/// <summary>
/// Constructor.
/// </summary>
protected WorkUnit(EntityType entityType, object entity, EntityField[] fields, object[] values)
{
if (entityType == null)
{
throw new ArgumentNullException("entityType");
}
if (entity == null)
{
throw new ArgumentNullException("entity");
}
if (fields == null)
{
throw new ArgumentNullException("fields");
}
if (values == null)
{
throw new ArgumentNullException("values");
}
// check...
if (fields.Length != values.Length)
{
throw ExceptionHelper.CreateLengthMismatchException("fields", "values", fields.Length, values.Length);
}
// check...
entityType.AssertIsOfType(entity);
// set...
_entityType = entityType;
_entity = entity;
_fields = fields;
_values = values;
}
/// <summary>
/// Asserts that we can support the provided entity.
/// </summary>
/// <param name="entity"></param>
private void AssertEntity(object entity)
{
if (entity == null)
{
throw new ArgumentNullException("entity");
}
if (EntityType == null)
{
throw new ArgumentNullException("EntityType");
}
EntityType.AssertIsOfType(entity);
}
public static bool CompareEntityKeyValues(object entity1, object entity2)
{
if(entity1 == null)
throw new ArgumentNullException("entity1");
if(entity2 == null)
throw new ArgumentNullException("entity2");
// get...
EntityType et = EntityType.GetEntityType(entity1, OnNotFound.ThrowException);
if(et == null)
throw new InvalidOperationException("et is null.");
et.AssertIsOfType(entity2);
// get...
object[] key1 = et.Storage.GetKeyValues(entity1);
if(key1 == null)
throw new ArgumentNullException("key1");
object[] key2 = et.Storage.GetKeyValues(entity2);
if(key2 == null)
throw new ArgumentNullException("key2");
// compare...
return CompareKeys(key1, key2);
}
public override void DemandLoad(object entity, EntityField[] fields)
{
if (entity == null)
{
throw new ArgumentNullException("entity");
}
if (fields == null)
{
throw new ArgumentNullException("fields");
}
if (fields.Length == 0)
{
throw ExceptionHelper.CreateZeroLengthArgumentException("fields");
}
// check...
if (EntityType == null)
{
throw new ArgumentNullException("EntityType");
}
EntityType.AssertIsOfType(entity);
// new?
if (this.Storage.IsNew(entity) == true)
{
throw new InvalidOperationException("Entity is new.");
}
if (this.Storage.IsDeleted(entity, false) == true)
{
throw new InvalidOperationException("Entity has been physically deleted.");
}
// create a filter...
object[] keyValues = this.Storage.GetKeyValues(entity);
SqlFilter filter = SqlFilter.CreateGetByIdFilter(this.EntityType, keyValues);
// jm - 14-07-2006 - Hacked - Matt to sort out
if (filter == null)
{
throw new InvalidOperationException("filter is null.");
}
filter.IgnorePartitioning = true;
// clear the fields...
filter.Fields.Clear();
filter.Fields.AddRange(fields);
// get values...
object[] values = filter.ExecuteValues();
if (values == null)
{
throw new ArgumentNullException("values");
}
// check...
if (values.Length != fields.Length)
{
throw ExceptionHelper.CreateLengthMismatchException("values", "fields", values.Length, fields.Length);
}
// init and set...
this.Storage.BeginInitialize(entity);
try
{
for (int index = 0; index < fields.Length; index++)
{
// value...
EntityField field = fields[index];
if (field == null)
{
throw new InvalidOperationException("field is null.");
}
object value = values[index];
// encrypted?
//if(field.IsEncrypted)
//{
// if(value == null)
// value = new EncryptedValue(null, (byte[])null);
// else if(value is DBNull)
// value = new EncryptedValue(typeof(DBNull), (byte[])null);
// else
// {
// // switch...
// switch(field.DBType)
// {
// case DbType.String:
// case DbType.StringFixedLength:
// case DbType.AnsiString:
// case DbType.AnsiStringFixedLength:
// value = new EncryptedValue(field.Type, (string)value);
// break;
// default:
// throw new NotSupportedException(string.Format("Cannot handle '{0}' ({1}).", field.DBType, field.DBType.GetType()));
// }
// }
//}
if ((field.DBType == DbType.AnsiStringFixedLength || field.DBType == DbType.StringFixedLength) && value is string)
{
value = ((string)value).TrimEnd();
}
// set...
this.Storage.SetValue(entity, field, value, SetValueReason.DemandLoad);
}
}
finally
{
this.Storage.EndInitialize(entity);
}
}