public IList <T> GetList <T>(Criteria criteria, params SortInfo[] orderBy)
where T : new()
{
PreconditionAssert.IsNotNull(criteria, ErrorMessages.NullReferenceException);
try
{
SelectCommandCreator dbCommandCreator = new SelectCommandCreator(dbAccess);
dbCommandCreator.OrderBy = orderBy;
dbCommandCreator.ObjectType = typeof(T);
dbCommandCreator.Cri = criteria;
dbCommandCreator.SelectType = SelectType.GetList;
DbCommand dbCommand = dbCommandCreator.GetDbCommand();
DataTable dt = dbAccess.GetDataTableByCommand(dbCommand);
return(ORMHelper.DataTableToList <T>(dt));
}
catch (Exception ex)
{
StringBuilder errMsgBuilder = new StringBuilder();
errMsgBuilder.AppendLine("Select object list by criteria error, detail:");
errMsgBuilder.AppendLine("Criteria Info:");
errMsgBuilder.AppendLine(ORMHelper.GetCriteriaMessage(criteria));
errMsgBuilder.AppendLine("Sort Info:");
errMsgBuilder.AppendLine(ORMHelper.GetOrderInfoMessage(orderBy));
throw new ORMException(errMsgBuilder.ToString(), ex);
}
}
public T GetByKeys <T>(T entity) where T : new()
{
PreconditionAssert.IsNotNull(entity, ErrorMessages.NullReferenceException);
ORMHelper.EntityIsMappingDatabase(entity.GetType(), ErrorMessages.EntityMappingError);
try
{
ORMHelper.CheckEntityKey(entity);
SelectCommandCreator dbCommandCreator = new SelectCommandCreator(dbAccess);
dbCommandCreator.Entity = entity;
dbCommandCreator.SelectType = SelectType.GetOneByEntityKey;
DbCommand dbCommand = dbCommandCreator.GetDbCommand();
DataTable dt = dbAccess.GetDataTableByCommand(dbCommand);
if (dt.Rows.Count == 0)
{
return(default(T));
}
else if (dt.Rows.Count == 1)
{
return(ORMHelper.ConvertDataRowToEntity <T>(dt.Rows[0]));
}
else
{
throw new ORMException(ErrorMessages.ResultNotUniqueMessage);
}
}
catch (Exception ex)
{
throw new ORMException("Get object by keys error, keys value:\n\t" + ORMHelper.GetEntityInfoMessage(entity), ex);
}
}
public IList <T> GetAll <T>(int pageIndex, int pageSize, out int totalCount, params SortInfo[] orderBy) where T : new()
{
PreconditionAssert.IsNotNull(orderBy, ErrorMessages.NullReferenceException);
ORMHelper.EntityIsMappingDatabase(typeof(T), ErrorMessages.EntityMappingError);
try
{
SelectCommandCreator dbCommandCreator = new SelectCommandCreator(dbAccess);
dbCommandCreator.ObjectType = typeof(T);
dbCommandCreator.OrderBy = orderBy;
dbCommandCreator.SelectType = SelectType.GetAll;
dbCommandCreator.NeedPaged = true;
dbCommandCreator.PageIndex = pageIndex + 1;
dbCommandCreator.PageSize = pageSize;
DbCommand dbCommand = dbCommandCreator.GetDbCommand();
DataTable dt = dbAccess.GetDataTableByCommand(dbCommand);
if (dt.Rows.Count > 0)
{
totalCount = (int)dt.Rows[0]["TotalCount"];
}
else
{
totalCount = 0;
}
return(ORMHelper.DataTableToList <T>(dt));
}
catch (Exception ex)
{
throw new ORMException("Get all object list error, detail:\n\t" + ORMHelper.GetOrderInfoMessage(orderBy), ex);
}
}
internal virtual void Init(Type objectType, IDBAccess dbAccess)
{
TypeSchema entityInfo = ORMSchemaCache.GetTypeSchema(objectType);
SchemaItem fieldInfo = entityInfo.GetFieldInfoByPropertyName(this._propertyName);
if (fieldInfo == null)
{
throw new ArgumentException(string.Format("{0} - Property \"{1}\" not define a mapping field.", this.GetType(), _propertyName));
}
Type type = fieldInfo.ProInfo.PropertyType;
type = Nullable.GetUnderlyingType(type) ?? type;
this._dbType = ORMHelper.GetDbTypeByName(type);
this._fieldName = fieldInfo.MappingFieldAttribute.FieldName;
this._dbAccess = dbAccess;
}
public int GetAllCount <T>()
