content: package com.java2nb.novel.mapper;
  
  import static com.java2nb.novel.mapper.BookContentDynamicSqlSupport.*;
  import static org.mybatis.dynamic.sql.SqlBuilder.*;
  
  import com.java2nb.novel.entity.BookContent;
  import java.util.Collection;
  import java.util.List;
  import java.util.Optional;
  import javax.annotation.Generated;
  import org.apache.ibatis.annotations.DeleteProvider;
  import org.apache.ibatis.annotations.InsertProvider;
  import org.apache.ibatis.annotations.Mapper;
  import org.apache.ibatis.annotations.Result;
  import org.apache.ibatis.annotations.ResultMap;
  import org.apache.ibatis.annotations.Results;
  import org.apache.ibatis.annotations.SelectProvider;
  import org.apache.ibatis.annotations.UpdateProvider;
  import org.apache.ibatis.type.JdbcType;
  import org.mybatis.dynamic.sql.BasicColumn;
  import org.mybatis.dynamic.sql.delete.DeleteDSLCompleter;
  import org.mybatis.dynamic.sql.delete.render.DeleteStatementProvider;
  import org.mybatis.dynamic.sql.insert.render.InsertStatementProvider;
  import org.mybatis.dynamic.sql.insert.render.MultiRowInsertStatementProvider;
  import org.mybatis.dynamic.sql.select.CountDSLCompleter;
  import org.mybatis.dynamic.sql.select.SelectDSLCompleter;
  import org.mybatis.dynamic.sql.select.render.SelectStatementProvider;
  import org.mybatis.dynamic.sql.update.UpdateDSL;
  import org.mybatis.dynamic.sql.update.UpdateDSLCompleter;
  import org.mybatis.dynamic.sql.update.UpdateModel;
  import org.mybatis.dynamic.sql.update.render.UpdateStatementProvider;
  import org.mybatis.dynamic.sql.util.SqlProviderAdapter;
  import org.mybatis.dynamic.sql.util.mybatis3.MyBatis3Utils;
  
  @Mapper
  public interface BookContentMapper {
      @Generated("org.mybatis.generator.api.MyBatisGenerator")
      BasicColumn[] selectList = BasicColumn.columnList(id, indexId, content);
  
      @Generated("org.mybatis.generator.api.MyBatisGenerator")
      @SelectProvider(type=SqlProviderAdapter.class, method="select")
      long count(SelectStatementProvider selectStatement);
  
      @Generated("org.mybatis.generator.api.MyBatisGenerator")
      @DeleteProvider(type=SqlProviderAdapter.class, method="delete")
      int delete(DeleteStatementProvider deleteStatement);
  
      @Generated("org.mybatis.generator.api.MyBatisGenerator")
      @InsertProvider(type=SqlProviderAdapter.class, method="insert")
      int insert(InsertStatementProvider<BookContent> insertStatement);
  
      @Generated("org.mybatis.generator.api.MyBatisGenerator")
      @InsertProvider(type=SqlProviderAdapter.class, method="insertMultiple")
      int insertMultiple(MultiRowInsertStatementProvider<BookContent> multipleInsertStatement);
  
      @Generated("org.mybatis.generator.api.MyBatisGenerator")
      @SelectProvider(type=SqlProviderAdapter.class, method="select")
      @ResultMap("BookContentResult")
      Optional<BookContent> selectOne(SelectStatementProvider selectStatement);
  
      @Generated("org.mybatis.generator.api.MyBatisGenerator")
      @SelectProvider(type=SqlProviderAdapter.class, method="select")
      @Results(id="BookContentResult", value = {
          @Result(column="id", property="id", jdbcType=JdbcType.BIGINT, id=true),
          @Result(column="index_id", property="indexId", jdbcType=JdbcType.BIGINT),
          @Result(column="content", property="content", jdbcType=JdbcType.VARCHAR)
      })
      List<BookContent> selectMany(SelectStatementProvider selectStatement);
  
      @Generated("org.mybatis.generator.api.MyBatisGenerator")
      @UpdateProvider(type=SqlProviderAdapter.class, method="update")
      int update(UpdateStatementProvider updateStatement);
  
      @Generated("org.mybatis.generator.api.MyBatisGenerator")
      default long count(CountDSLCompleter completer) {
          return MyBatis3Utils.countFrom(this::count, bookContent, completer);
      }
  
