oracle通用帮助类

其他 2019-10-10 09:20:34 阅读次数: 0

调用

//连接数据库
static private void DataBaseConnect()
        {
            string connection = string.Format("User Id={0};Password={1};Data Source=(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST={2})(PORT={3}))(CONNECT_DATA=(SERVICE_NAME={4})))",
           "zhzepp",
            "citms",
             "192.168.10.113",
             "1521",
             "ORCL");
            RepositoryManager.AddConnection("Program", connection);
        }

例如查询

 static void Main(string[] args)
        {
            DataBaseConnect();
            using (IRepository<PUNISH_ILLEGALVEHICLE_REALModel> repository = RepositoryManager.CreateRepository<PUNISH_ILLEGALVEHICLE_REALModel>())
            {
                var list = repository.GetModels().ToList();
            }
        }

测试实体

using DataBaseTest.DataBase;
using System;
using System.Collections.Generic;
using System.ComponentModel.DataAnnotations;
using System.ComponentModel.DataAnnotations.Schema;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace DataBaseTest
{
    [Table("PUNISH_ILLEGALVEHICLE_REAL")]
    public class PUNISH_ILLEGALVEHICLE_REALModel : BaseEntity
    {
        /// <summary>
        /// 选项ID
        /// </summary>
        [Column("PROCESSID"), MaxLength(50), Key]
        public string processid { get; set; }

        [Column("SPOTTINGNAME")]
        public string Spottingname { get; set; }

        [Column("PLATENO")]
        public string plateno { get; set; } 

    }
}

数据库帮助类

BaseEntity

using System;
using System.Collections.Generic;
using System.ComponentModel.DataAnnotations;
using System.ComponentModel.DataAnnotations.Schema;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace DataBaseTest.DataBase
{
    public abstract class BaseEntity
    {
         /// <summary>
        /// 新增调用
        /// </summary>
        public virtual void Create()
        {
        }
        /// <summary>
        /// 新增调用
        /// </summary>
        public virtual void CreateApp()
        {
        }
        /// <summary>
        /// 编辑调用
        /// </summary>
        /// <param name="keyValue">主键值</param>
        public virtual void Modify(string keyValue)
        {
        }
        /// <summary>
        /// 删除调用
        /// </summary>
        /// <param name="keyValue">主键值</param>
        public virtual void Remove(string keyValue)
        {
        }
        /// <summary>
        /// 编辑调用
        /// </summary>
        /// <param name="keyValue">主键值</param>
        public virtual void Modify(int keyValue)
        {
        }
        /// <summary>
        /// 删除调用
        /// </summary>
        /// <param name="keyValue">主键值</param>
        public virtual void Remove(int keyValue)
        {
        }
    }
}

EFRepository

using Oracle.ManagedDataAccess.Client;
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Data.Common;
using System.Data.Entity;
using System.Data.Entity.Infrastructure;
using System.Data.SqlClient;
using System.Linq;
using System.Linq.Expressions;
using System.Text;
using System.Threading.Tasks;

namespace DataBaseTest.DataBase
{
    [DbConfigurationType(typeof(OracleConfiguration))]
    public class EFRepository<TEntity> : IRepository<TEntity> where TEntity : BaseEntity
    {
        #region 属性
        /// <summary>
        /// 数据库上下文
        /// </summary>
        private ProgramContext<TEntity> Context { get; set; }
        #endregion

        #region 构造函数        
        /// <summary>
        /// 构造函数
        /// </summary>
        public EFRepository()
        {
            Context = new ProgramContext<TEntity>();
        }

        public EFRepository(string connectionString)
        {
            Context = new ProgramContext<TEntity>(connectionString);
        }
        #endregion

        #region 公共方法
        /// <summary>
        /// 删除对象
        /// </summary>
        /// <param name="item"></param>
        public bool Delete(string keyValue)
        {
            if (string.IsNullOrEmpty(keyValue))
                return false;
            var entity = Find(keyValue);
            if (entity == null)
                return false;
            Context.Models.Remove(Find(keyValue));
            return false;
        }

