/// <summary>
///
/// </summary>
/// <param name="collection"></param>
/// <param name="filter"></param>
/// <param name="parameters"></param>
/// <returns></returns>
public IEnumerable EnumerableFilter( object collection, string filter, QueryParameters parameters )
{
string[ ] concreteFilters = QueryTranslator.ConcreteQueries( filter, factory );
FilterTranslator[ ] filters = new FilterTranslator[concreteFilters.Length];
for( int i = 0; i < concreteFilters.Length; i++ )
{
filters[ i ] = GetFilterTranslator(
collection,
concreteFilters[ i ],
parameters,
true );
}
if( filters.Length == 0 )
{
return new ArrayList( 0 );
}
IEnumerable result = null;
IEnumerable[ ] results = null;
bool many = filters.Length > 1;
if( many )
{
results = new IEnumerable[filters.Length];
}
// execute the queries and return all results as a single enumerable
for( int i = 0; i < filters.Length; i++ )
{
try
{
result = filters[ i ].GetEnumerable( parameters, this );
}
catch( Exception e )
{
throw new ADOException( "could not execute query", e );
}
if( many )
{
results[ i ] = result;
}
}
return many ? new JoinedEnumerable( results ) : result;
}
private FilterTranslator CreateFilterTranslator( string filterString, FilterCacheKey cacheKey )
{
FilterTranslator filter = new FilterTranslator( filterString );
Put( cacheKey, filter );
return filter;
}
/// <summary>
///
/// </summary>
/// <param name="collection"></param>
/// <param name="filter"></param>
/// <param name="parameters"></param>
/// <returns></returns>
public IList Filter( object collection, string filter, QueryParameters parameters )
{
string[ ] concreteFilters = QueryTranslator.ConcreteQueries( filter, factory );
FilterTranslator[ ] filters = new FilterTranslator[concreteFilters.Length];
for( int i = 0; i < concreteFilters.Length; i++ )
{
filters[ i ] = GetFilterTranslator(
collection,
concreteFilters[ i ],
parameters,
false );
}
dontFlushFromFind++; // stops flush being called multiple times if this method is recursively called
IList results = new ArrayList();
try
{
for( int i = 0; i < concreteFilters.Length; i++ )
{
IList currentResults;
try
{
currentResults = filters[ i ].List( this, parameters );
}
catch( Exception e )
{
throw new ADOException( "could not execute query", e );
}
foreach( object res in results )
{
currentResults.Add( res );
}
results = currentResults;
}
}
finally
{
dontFlushFromFind--;
}
return results;
}
