/// <summary>
/// Initializes the given <paramref name="column"/>.
/// </summary>
/// <param name="context">The <see cref="IMansionContext"/>.</param>
/// <param name="column">The <see cref="PropertyColumn"/> which to initialze.</param>
/// <param name="properties">The properties.</param>
/// <exception cref="ArgumentNullException">Thrown if one of the parameters is null.</exception>
protected static void Initialize(IMansionContext context, PropertyColumn column, IPropertyBag properties)
{
// validate arguments
if (context == null)
throw new ArgumentNullException("context");
if (column == null)
throw new ArgumentNullException("column");
if (properties == null)
throw new ArgumentNullException("properties");
// get the allow null flag
column.AllowNullValue = properties.Get(context, "allowNullValue", false);
// check if there is an expression
string expressionString;
if (properties.TryGet(context, "expression", out expressionString))
{
var expressionService = context.Nucleus.ResolveSingle<IExpressionScriptService>();
column.HasExpression = true;
column.Expression = expressionService.Parse(context, new LiteralResource(expressionString));
}
// get the default value
string defaultValue;
if (properties.TryGet(context, "defaultValue", out defaultValue))
{
var expressionService = context.Nucleus.ResolveSingle<IExpressionScriptService>();
var defaultValueExpression = expressionService.Parse(context, new LiteralResource(defaultValue));
column.DefaultValue = defaultValueExpression.Execute<object>(context);
column.HasDefaultValue = true;
}
}
/// <summary>
/// Creates a <see cref="DateTimePropertyColumn"/>.
/// </summary>
/// <param name="context">The <see cref="IMansionContext"/>.</param>
/// <param name="propertyName">The name of the property.</param>
/// <param name="columnName">The name of the column.</param>
/// <param name="properties">The properties of the column.</param>
/// <returns>Returns the created column.</returns>
/// <exception cref="ArgumentNullException">Thrown if one of the parameters is null.</exception>
public static PropertyColumn CreatePropertyColumn(IMansionContext context, string propertyName, string columnName, IPropertyBag properties)
{
// validate arguments
if (context == null)
throw new ArgumentNullException("context");
if (string.IsNullOrEmpty(propertyName))
throw new ArgumentNullException("propertyName");
if (string.IsNullOrEmpty(columnName))
throw new ArgumentNullException("columnName");
if (properties == null)
throw new ArgumentNullException("properties");
// create the column
var column = new PropertyColumn(propertyName, columnName);
// init the column from the properties
Initialize(context, column, properties);
// return the created column
return column;
}