeHandler(String.class)).jdbcType(JdbcType.VARCHAR).build());
                add(new ParameterMapping.Builder(config, "favouriteSection", registry.getTypeHandler(Section.class)).jdbcType(JdbcType.VARCHAR).build());
              }
            }).build())
        .cache(authorCache)
        .keyGenerator(Jdbc3KeyGenerator.INSTANCE)
        .keyProperty("id")
        .build();
  }

  static MappedStatement prepareInsertAuthorProc(final Configuration config) {
    final TypeHandlerRegistry registry = config.getTypeHandlerRegistry();
    return new MappedStatement.Builder(config, "insertAuthorProc", new StaticSqlSource(config,"{call insertAuthor(?,?,?,?)}"), SqlCommandType.INSERT)
        .parameterMap(new ParameterMap.Builder(config, "defaultParameterMap", Author.class,
            new ArrayList<ParameterMapping>() {
              {
                add(new ParameterMapping.Builder(config, "id", registry.getTypeHandler(int.class)).build());
                add(new ParameterMapping.Builder(config, "username", registry.getTypeHandler(String.class)).build());
                add(new ParameterMapping.Builder(config, "password", registry.getTypeHandler(String.class)).build());
                add(new ParameterMapping.Builder(config, "email", registry.getTypeHandler(String.class)).build());
              }
            }).build())
        .cache(authorCache).build();
  }

  static MappedStatement prepareUpdateAuthorMappedStatement(final Configuration config) {
    final TypeHandlerRegistry registry = config.getTypeHandlerRegistry();
    return new MappedStatement.Builder(config, "updateAuthor", new StaticSqlSource(config,"UPDATE author SET username = ?, password = ?, email = ?, bio = ? WHERE id = ?"), SqlCommandType.UPDATE)
        .parameterMap(new ParameterMap.Builder(config, "defaultParameterMap", Author.class,
            new ArrayList<ParameterMapping>() {
              {
                add(new ParameterMapping.Builder(config, "username", registry.getTypeHandler(String.class)).build());
                add(new ParameterMapping.Builder(config, "password", registry.getTypeHandler(String.class)).build());
                add(new ParameterMapping.Builder(config, "email", registry.getTypeHandler(String.class)).build());
                add(new ParameterMapping.Builder(config, "bio", registry.getTypeHandler(String.class)).jdbcType(JdbcType.VARCHAR).build());
                add(new ParameterMapping.Builder(config, "id", registry.getTypeHandler(int.class)).build());
              }
            }).build())
        .cache(authorCache).build();
  }

  static MappedStatement prepareDeleteAuthorMappedStatement(final Configuration config) {
    final TypeHandlerRegistry registry = config.getTypeHandlerRegistry();
    return new MappedStatement.Builder(config, "deleteAuthor", new StaticSqlSource(config,"DELETE FROM author WHERE id = ?"), SqlCommandType.DELETE)
        .parameterMap(new ParameterMap.Builder(config, "defaultParameterMap", Author.class,
            new ArrayList<ParameterMapping>() {
              {
                add(new ParameterMapping.Builder(config, "id", registry.getTypeHandler(int.class)).build());
              }
            }).build())
        .cache(authorCache)
        .build();
  }

  static MappedStatement prepareSelectOneAuthorMappedStatement(final Configuration config) {
    final TypeHandlerRegistry registry = config.getTypeHandlerRegistry();

    final ResultMap rm = new ResultMap.Builder(config, "defaultResultMap", Author.class, new
        ArrayList<ResultMapping>() {
          {
            add(new ResultMapping.Builder(config, "id", "id", registry.getTypeHandler(int.class)).build());
            add(new ResultMapping.Builder(config, "username", "username", registry.getTypeHandler(String.class)).build());
            add(new ResultMapping.Builder(config, "password", "password", registry.getTypeHandler(String.class)).build());
            add(new ResultMapping.Builder(config, "email", "email", registry.getTypeHandler(String.class)).build());
            add(new ResultMapping.Builder(config, "bio", "bio", registry.getTypeHandler(String.class)).build());
            add(new ResultMapping.Builder(config, "favouriteSection", "favourite_section", registry.getTypeHandler(Section.class)).build());
          }
        }).build();

