/// <summary>
///
/// </summary>
/// <param name="queryPrinciple"></param>
/// <param name="operationContext"></param>
public static void Assign(DbQueryPrinciple queryPrinciple, DbQueryOperationContext operationContext)
{
if (null != queryPrinciple && null == queryPrinciple._operationContext)
{
queryPrinciple._operationContext = operationContext;
}
}
/// <summary>
///
/// </summary>
/// <param name="operationContext"></param>
public EntryDescriptorManager(DbQueryOperationContext operationContext)
: base(operationContext)
{
if (!operationContext.Items.ContainsKey(CACHEKEY))
{
operationContext.Items.Add(CACHEKEY, new NameValueCollection <Type, IEntryDescriptor>());
}
_innerCacheRepository = (operationContext.Items[CACHEKEY] as INameValueCollection <Type, IEntryDescriptor>);
}
/// <summary>
///
/// </summary>
/// <param name="operationContext"></param>
public DbConnectionPool(DbQueryOperationContext operationContext)
: base(operationContext)
{
if (!operationContext.Items.ContainsKey(CACHEKEY))
{
operationContext.Items.Add(CACHEKEY, new NameValueCollection <string, DbConnection>());
}
_innerCacheRepository = (operationContext.Items[CACHEKEY] as INameValueCollection <string, DbConnection>);
}
/// <summary>
///
/// </summary>
/// <typeparam name="TEntity"></typeparam>
/// <param name="entity"></param>
/// <param name="queryAction"></param>
/// <param name="serviceContract"></param>
/// <param name="queryContract"></param>
/// <returns></returns>
protected OperationResult <TEntity> ExecuteQuery <TEntity>(TEntity entity, DbQueryActions queryAction, IDataServiceContract serviceContract, IDbQueryContract queryContract)
where TEntity : class
{
using (var _operationContext = new DbQueryOperationContext())
{
if (!IsExceptionalType(entity))
{
var _memberDescriptor = _operationContext.DescriptorManager.GetDescriptor(entity);
var _serviceContract = serviceContract ?? _memberDescriptor.ServiceContract;
var _operationSession = _operationContext.CreateSession(_serviceContract, queryAction);
_operationSession.Open();
ExecuteQueryImpl(_operationSession, entity, _memberDescriptor, _serviceContract, queryContract);
_operationSession.Close();
}
else
{
var _entities = entity as IList;
for (var i = 0; i < _entities.Count; i++)
{
if (!_operationContext.HasErrors)
{
var _memberDescriptor = _operationContext.DescriptorManager.GetDescriptor(_entities[i]);
var _serviceContract = serviceContract ?? _memberDescriptor.ServiceContract;
var _operationSession = _operationContext.CreateSession(_serviceContract, queryAction);
_operationSession.Open();
ExecuteQueryImpl(_operationSession, _entities[i], _memberDescriptor, _serviceContract, queryContract);
_operationSession.Close();
continue;
}
break;
}
}
if (_operationContext.HasErrors)
{
return(new OperationResult <TEntity>(entity, _operationContext.Errors));
}
}
return(new OperationResult <TEntity>(entity));
}
/// <summary>
///
/// </summary>
/// <param name="operationContext"></param>
/// <param name="queryContract"></param>
void InitializeRequiredProperties(DbQueryOperationContext operationContext, IDbQueryContract queryContract)
{
if (null == operationContext)
{
throw new ArgumentNullException("operationContext");
}
if (null == queryContract)
{
throw new ArgumentNullException("queryContract");
}
operationContext.ExecutionTimeout = queryContract.ExecutionTimeout;
operationContext.RequiresTransaction = queryContract.RequiresTransaction;
}
/// <summary>
///
/// </summary>
/// <typeparam name="TEntity"></typeparam>
/// <param name="predicate"></param>
/// <returns></returns>
protected OperationResult <TEntity> ExecuteQuery <TEntity>(Action <IDbQueryParameterizable> predicate = default(Action <IDbQueryParameterizable>))
