public QueryOptions()
{
this.Ordering = new QueryOrdering();
this.Criterias = new QueryCriterias();
}
public QueryOptions(QueryOrdering ordering, QueryCriterias criterias)
{
this.Ordering = ordering;
this.Criterias = criterias;
}
public static DynamicQueryParameters Parse(QueryCriterias queryCriterias, Type entityType)
{
DynamicQueryParameters retVal = new DynamicQueryParameters();
try
{
retVal.Values = new object[queryCriterias.Count()];
int counter = 0;
for (int i = 0; i < queryCriterias.Count(); i++)
{
if (!string.IsNullOrWhiteSpace(retVal.Query))
{
retVal.Query = retVal.Query + " AND ";
}
var iterator = queryCriterias.Skip(i).Take(1).First();
string key = iterator.Key;
string value = iterator.Value;
string memberTypeName = string.Empty;
Type memberType = entityType;
foreach (var item in key.Split('.'))
{
if (memberType.GetProperty(item) != null)
{
memberType = memberType.GetProperty(item).PropertyType;
}
else if (memberType.GetField(item) != null)
{
memberType = memberType.GetField(item).FieldType;
}
else
{
throw new FrameworkException("QueryCriterias.ToDynamicQuery()", string.Format("No member found for given '{0}' property/field name.", item));
}
}
memberTypeName = memberType.Name.ToLowerInvariant();
if (memberTypeName.Contains("int") ||
memberTypeName.Contains("double") ||
memberTypeName.Contains("float") ||
memberTypeName.Contains("decimal"))
{
if (iterator.Option == CriteriaOptionEnum.Equals)
retVal.Query = retVal.Query + string.Format("{0}=@{1}", key, counter);
else if (iterator.Option == CriteriaOptionEnum.Greater)
retVal.Query = retVal.Query + string.Format("{0}>@{1}", key, counter);
else if (iterator.Option == CriteriaOptionEnum.NotEquals)
retVal.Query = retVal.Query + string.Format("{0}!=@{1}", key, counter);
else if (iterator.Option == CriteriaOptionEnum.Smaller)
retVal.Query = retVal.Query + string.Format("{0}<@{1}", key, counter);
retVal.Values[i] = decimal.Parse(value);
counter++;
}
else if (memberTypeName.Contains("bool") ||
memberTypeName.Contains("nullable"))
{
retVal.Query = retVal.Query + string.Format("{0}={1}", key, value.ToLowerInvariant() == "null" ? "null" : value);
counter++;
}
else if (memberType.IsEnum)
{
if (iterator.Option == CriteriaOptionEnum.Equals)
retVal.Query = retVal.Query + string.Format("{0}=\"{1}\"", key, value);
else if (iterator.Option == CriteriaOptionEnum.NotEquals)
retVal.Query = retVal.Query + string.Format("{0}!=\"{1}\"", key, value);
counter++;
}
else if (memberTypeName.Contains("string"))
{
if (iterator.Option == CriteriaOptionEnum.Equals)
retVal.Query = retVal.Query + string.Format("{0}.Equals(@{1})", key, counter);
else if (iterator.Option == CriteriaOptionEnum.NotEquals)
retVal.Query = retVal.Query + string.Format("!{0}.Equals(@{1})", key, counter);
else if (iterator.Option == CriteriaOptionEnum.Contains)
retVal.Query = retVal.Query + string.Format("{0}.Contains(@{1})", key, counter);
else if (iterator.Option == CriteriaOptionEnum.NotContains)
retVal.Query = retVal.Query + string.Format("!{0}.Contains(@{1})", key, counter);
retVal.Values[i] = value;
counter++;
}
else if (memberTypeName.Contains("guid"))
{
retVal.Query = retVal.Query + string.Format("{0}.Equals(@{1})", key, counter);
retVal.Values[i] = value;
counter++;
}
else
{
retVal.Query = retVal.Query + string.Format("{0}.Contains(@{1})", key, counter);
retVal.Values[i] = value;
counter++;
}
}
}
catch (Exception e)
{
var exception = new FrameworkException("QueryCriterias.ToDynamicQuery()", "An error occurred while Dynamic Query Parameter parsing.", e);
throw exception;
}
return retVal;
}
