/// <summary>
/// This method is responsible for translanting between coded domain names
/// and their values, setting into UnderlyingObject the correct value.
/// </summary>
/// <remarks>
/// Imagine a ICodedDomain like:
/// 1 = "Alphanumeric"
/// 2 = "Geographic"
///
/// This method will aways set the value to 1 when passed
/// "Alphanumeric"
/// </remarks>
/// <exception cref="ActiveRecrdAttributeException"></exception>
/// <param name="wrapper"></param>
/// <param name="propertyName"></param>
/// <param name="displayValue"></param>
/// <returns></returns>
private static void SetDisplayValue(this IActiveRecord wrapper, FieldAttribute fieldAtt, string displayValue)
{
if (wrapper.UnderlyingObject == null)
FetchUnderlyingObject(wrapper);
if (!(fieldAtt is DomainFieldAttribute))
throw new ActiveRecordAttributeException(wrapper.GetType(), "O atributo não é tipo domínio.");
DomainFieldAttribute domainField = fieldAtt as DomainFieldAttribute;
ICodedValueDomain domain = wrapper.UnderlyingObject.Fields.get_Field(domainField.Index).Domain as ICodedValueDomain;
if (domain == null)
throw new ActiveRecordAttributeException(wrapper.GetType(), "Não foi possível localizar o domínio.");
for (var i = 0; i <= domain.CodeCount - 1; i++)
{
if (domain.get_Name(i) == displayValue)
{
object codedValue = domain.get_Value(i);
wrapper.UnderlyingObject.set_Value(domainField.Index, codedValue);
}
}
}
/// <summary>
/// This method is responsible for translating between coded domain values
/// and their names, returning the correct name.
/// </summary>
/// Imagine a ICodedDomain like:
/// 1 = "Alphanumeric"
/// 2 = "Geographic"
///
/// This method will always return "Alphanumeric" for the value 1,
/// fetched from UnderlyingObject
/// </remarks>
/// <exception cref="ActiveRecrdAttributeException"></exception>
/// <param name="wrapper">IActiveRecord</param>
/// <param name="propertyName">string</param>
/// <returns>string</returns>
private static string GetDisplayValue(this IActiveRecord wrapper, FieldAttribute fieldAtt)
{
if (wrapper.UnderlyingObject == null)
FetchUnderlyingObject(wrapper);
if (!(fieldAtt is DomainFieldAttribute))
throw new ActiveRecordAttributeException(wrapper.GetType(), "Não é possível obter o atributo de domínio.");
DomainFieldAttribute domainField = fieldAtt as DomainFieldAttribute;
ICodedValueDomain domain = wrapper.UnderlyingObject.Fields.get_Field(domainField.Index).Domain as ICodedValueDomain;
if (domain == null)
throw new ActiveRecordAttributeException(wrapper.GetType(),
String.Format("Não foi possível localizar o domínio {0}.", domainField.DomainName));
string codedValue = wrapper.UnderlyingObject.get_Value(domainField.Index).ToString();
string displayValue = String.Empty;
for (int i = 0; i <= domain.CodeCount - 1; i++)
{
if (domain.get_Value(i).ToString() == codedValue)
{
displayValue = domain.get_Name(i);
break;
}
}
if (displayValue == String.Empty)
return codedValue;
else
return displayValue;
}
/// <summary>
/// Gets the other right side of the relationship
/// </summary>
/// <param name="wrapper">IActiveRecord</param>
/// <param name="fieldAttribute">FieldAttribute</param>
/// <returns>object</returns>
private static object OneToOne(this IActiveRecord wrapper, FieldAttribute relationshipAttribute)
{
if (!(relationshipAttribute is RelationshipAttribute))
throw new ActiveRecordAttributeException(wrapper.GetType(),
"O atributo não é do tipo HasMany. Não foi possível retornar os objetos relacionados.");
RelationshipAttribute hasMany = relationshipAttribute as RelationshipAttribute;
object[] customAttributes = hasMany.ClassType.GetCustomAttributes(typeof(RepositoryAttribute), true);
if (customAttributes.Length != 1)
throw new ActiveRecordAttributeException(hasMany.ClassType, "Não foi possível encontrar o controlador da classe.");
RepositoryAttribute controlled = (RepositoryAttribute)customAttributes[0];
object relatedController = Activator.CreateInstance(controlled.ControllerType);
if (relatedController == null)
throw new ActiveRecordAttributeException(controlled.ControllerType, "Não foi possível instanciar o controller.");
PrimaryFieldAttribute pkAtt = wrapper.GetPrimaryKeyDefinition();
if (pkAtt == null)
throw new ActiveRecordAttributeException(wrapper.GetType(), "Não foi possível encontrar a chave primária da classe.");
