/// <summary>
/// Parses the search filter string.
/// </summary>
/// <param name="searchFilter">The search filter string.</param>
public static GenericSearchCondition Parse( string searchFilter )
{
if( !string.IsNullOrEmpty( searchFilter ) )
{
var conditions = new List<GenericSearchCondition>();
var searchIndex = 0;
var markerIndex = -1;
while( searchIndex < searchFilter.Length )
{
var attrCondition = new GenericSearchAttributeCondition();
searchFilter = searchFilter.Substring( searchIndex ).Trim();
// --- AND ---
if( markerIndex != -1 )
{
if( searchFilter.StartsWith( "+" ) )
searchFilter = searchFilter.Substring( 1 ).Trim();
else
throw new InvalidOperationException( string.Format( ResourceManager.GetString( "ParsingError.AND" ), searchFilter ) );
}
// --- Attribute key ---
var opStr = FindFirst( searchFilter, AllOperationStrings );
if( opStr == null )
throw new InvalidOperationException( string.Format( ResourceManager.GetString( "ParsingError.Incomplete" ), searchFilter ) );
searchIndex = searchFilter.IndexOf( opStr, StringComparison.Ordinal );
markerIndex = searchIndex + opStr.Length;
var token = searchFilter.Substring( 0, searchIndex );
ushort key;
if( !ushort.TryParse( token, out key ) )
throw new InvalidOperationException( string.Format( ResourceManager.GetString( "ParsingError.NoKey" ), token ) );
attrCondition.Attribute = key;
// --- Operation ---
Operation op;
if( !Operations.TryGetValue( opStr, out op ) )
throw new InvalidOperationException( string.Format( ResourceManager.GetString( "ParsingError.InvalidOperator" ), token ) );
attrCondition.Operation = op;
// --- Parameters ---
searchIndex = searchFilter.IndexOf( '[', markerIndex );
if( searchIndex == -1 )
throw new InvalidOperationException( string.Format( ResourceManager.GetString( "ParsingError.NoValues" ), searchFilter ) );
if( searchFilter.Substring( markerIndex, searchIndex - markerIndex ).Trim() != String.Empty )
throw new InvalidOperationException( string.Format( ResourceManager.GetString( "ParsingError.Quotation" ), attrCondition.Operation ) );
markerIndex = searchIndex + 1;
searchIndex = searchFilter.IndexOf( ']', markerIndex );
if( searchIndex == -1 )
{
throw new InvalidOperationException( string.Format( ResourceManager.GetString( "ParsingError.NoClosingQuotes" ),
searchFilter.Substring( markerIndex ) ) );
}
token = searchFilter.Substring( markerIndex, searchIndex - markerIndex );
attrCondition.Value = token;
conditions.Add( attrCondition );
++searchIndex;
}
return conditions.Count == 1 ? conditions[ 0 ] : new GenericSearchAnd { Conditions = conditions.ToArray() };
}
return null;
}
/// <summary>
/// Parses the search filter string.
/// </summary>
/// <param name="searchFilter">The search filter string.</param>
public static GenericSearchCondition Parse(string searchFilter)
{
if (!string.IsNullOrEmpty(searchFilter))
{
var conditions = new List <GenericSearchCondition>();
var searchIndex = 0;
var markerIndex = -1;
while (searchIndex < searchFilter.Length)
{
var attrCondition = new GenericSearchAttributeCondition();
searchFilter = searchFilter.Substring(searchIndex).Trim();
// --- AND ---
if (markerIndex != -1)
{
if (searchFilter.StartsWith("+"))
{
searchFilter = searchFilter.Substring(1).Trim();
}
else
{
throw new InvalidOperationException(string.Format(ResourceManager.GetString("ParsingError.AND"), searchFilter));
}
}
// --- Attribute key ---
var opStr = FindFirst(searchFilter, AllOperationStrings);
if (opStr == null)
{
throw new InvalidOperationException(string.Format(ResourceManager.GetString("ParsingError.Incomplete"), searchFilter));
}
searchIndex = searchFilter.IndexOf(opStr, StringComparison.Ordinal);
markerIndex = searchIndex + opStr.Length;
var token = searchFilter.Substring(0, searchIndex);
ushort key;
if (!ushort.TryParse(token, out key))
{
throw new InvalidOperationException(string.Format(ResourceManager.GetString("ParsingError.NoKey"), token));
}
attrCondition.Attribute = key;
// --- Operation ---
Operation op;
if (!Operations.TryGetValue(opStr, out op))
{
throw new InvalidOperationException(string.Format(ResourceManager.GetString("ParsingError.InvalidOperator"), token));
}
attrCondition.Operation = op;
// --- Parameters ---
searchIndex = searchFilter.IndexOf('[', markerIndex);
if (searchIndex == -1)
{
throw new InvalidOperationException(string.Format(ResourceManager.GetString("ParsingError.NoValues"), searchFilter));
}
if (searchFilter.Substring(markerIndex, searchIndex - markerIndex).Trim() != String.Empty)
{
throw new InvalidOperationException(string.Format(ResourceManager.GetString("ParsingError.Quotation"), attrCondition.Operation));
}
markerIndex = searchIndex + 1;
searchIndex = searchFilter.IndexOf(']', markerIndex);
if (searchIndex == -1)
{
throw new InvalidOperationException(string.Format(ResourceManager.GetString("ParsingError.NoClosingQuotes"),
searchFilter.Substring(markerIndex)));
}
token = searchFilter.Substring(markerIndex, searchIndex - markerIndex);
attrCondition.Value = token;
conditions.Add(attrCondition);
++searchIndex;
}
return(conditions.Count == 1 ? conditions[0] : new GenericSearchAnd {
Conditions = conditions.ToArray()
});
}
return(null);
}