where TEntity : class, new()
{
var _entity = new TEntity();
var _stackFrame = StackTraceHelpers.GetStackFrameByIndex(1);
var _queryContract = RetrieveDbQueryContract(_stackFrame);
var _serviceContract = RetrieveDataServiceContract(_stackFrame);
VerifyQueryContract(_queryContract);
VerifyServiceContract(_serviceContract);
using (var _operationContext = new DbQueryOperationContext())
{
InitializeRequiredProperties(_operationContext, _queryContract);
var _memberDescriptor = _operationContext.DescriptorManager.GetDescriptor(_entity);
var _operatingSession = _operationContext.CreateSession(_serviceContract, _queryContract.QueryAction);
var _queryContext = _operatingSession.CreateDbQueryContext(_memberDescriptor);
InitializeRequiredProperties(_queryContext, _queryContract);
_operatingSession.Open();
if (default(Action <IDbQueryParameterizable>) != predicate)
{
predicate(_queryContext);
}
var _queryResult = _queryContext.Execute();
if (null != _queryResult && _queryResult.HasResult)
{
var _resultMapper = _operatingSession.CreateDbQueryResultMapper(_memberDescriptor);
_resultMapper.Map(_entity, _queryResult);
}
_operatingSession.Close();
if (_operationContext.HasErrors)
{
return(new OperationResult <TEntity>(_entity, _operationContext.Errors));
}
}
return(new OperationResult <TEntity>(_entity));
}
/// <summary>
///
/// </summary>
/// <param name="predicate"></param>
/// <returns></returns>
protected OperationResult <IDbQueryResult> ExecuteQuery(Action <IDbQueryParameterizable> predicate = default(Action <IDbQueryParameterizable>))
{
var _queryResult = (IDbQueryResult)null;
var _stackFrame = StackTraceHelpers.GetStackFrameByIndex(1);
var _queryContract = RetrieveDbQueryContract(_stackFrame);
var _serviceContract = RetrieveDataServiceContract(_stackFrame);
VerifyQueryContract(_queryContract);
VerifyServiceContract(_serviceContract);
using (var _operationContext = new DbQueryOperationContext())
{
InitializeRequiredProperties(_operationContext, _queryContract);
var _operatingSession = _operationContext.CreateSession(_serviceContract, _queryContract.QueryAction);
var _queryContext = _operatingSession.CreateDbQueryContext(_serviceContract);
InitializeRequiredProperties(_queryContext, _queryContract);
_operatingSession.Open();
if (default(Action <IDbQueryParameterizable>) != predicate)
{
predicate(_queryContext);
}
_queryResult = _queryContext.Execute();
_operatingSession.Close();
if (_operationContext.HasErrors)
{
return(new OperationResult <IDbQueryResult>(_queryResult, _operationContext.Errors));
}
}
return(new OperationResult <IDbQueryResult>(_queryResult));
}
/// <summary>
///
/// </summary>
/// <param name="operationContext"></param>
public DbQueryPrinciple(DbQueryOperationContext operationContext)
{
_operationContext = operationContext;
}
/// <summary>
///
/// </summary>
/// <param name="operationContext"></param>
/// <param name="serviceContract"></param>
public DbConnection(DbQueryOperationContext operationContext, IDataServiceContract serviceContract)
: base(operationContext)
{
_contract = serviceContract;
_connection = new SqlConnection(_contract.Host);
}
/// <summary>
///
/// </summary>
/// <param name="operationContext"></param>
/// <param name="connection"></param>
/// <param name="queryAction"></param>
public DbQueryOperatingSession(DbQueryOperationContext operationContext, DbConnection connection, DbQueryActions queryAction)
: base(operationContext)
{
_connection = connection;
_queryAction = queryAction;
}
/// <summary>
///
/// </summary>
/// <param name="operationContext"></param>
public DbQueryXmlSerializer(DbQueryOperationContext operationContext)
: base(operationContext)
{
}