IQueryFilter filter = new QueryFilterClass();
filter.WhereClause = String.Format(pkAtt.QuoteValue ? "{0} = '{1}'" : "{0} = {1}", hasMany.FieldName, wrapper.UnderlyingObject.get_Value(pkAtt.Index));
// prepare the method for invoke
// check if the method is lazy or not
MethodInfo singleMethod = null;
singleMethod = controlled.ControllerType.GetMethod(hasMany.Lazy ? "Filter" : "FilterLazy");
var parameters = new object[1];
parameters[0] = filter;
// invoke and return
return singleMethod.Invoke(relatedController, parameters);
}
private static object FindRelatedObjects(this IActiveRecord wrapper, FieldAttribute relationshipAttribute)
{
List<IActiveRecord> result;
if (!(relationshipAttribute is RelationshipAttribute))
throw new ActiveRecordAttributeException(wrapper.GetType(),
"O atributo não é do tipo HasMany. Não foi possível retornar os objetos relacionados.");
var attribute = relationshipAttribute as RelationshipAttribute;
if (attribute.GetType() == typeof(HasManyAttribute))
return HasMany(wrapper, relationshipAttribute);
if (attribute.GetType() == typeof(OneToOneAttribute))
return OneToOne(wrapper, relationshipAttribute);
if (attribute.GetType() == typeof(BelongsToAttribute))
return Belongs(wrapper, relationshipAttribute);
throw new ActiveRecordAttributeException(wrapper.GetType(), "Não foi possível buscar os objetos relacionados.");
}
/// <summary>
/// Gets the Owner of a specific IActiveRecord
/// </summary>
/// <param name="wrapper">IActiveRecord</param>
/// <param name="propertyName">string</param>
/// <returns>object</returns>
private static object Belongs(this IActiveRecord wrapper, FieldAttribute relationshipAttribute)
{
if (!(relationshipAttribute is RelationshipAttribute))
throw new ActiveRecordAttributeException(wrapper.GetType(),
"O atributo não é do tipo HasMany. Não foi possível retornar os objetos relacionados.");
var attribute = relationshipAttribute as BelongsToAttribute;
object[] customAttributes = attribute.ClassType.GetCustomAttributes(typeof(RepositoryAttribute), true);
if (customAttributes.Length != 1)
throw new ActiveRecordAttributeException(attribute.ClassType, "Não foi possível encontrar o controlador da classe.");
RepositoryAttribute controlled = (RepositoryAttribute)customAttributes[0];
object relatedController = Activator.CreateInstance(controlled.ControllerType);
if (relatedController == null)
throw new ActiveRecordAttributeException(controlled.ControllerType, "Não foi possível instanciar o controller.");
IQueryFilter filter = new QueryFilterClass();
filter.WhereClause = String.Format(attribute.QuoteValue ? "{0} = '{1}'" : "{0} = {1}", attribute.FieldName, wrapper.UnderlyingObject.get_Value(attribute.ParentValueFieldIndex));
// prepare the method for invoke
// check if the method is lazy or not
MethodInfo singleMethod = null;
singleMethod = controlled.ControllerType.GetMethod("SingleByPrimaryKey");
var parameters = new object[1];
parameters[0] = wrapper.UnderlyingObject.get_Value(attribute.ParentValueFieldIndex);
//case not exist value in foreign key, return null
if (parameters[0] == null || parameters[0].ToString().Equals(""))
return null;
// invoke and return
return singleMethod.Invoke(relatedController, parameters);
}
public static void SetCascadingValue(this IActiveRecord wrapper, FieldAttribute fieldAtt, object value)
{
throw new NotImplementedException();
}
public static void SetBlobValue(this IActiveRecord wrapper, FieldAttribute attribute, object value)
{
if (!(value is IPersistStream))
throw new ActiveRecordException("Nâo é possível persistir um objeto que não implementa IPersistStream.");
IMemoryBlobStream memStream = new MemoryBlobStreamClass();
IObjectStream objStream = new ObjectStreamClass();
objStream.Stream = memStream;
IPersistStream persist = (IPersistStream)value;
persist.Save(memStream, 0);
wrapper.UnderlyingObject.set_Value(attribute.Index, memStream);
}
public static object GetBlobValue(this IActiveRecord wrapper, FieldAttribute attribute)
{
IMemoryBlobStream blobStream = wrapper.UnderlyingObject.get_Value(attribute.Index) as IMemoryBlobStream;
if (blobStream == null)
return null;
IObjectStream stream = new ObjectStreamClass() { Stream = blobStream };
IPersistStream blob = new PropertySetClass();
blob.Load(blobStream);
return blob as IPropertySet;
}