    return new MappedStatement.Builder(config, "selectAuthor", new StaticSqlSource(config,"SELECT * FROM author WHERE id = ?"), SqlCommandType.SELECT)
        .parameterMap(new ParameterMap.Builder(config, "defaultParameterMap", Author.class,
            new ArrayList<ParameterMapping>() {
              {
                add(new ParameterMapping.Builder(config, "id", registry.getTypeHandler(int.class)).build());
              }
            }).build())
        .resultMaps(new ArrayList<ResultMap>() {
          {
            add(rm);
          }
        })
        .cache(authorCache).build();
  }

  static MappedStatement prepareSelectAllAuthorsAutoMappedStatement(final Configuration config) {
    final TypeHandlerRegistry registry = config.getTypeHandlerRegistry();
    return new MappedStatement.Builder(config, "selectAuthorAutoMap", new StaticSqlSource(config,"SELECT * FROM author ORDER BY id"), SqlCommandType.SELECT)
        .resultMaps(new ArrayList<ResultMap>() {
          {
            add(new ResultMap.Builder(config, "defaultResultMap", Author.class, new ArrayList<ResultMapping>() {
              {
                add(new ResultMapping.Builder(config, "favouriteSection", "favourite_section", registry.getTypeHandler(Section.class)).build());
                add(new ResultMapping.Builder(config, null, "not_exists", Object.class).build());
              }
            }).build());
          }
        }).fetchSize(1000).timeout(2000).build();
  }

  static MappedStatement prepareSelectOneAuthorMappedStatementWithConstructorResults(final Configuration config) {
    final TypeHandlerRegistry registry = config.getTypeHandlerRegistry();
    return new MappedStatement.Builder(config, "selectAuthor", new StaticSqlSource(config,"SELECT * FROM author WHERE id = ?"), SqlCommandType.SELECT)
        .parameterMap(new ParameterMap.Builder(config, "defaultParameterMap", Author.class,
            new ArrayList<ParameterMapping>() {
              {
                add(new ParameterMapping.Builder(config, "id", registry.getTypeHandler(int.class)).build());
              }
            }).build())
        .resultMaps(new ArrayList<ResultMap>() {
          {
            add(new ResultMap.Builder(config, "defaultResultMap", Author.class, new ArrayList<ResultMapping>() {
              {
                add(new ResultMapping.Builder(config, null, "id", registry.getTypeHandler(Integer.class)).javaType(int.class).flags(new ArrayList<ResultFlag>() {
                  {
                    add(ResultFlag.CONSTRUCTOR);
                  }
                }).build());
                add(new ResultMapping.Builder(config, "username", "username", registry.getTypeHandler(String.class)).build());
                add(new ResultMapping.Builder(config, "password", "password", registry.getTypeHandler(String.class)).build());
                add(new ResultMapping.Builder(config, "email", "email", registry.getTypeHandler(String.class)).build());
                add(new ResultMapping.Builder(config, "bio", "bio", registry.getTypeHandler(String.class)).build());
                add(new ResultMapping.Builder(config, "favouriteSection", "favourite_section", registry.getTypeHandler(Section.class)).build());
              }
            }).build());
          }
        })
        .cache(authorCache)
        .build();
  }

