/// <summary>
/// Underline it calls Command.Execute and return the number of row effected. No "returning"(in Oracle) or "output"(in SqlServer) parameter involves.
/// </summary>
/// <param name="obj"></param>
/// <param name="conn"></param>
/// <param name="trans"></param>
/// <returns></returns>
public virtual int Execute(ref T obj, DBConnectionWrapper conn, DBTransactionWrapper trans = null)
{
var sql = CreateSql(obj);
int ret = conn.Execute(sql, false, trans);
return(ret);
}
public static int Execute(this DBConnectionWrapper conn, Sql sql, bool storeProcedure = false, DBTransactionWrapper trans = null)
{
IDbCommand command = conn.CreateCommand(sql, trans);
if (storeProcedure)
{
command.CommandType = CommandType.StoredProcedure;
}
int ret = 0;
try
{
ret = command.ExecuteNonQuery();
for (int i = 0; i < sql.Parameters.Count; i++)
{
var p = sql.Parameters[i];
if (p.Direction == ParameterDirection.InputOutput || p.Direction == ParameterDirection.Output || p.Direction == ParameterDirection.ReturnValue)
{
var val = ((DbParameter)command.Parameters[p.Name]).Value;
p.Output = (val == DBNull.Value) ? null : val;
}
}
}
catch (DbException ex)
{
//throw;
throw new SqlCmdException("Error occurred when running SQL!", sql, ex);
}
return(ret);
}
public virtual int Delete(T obj, DBConnectionWrapper conn, DBTransactionWrapper trans = null)
{
if (DeleteCommand == null)
{
throw new NotSupportedException("Delete is not support for this [" + typeof(T).FullName + "], make sure you have primary key defined in Entity Metadata for this type.");
}
return(DeleteCommand.Execute(ref obj, conn, trans));
}
public static DBTableMapping <T> Get(IResolverProvider resolverProvider, DBConnectionWrapper currentConnection, DBTransactionWrapper currentTrans)
{
var ret = _Cache[resolverProvider.Idx];
if (ret == null)
{
return(_Cache[resolverProvider.Idx] = new DBTableMapping <T>(resolverProvider, currentConnection, currentTrans));
}
return(ret);
}
private DBTableMapping(IResolverProvider resolverProvider, DBConnectionWrapper currentConnection, DBTransactionWrapper currentTrans)
{
var mapping = DBObjectMapping <T> .Get();
Sql sql = resolverProvider.SqlResolver.ColumnMetaDataFromTable(TableName, Schema);
List <SchemaMetadata> metadatas = currentConnection.Query <SchemaMetadata>(sql, currentTrans);
ColumnMappingList = mapping.ColumnMappingList
.Select(i => new DBColumnMappingInfo <T>(i, metadatas.Single(j => string.Compare(j.COLUMN_NAME, i.ColumnName, true) == 0)));
}
public override int Execute(ref T obj, DBConnectionWrapper conn, DBTransactionWrapper trans = null)
{
var sql = CreateSql(obj);
var ret = conn.Query <T>(sql, trans).FirstOrDefault();
if (ret != null)
{
obj = ret;
return(1);
}
return(0);
}
public virtual T Load(T obj, DBConnectionWrapper conn, DBTransactionWrapper trans = null)
{
if (LoadCommand == null)
{
throw new NotSupportedException("Load is not support for this [" + typeof(T).FullName + "], make sure you have primary key defined in Entity Metadata for this type.");
}
int cnt = LoadCommand.Execute(ref obj, conn, trans);
if (cnt == 0)
{
return(default(T));
}
return(obj);
}
public static T GetSingleValue <T>(this DBConnectionWrapper conn, Sql sql, DBTransactionWrapper trans = null)
{
IDbCommand command = conn.CreateCommand(sql, trans);
try
{
object val = command.ExecuteScalar();
return(ParseFromDBValue <T>(val));
}
catch (DbException ex)
{
//throw;
throw new SqlCmdException("Error occurred when running SQL!", sql, ex);
}
}
public virtual int Update(ref T obj, DBConnectionWrapper conn, DBTransactionWrapper trans = null, params Expression <Func <T, object> >[] targetProperties)
{
if (UpdateCommand == null)
{
throw new NotSupportedException("Update is not support for this [" + typeof(T).FullName + "], make sure you have primary key defined in Entity Metadata for this type.");
}
IDBTableAdapterCommand <T> cmd = UpdateCommand;
if (targetProperties.Length > 0)
{
cmd = CreateUpdateCommand(targetProperties);
}
return(cmd.Execute(ref obj, conn, trans));
}
public static List <T> Query <T>(this DBConnectionWrapper conn, Sql sql, DBTransactionWrapper trans = null) where T : new()
{
IDbCommand command = conn.CreateCommand(sql, trans);
