/// <summary>
/// 根据表名获取实体类的字符串
/// </summary>
/// <param name="db"></param>
/// <param name="sql"></param>
/// <param name="className"></param>
/// <returns></returns>
public string TableNameToClass(SqlSugarClient db, string tableName)
{
var dt = db.GetDataTable(string.Format("select * from {0} limit 0,1", tableName));
var tableColumns = GetTableColumns(db, tableName);
var reval = DataTableToClass(dt, tableName, null, tableColumns);
return(reval);
}
/// <summary>
/// 创建SQL实体文件,指定表名
/// </summary>
public void CreateClassFilesByTableNames(SqlSugarClient db, string fileDirectory, string nameSpace, params string[] tableNames)
{
string sql = GetCreateClassSql(null);
var tables = db.GetDataTable(sql);
if (tables != null && tables.Rows.Count > 0)
{
foreach (DataRow dr in tables.Rows)
{
string tableName = dr["name"].ToString().ToLower();
if (tableNames.Any(it => it.ToLower() == tableName))
{
var currentTable = db.GetDataTable(string.Format("select top 1 * from {0}", tableName));
var classCode = DataTableToClass(currentTable, tableName, nameSpace);
FileSugar.WriteText(fileDirectory.TrimEnd('\\') + "\\" + tableName + ".cs", classCode);
}
}
}
}
/// <summary>
/// 多线程请求所有数据库节点，同步汇总结果
/// </summary>
/// <typeparam name="T">支持DataTable、实体类和值类型</typeparam>
/// <param name="sql"></param>
/// <param name="connectionStringList">连接字符串数组</param>
/// <param name="whereObj">参数 例如: new { id="1",name="张三"}</param>
/// <returns></returns>
public Taskable <T> Taskable <T>(string sql, List <string> connectionStringList, object whereObj = null)
{
Taskable <T> reval = new Taskable <T>();
reval.Sql = sql;
reval.WhereObj = whereObj;
var tasks = new Task <CloudSearchResult <T> > [connectionStringList.Count];
for (int i = 0; i < tasks.Length; i++)
{
CloudPubMethod.TaskFactory <CloudSearchResult <T> >(ti =>
{
string innerSql = sql;
var connString = connectionStringList[ti];
var db = new SqlSugarClient(connString);
SettingConnection(db);
CloudSearchResult <T> itemReval = new CloudSearchResult <T>();
var isDataTable = typeof(T) == typeof(DataTable);
var isClass = typeof(T).IsClass;
if (innerSql.Contains("$:->connectionString<-:$"))
{
innerSql = innerSql.Replace("$:->connectionString<-:$", connString);
}
if (isDataTable)
{
itemReval.DataTable = db.GetDataTable(innerSql, whereObj);
}
else if (isClass)
{
itemReval.Entities = db.SqlQuery <T>(innerSql, whereObj);
}
else
{
var obj = db.GetScalar(sql, whereObj);
if (obj == DBNull.Value)
{
itemReval.Value = default(T);
}
else
{
obj = Convert.ChangeType(obj, typeof(T));
itemReval.Value = (T)obj;
}
}
itemReval.ConnectionString = connString;
return(itemReval);
}, tasks, i);
}
Task.WaitAll(tasks);
reval.Tasks = tasks;
return(reval);
}
/// <summary>
/// 多线程请求所有数据库节点，同步汇总结果
/// </summary>
/// <typeparam name="T">支持DataTable、实体类和值类型</typeparam>
/// <param name="sqlSelect">sql from之前（例如： "select count(*)" ）</param>
/// <param name="sqlEnd">sql from之后（例如： "from table where id=1" </param>
/// <param name="whereObj">参数 例如: new { id="1",name="张三"}</param>
/// <returns></returns>
public TaskableWithCount <T> TaskableWithCount <T>(string sqlSelect, string sqlEnd, object whereObj = null)
{
TaskableWithCount <T> reval = new TaskableWithCount <T>();
reval.Sql = sqlSelect + sqlEnd;
reval.WhereObj = whereObj;
var tasks = new Task <CloudSearchResult <T> > [configList.Count];
for (int i = 0; i < tasks.Length; i++)
{
CloudPubMethod.TaskFactory <CloudSearchResult <T> >(ti =>
{
var connString = configList[ti].ConnectionString;
var db = new SqlSugarClient(connString);
SettingConnection(db);
CloudSearchResult <T> itemReval = new CloudSearchResult <T>();
var isDataTable = typeof(T) == typeof(DataTable);
var isClass = typeof(T).IsClass;
if (isClass)
{
itemReval.Entities = db.SqlQuery <T>(reval.Sql, whereObj);
}
else if (isDataTable)
{
itemReval.DataTable = db.GetDataTable(reval.Sql, whereObj);
}
else
{
var obj = db.GetScalar(reval.Sql, whereObj);
obj = Convert.ChangeType(obj, typeof(T));
itemReval.Value = (T)obj;
}
itemReval.Count = db.GetInt("SELECT COUNT(1)" + sqlEnd);;
itemReval.ConnectionString = connString;
return(itemReval);
}, tasks, i);
}
Task.WaitAll(tasks);
reval.Tasks = tasks;
return(reval);
}