  static MappedStatement prepareSelectTwoSetsOfAuthorsProc(final Configuration config) {
    final TypeHandlerRegistry registry = config.getTypeHandlerRegistry();
    return new MappedStatement.Builder(config, "selectTwoSetsOfAuthors", new StaticSqlSource(config,"{call selectTwoSetsOfAuthors(?,?)}"), SqlCommandType.SELECT)
        .statementType(StatementType.CALLABLE)
        .parameterMap(new ParameterMap.Builder(
            config, "defaultParameterMap", Author.class,
            new ArrayList<ParameterMapping>() {
              {
                add(new ParameterMapping.Builder(config, "id1", registry.getTypeHandler(int.class)).build());
                add(new ParameterMapping.Builder(config, "id2", registry.getTypeHandler(int.class)).build());
              }
            }).build())
        .resultMaps(new ArrayList<ResultMap>() {
          {
            ResultMap map = new ResultMap.Builder(config, "defaultResultMap", Author.class, new ArrayList<ResultMapping>() {
              {
                add(new ResultMapping.Builder(config, "id", "id", registry.getTypeHandler(int.class)).build());
                add(new ResultMapping.Builder(config, "username", "username", registry.getTypeHandler(String.class)).build());
                add(new ResultMapping.Builder(config, "password", "password", registry.getTypeHandler(String.class)).build());
                add(new ResultMapping.Builder(config, "email", "email", registry.getTypeHandler(String.class)).build());
                add(new ResultMapping.Builder(config, "bio", "bio", registry.getTypeHandler(String.class)).build());
              }
            }).build();
            add(map);
            add(map);
          }
        }).build();
  }

  static MappedStatement prepareSelectAuthorViaOutParams(final Configuration config) {
    final TypeHandlerRegistry registry = config.getTypeHandlerRegistry();
    return new MappedStatement.Builder(config, "selectAuthorViaOutParams", new StaticSqlSource(config, "{call selectAuthorViaOutParams(?,?,?,?,?)}"), SqlCommandType.SELECT)
        .statementType(StatementType.CALLABLE)
        .parameterMap(new ParameterMap.Builder(config, "defaultParameterMap", Author.class,
            new ArrayList<ParameterMapping>() {
              {
                add(new ParameterMapping.Builder(config, "id", registry.getTypeHandler(int.class)).build());
                add(new ParameterMapping.Builder(config, "username", registry.getTypeHandler(String.class)).jdbcType(JdbcType.VARCHAR).mode(ParameterMode.OUT).build());
                add(new ParameterMapping.Builder(config, "password", registry.getTypeHandler(String.class)).jdbcType(JdbcType.VARCHAR).mode(ParameterMode.OUT).build());
                add(new ParameterMapping.Builder(config, "email", registry.getTypeHandler(String.class)).jdbcType(JdbcType.VARCHAR).mode(ParameterMode.OUT).build());
                add(new ParameterMapping.Builder(config, "bio", registry.getTypeHandler(String.class)).jdbcType(JdbcType.VARCHAR).mode(ParameterMode.OUT).build());
              }
            }).build())
        .resultMaps(new ArrayList<>())
        .cache(authorCache).build();
  }

  static MappedStatement prepareSelectDiscriminatedPost(final Configuration config) {
    final TypeHandlerRegistry registry = config.getTypeHandlerRegistry();
    final ResultMap discriminatorResultMap = new ResultMap.Builder(config, "postResultMap", HashMap.class, new ArrayList<ResultMapping>() {
      {
        add(new ResultMapping.Builder(config, "subject", "subject", registry.getTypeHandler(String.class)).build());
        add(new ResultMapping.Builder(config, "body", "body", registry.getTypeHandler(String.class)).build());
      }
    }).build();
    config.addResultMap(discriminatorResultMap);
    return new MappedStatement.Builder(config, "selectPosts", new StaticSqlSource(config,"SELECT * FROM post"), SqlCommandType.SELECT)
        .resultMaps(new ArrayList<ResultMap>() {
          {
            add(new ResultMap.Builder(config, "defaultResultMap", HashMap.class, new ArrayList<ResultMapping>() {
              {
                add(new ResultMapping.Builder(config, "id", "id", registry.getTypeHandler(int.class)).build());
                add(new ResultMapping.Builder(config, "blog_id", "blog_id", registry.getTypeHandler(int.class)).build());
              }
            })
                .discriminator(new Discriminator.Builder(
                    config, new ResultMapping.Builder(config, "section", "section", registry.getTypeHandler(String.class)).build(),
                    new HashMap<String, String>() {
                      {
                        put("NEWS", discriminatorResultMap.getId());
                        put("VIDEOS", discriminatorResultMap.getId());
                        put("PODCASTS", discriminatorResultMap.getId());
                        //NEWS left out on purpose.
                      }
                    }).build()).build());