        /// <summary>
        /// 按ID获取对象
        /// </summary>
        /// <param name="id"></param>
        /// <returns></returns>
        public TEntity Find(object id)
        {
            return Context.Models.Find(id);
        }
        /// <summary>
        /// 获取所有对象
        /// </summary>
        /// <returns></returns>
        public IQueryable<TEntity> GetModels()
        {
            return Context.Models;
        }
        /// <summary>
        /// 根据条件进行查询
        /// </summary>
        /// <typeparam name="Tkey"></typeparam>
        /// <param name="whereLambda"></param>
        /// <param name="orderbyLambda"></param>
        /// <param name="isAsc"></param>
        /// <returns></returns>
        public IQueryable<TEntity> FindList<Tkey>(Expression<Func<TEntity, bool>> whereLambda, Func<TEntity, Tkey> orderbyLambda, bool isAsc)
        {
            if (isAsc)
            {
                var temp = Context.Set<TEntity>().Where(whereLambda)
                             .OrderBy<TEntity, Tkey>(orderbyLambda);
                return temp.AsQueryable();
            }
            else
            {
                var temp = Context.Set<TEntity>().Where(whereLambda)
                           .OrderByDescending<TEntity, Tkey>(orderbyLambda);
                return temp.AsQueryable();
            }
        }


        /// <summary>
        /// 分页查询 +  排序
        /// </summary>
        /// <typeparam name="Tkey"></typeparam>
        /// <param name="pagination"></param>
        /// <param name="orderbyLambda"></param>
        /// <returns></returns>
        public IQueryable<TEntity> FindList<Tkey>(Pagination pagination, Func<TEntity, Tkey> orderbyLambda,out int records,out int total)
        {
             records = pagination.records;//总记录数
             total = pagination.total;//总页数
            var data = FindList<Tkey>(pagination.pageIndex, pagination.pageSize, out records, out total, orderbyLambda, pagination.isAsc);
            return data;
        }
        /// <summary>
        ///  分页查询 + 条件查询 + 排序
        /// </summary>
        /// <typeparam name="Tkey"></typeparam>
        /// <param name="pagination"></param>
        /// <param name="orderbyLambda"></param>
        /// <returns></returns>
        public IQueryable<TEntity> FindList<Tkey>(Pagination pagination, Expression<Func<TEntity, bool>> whereLambda, Func<TEntity, Tkey> orderbyLambda,out int records, out int total)
        {
            records = pagination.records;//总记录数
            total = pagination.total;//总页数
            var data = FindList<Tkey>(pagination.pageIndex, pagination.pageSize, out records, out total, whereLambda, orderbyLambda, pagination.isAsc);
            return data;
        }
      

        /// <summary>
        /// 更新对象
        /// </summary>
        /// <param name="item"></param>
        public bool Update(string keyValue, TEntity item)
        {
            if (item == null || string.IsNullOrEmpty(keyValue))
                return false;
            var entityToUpdate = Context.Models.Find(keyValue);
            if (entityToUpdate == null)
                return false;
            EmitMapper.ObjectMapperManager.DefaultInstance.GetMapper<TEntity, TEntity>()
                    .Map(item, entityToUpdate);
            return true;
        }

        /// <summary>
        /// 执行sql
        /// </summary>
        /// <param name="sql"></param>
        /// <param name="parameters"></param>
        /// <returns></returns>
        public int ExecuteSql(string sql, params object[] parameters)
        {
            return Context.Database.ExecuteSqlCommand(sql, parameters);
        }
        public int QueryCountSql(string sql, params object[] parameters)
        {
            try
            {
                return Context.Database.SqlQuery<int>(sql, parameters).FirstOrDefault();
              
            }
            catch (Exception ex)
            {

                throw ex;
            }
        }



        public DataTable FindDataTable(string sql)
        {
            OracleConnection conn = new OracleConnection();
            conn.ConnectionString = Context.Database.Connection.ConnectionString;
            if (conn.State != ConnectionState.Open)
            {
                conn.Open();
            }
            OracleCommand cmd = new OracleCommand();
            cmd.Connection = conn;
            cmd.CommandText = sql;
            OracleDataAdapter adapter = new OracleDataAdapter(cmd);
            DataTable table = new DataTable();
            adapter.Fill(table);
            conn.Close();//连接需要关闭
            conn.Dispose();
            return table;

