public string CreateTableCommand{get {if (_createTableCommand == null){string script = @"
CREATE TABLE @TABLENAME(
@FIELDS
)
";if (this.currDb.CurrentDBMSType == PWMIS.Common.DBMSType.PostgreSQL && !string.IsNullOrEmpty(currEntity.IdentityName)){string seq ="CREATE SEQUENCE " + currEntity.TableName + "_" + currEntity.IdentityName + "_" + "seq INCREMENT 1 MINVALUE 1 MAXVALUE 9223372036854775807 START 1 CACHE 1;";script = seq + script;}else if (this.currDb.CurrentDBMSType == PWMIS.Common.DBMSType.Oracle && !string.IsNullOrEmpty(currEntity.IdentityName)){// --; 语句分割符号string seqTemp = @"CREATE SEQUENCE @TableName_@IDName_SEQ MINVALUE 1 NOMAXVALUE INCREMENT BY 1 START WITH 1 NOCACHE
;--CREATE OR REPLACE TRIGGER @TableName_INS_TRG BEFOREINSERT ON [@TableName] FOR EACH ROW WHEN(new.[@IDName] IS NULL)
BEGINSELECT @TableName_@IDName_SEQ.NEXTVAL INTO :new.[@IDName] FROM DUAL;
END;
;--
";script = script + ";--\r\n" + seqTemp.Replace("@TableName", currEntity.TableName).Replace("@IDName", currEntity.IdentityName);}var entityFields = EntityFieldsCache.Item(this.currEntity.GetType());string fieldsText = "";foreach (string field in this.currEntity.PropertyNames){string columnScript =entityFields.CreateTableColumnScript(this.currDb as AdoHelper, this.currEntity, field);fieldsText = fieldsText + "," + columnScript+"\r\n";}string tableName =this.currDb.GetPreparedSQL("["+ currTableName+"]");_createTableCommand = script.Replace("@TABLENAME", tableName).Replace("@FIELDS", fieldsText.Substring(1));}return _createTableCommand;}}

public class Oracle : AdoHelper
{//其它略public override string GetNativeDbTypeName(IDataParameter para){OracleParameter oraPara = (OracleParameter)para;OracleType oraType = oraPara.OracleType;if (oraType == OracleType.DateTime)return "Date";else if (oraType == OracleType.Int32)return "INT";elsereturn oraType.ToString();}
}

namespace PWMIS.Core.Extensions
{public abstract class OracleDbContext :DbContext{/// <summary>/// 用连接字符串名字初始化本类/// </summary>/// <param name="connName"></param>public OracleDbContext(string connName): base(connName){ }/// <summary>/// 检查实体类对应的数据表是否在数据库中存在/// </summary>protected override void CheckTableExists<T>(){//创建表if (CurrentDataBase.CurrentDBMSType == PWMIS.Common.DBMSType.Oracle){var entity = new T();var dsScheme = CurrentDataBase.GetSchema("Tables", null);string owner = CurrentDataBase.ConnectionUserID;var rows = dsScheme.Select("OWNER='"+ owner +"' and table_name='" + entity.GetTableName() + "'");if (rows.Length == 0){EntityCommand ecmd = new EntityCommand(entity, CurrentDataBase);string sql = ecmd.CreateTableCommand;//OracleClient 不能批量执行多条SQL语句string[] sqlArr = sql.Split(new string[] {";--" }, StringSplitOptions.RemoveEmptyEntries);foreach (string item in sqlArr){if(item.Length >10) //去除回车行
                            CurrentDataBase.ExecuteNonQuery(item);}}}}}
}

namespace SampleORMTest
{/// <summary>/// 用来测试的本地SqlServer 数据库上下文类/// </summary>public class LocalDbContext : DbContext  //OracleDbContext, SqlServerDbContext 会根据 local连接字符串自动决定内部使用
    {public LocalDbContext(): base("local"){//local 是连接字符串名字
        }#region 父类抽象方法的实现protected override bool CheckAllTableExists(){//创建用户表CheckTableExists<User>();return true;}#endregion}
}

<connectionStrings><!--<add name="local" connectionString="Data Source=.;Initial Catalog=LocalDB;Integrated Security=True" providerName="SqlServer" />--><!--下面的配置适应于 Oracle.Client--><add name="local" connectionString="Data Source=XE;User Id=SOD;Password=sod123;Integrated Security=no;" providerName="Oracle" /></connectionStrings>

LocalDbContext context = new LocalDbContext();//自动创建表
User zhang_san = new User() { Name = "zhang san", Pwd = "123" };count += context.Add<User>(zhang_san);//采用 DbContext 方式插入数据

User user = new User(){  Name="zhang san";};
OQL q=OQL.From(user).Select().Where(user.Name)
.END;
List<User> users = EntityQuery<User>.QueryList(OQL);

User user = new User();
OQL q = OQL.From(user).Select().Where(cmp => cmp.Comparer(user.Name, "=", "zhang san") ).END;
List<User> users = EntityQuery<User>.QueryList(q);

User user = new User();OQL q = OQL.From(user).Select().Where(cmp => cmp.Comparer(user.Name, "=", "zhang san")  &cmp.Comparer(user.Pwd, "=", "123")  ).END;

<add name="local" connectionString="Data Source=XE;User Id=SOD;Password=sod123" providerName="PWMIS.DataProvider.Data.OracleDataAccess.Oracle,PWMIS.OracleClient" />

其他信息: 未能加载文件或程序集“Oracle.DataAccess, Version=2.121.2.0, Culture=neutral, PublicKeyToken=89b483f429c47342”或它的某一个依赖项。试图加载格式不正确的程序。

mydb =(DESCRIPTION =(ADDRESS = (PROTOCOL = TCP)(HOST = 127.0.0.1)(PORT = 1521))(CONNECT_DATA =(SERVER = DEDICATED)(SERVICE_NAME = XE) ))

XE =(DESCRIPTION =(ADDRESS = (PROTOCOL = TCP)(HOST = dth-home)(PORT = 1521))(CONNECT_DATA =(SERVER = DEDICATED)(SERVICE_NAME = XE)))EXTPROC_CONNECTION_DATA =(DESCRIPTION =(ADDRESS_LIST =(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1)))(CONNECT_DATA =(SID = PLSExtProc)(PRESENTATION = RO)))ORACLR_CONNECTION_DATA = (DESCRIPTION = (ADDRESS_LIST = (ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1)) ) (CONNECT_DATA = (SID = CLRExtProc) (PRESENTATION = RO) ) ) 

<add name="local" connectionString="Data Source=mydb;User Id=SOD;Password=sod123" providerName="PWMIS.DataProvider.Data.OracleDataAccess.Oracle,PWMIS.OracleClient" />

 <add name="local" connectionString="Data Source=(DESCRIPTION =(ADDRESS = (PROTOCOL = TCP)(HOST = 127.0.0.1)(PORT = 1521))(CONNECT_DATA =(SERVER = DEDICATED)(SERVICE_NAME = XE) ));User Id=SOD;Password=sod123"providerName="PWMIS.DataProvider.Data.OracleDataAccess.Oracle,PWMIS.OracleClient" />

install.bat all c:\oracle odac

install_odpm.bat c:\oracle x64 true

c:\oracle;c:\oracle\bin;