          }
        }).build();
  }

  static MappedStatement createInsertAuthorWithIDof99MappedStatement(final Configuration config) {
    return new MappedStatement.Builder(config, "insertAuthor", new StaticSqlSource(config,"INSERT INTO author (id,username,password,email,bio) values(99,'someone','******','someone@apache.org',null)"), SqlCommandType.INSERT)
        .statementType(StatementType.STATEMENT)
        .parameterMap(new ParameterMap.Builder(config, "defaultParameterMap", Author.class,
            new ArrayList<>()).build())
        .cache(authorCache)
        .build();
  }

  static MappedStatement createSelectAuthorWithIDof99MappedStatement(final Configuration config) {
    final TypeHandlerRegistry registry = config.getTypeHandlerRegistry();
    return new MappedStatement.Builder(config, "selectAuthor", new StaticSqlSource(config,"SELECT * FROM author WHERE id = 99"), SqlCommandType.SELECT)
        .statementType(StatementType.STATEMENT)
        .parameterMap(new ParameterMap.Builder(config, "defaultParameterMap", Author.class, new ArrayList<>()).build())
        .resultMaps(new ArrayList<ResultMap>() {
          {
            add(new ResultMap.Builder(config, "defaultResultMap", Author.class, new ArrayList<ResultMapping>() {
              {
                add(new ResultMapping.Builder(config, "id", "id", registry.getTypeHandler(int.class)).build());
                add(new ResultMapping.Builder(config, "username", "username", registry.getTypeHandler(String.class)).build());
                add(new ResultMapping.Builder(config, "password", "password", registry.getTypeHandler(String.class)).build());
                add(new ResultMapping.Builder(config, "email", "email", registry.getTypeHandler(String.class)).build());
                add(new ResultMapping.Builder(config, "bio", "bio", registry.getTypeHandler(String.class)).build());
              }
            }).build());
          }
        }).build();
  }

  static MappedStatement prepareComplexSelectBlogMappedStatement(final Configuration config) {
    final TypeHandlerRegistry registry = config.getTypeHandlerRegistry();
    final SqlSource sqlSource = new StaticSqlSource(config, "SELECT b.id, b.author_id, b.title, a.username, a.password, a.email, a.bio" +
        " FROM blog b" +
        " INNER JOIN author a ON b.author_id = a.id" +
        " WHERE b.id = ?");
    final ParameterMap parameterMap = new ParameterMap.Builder(config, "defaultParameterMap", int.class,
        new ArrayList<ParameterMapping>() {
          {
            add(new ParameterMapping.Builder(config, "id", registry.getTypeHandler(int.class)).build());
          }
        }).build();
    final ResultMap resultMap = new ResultMap.Builder(config, "defaultResultMap", Blog.class, new ArrayList<ResultMapping>() {
      {
        add(new ResultMapping.Builder(config, "id", "id", registry.getTypeHandler(int.class))
            .flags(new ArrayList<ResultFlag>() {
              {
                add(ResultFlag.ID);
              }
            }).build());
        add(new ResultMapping.Builder(config, "title", "title", registry.getTypeHandler(String.class)).build());
        add(new ResultMapping.Builder(config, "author.id", "author_id", registry.getTypeHandler(int.class)).build());
        add(new ResultMapping.Builder(config, "author.username", "username", registry.getTypeHandler(String.class)).build());
        add(new ResultMapping.Builder(config, "author.password", "password", registry.getTypeHandler(String.class)).build());
        add(new ResultMapping.Builder(config, "author.email", "email", registry.getTypeHandler(String.class)).build());
        add(new ResultMapping.Builder(config, "author.bio", "bio", registry.getTypeHandler(String.class)).build());
        add(new ResultMapping.Builder(config, "posts", "id", registry.getTypeHandler(int.class)).javaType(List.class).nestedQueryId("selectPostsForBlog").build());
      }
    }).build();