        }
        public DataTable SqlQueryForDataTatable(string sql, DbParameter[] parameters)
        {
            OracleConnection conn = new OracleConnection();
            conn.ConnectionString = Context.Database.Connection.ConnectionString;
            if (conn.State != ConnectionState.Open)
            {
                conn.Open();
            }
            OracleCommand cmd = new OracleCommand();
            cmd.Connection = conn;
            cmd.CommandText = sql;

            if (parameters != null && parameters.Length > 0)
            {
                foreach (var item in parameters)
                {
                    cmd.Parameters.Add(item);
                }
            }

            OracleDataAdapter adapter = new OracleDataAdapter(cmd);
            DataTable table = new DataTable();
            adapter.Fill(table);
            return table;
        } 

        /// <summary>
        /// sql对象查询
        /// </summary>
        /// <param name="sql"></param>
        /// <param name="parameters"></param>
        /// <returns></returns>
        public IEnumerable<TEntity> QuerySql(string sql, params object[] parameters)
        {
            try
            {
                return Context.Database.SqlQuery<TEntity>(sql, parameters).ToList();
           
            }
            catch (Exception ex)
            {

                throw ex;
            }

        }

        /// <summary>
        /// 删除所有
        /// </summary>
        public void DeleteAll()
        {
            Context.Models.RemoveRange(Context.Models);
        }

        /// <summary>
        /// 插入或更新
        /// </summary>
        /// <param name="entity"></param>
        public void InsertOrUpdate(string keyValue, TEntity entity)
        {
            if (!string.IsNullOrEmpty(keyValue))
            {
                entity.Modify(keyValue);
                Update(keyValue, entity);
            }
            else
            {
                entity.Create();
                Context.Models.Add(entity);
            }
        }
        /// <summary>
        /// 批量插入
        /// </summary>
        /// <param name="list"></param>
        public void InsertALL(List<TEntity> list)
        {
            Context.Models.AddRange(list);
            Context.SaveChanges();
        }

        /// <summary>
        /// 保存修改
        /// </summary>
        public void SaveChanges()
        {
            Context.SaveChanges();
        }

        /// <summary>
        /// 销毁方法
        /// </summary>
        public void Dispose()
        {
            Context.SaveChanges();
            Context.Dispose();
        }
        #endregion
        #region 查询调用方法
        /// <summary>
        /// 分页查询 +  排序
        /// </summary>
        /// <typeparam name="Tkey">泛型</typeparam>
        /// <param name="pageSize">每页大小</param>
        /// <param name="pageIndex">当前页码</param>
        /// <param name="total">总数量</param>
        /// <param name="orderbyLambda">排序条件</param>
        /// <param name="isAsc">是否升序</param>
        /// <returns>IQueryable 泛型集合</returns>
        public IQueryable<TEntity> FindList<Tkey>(int pageIndex, int pageSize, out int records, out int total, Func<TEntity, Tkey> orderbyLambda, bool isAsc)
        {
            records = Context.Set<TEntity>().Count();

            if (records > 0)
            {
                total = records % pageSize == 0 ? records / pageSize : records / pageSize + 1;
            }
            else
            {
                total = 0;
            }
            if (isAsc)
            {
                var temp = Context.Set<TEntity>()
                             .OrderBy<TEntity, Tkey>(orderbyLambda)
                             .Skip(pageSize * (pageIndex - 1))
                             .Take(pageSize);
                return temp.AsQueryable();
            }
            else
            {
                var temp = Context.Set<TEntity>()
                           .OrderByDescending<TEntity, Tkey>(orderbyLambda)
                           .Skip(pageSize * (pageIndex - 1))
                           .Take(pageSize);
                return temp.AsQueryable();
            }
        }
        /// <summary>
        /// 分页查询 + 条件查询 + 排序
        /// </summary>
        /// <typeparam name="Tkey">泛型</typeparam>
        /// <param name="pageSize">每页大小</param>
        /// <param name="pageIndex">当前页码</param>
        /// <param name="total">总数量</param>
        /// <param name="whereLambda">查询条件</param>
        /// <param name="orderbyLambda">排序条件</param>
        /// <param name="isAsc">是否升序</param>
        /// <returns>IQueryable 泛型集合</returns>
        public IQueryable<TEntity> FindList<Tkey>(int pageIndex, int pageSize, out int records, out int total, Expression<Func<TEntity, bool>> whereLambda, Func<TEntity, Tkey> orderbyLambda, bool isAsc)
        {
            records = Context.Set<TEntity>().Where(whereLambda).Count();
            if (records > 0)
            {
                total = records % pageSize == 0 ? records / pageSize : records / pageSize + 1;
            }
            else
            {
                total = 0;
            }
            if (isAsc)
            {
                var temp = Context.Set<TEntity>().Where(whereLambda)
                            .OrderBy<TEntity, Tkey>(orderbyLambda)
                             .Skip(pageSize * (pageIndex - 1))
                             .Take(pageSize);
                return temp.AsQueryable();
            }
            else
            {
                //降序
                var temp = Context.Set<TEntity>().Where(whereLambda)
                           .OrderByDescending<TEntity, Tkey>(orderbyLambda)
                           .Skip(pageSize * (pageIndex - 1))
                           .Take(pageSize);
                return temp.AsQueryable();
            }
        }
        #endregion

