/// <summary>
///
/// </summary>
/// <param name="queryContract"></param>
void VerifyQueryContract(IDbQueryContract queryContract)
{
if (null == queryContract)
{
throw new ArgumentNullException(string.Format("The attribute '{0}' is not declared in the previous section.", typeof(DbQueryOperationContractAttribute).FullName));
}
}
/// <summary>
///
/// </summary>
/// <param name="descriptor"></param>
/// <param name="queryContract"></param>
/// <returns></returns>
public IDbQueryContract CreateDbQueryContract(IEntryDescriptor descriptor, IDbQueryContract queryContract)
{
var _contractBuilder = new DbQueryContractBuilder();
_contractBuilder.Name = string.IsNullOrEmpty(queryContract.Name) ? descriptor.Name : queryContract.Name;
_contractBuilder.Schema = string.IsNullOrEmpty(queryContract.Schema) ? DbQueryContract.QUERYTEXT_SCHEMA : queryContract.Schema;
_contractBuilder.Namespace = descriptor.Namespace;
_contractBuilder.Abbreviation = queryContract.Abbreviation;
_contractBuilder.QueryAction = QueryAction;
_contractBuilder.IsElementContainable = descriptor.IsListType;
_contractBuilder.OmitsAbbreviationNaming = queryContract.OmitsAbbreviationNaming;
return(_contractBuilder.GetDbQueryContract());
}
/// <summary>
///
/// </summary>
/// <param name="queryContext"></param>
/// <param name="queryContract"></param>
void InitializeRequiredProperties(IDbQueryContext queryContext, IDbQueryContract queryContract)
{
if (null == queryContext)
{
throw new ArgumentNullException("queryContext");
}
if (null == queryContract)
{
throw new ArgumentNullException("queryContract");
}
queryContext.QueryText = queryContract.QueryText;
queryContext.QueryBehavior = queryContract.QueryBehavior;
}
/// <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>
/// <param name="operatingSession"></param>
/// <param name="entity"></param>
/// <param name="memberDescriptor"></param>
/// <param name="serviceContract"></param>
/// <param name="queryContract"></param>
protected virtual void ExecuteQueryImpl(DbQueryOperatingSession operatingSession, object entity, IEntryDescriptor memberDescriptor, IDataServiceContract serviceContract, IDbQueryContract queryContract)
{
var _queryContract = queryContract ?? operatingSession.GetDbQueryContract(memberDescriptor);
InitializeRequiredProperties(operatingSession.OperationContext, _queryContract);
var _queryContext = operatingSession.CreateDbQueryContext(serviceContract);
InitializeRequiredProperties(_queryContext, _queryContract);
var _parameterMapper = operatingSession.CreateDbQueryParameterMapper(memberDescriptor);
var _operationExecutor = operatingSession.CreateDbQueryOperationExecutor(memberDescriptor);
var _propertyValidator = operatingSession.CreateDbQueryPropertyValidator(memberDescriptor);
_propertyValidator.Validate(entity);
_parameterMapper.Map(_queryContext, entity);
_operationExecutor.Execute(entity, _queryContext);
var _queryResult = _queryContext.Execute();
if (null != _queryResult && _queryResult.HasResult)
{
var _resultMapper = operatingSession.CreateDbQueryResultMapper(memberDescriptor);
_resultMapper.Map(entity, _queryResult);
}
}
/// <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));
}