    return new MappedStatement.Builder(config, "selectBlogById", sqlSource, SqlCommandType.SELECT)
        .parameterMap(parameterMap)
        .resultMaps(new ArrayList<ResultMap>() {
          {
            add(resultMap);
          }
        }).build();
  }

  static MappedStatement prepareSelectBlogByIdAndAuthor(final Configuration config) {
    final TypeHandlerRegistry registry = config.getTypeHandlerRegistry();
    final SqlSource sqlSource = new StaticSqlSource(config,"SELECT b.id, b.author_id, b.title, a.username, a.password, a.email, a.bio" +
        " FROM blog b" +
        " INNER JOIN author a ON b.author_id = a.id" +
        " WHERE b.id = ? and a.id = ?");
    final ParameterMap parameterMap = new ParameterMap.Builder(config, "defaultParameterMap", Map.class,
        new ArrayList<ParameterMapping>() {
          {
            add(new ParameterMapping.Builder(config, "blogId", registry.getTypeHandler(int.class)).build());
            add(new ParameterMapping.Builder(config, "authorId", registry.getTypeHandler(int.class)).build());
          }
        }).build();
    final ResultMap resultMap = new ResultMap.Builder(config, "defaultResultMap", Blog.class, new ArrayList<ResultMapping>() {
      {
        add(new ResultMapping.Builder(config, "id", "id", registry.getTypeHandler(int.class))
            .flags(new ArrayList<ResultFlag>() {
              {
                add(ResultFlag.ID);
              }
            }).build());
        add(new ResultMapping.Builder(config, "title", "title", registry.getTypeHandler(String.class)).build());
        add(new ResultMapping.Builder(config, "author.id", "author_id", registry.getTypeHandler(int.class)).build());
        add(new ResultMapping.Builder(config, "author.username", "username", registry.getTypeHandler(String.class)).build());
        add(new ResultMapping.Builder(config, "author.password", "password", registry.getTypeHandler(String.class)).build());
        add(new ResultMapping.Builder(config, "author.email", "email", registry.getTypeHandler(String.class)).build());
        add(new ResultMapping.Builder(config, "author.bio", "bio", registry.getTypeHandler(String.class)).build());
        add(new ResultMapping.Builder(config, "posts", "id", registry.getTypeHandler(int.class)).javaType(List.class).nestedQueryId("selectPostsForBlog").build());
      }
    }).build();

    return new MappedStatement.Builder(config, "selectBlogByIdAndAuthor", sqlSource, SqlCommandType.SELECT)
        .parameterMap(parameterMap)
        .resultMaps(new ArrayList<ResultMap>() {
          {
            add(resultMap);
          }
        }).build();