      
    }

    /// <summary>
    /// 通过代码配置数据库，避免需要修改app.config
    /// </summary>
    public class OracleConfiguration : DbConfiguration
    {
        public OracleConfiguration()
        {
            SetProviderServices("Oracle.ManagedDataAccess.Client", Oracle.ManagedDataAccess.EntityFramework.EFOracleProviderServices.Instance);
            SetProviderFactory("Oracle.ManagedDataAccess.Client", OracleClientFactory.Instance);
            SetDefaultConnectionFactory(new Oracle.ManagedDataAccess.EntityFramework.OracleConnectionFactory());
        }
    }
}

IRepository

using System;
using System.Collections.Generic;
using System.Data;
using System.Data.Common;
using System.Data.Entity.Infrastructure;
using System.Linq;
using System.Linq.Expressions;
using System.Text;
using System.Threading.Tasks;

namespace DataBaseTest.DataBase
{
    public interface IRepository<T> : IDisposable where T : BaseEntity
    {

        /// <summary>
        /// 删除实体
        /// </summary>
        /// <param name="item"></param>
        bool Delete(string keyValue);
        /// <summary>
        /// 删除所有
        /// </summary>
        void DeleteAll();

        /// <summary>
        /// 获取实体集合（延时结果集）
        /// </summary>
        /// <returns></returns>
        IQueryable<T> GetModels();

        /// <summary>
        /// 根据主键获得实体
        /// </summary>
        /// <param name="id"></param>
        /// <returns></returns>
        T Find(object id);

        /// <summary>
        /// 执行SQL
        /// </summary>
        /// <param name="sql"></param>
        /// <param name="param"></param>
        /// <returns></returns>
        int ExecuteSql(string sql, params object[] parameters);

        /// <summary>
        /// SQL查询
        /// </summary>
        /// <param name="sql"></param>
        /// <param name="parameters"></param>
        /// <returns></returns>
        IEnumerable<T> QuerySql(string sql, params object[] parameters);

        /// <summary>
        /// 手动保存
        /// </summary>
        void SaveChanges();

        /// <summary>
        /// 添加或更新
        /// </summary>
        /// <param name="entity"></param>
        void InsertOrUpdate(string keyValue, T entity);


        /// <summary>
        ///批量插入 
        /// </summary>
        /// <param name="list"></param>
        void InsertALL(List<T> list);

        /// <summary>
        /// 根据条件查询
        /// </summary>
        IQueryable<T> FindList<Tkey>(Expression<Func<T, bool>> whereLambda, Func<T, Tkey> orderbyLambda, bool isAsc);

        /// <summary>
        /// 分页查询 + 条件查询 + 排序
        /// </summary>
        IQueryable<T> FindList<Tkey>(Pagination pagination, Expression<Func<T, bool>> whereLambda, Func<T, Tkey> orderbyLambda,out int records, out int total);

        /// <summary>
        /// 分页查询 + 排序
        /// </summary>
        IQueryable<T> FindList<Tkey>(Pagination pagination, Func<T, Tkey> orderbyLambda, out int records, out int total);

        /// <summary>
        /// 获取统计个数
        /// </summary>
        /// <param name="sql"></param>
        /// <param name="parameters"></param>
        /// <returns></returns>
        int QueryCountSql(string sql, params object[] parameters);

