internal static QueryFilter SimplifyFilter(QueryFilter filter)
{
if (filter == null)
{
return(null);
}
if (filter.IsAtomic)
{
return(filter);
}
if (!(filter is NotFilter) && !(filter is CompositeFilter))
{
return(filter);
}
NotFilter notFilter = filter as NotFilter;
if (notFilter != null)
{
QueryFilter filter2 = notFilter.Filter;
if (filter2.IsAtomic)
{
return(filter);
}
if (filter2 is NotFilter)
{
return(QueryFilter.SimplifyFilter(((NotFilter)filter2).Filter));
}
if (filter2 is CompositeFilter)
{
CompositeFilter compositeFilter = (CompositeFilter)filter2;
QueryFilter[] array = new QueryFilter[compositeFilter.Filters.Count];
for (int i = 0; i < array.Length; i++)
{
array[i] = QueryFilter.NotFilter(compositeFilter.Filters[i]);
}
if (filter2 is AndFilter)
{
return(QueryFilter.SimplifyFilter(QueryFilter.OrTogether(array)));
}
if (filter2 is OrFilter)
{
return(QueryFilter.SimplifyFilter(QueryFilter.AndTogether(array)));
}
}
if (filter2 is ComparisonFilter)
{
ComparisonFilter comparisonFilter = (ComparisonFilter)filter2;
ComparisonOperator comparisonOperator;
switch (comparisonFilter.ComparisonOperator)
{
case ComparisonOperator.Equal:
comparisonOperator = ComparisonOperator.NotEqual;
break;
case ComparisonOperator.NotEqual:
comparisonOperator = ComparisonOperator.Equal;
break;
case ComparisonOperator.LessThan:
comparisonOperator = ComparisonOperator.GreaterThanOrEqual;
break;
case ComparisonOperator.LessThanOrEqual:
comparisonOperator = ComparisonOperator.GreaterThan;
break;
case ComparisonOperator.GreaterThan:
comparisonOperator = ComparisonOperator.LessThanOrEqual;
break;
case ComparisonOperator.GreaterThanOrEqual:
comparisonOperator = ComparisonOperator.LessThan;
break;
default:
return(filter);
}
return(new ComparisonFilter(comparisonOperator, comparisonFilter.Property, comparisonFilter.PropertyValue));
}
return(QueryFilter.NotFilter(QueryFilter.SimplifyFilter(filter2)));
}
else
{
AndFilter andFilter = filter as AndFilter;
if (andFilter != null)
{
return(QueryFilter.SimplifyCompositeFilter <AndFilter, OrFilter>(andFilter));
}
OrFilter orFilter = filter as OrFilter;
if (orFilter != null)
{
return(QueryFilter.SimplifyCompositeFilter <OrFilter, AndFilter>(orFilter));
}
return(filter);
}
}
public override bool Equals(object obj)
{
ComparisonFilter comparisonFilter = obj as ComparisonFilter;
return(comparisonFilter != null && this.comparisonOperator == comparisonFilter.comparisonOperator && comparisonFilter.GetType() == base.GetType() && ComparisonFilter.PropertyValueEquals(this.propertyValue, comparisonFilter.propertyValue) && base.Equals(obj));
}
private static void GenerateInfixString(QueryFilter filter, StringBuilder sb, FilterSchema filterSchema)
{
if (filter is CompositeFilter)
{
sb.Append("(");
CompositeFilter compositeFilter = (CompositeFilter)filter;
int filterCount = compositeFilter.FilterCount;
for (int i = 0; i < filterCount - 1; i++)
{
sb.Append("(");
QueryFilter.GenerateInfixString(compositeFilter.Filters[i], sb, filterSchema);
sb.Append(") ");
if (filter is AndFilter)
{
sb.Append(filterSchema.And);
}
else if (filter is OrFilter)
{
sb.Append(filterSchema.Or);
}
sb.Append(" ");
}
sb.Append("(");
QueryFilter.GenerateInfixString(compositeFilter.Filters[filterCount - 1], sb, filterSchema);
sb.Append("))");
return;
}
if (filter is NotFilter)
{
NotFilter notFilter = filter as NotFilter;
sb.Append(filterSchema.Not);
sb.Append("(");
QueryFilter.GenerateInfixString(notFilter.Filter, sb, filterSchema);
sb.Append(")");
return;
}
if (filter is TextFilter)
{
TextFilter textFilter = filter as TextFilter;
string propertyName = filterSchema.GetPropertyName(textFilter.Property.Name);
if (!string.IsNullOrEmpty(propertyName))
{
sb.Append(propertyName);
sb.Append(filterSchema.Like);
}
if (textFilter.MatchOptions == MatchOptions.FullString || textFilter.MatchOptions == MatchOptions.ExactPhrase || filterSchema.SupportQuotedPrefix)
