public DynamicEntityDefinition(string entityName, IEnumerable <FieldAttribute> fields, KeyScheme keyScheme)
{
var entityAttribute = new EntityAttribute(keyScheme);
entityAttribute.NameInStore = entityName;
this.EntityType = typeof(DynamicEntityDefinition);
this.Initialize(entityAttribute, this.EntityType);
this.Fields.AddRange(fields);
var k = this.Fields.FirstOrDefault(c => c.IsPrimaryKey);
if (k != null)
{
this.PrimaryKeyColumnName = k.FieldName;
}
}
public DynamicEntityInfo(string entityName, IEnumerable<FieldAttribute> fields, IEnumerable<ReferenceAttribute> references, KeyScheme keyScheme, EntityInfo.SerializerDelegate serializer, EntityInfo.DeserializerDelegate deserializer)
{
this.Registered = false;
this.AllowRuntimeChanges = DynamicEntityInfo.CanChangeDefinitionsAtRuntime;
if (entityName == null || entityName.Length <= 0)
throw new ArgumentException("EntityName", "A DynamicEntityInfo does not accept a null or empty EntityName");
var entityAttribute = new EntityAttribute(keyScheme);
entityAttribute.NameInStore = entityName;
this.EntityType = typeof(DynamicEntityInfo);
this.Initialize(entityAttribute, this.EntityType);
this.Serializer = serializer;
this.Deserializer = deserializer;
if (fields != null) this.Fields.AddRange(fields);
if (references != null) this.References.AddRange(references);
}
private DynamicEntityDefinition(DynamicEntityDefinition source)
{
var entityAttribute = new EntityAttribute(source.EntityAttribute.KeyScheme);
entityAttribute.NameInStore = source.EntityAttribute.NameInStore;
this.EntityType = typeof(DynamicEntityDefinition);
this.Initialize(entityAttribute, this.EntityType);
// TODO make a copy of these?
this.Fields.AddRange(source.Fields);
var k = this.Fields.FirstOrDefault(c => c.IsPrimaryKey);
if (k != null)
{
this.PrimaryKeyColumnName = k.FieldName;
}
}
protected override string GetFieldCreationAttributes(EntityAttribute attribute, FieldAttribute field, Boolean MultiplePrimaryKeys)
{
StringBuilder sb = new StringBuilder();
switch (field.DataType)
{
case DbType.AnsiString:
case DbType.AnsiStringFixedLength:
case DbType.StringFixedLength:
case DbType.String:
if (field.Length > 0)
{
sb.AppendFormat("({0}) ", field.Length);
}
else
{
sb.AppendFormat("({0}) ", DefaultStringFieldSize);
}
break;
case DbType.Decimal:
int p = field.Precision == 0 ? DefaultNumericFieldPrecision : field.Precision;
sb.AppendFormat("({0},{1}) ", p, field.Scale);
break;
}
if (field.Default != null && field.Default.Length > 0)
{
sb.AppendFormat("DEFAULT {0} ", field.Default);
}
if (field.IsPrimaryKey)
{
if (!MultiplePrimaryKeys)
{
sb.Append("PRIMARY KEY ");
}
if (attribute.KeyScheme == KeyScheme.Identity)
{
throw new NotImplementedException();
//switch (field.DataType)
//{
// case DbType.Int32:
// case DbType.UInt32:
// sb.Append(AutoIncrementFieldIdentifier + " ");
// break;
// case DbType.Guid:
// sb.Append("ROWGUIDCOL ");
// break;
// default:
// throw new FieldDefinitionException(attribute.NameInStore, field.FieldName,
// string.Format("Data Type '{0}' cannot be marked as an Identity field", field.DataType));
//}
}
}
if (!field.AllowsNulls)
{
sb.Append("NOT NULL ");
}
if (field.RequireUniqueValue)
{
sb.Append("UNIQUE ");
}
return(sb.ToString());
}
internal void Initialize(EntityAttribute entityAttribute, Type entityType)
{
EntityAttribute = entityAttribute;
EntityType = entityType;
}
internal void Initialize(EntityAttribute entityAttribute, Type entityType)
{
EntityAttribute = entityAttribute;
EntityType = entityType;
}