        DataTable FindDataTable(string sql);
        DataTable SqlQueryForDataTatable(string sql, DbParameter[] parameters);
    }
}

Pagination

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace DataBaseTest.DataBase
{
    public class Pagination
    {
        public Pagination()
        {
            pageIndex = 1;
            pageSize = 30;
            isAsc = false;
        }
        /// <summary>
        /// 每页条数
        /// </summary>
        public int pageSize { get; set; }
        /// <summary>
        /// 当前页
        /// </summary>
        public int pageIndex { get; set; }
        /// <summary>
        /// 排序列
        /// </summary>
        public string sidx { get; set; }
        /// <summary>
        /// 是否升序排列
        /// </summary>
        public bool isAsc { get; set; }
        /// <summary>
        /// 总记录数
        /// </summary>
        public int records { get; set; }
        /// <summary>
        /// 总页数
        /// </summary>
        public int total { get; set; }

    }
}

ProgramContext

using Oracle.ManagedDataAccess.Client;
using System;
using System.Collections.Generic;
using System.Configuration;
using System.Data.Common;
using System.Data.Entity;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace DataBaseTest.DataBase
{
    public class ProgramContext<T> : DbContext
          where T : BaseEntity
    {
        #region 构造函数
        public ProgramContext()
            : this(CreateConnection("Program"))
        {

        }

        public ProgramContext(DbConnection conn)
            : base(conn, false)
        {

        }

        public ProgramContext(string connectionString)
            : this(Create(connectionString))
        {

        }
        #endregion

        #region 内部方法
        protected override void OnModelCreating(DbModelBuilder modelBuilder)
        {
            modelBuilder.HasDefaultSchema(UserName.ToUpper());
            base.OnModelCreating(modelBuilder);
        }

        protected static OracleConnection CreateConnection(string connectionName)
        {
            OracleConnectionStringBuilder oracleBuilder = new OracleConnectionStringBuilder();
            oracleBuilder.ConnectionString = ConfigurationManager.ConnectionStrings[connectionName].ConnectionString;
            UserName = oracleBuilder.UserID;
            OracleConnection conn = new OracleConnection(oracleBuilder.ConnectionString);
            return conn;
        }

        protected static OracleConnection Create(string connectionString)
        {
            OracleConnectionStringBuilder oracleBuilder = new OracleConnectionStringBuilder();
            oracleBuilder.ConnectionString = connectionString;
            UserName = oracleBuilder.UserID;
            OracleConnection conn = new OracleConnection(oracleBuilder.ConnectionString);
            return conn;
        }
        #endregion

        #region 属性
        public DbSet<T> Models { get; set; }

        private static string UserName { get; set; }
        #endregion
    }
}

RepositoryManager

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace DataBaseTest.DataBase
{
    public class RepositoryManager
    {
        /// <summary>
        /// 静态构造函数
        /// </summary>
        static RepositoryManager()
        {
            Connections = new Dictionary<string, string>();
        }

        /// <summary>
        /// 连接信息字典
        /// </summary>
        private static Dictionary<string, string> Connections { get; set; }

        /// <summary>
        /// 默认创建方式
        /// </summary>
        /// <typeparam name="T"></typeparam>
        /// <returns></returns>
        public static IRepository<T> CreateRepository<T>() where T : BaseEntity
        {
            try
            {
                return new EFRepository<T>(Connections["Program"]);
            }
            catch (KeyNotFoundException)
            {
                return new EFRepository<T>();
            }
        }

        /// <summary>
        /// 指定连接信息创建方式
        /// </summary>
        /// <typeparam name="T"></typeparam>
        /// <param name="connectionString"></param>
        /// <returns></returns>
        public static IRepository<T> CreateRepository<T>(string name) where T : BaseEntity
        {
            try
            {
                return new EFRepository<T>(Connections[name]);
            }
            catch (KeyNotFoundException)
            {
                return new EFRepository<T>();
            }
        }

        /// <summary>
        /// 添加链接信息
        /// </summary>
        /// <param name="name"></param>
        /// <param name="connectionString"></param>
        public static void AddConnection(string name, string connectionString)
        {
            if (Connections.ContainsKey(name))
                Connections[name] = connectionString;
            else
                Connections.Add(name, connectionString);
        }
    }
}

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