/// <summary>
/// Attempts to set the fields value.
/// </summary>
/// <param name="value">new value of the field</param>
/// <exception cref="MetadataSystemException">Field type mismatch.</exception>
/// <exception cref="MetadataSystemException">Field not found.</exception>
public void SetFieldValue(string fieldName, object value)
{
Type type = value.GetType();
int index = Array.IndexOf <string>(indices, fieldName);
if (index != -1)
{
MetadataField field = fields[index];
if (field.TypeOfValue == type)
{
field.SetValue(value);
}
else
{
// Field type mismatch.
throw MetadataSystemException.TypeMismatch(name, fieldName, type, field.TypeOfValue);
}
}
else
{
// Field not found.
throw MetadataSystemException.FieldNotFound(name, fieldName);
}
}
/// <summary>
/// Creates new instance of metadata object by copying the
/// fields of another object.
/// </summary>
/// <param name="name">name of the new object, needs to be unique</param>
/// <param name="other">object whose fields will be copied</param>
/// <exception cref="MetadataSystemException">Name not unique.</exception>
public MetadataObject(string name, MetadataObject other)
: this(name, other.fields)
{
if (name == other.name)
{
throw MetadataSystemException.NameNotUnique(name);
}
}
/// <summary>
/// Finds object with given name.
/// </summary>
/// <param name="name">name of the object</param>
/// <returns>metadata object</returns>
/// <exception cref="MetadataSystemException">Invalid name.</exception>
public MetadataObject GetObject(string objectsName)
{
int index = Array.IndexOf <string>(indices, objectsName);
if (index != -1)
{
return(objects[index]);
}
// Invalid name.
throw MetadataSystemException.ObjectNotFound(objectsName, name);
}
public MetadataObjectGroup GetGroup(string name)
{
int index = Array.IndexOf(indices, name);
if (index != -1)
{
return(groups[index]);
}
// Group not found.
throw MetadataSystemException.ObjectGroupFound(name);
}
/// <summary>
/// Attempts to read a field value from this object.
/// </summary>
/// <typeparam name="T">type of the field</typeparam>
/// <param name="fieldName">name of the field</param>
/// <returns>fields value</returns>
/// <exception cref="MetadataSystemException">Field type mismatch.</exception>
/// <exception cref="MetadataSystemException">Field not found.</exception>
public T GetFieldValue <T>(string fieldName)
{
Type type = typeof(T);
int index = Array.IndexOf <string>(indices, fieldName);
if (index != -1)
{
MetadataField field = fields[index];
if (field.TypeOfValue == type)
{
return(field.GetValue <T>());
}
// Field type mismatch.
throw MetadataSystemException.TypeMismatch(name, fieldName, type, field.TypeOfValue);
}
// Field not found.
throw MetadataSystemException.FieldNotFound(name, fieldName);
}
