internal void Reset()
{
_WeakReference = null;
_State = KMaps.MetaState.Empty; // By default...
_Map = null;
_Record = null; // Do not dispose, might be in use elsewhere...
}
internal static void ClearMap( IKMap map )
{
if( map == null ) throw new ArgumentNullException( "map", "Map cannot be null." );
lock( _SyncRoot ) {
int count = _MetaEntities.Count; for( int i = 0; i < count; i++ ) {
var meta = _MetaEntities[i];
if( meta._Map == map ) { _MetaEntities.RemoveAt( i ); count--; i--; }
}
}
}
internal static KMetaEntity First( IKMap map, params Func<dynamic, object>[] specs )
{
if( map == null ) throw new ArgumentNullException( "map", "Map cannot be null." );
if( specs == null ) throw new ArgumentNullException( "specs", "Specifications cannot be null." );
if( specs.Length == 0 ) throw new ArgumentException( "Specifications list is empty." );
KRecordBuilder builder = new KRecordBuilder( map.Link.DbCaseSensitiveNames );
foreach( var spec in specs ) builder.Add( spec );
KRecord find = builder.Generate( autoDispose: true );
var r = First( map, find ); find.Schema.Dispose(); find.Dispose();
return r;
}
internal void InsertOn( IKMap map )
{
if( map == null ) throw new ArgumentNullException( "map", "Map cannot be null." );
if( this._Map != null ) throw new InvalidOperationException( "This MetaEntity already belongs to other map: " + this );
lock( _SyncRoot ) { this._Map = map; _MetaEntities.Add( this ); }
}
// --------------------------------------------------
internal static KMetaEntity First( IKMap map, KRecord find )
{
if( map == null ) throw new ArgumentNullException( "map", "Map cannot be null." );
if( find == null ) throw new ArgumentNullException( "find", "KRecord cannot be null." );
if( find.Count == 0 ) throw new ArgumentException( "Find record contains no columns." );
lock( _SyncRoot ) {
foreach( var meta in _MetaEntities ) {
if( meta.Host == null ) continue;
if( meta.Record == null ) continue;
if( meta.Map != map ) continue;
if( !find.EquivalentTo( meta.Record, strict: false ) ) continue;
return meta;
}
}
return null;
}
