public ITemplate GetTemplate(MigrationExpressionBase expr)
{
var expressionType = expr.GetType();
if (_templateLookup.ContainsKey(expressionType))
{
return(_templateLookup[expressionType](expr));
}
return(new BadExpressionTemplate(expressionType));
}
protected virtual bool FilterExpressions(List <MigrationExpressionBase> @from, List <MigrationExpressionBase> @to,
MigrationExpressionBase expression)
{
return(true);
}
private static bool DefaultFilter(List <MigrationExpressionBase> a, List <MigrationExpressionBase> b,
MigrationExpressionBase c)
{
return(true);
}
public DifferentialExpression(IMigrationExpression up, MigrationExpressionBase down) : this((MigrationExpressionBase)up, down)
{
}
public DifferentialExpression(MigrationExpressionBase up, MigrationExpressionBase down)
{
Up = up;
Down = down;
}
public DifferentialExpression(MigrationExpressionBase upReversible)
{
Up = upReversible;
Down = (MigrationExpressionBase)upReversible.Reverse();
}
