public static IEnumerable <TSource> GreaterThanOrGreaterThanOrEqual <TSource>(
IndexDefinition <TSource> source,
BinaryExpression binaryExpression, Func <TSource, bool> predicate,
LogicalEnum logicalEnum, bool recalculateIndex = false)
{
IndexDefinition <TSource> index = (IndexDefinition <TSource>)source;
ConstantExpression constantExpression = null;
MemberExpression memberExpression = null;
object indexDefinition = null;
if (binaryExpression.Left.NodeType == ExpressionType.MemberAccess)
{
memberExpression = (MemberExpression)binaryExpression.Left;
var member = memberExpression.Member.Name;
indexDefinition = index.Find(member, IndexType.UnequalIndex, recalculateIndex);
}
else if (binaryExpression.Left.NodeType == ExpressionType.Constant)
{
constantExpression = (ConstantExpression)binaryExpression.Left;
}
if (binaryExpression.Right.NodeType == ExpressionType.MemberAccess)
{
memberExpression = (MemberExpression)binaryExpression.Right;
var member = memberExpression.Member.Name;
indexDefinition = index.Find(member, IndexType.UnequalIndex, recalculateIndex);
}
else if (binaryExpression.Right.NodeType == ExpressionType.Constant)
{
constantExpression = (ConstantExpression)binaryExpression.Right;
}
if (indexDefinition == null || constantExpression.Type != typeof(int))
{
foreach (var innerItem in index.Source.Where(predicate))
{
yield return(innerItem);
}
}
else
{
dynamic indexSource =
indexDefinition.GetType().GetProperty("IndexCollection").GetValue(indexDefinition, null);
Type typeKey = indexDefinition.GetType().GetGenericArguments()[1];
dynamic items = null;
if (logicalEnum == LogicalEnum.GreaterThanOrEqual)
{
items = indexSource.BiggerThanOrEqualEnumerator(Converting(constantExpression.Value, constantExpression.Type));
}
else
{
items = indexSource.BiggerThanEnumerator(Converting(constantExpression.Value, constantExpression.Type));
}
foreach (var item in items)
{
foreach (var inneritem in item)
{
yield return(inneritem);
}
}
}
}
public static string EnumerationToString(LogicalType serializeAs, object value)
{
LogicalEnum enumerated = (LogicalEnum)serializeAs;
return(enumerated.findName(value));
}
public static object StringToEnumeration(LogicalType type, string value)
{
LogicalEnum enumeration = (LogicalEnum)type;
return(enumeration.findValue(value));
}