try
{
using (IDataReader reader = command.ExecuteReader())
{
return(reader.ToList <T>());
}
}
catch (DbException ex)
{
//throw;
throw new SqlCmdException("Error occurred when running SQL!", sql, ex);
}
}
public static List <T> GetFirstColumn <T>(this DBConnectionWrapper conn, Sql sql, DBTransactionWrapper trans = null)
{
IDbCommand command = conn.CreateCommand(sql, trans);
var mapping = DBObjectMapping <SingleColumn <T> > .Get().ColumnMappingList.Single();
List <T> ret = new List <T>();
try
{
using (IDataReader reader = command.ExecuteReader())
{
SingleColumn <T> obj = new SingleColumn <T>();
Action <SingleColumn <T>, IDataRecord, int> setter = null;
if (reader.Read())
{
setter = mapping.GetPropSetterForRecord(reader.GetFieldType(0));
reader.SetProperty(obj, mapping, setter, 0);
ret.Add(obj.Val);
}
while (reader.Read())
{
reader.SetProperty(obj, mapping, setter, 0);
ret.Add(obj.Val);
}
}
}
catch (DbException ex)
{
//throw;
throw new SqlCmdException("Error occurred when running SQL!", sql, ex);
}
return(ret);
}
public DBTableAdapterBase(IResolverProvider resolverProvider, ICommandBuilder <T> commandBuilder, DBConnectionWrapper currentConnection, DBTransactionWrapper currentTrans)
: base(resolverProvider, currentConnection, currentTrans)
{
CommandBuilder = commandBuilder;
InsertCommand = commandBuilder.CreateInsertCommand(this);
UpdateCommand = commandBuilder.CreateUpdateCommand(this);
DeleteCommand = commandBuilder.CreateDeleteCommand(this);
LoadCommand = commandBuilder.CreateLoadCommand(this);
}
public static T Load <T>(this DBConnectionWrapper conn, T obj, DBTransactionWrapper trans = null) where T : new()
{
var ta = conn.ResolverProvider.GetDBTableAdapter <T>(conn, trans);
return(ta.Load(obj, conn, trans));
}
public DBTableAdapterContext(IResolverProvider resolverProvider, DBConnectionWrapper currentConnection, DBTransactionWrapper currentTrans)
: this(DBTableMapping <T> .Get(resolverProvider, currentConnection, currentTrans))
{
ResolverProvider = resolverProvider;
}
public abstract IDBTableAdapter <T> GetDBTableAdapter <T>(DBConnectionWrapper currentConnection, DBTransactionWrapper currentTrans) where T : new();
public override IDBTableAdapter <T> GetDBTableAdapter <T>(DBConnectionWrapper currentConnection, DBTransactionWrapper currentTrans)
{
return(DBTableAdapter <T> .Get(this, _CommandBuilderFactory, currentConnection, currentTrans));
}
public virtual int Insert(ref T obj, DBConnectionWrapper conn, DBTransactionWrapper trans = null)
{
return(InsertCommand.Execute(ref obj, conn, trans));
}
public static int Insert <T>(this DBConnectionWrapper conn, ref T obj, DBTransactionWrapper trans = null) where T : new()
{
var ta = conn.ResolverProvider.GetDBTableAdapter <T>(conn, trans);
return(ta.Insert(ref obj, conn, trans));
}
public static int Update <T>(this DBConnectionWrapper conn, ref T obj, DBTransactionWrapper trans = null, params Expression <Func <T, object> >[] targetProperties) where T : new()
{
var ta = conn.ResolverProvider.GetDBTableAdapter <T>(conn, trans);
return(ta.Update(ref obj, conn, trans, targetProperties));
}
public static IDbCommand CreateCommand(this DBConnectionWrapper conn, Sql sql, DBTransactionWrapper trans = null)
{
return(conn.ResolverProvider.DBClassResolver.CreateCommand(sql, conn, trans));
}
public static IDBTableAdapter <T> Get(IResolverProvider resolverProvider, CommandBuilderFactoryBase commandBuilderFactory, DBConnectionWrapper currentConnection, DBTransactionWrapper currentTrans)
{
var ret = _Cache[resolverProvider.Idx];
if (ret == null)
{
var commandBuilder = commandBuilderFactory.CreateCommandBuilder <T>(resolverProvider.SqlResolver);
return(_Cache[resolverProvider.Idx] = new DBTableAdapter <T>(resolverProvider, commandBuilder, currentConnection, currentTrans));
}
return(ret);
}
private DBTableAdapter(IResolverProvider resolverProvider, ICommandBuilder <T> commandBuilder, DBConnectionWrapper currentConnection, DBTransactionWrapper currentTrans)
: base(resolverProvider, commandBuilder, currentConnection, currentTrans)
{
}
public DBTransactionWrapper(IDbTransaction transaction, DBConnectionWrapper connection)
{
Connection = connection;
Transaction = transaction;
}
