/// <summary>
/// Does a logical negation of the operator.
/// </summary>
/// <returns>The resulting operator.</returns>
public IOperator LogicallyNegate()
{
if (Operator == ExpressionType.Not)
{
return(InternalOperator);
}
InternalOperator = InternalOperator.LogicallyNegate();
return(this);
}
/// <summary>
/// Optimizes the operator based on the mapping source.
/// </summary>
/// <param name="mappingSource">The mapping source.</param>
/// <returns></returns>
public IOperator Optimize(IMappingSource mappingSource)
{
InternalOperator = InternalOperator.Optimize(mappingSource);
if (InternalOperator is null)
{
return(null !);
}
return(Operator == ExpressionType.Not ? InternalOperator.LogicallyNegate() : (this));
}
/// <summary>
/// Optimizes the operator based on the mapping source.
/// </summary>
/// <param name="mappingSource">The mapping source.</param>
public IOperator Optimize(IMappingSource mappingSource)
{
if (InternalOperator is null)
{
return(this);
}
var IsValid = mappingSource.GetChildMappings(ObjectType).Any();
InternalOperator = IsValid ?
InternalOperator.Optimize(mappingSource) :
null;
if (InternalOperator?.TypeCode != typeof(bool))
{
InternalOperator = null;
}
return(this);
}
/// <summary> /// Copies this instance. /// </summary> /// <returns>A copy of this instance.</returns> public IOperator Copy() => new UnaryOperator(InternalOperator.Copy(), Operator, TypeCode);
/// <summary> /// Sets the column names. /// </summary> /// <param name="mappingSource">The mapping source.</param> /// <param name="mapping">The mapping.</param> public void SetColumnNames(IMappingSource mappingSource, IMapping mapping) => InternalOperator?.SetColumnNames(mappingSource, mapping);
/// <summary> /// Gets the parameters associated with the operator. /// </summary> /// <returns>A list of parameters associated with the operator.</returns> public List <IParameter> GetParameters() => InternalOperator.GetParameters();
/// <summary>
/// Does a logical negation of the operator.
/// </summary>
/// <returns>The resulting operator.</returns>
public IOperator LogicallyNegate()
{
InternalOperator = InternalOperator?.LogicallyNegate();
return(this);
}
/// <summary> /// Gets the parameters associated with the operator. /// </summary> /// <returns>A list of parameters associated with the operator.</returns> public List <IParameter> GetParameters() => InternalOperator is null ? new List <IParameter>() : InternalOperator.GetParameters();
/// <summary> /// Copies this instance. /// </summary> /// <returns>A copy of this instance.</returns> public IOperator Copy() => new WhereClause <TObject>(InternalOperator?.Copy());
