public override ISqlExpression[] GetExpressions <T>(ExpressionParser <T> parser)
{
return(new [] { Field });
}
Query <T> GetInfo(IDataContext dataContext)
{
var dataContextInfo = DataContextInfo.Create(dataContext);
string lastContextID;
MappingSchema lastMappingSchema;
Query <T> query;
lock (_sync)
{
lastContextID = _lastContextID;
lastMappingSchema = _lastMappingSchema;
query = _lastQuery;
}
var contextID = dataContextInfo.ContextID;
var mappingSchema = dataContextInfo.MappingSchema;
if (lastContextID != contextID || lastMappingSchema != mappingSchema)
{
query = null;
}
if (query == null)
{
var key = new { contextID, mappingSchema };
lock (_sync)
_infos.TryGetValue(key, out query);
if (query == null)
{
lock (_sync)
{
_infos.TryGetValue(key, out query);
if (query == null)
{
#if NEW_PARSER
query = new ExpressionParser(new Query <T>(), dataContextInfo, _expression, _lambda.Parameters.ToArray())
.Parse <T>();
#else
query = new ExpressionParserOld <T>().Parse(
contextID,
mappingSchema,
dataContextInfo.CreateSqlProvider,
_expression,
_lambda.Parameters.ToArray());
#endif
_infos.Add(key, query);
_lastContextID = contextID;
_lastMappingSchema = mappingSchema;
_lastQuery = query;
}
}
}
}
return(query);
}
public abstract ISqlExpression[] GetExpressions <T>(ExpressionParser <T> parser);
public abstract FieldIndex[] Select <T>(ExpressionParser <T> parser);
public override ISqlExpression[] GetExpressions <T>(ExpressionParser <T> parser)
{
return(GroupBySource.BaseQuery.GetExpressions(parser));
}
public override ISqlExpression[] GetExpressions <T>(ExpressionParser <T> parser)
{
var expr = base.GetExpressions(parser);
return(expr.Length == 1 ? expr : new ISqlExpression[] { SubSql });
}
public override ISqlExpression[] GetExpressions <T>(ExpressionParser <T> parser)
{
return(new ISqlExpression[] { SqlTable });
}