  }

  static MappedStatement prepareSelectPostsForBlogMappedStatement(final Configuration config) {
    final TypeHandlerRegistry registry = config.getTypeHandlerRegistry();
    final SqlSource sqlSource = new StaticSqlSource(config,"SELECT p.id, p.created_on, p.blog_id, p.section, p.subject, p.body, pt.tag_id," +
        " t.name as tag_name, c.id as comment_id, c.name as comment_name, c.comment" +
        " FROM post p" +
        " INNER JOIN post_tag pt ON pt.post_id = p.id" +
        " INNER JOIN tag t ON pt.tag_id = t.id" +
        " LEFT OUTER JOIN comment c ON c.post_id = p.id" +
        " WHERE p.blog_id = ?");
    final ParameterMap parameterMap = new ParameterMap.Builder(config, "defaultParameterMap", Author.class,
        new ArrayList<ParameterMapping>() {
          {
            add(new ParameterMapping.Builder(config, "id", registry.getTypeHandler(int.class)).build());
          }
        }).build();
    final ResultMap tagResultMap = new ResultMap.Builder(config, "tagResultMap", Tag.class, new ArrayList<ResultMapping>() {
      {
        add(new ResultMapping.Builder(config, "id", "tag_id", registry.getTypeHandler(int.class))
            .flags(new ArrayList<ResultFlag>() {
              {
                add(ResultFlag.ID);
              }
            }).build());
        add(new ResultMapping.Builder(config, "name", "tag_name", registry.getTypeHandler(String.class)).build());
      }
    }).build();
    final ResultMap commentResultMap = new ResultMap.Builder(config, "commentResultMap", Comment.class, new ArrayList<ResultMapping>() {
      {
        add(new ResultMapping.Builder(config, "id", "comment_id", registry.getTypeHandler(int.class))
            .flags(new ArrayList<ResultFlag>() {
              {
                add(ResultFlag.ID);
              }
            }).build());
        add(new ResultMapping.Builder(config, "name", "comment_name", registry.getTypeHandler(String.class)).build());
        add(new ResultMapping.Builder(config, "comment", "comment", registry.getTypeHandler(String.class)).build());
      }
    }).build();
    config.addResultMap(tagResultMap);
    config.addResultMap(commentResultMap);
    final ResultMap postResultMap = new ResultMap.Builder(config, "defaultResultMap", Post.class, new ArrayList<ResultMapping>() {
      {
        add(new ResultMapping.Builder(config, "id", "id", registry.getTypeHandler(int.class))
            .flags(new ArrayList<ResultFlag>() {
              {
                add(ResultFlag.ID);
              }
            }).build());
        add(new ResultMapping.Builder(config, "blog", "blog_id", registry.getTypeHandler(int.class)).javaType(Blog.class).nestedQueryId("selectBlogById").build());
        add(new ResultMapping.Builder(config, "createdOn", "created_on", registry.getTypeHandler(Date.class)).build());
        add(new ResultMapping.Builder(config, "section", "section", registry.getTypeHandler(Section.class)).build());
        add(new ResultMapping.Builder(config, "subject", "subject", registry.getTypeHandler(String.class)).build());
        add(new ResultMapping.Builder(config, "body", "body", registry.getTypeHandler(String.class)).build());
        add(new ResultMapping.Builder(config, "tags").nestedResultMapId(tagResultMap.getId()).build());
        add(new ResultMapping.Builder(config, "comments").nestedResultMapId(commentResultMap.getId()).build());
      }
    }).build();
    return new MappedStatement.Builder(config, "selectPostsForBlog", sqlSource, SqlCommandType.SELECT)
        .parameterMap(parameterMap)
        .resultMaps(new ArrayList<ResultMap>() {
          {
            add(postResultMap);
          }
        }).build();
  }

  static MappedStatement prepareSelectPostMappedStatement(final Configuration config) {
    final TypeHandlerRegistry registry = config.getTypeHandlerRegistry();
    final SqlSource sqlSource = new StaticSqlSource(config,"SELECT p.id, p.created_on, p.blog_id, p.section, p.subject, p.body, pt.tag_id," +
        " t.name as tag_name, c.id as comment_id, c.name as comment_name, c.comment" +
        " FROM post p" +
        " LEFT OUTER JOIN post_tag pt ON pt.post_id = p.id" +
        " LEFT OUTER JOIN tag t ON pt.tag_id = t.id" +
        " LEFT OUTER JOIN comment c ON c.post_id = p.id" +
        " WHERE p.id = ?");
    final ParameterMap parameterMap = new ParameterMap.Builder(config, "defaultParameterMap", Author.class,
        new ArrayList<ParameterMapping>() {
          {
            add(new ParameterMapping.Builder(config, "id", registry.getTypeHandler(int.class)).build());
          }
        }).build();
    final ResultMap tagResultMap = new ResultMap.Builder(config, "tagResultMap", Tag.class, new ArrayList<ResultMapping>() {
      {
        add(new ResultMapping.Builder(config, "id", "tag_id", registry.getTypeHandler(int.class))
            .flags(new ArrayList<ResultFlag>() {
              {
                add(ResultFlag.ID);
              }
            }).build());
        add(new ResultMapping.Builder(config, "name", "tag_name", registry.getTypeHandler(String.class)).build());
      }
    }).build();
    final ResultMap commentResultMap = new ResultMap.Builder(config, "commentResultMap", Comment.class, new ArrayList<ResultMapping>() {
      {
        add(new ResultMapping.Builder(config, "id", "comment_id", registry.getTypeHandler(int.class))
            .flags(new ArrayList<ResultFlag>() {
              {
                add(ResultFlag.ID);
              }
            }).build());
        add(new ResultMapping.Builder(config, "name", "comment_name", registry.getTypeHandler(String.class)).build());
        add(new ResultMapping.Builder(config, "comment", "comment", registry.getTypeHandler(String.class)).build());
      }
    }).build();
    config.addResultMap(tagResultMap);
    config.addResultMap(commentResultMap);
    final ResultMap postResultMap = new ResultMap.Builder(config, "", Post.class, new ArrayList<ResultMapping>() {
      {
        add(new ResultMapping.Builder(config, "id", "id", registry.getTypeHandler(int.class))
            .flags(new ArrayList<ResultFlag>() {
              {
                add(ResultFlag.ID);
              }
            }).build());
        add(new ResultMapping.Builder(config, "blog", "blog_id", registry.getTypeHandler(int.class)).javaType(Blog.class).nestedQueryId("selectBlogById").build());
        add(new ResultMapping.Builder(config, "createdOn", "created_on", registry.getTypeHandler(Date.class)).build());
        add(new ResultMapping.Builder(config, "section", "section", registry.getTypeHandler(Section.class)).build());
        add(new ResultMapping.Builder(config, "subject", "subject", registry.getTypeHandler(String.class)).build());
        add(new ResultMapping.Builder(config, "body", "body", registry.getTypeHandler(String.class)).build());
        add(new ResultMapping.Builder(config, "tags").nestedResultMapId(tagResultMap.getId()).build());
        add(new ResultMapping.Builder(config, "comments").nestedResultMapId(commentResultMap.getId()).build());
      }
    }).build();