{
ORMHelper.EntityIsMappingDatabase(typeof(T), ErrorMessages.EntityMappingError);
try
{
SelectCommandCreator dbCommandCreator = new SelectCommandCreator(dbAccess);
dbCommandCreator.ObjectType = typeof(T);
dbCommandCreator.SelectType = SelectType.GetAllCount;
DbCommand dbCommand = dbCommandCreator.GetDbCommand();
return((int)dbAccess.GetRC1ByCommand(dbCommand));
}
catch (Exception ex)
{
throw new ORMException("Get object all count error.", ex);
}
}
protected DbParameter GetDbParameter(PropertyInfo fieldProperty, object entity)
{
DbParameter parameter = DbAccess.CreateDbParameter();
Type tempType = fieldProperty.PropertyType;
if (Nullable.GetUnderlyingType(tempType) != null)//如果是 int? 类型则进行处理
{
tempType = Nullable.GetUnderlyingType(tempType);
}
parameter.ParameterName = "@" + fieldProperty.Name;
parameter.DbType = ORMHelper.GetDbTypeByName(tempType);
object value = fieldProperty.GetValue(entity, null);
parameter.Value = value ?? DBNull.Value; //如果对象的属性为null，则把此参数设置为DBNull
return(parameter);
}
public void Add(object entity)
{
//断言参入的参数为null或者空字符串（RErrorCode.NullReference - 0x00000001）
PreconditionAssert.IsNotNull(entity, ErrorMessages.NullReferenceException);
ORMHelper.EntityIsMappingDatabase(entity.GetType(), ErrorMessages.EntityMappingError);
ORMHelper.CheckEntityIsNotReadOnly(entity.GetType(), ErrorMessages.EntityReadOnly);
try
{
InsertCommandCreator icc = new InsertCommandCreator(dbAccess);
icc.Entity = entity;
DbCommand dbCommand = icc.GetDbCommand();
dbAccess.ExecCommand(dbCommand);
}
catch (Exception ex)
{
throw new ORMException("Add entity failed, detail:\n\t" + ORMHelper.GetEntityInfoMessage(entity), ex);
}
}
public void Modify(object entity)
{
PreconditionAssert.IsNotNull(entity, ErrorMessages.NullReferenceException);
ORMHelper.EntityIsMappingDatabase(entity.GetType(), ErrorMessages.EntityMappingError);
ORMHelper.CheckEntityIsNotReadOnly(entity.GetType(), ErrorMessages.EntityReadOnly);
try
{
ModifyCommandCreator mcc = new ModifyCommandCreator(dbAccess);
mcc.Entity = entity;
DbCommand dbCommand = mcc.GetDbCommand();
dbAccess.ExecCommand(dbCommand);
}
catch (Exception ex)
{
throw new ORMException("Update entity failed, detail:\n\t" + ORMHelper.GetEntityInfoMessage(entity), ex);
}
}
protected DbCommand GetDbCommandByKeyValue(TypeSchema entityInfo, object keyValue)
{
DbCommand dbCommand = DbAccess.CreateDbCommand();
foreach (SchemaItem mfi in entityInfo.GetKeyFieldInfos())
{
Type type = mfi.ProInfo.PropertyType;
type = Nullable.GetUnderlyingType(type) ?? type;
DbType dbType = ORMHelper.GetDbTypeByName(type);
DbParameter parameter = DbAccess.CreateDbParameter();
parameter.ParameterName = "@" + mfi.ProInfo.Name;
parameter.DbType = dbType;
//parameter.Value = Convert.ChangeType(keyValue, fieldProperty.PropertyType);
parameter.Value = Convert.ChangeType(keyValue, type);
dbCommand.Parameters.Add(parameter);
}
return(dbCommand);
}
public IList <T> GetAll <T>(params SortInfo[] orderBy) where T : new()
{
PreconditionAssert.IsNotNull(orderBy, ErrorMessages.NullReferenceException);
ORMHelper.EntityIsMappingDatabase(typeof(T), ErrorMessages.EntityMappingError);
try
{
SelectCommandCreator dbCommandCreator = new SelectCommandCreator(dbAccess);
dbCommandCreator.ObjectType = typeof(T);
dbCommandCreator.OrderBy = orderBy;
dbCommandCreator.SelectType = SelectType.GetAll;
DbCommand dbCommand = dbCommandCreator.GetDbCommand();
DataTable dt = dbAccess.GetDataTableByCommand(dbCommand);
return(ORMHelper.DataTableToList <T>(dt));
}
catch (Exception ex)
{
