public Expression GetSearchExpression()
{
try
{
var type = Convert.ChangeType(expression.Value, propertyToSearch.PropertyType);
var converted = Expression.Constant(type);
return(ComparableParserExpressionFactory.GetExpression(converted, parameterExpression, propertyToSearch, expression.Type));
}
catch (Exception)
{
return(FalseComparison.ReturnsFalse);
}
}
public static Expression GetExpression(ConstantExpression value, ParameterExpression parameterExpression, PropertyInfo propertyToSearch, ComparisonType comparisonType)
{
switch (comparisonType)
{
case ComparisonType.NotEquals:
case ComparisonType.Equals:
case ComparisonType.GreaterThanOrEquals:
case ComparisonType.GreaterThan:
case ComparisonType.LessThanOrEquals:
case ComparisonType.LessThan:
return(ComparableParserExpressionFactory.GetExpression(value, parameterExpression, propertyToSearch, comparisonType));
case ComparisonType.StartsWith:
return(GetLowweredExpression(value, parameterExpression, propertyToSearch, "StartsWith", new[] { typeof(string) }));
case ComparisonType.EndsWith:
return(GetLowweredExpression(value, parameterExpression, propertyToSearch, "EndsWith", new[] { typeof(string) }));
default:
return(GetLowweredExpression(value, parameterExpression, propertyToSearch, "StartsWith", new[] { typeof(string) }));
}
}