    return new MappedStatement.Builder(config, "selectPostsForBlog", sqlSource, SqlCommandType.SELECT)
        .parameterMap(parameterMap)
        .resultMaps(new ArrayList<ResultMap>() {
          {
            add(postResultMap);
          }
        }).build();
  }


  static MappedStatement prepareSelectPostWithBlogByAuthorMappedStatement(final Configuration config) {
    final TypeHandlerRegistry registry = config.getTypeHandlerRegistry();
    final SqlSource sqlSource = new StaticSqlSource(config,"SELECT p.id, p.created_on, p.blog_id, p.author_id, p.section, p.subject, p.body, pt.tag_id," +
        " t.name as tag_name, c.id as comment_id, c.name as comment_name, c.comment" +
        " FROM post p" +
        " LEFT OUTER JOIN post_tag pt ON pt.post_id = p.id" +
        " LEFT OUTER JOIN tag t ON pt.tag_id = t.id" +
        " LEFT OUTER JOIN comment c ON c.post_id = p.id" +
        " WHERE p.id = ?");
    final ParameterMap parameterMap = new ParameterMap.Builder(config, "defaultParameterMap", Author.class,
        new ArrayList<ParameterMapping>() {
          {
            add(new ParameterMapping.Builder(config, "id", registry.getTypeHandler(int.class)).build());
          }
        }).build();
    final ResultMap tagResultMap = new ResultMap.Builder(config, "tagResultMap", Tag.class, new ArrayList<ResultMapping>() {
      {
        add(new ResultMapping.Builder(config, "id", "tag_id", registry.getTypeHandler(int.class))
            .flags(new ArrayList<ResultFlag>() {
              {
                add(ResultFlag.ID);
              }
            }).build());
        add(new ResultMapping.Builder(config, "name", "tag_name", registry.getTypeHandler(String.class)).build());
      }
    }).build();
    final ResultMap commentResultMap = new ResultMap.Builder(config, "commentResultMap", Comment.class, new ArrayList<ResultMapping>() {
      {
        add(new ResultMapping.Builder(config, "id", "comment_id", registry.getTypeHandler(int.class))
            .flags(new ArrayList<ResultFlag>() {
              {
                add(ResultFlag.ID);
              }
            }).build());
        add(new ResultMapping.Builder(config, "name", "comment_name", registry.getTypeHandler(String.class)).build());
        add(new ResultMapping.Builder(config, "comment", "comment", registry.getTypeHandler(String.class)).build());
      }
    }).build();
    config.addResultMap(tagResultMap);
    config.addResultMap(commentResultMap);
    final ResultMap postResultMap = new ResultMap.Builder(config, "postResultMap", Post.class, new ArrayList<ResultMapping>() {
      {
        add(new ResultMapping.Builder(config, "id", "id", registry.getTypeHandler(int.class))
            .flags(new ArrayList<ResultFlag>() {
              {
                add(ResultFlag.ID);
              }
            }).build());