throw new ORMException("Get all object list error, detail:\n\t" + ORMHelper.GetOrderInfoMessage(orderBy), ex);
}
}
public IList <T> GetList <T>(Criteria criteria, int pageIndex, int pageSize, out int totalCount, params SortInfo[] orderBy)
where T : new()
{
PreconditionAssert.IsNotNull(criteria, ErrorMessages.NullReferenceException);
try
{
SelectCommandCreator dbCommandCreator = new SelectCommandCreator(dbAccess);
dbCommandCreator.OrderBy = orderBy;
dbCommandCreator.ObjectType = typeof(T);
dbCommandCreator.Cri = criteria;
dbCommandCreator.SelectType = SelectType.GetList;
dbCommandCreator.NeedPaged = true;
dbCommandCreator.PageIndex = pageIndex + 1;
dbCommandCreator.PageSize = pageSize;
DbCommand dbCommand = dbCommandCreator.GetDbCommand();
DataTable dt = dbAccess.GetDataTableByCommand(dbCommand);
if (dt.Rows.Count > 0)
{
totalCount = (int)dt.Rows[0]["TotalCount"];
}
else
{
totalCount = 0;
}
return(ORMHelper.DataTableToList <T>(dt));
}
catch (Exception ex)
{
StringBuilder errMsgBuilder = new StringBuilder();
errMsgBuilder.AppendLine("Select object list by criteria error with page, detail:");
errMsgBuilder.AppendLine("Criteria Info:");
errMsgBuilder.AppendLine(ORMHelper.GetCriteriaMessage(criteria));
errMsgBuilder.AppendLine("Page Info:");
errMsgBuilder.AppendLine("PageIndex:" + pageIndex + "; PageSize:" + pageSize);
errMsgBuilder.AppendLine("Sort Info:");
errMsgBuilder.AppendLine(ORMHelper.GetOrderInfoMessage(orderBy));
throw new ORMException(errMsgBuilder.ToString(), ex);
}
}
public int GetCount(object entity, string[] filterProterties)
{
PreconditionAssert.IsNotNull(entity, ErrorMessages.NullReferenceException);
ORMHelper.EntityIsMappingDatabase(entity.GetType(), ErrorMessages.EntityMappingError);
try
{
SelectCommandCreator dbCommandCreator = new SelectCommandCreator(dbAccess);
dbCommandCreator.Entity = entity;
dbCommandCreator.FilterProterties = filterProterties;
dbCommandCreator.SelectType = SelectType.GetCount;
DbCommand dbCommand = dbCommandCreator.GetDbCommand();
return((int)dbAccess.GetRC1ByCommand(dbCommand));
}
catch (Exception ex)
{
StringBuilder errMsgBuilder = new StringBuilder();
errMsgBuilder.AppendLine("Get object count by entity error, detail:");
errMsgBuilder.AppendLine("Entity Info:");
errMsgBuilder.AppendLine(ORMHelper.GetEntityInfoMessage(entity));
errMsgBuilder.AppendLine("Filter Proterties:");
errMsgBuilder.AppendLine(string.Join(",", filterProterties));
throw new ORMException(errMsgBuilder.ToString(), ex);
}
}
public T GetByKey <T>(object keyValue)
where T : new()
{
//断言参入的参数为null或者空字符串（RErrorCode.ArgmentesError - 0x00000014）
PreconditionAssert.IsNotNull(keyValue, ErrorMessages.NullReferenceException);
PreconditionAssert.IsNotNullOrEmpty(keyValue.ToString(), ErrorMessages.NullReferenceException);
ORMHelper.EntityIsMappingDatabase(typeof(T), ErrorMessages.EntityMappingError);
try
{
SelectCommandCreator dbCommandCreator = new SelectCommandCreator(dbAccess);
dbCommandCreator.ObjectType = typeof(T);
dbCommandCreator.KeyValue = keyValue;
dbCommandCreator.SelectType = SelectType.GetOneByKeyValue;
DbCommand dbCommand = dbCommandCreator.GetDbCommand();
DataTable dt = dbAccess.GetDataTableByCommand(dbCommand);
if (dt.Rows.Count == 0)
{
return(default(T));
}
else if (dt.Rows.Count == 1)
{
return(ORMHelper.ConvertDataRowToEntity <T>(dt.Rows[0]));
}
else
{
//引发数据获取结果错误
throw new ORMException(ErrorMessages.ResultNotUniqueMessage);
}
}
catch (Exception ex)
{
//其他未处理的异常
throw new ORMException("Get object by key error - " + keyValue, ex);
}
}
