/// <summary>
/// Insert Data Object
/// </summary>
/// <param name="dataContext">Data Context</param>
/// <param name="table">Data Table</param>
/// <param name="newDataObject">New Data Object</param>
protected override void InsertDataObject(object dataContext, object table, object newDataObject)
{
if (newDataObject is IValidate)
{
((IValidate)newDataObject).Validate();
}
if (this.owner.RetrieveGeneratedId)
{
// look for the Provider property
PropertyInfo pi = dataContext.GetType().GetProperties().Where(p => p.PropertyType.IsSubclassOf(typeof(DbEntityProvider))).FirstOrDefault();
if (pi != null)
{
// cast the Provider
DbEntityProvider provider = (DbEntityProvider)pi.GetValue(dataContext);
// get the Mapping for the Provider
BasicMapping mapping = (BasicMapping)provider.Mapping;
// get the Mapping Entity for the data object
MappingEntity mappingEntity = mapping.GetEntity(newDataObject.GetType());
// get the primary key MemberInfo
MemberInfo primaryKeyMemberInfo = mapping.GetMappedMembers(mappingEntity).Where(m => mapping.IsPrimaryKey(mappingEntity, m)).Single();
// verify that the primary key is generated by calling the protected method IsGenerated
MethodBase isGeneratedMethod = mapping.GetType().GetMethod("IsGenerated", BindingFlags.NonPublic | BindingFlags.Instance);
bool isGeneratedId = (bool)isGeneratedMethod.Invoke(mapping, new object[] { mappingEntity, primaryKeyMemberInfo });
if (isGeneratedId)
{
// create a type array for the generic types for the Insert<T, S> method
Type[] genericTypes = new Type[] { newDataObject.GetType(), typeof(int) };
// create type for Expression<Func<T, S>>
Type functionExpressionType = Expression.GetFuncType(genericTypes);
// create a Expression Parameter for the data object type
var p1 = Expression.Parameter(newDataObject.GetType(), "instance");
// create a Lambda Expression for the Func<T, S> call ... expression example: d => d.ID
LambdaExpression expression = Expression.Lambda(functionExpressionType, Expression.Property(p1, primaryKeyMemberInfo.Name), p1);
// MethodInfo for: public static S Insert<T, S>(this IUpdatable<T> collection, T instance, Expression<Func<T, S>> resultSelector)
MethodInfo mi = typeof(IQToolkit.Updatable).GetMethods().Where(d => d.Name == "Insert" && d.IsGenericMethod && d.ReturnType.FullName == null).First();
mi = mi.MakeGenericMethod(genericTypes);
object id = mi.Invoke(null, new object[] { table, newDataObject, expression });
// set the newDataObject's primary key property
newDataObject.GetType().GetProperty(primaryKeyMemberInfo.Name).SetValue(newDataObject, (int)id);
return;
}
}
}
((IEntityTable)table).Insert(newDataObject);
}
public CompositiveMapper(BasicMapping mapping, QueryTranslator translator)
: base(mapping, translator)
{
}
public VfpBasicMapper(BasicMapping mapping, QueryTranslator translator)
: base(mapping, translator)
{
}