{
sb.Append(filterSchema.QuotationMark);
}
if (textFilter.MatchOptions == MatchOptions.Suffix || textFilter.MatchOptions == MatchOptions.SubString)
{
sb.Append("*");
}
sb.Append(filterSchema.EscapeStringValue(textFilter.Text));
if (textFilter.MatchOptions == MatchOptions.Prefix || textFilter.MatchOptions == MatchOptions.SubString || textFilter.MatchOptions == MatchOptions.PrefixOnWords)
{
sb.Append("*");
}
if (textFilter.MatchOptions == MatchOptions.FullString || textFilter.MatchOptions == MatchOptions.ExactPhrase || filterSchema.SupportQuotedPrefix)
{
sb.Append(filterSchema.QuotationMark);
return;
}
}
else
{
if (filter is ComparisonFilter)
{
ComparisonFilter comparisonFilter = filter as ComparisonFilter;
sb.Append(filterSchema.GetPropertyName(comparisonFilter.Property.Name));
sb.Append(filterSchema.GetRelationalOperator(comparisonFilter.ComparisonOperator));
sb.Append(filterSchema.QuotationMark);
sb.Append(filterSchema.EscapeStringValue(comparisonFilter.PropertyValue));
sb.Append(filterSchema.QuotationMark);
return;
}
if (filter is ExistsFilter)
{
sb.Append(filterSchema.GetExistsFilter(filter as ExistsFilter));
return;
}
if (filter is FalseFilter)
{
sb.Append(filterSchema.GetFalseFilter());
}
}
}
private static bool FilterMatchesValue(SinglePropertyFilter filter, object value)
{
if (filter is ExistsFilter)
{
return(null != value);
}
if (filter is GenericBitMaskFilter)
{
ulong num;
try
{
num = Convert.ToUInt64(value);
}
catch (InvalidCastException)
{
return(false);
}
GenericBitMaskFilter genericBitMaskFilter = filter as GenericBitMaskFilter;
if (genericBitMaskFilter is BitMaskOrFilter)
{
return(0UL != (genericBitMaskFilter.Mask & num));
}
if (genericBitMaskFilter is BitMaskAndFilter)
{
return(genericBitMaskFilter.Mask == (genericBitMaskFilter.Mask & num));
}
}
if (filter is TextFilter)
{
TextFilter textFilter = filter as TextFilter;
string text = textFilter.Text ?? string.Empty;
string text2 = (value == null) ? string.Empty : value.ToString();
if (string.IsNullOrEmpty(text2))
{
return(string.IsNullOrEmpty(text));
}
StringComparison stringComparison = OpathFilterEvaluator.GetStringComparison(textFilter.MatchFlags);
switch (textFilter.MatchOptions)
{
case MatchOptions.FullString:
return(text2.Equals(text, stringComparison));
case MatchOptions.SubString:
case MatchOptions.ExactPhrase:
return(-1 != text2.IndexOf(text, stringComparison));
case MatchOptions.Prefix:
return(text2.StartsWith(text, stringComparison));
case MatchOptions.Suffix:
return(text2.EndsWith(text, stringComparison));
case MatchOptions.WildcardString:
return(OpathFilterEvaluator.MatchesWildcardString(text, text2, stringComparison));
}
throw new NotSupportedException("Not a currently supported Match Option: " + textFilter.MatchOptions);
}
else
{
if (!(filter is ComparisonFilter))
{
throw new NotSupportedException("The specified filter type \"" + filter.GetType().Name + "\" is currently not supported.");
}
ComparisonFilter comparisonFilter = filter as ComparisonFilter;
object obj = ValueConvertor.ConvertValue(comparisonFilter.PropertyValue, comparisonFilter.Property.Type, null);
switch (comparisonFilter.ComparisonOperator)
{
case ComparisonOperator.Equal:
return(OpathFilterEvaluator.Equals(obj, value, StringComparison.OrdinalIgnoreCase));
case ComparisonOperator.NotEqual:
return(!OpathFilterEvaluator.Equals(obj, value, StringComparison.OrdinalIgnoreCase));
case ComparisonOperator.LessThan:
return(0 < Comparer.Default.Compare(obj, value));
case ComparisonOperator.LessThanOrEqual:
return(0 <= Comparer.Default.Compare(obj, value));
case ComparisonOperator.GreaterThan:
return(0 > Comparer.Default.Compare(obj, value));
case ComparisonOperator.GreaterThanOrEqual:
return(0 >= Comparer.Default.Compare(obj, value));
default:
throw new NotSupportedException("Not a currently supported comparison operator: " + comparisonFilter.ComparisonOperator);
}
}
}