        add(new ResultMapping.Builder(config, "blog").nestedQueryId("selectBlogByIdAndAuthor").composites(new ArrayList<ResultMapping>() {
          {
            add(new ResultMapping.Builder(config, "authorId", "author_id", registry.getTypeHandler(int.class)).build());
            add(new ResultMapping.Builder(config, "blogId", "blog_id", registry.getTypeHandler(int.class)).build());
          }
        }).build());
        add(new ResultMapping.Builder(config, "createdOn", "created_on", registry.getTypeHandler(Date.class)).build());
        add(new ResultMapping.Builder(config, "section", "section", registry.getTypeHandler(Section.class)).build());
        add(new ResultMapping.Builder(config, "subject", "subject", registry.getTypeHandler(String.class)).build());
        add(new ResultMapping.Builder(config, "body", "body", registry.getTypeHandler(String.class)).build());
        add(new ResultMapping.Builder(config, "tags").nestedResultMapId(tagResultMap.getId()).build());
        add(new ResultMapping.Builder(config, "comments").nestedResultMapId(commentResultMap.getId()).build());
      }
    }).build();


    return new MappedStatement.Builder(config, "selectPostsForBlog", sqlSource, SqlCommandType.SELECT)
        .parameterMap(parameterMap)
        .resultMaps(new ArrayList<ResultMap>() {
          {
            add(postResultMap);
          }
        }).build();
  }


  static MappedStatement prepareInsertAuthorMappedStatementWithBeforeAutoKey(final Configuration config) {
    final TypeHandlerRegistry registry = config.getTypeHandlerRegistry();
    final ResultMap rm = new ResultMap.Builder(config, "keyResultMap", Integer.class, new ArrayList<>())
        .build();

    MappedStatement kms = new MappedStatement.Builder(config, "insertAuthor!selectKey", new StaticSqlSource(config,"SELECT 123456 as id FROM SYSIBM.SYSDUMMY1"), SqlCommandType.SELECT)
        .keyProperty("id")
        .resultMaps(new ArrayList<ResultMap>() {
          {
            add(rm);
          }
        })
        .build();
    config.addMappedStatement(kms);
    return new MappedStatement.Builder(config, "insertAuthor", new DynamicSqlSource(config, new TextSqlNode("INSERT INTO author (id,username,password,email,bio,favourite_section) values(#{id},#{username},#{password},#{email},#{bio:VARCHAR},#{favouriteSection})")), SqlCommandType.INSERT)
        .parameterMap(
            new ParameterMap.Builder(config, "defaultParameterMap", Author.class, new ArrayList<ParameterMapping>() {
              {
                add(new ParameterMapping.Builder(config, "id", registry.getTypeHandler(Integer.class)).build());
                add(new ParameterMapping.Builder(config, "username", registry.getTypeHandler(String.class)).build());
                add(new ParameterMapping.Builder(config, "password", registry.getTypeHandler(String.class)).build());
                add(new ParameterMapping.Builder(config, "email", registry.getTypeHandler(String.class)).build());
                add(new ParameterMapping.Builder(config, "bio", registry.getTypeHandler(String.class)).jdbcType(JdbcType.VARCHAR).build());
                add(new ParameterMapping.Builder(config, "favouriteSection", registry.getTypeHandler(Section.class)).jdbcType(JdbcType.VARCHAR).build());
              }
            }).build())
        .cache(authorCache)
        .keyGenerator(new SelectKeyGenerator(kms, true))
        .keyProperty("id")
        .build();
  }


}
