/// <summary>
/// Registers the given class map to be used when mapping a row to an object.
/// </summary>
/// <param name="classMap">The class map to use.</param>
public void RegisterClassMap(ExcelClassMap classMap)
{
if (classMap == null)
{
throw new ArgumentNullException(nameof(classMap));
}
RegisterClassMap(classMap.Type, classMap);
}
/// <summary>
/// Registers the given class map to be used when mapping a row to an object.
/// </summary>
/// <param name="classMap">The class map to use.</param>
public void RegisterClassMap(ExcelClassMap classMap)
{
if (classMap == null)
{
throw new ArgumentNullException(nameof(classMap));
}
if (TryGetClassMap(classMap.Type, out ExcelClassMap _))
{
throw new ExcelMappingException($"Class map already type \"{classMap.Type.FullName}\"");
}
ClassMaps.Add(classMap);
}
/// <summary>
/// Sets the new class map used to map multiple cells in a row to the properties and fields
/// of a an object.
/// </summary>
/// <param name="classMap">The new class map used.</param>
/// <returns>The property map that invoked this method.</returns>
public ExcelClassMap <T> WithClassMap(ExcelClassMap <T> classMap)
{
if (classMap == null)
{
throw new ArgumentNullException(nameof(classMap));
}
Properties.Clear();
foreach (ExcelPropertyMap propertyMap in classMap.Properties)
{
Properties.Add(propertyMap);
}
return(this);
}
/// <summary>
/// Gets the class map registered for an object of the given type.
/// </summary>
/// <param name="classType">The type of the object to get the class map for.</param>
/// <param name="classMap">The class map for the given type if it exists, else null.</param>
/// <returns>True if a class map exists for the given type, else false.</returns>
public bool TryGetClassMap(Type classType, out ExcelClassMap classMap)
{
if (classType == null)
{
throw new ArgumentNullException(nameof(classType));
}
foreach (ExcelClassMap registeredMap in ClassMaps)
{
if (registeredMap.Type == classType)
{
classMap = registeredMap;
return(true);
}
}
classMap = null;
return(false);
}
private void CreateObjectMapGeneric <TProperty>(ExcelPropertyMap propertyMap, MemberExpression memberExpression, Stack <MemberExpression> memberExpressions)
{
ExcelPropertyMap map = Properties.FirstOrDefault(m => m.Member.Equals(memberExpression.Member));
ExcelClassMap <TProperty> objectPropertyMap;
if (map == null)
{
objectPropertyMap = new ExcelClassMap <TProperty>();
Properties.Add(new ExcelPropertyMap(memberExpression.Member, objectPropertyMap));
}
else if (!(map.Map is ExcelClassMap <TProperty> existingMap))
{
throw new InvalidOperationException($"Expression is already mapped differently as {map.GetType().ToString()}.");
}
else
{
objectPropertyMap = existingMap;
}
objectPropertyMap.CreateObjectMap(propertyMap, memberExpressions);
}
/// <summary> /// Gets the class map registered for an object of the given type. /// </summary> /// <typeparam name="T">The type of the object to get the class map for.</typeparam> /// <param name="classMap">The class map for the given type if it exists, else null.</param> /// <returns>True if a class map exists for the given type, else false.</returns> public bool TryGetClassMap <T>(out ExcelClassMap classMap) => TryGetClassMap(typeof(T), out classMap);