      @Generated("org.mybatis.generator.api.MyBatisGenerator")
      default int delete(DeleteDSLCompleter completer) {
          return MyBatis3Utils.deleteFrom(this::delete, bookContent, completer);
      }
  
      @Generated("org.mybatis.generator.api.MyBatisGenerator")
      default int deleteByPrimaryKey(Long id_) {
          return delete(c -> 
              c.where(id, isEqualTo(id_))
          );
      }
  
      @Generated("org.mybatis.generator.api.MyBatisGenerator")
      default int insert(BookContent record) {
          return MyBatis3Utils.insert(this::insert, record, bookContent, c ->
              c.map(id).toProperty("id")
              .map(indexId).toProperty("indexId")
              .map(content).toProperty("content")
          );
      }
  
      @Generated("org.mybatis.generator.api.MyBatisGenerator")
      default int insertMultiple(Collection<BookContent> records) {
          return MyBatis3Utils.insertMultiple(this::insertMultiple, records, bookContent, c ->
              c.map(id).toProperty("id")
              .map(indexId).toProperty("indexId")
              .map(content).toProperty("content")
          );
      }
  
      @Generated("org.mybatis.generator.api.MyBatisGenerator")
      default int insertSelective(BookContent record) {
          return MyBatis3Utils.insert(this::insert, record, bookContent, c ->
              c.map(id).toPropertyWhenPresent("id", record::getId)
              .map(indexId).toPropertyWhenPresent("indexId", record::getIndexId)
              .map(content).toPropertyWhenPresent("content", record::getContent)
          );
      }
  
      @Generated("org.mybatis.generator.api.MyBatisGenerator")
      default Optional<BookContent> selectOne(SelectDSLCompleter completer) {
          return MyBatis3Utils.selectOne(this::selectOne, selectList, bookContent, completer);
      }
  
      @Generated("org.mybatis.generator.api.MyBatisGenerator")
      default List<BookContent> select(SelectDSLCompleter completer) {
          return MyBatis3Utils.selectList(this::selectMany, selectList, bookContent, completer);
      }
  
      @Generated("org.mybatis.generator.api.MyBatisGenerator")
      default List<BookContent> selectDistinct(SelectDSLCompleter completer) {
          return MyBatis3Utils.selectDistinct(this::selectMany, selectList, bookContent, completer);
      }
  
      @Generated("org.mybatis.generator.api.MyBatisGenerator")
      default Optional<BookContent> selectByPrimaryKey(Long id_) {
          return selectOne(c ->
              c.where(id, isEqualTo(id_))
          );
      }
  
      @Generated("org.mybatis.generator.api.MyBatisGenerator")
      default int update(UpdateDSLCompleter completer) {
          return MyBatis3Utils.update(this::update, bookContent, completer);
      }
  
      @Generated("org.mybatis.generator.api.MyBatisGenerator")
      static UpdateDSL<UpdateModel> updateAllColumns(BookContent record, UpdateDSL<UpdateModel> dsl) {
          return dsl.set(id).equalTo(record::getId)
                  .set(indexId).equalTo(record::getIndexId)
                  .set(content).equalTo(record::getContent);
      }
  
      @Generated("org.mybatis.generator.api.MyBatisGenerator")
      static UpdateDSL<UpdateModel> updateSelectiveColumns(BookContent record, UpdateDSL<UpdateModel> dsl) {
          return dsl.set(id).equalToWhenPresent(record::getId)
                  .set(indexId).equalToWhenPresent(record::getIndexId)
                  .set(content).equalToWhenPresent(record::getContent);
      }
  
      @Generated("org.mybatis.generator.api.MyBatisGenerator")
      default int updateByPrimaryKey(BookContent record) {
          return update(c ->
              c.set(indexId).equalTo(record::getIndexId)
              .set(content).equalTo(record::getContent)
              .where(id, isEqualTo(record::getId))
          );
      }
  
      @Generated("org.mybatis.generator.api.MyBatisGenerator")
      default int updateByPrimaryKeySelective(BookContent record) {
          return update(c ->
              c.set(indexId).equalToWhenPresent(record::getIndexId)
              .set(content).equalToWhenPresent(record::getContent)
              .where(id, isEqualTo(record::getId))
          );
      }
  }