public IQueryPlanNode PlanQuery(QueryInfo queryInfo)
{
if (queryInfo == null)
throw new ArgumentNullException("queryInfo");
var context = queryInfo.Request;
var queryExpression = queryInfo.Expression;
var sortColumns = queryInfo.SortColumns;
var limit = queryInfo.Limit;
var queryFrom = QueryExpressionFrom.Create(context, queryExpression);
var orderBy = new List<SortColumn>();
if (sortColumns != null)
orderBy.AddRange(sortColumns);
return PlanQuery(context, queryExpression, queryFrom, orderBy, limit);
}
IStatement IPreparableStatement.Prepare(IRequest request)
{
var tableName = request.Query.ResolveTableName(TableName);
if (!request.Query.TableExists(tableName))
throw new ObjectNotFoundException(tableName);
var queryExp = new SqlQueryExpression(new SelectColumn[] {SelectColumn.Glob("*") });
queryExp.FromClause.AddTable(tableName.FullName);
queryExp.WhereExpression = WhereExpression;
var queryInfo = new QueryInfo(request, queryExp);
if (Limit > 0)
queryInfo.Limit = new QueryLimit(Limit);
var queryPlan = request.Query.Context.QueryPlanner().PlanQuery(queryInfo);
return new Prepared(tableName, queryPlan);
}
protected override SqlStatement PrepareStatement(IRequest context)
{
var tableName = context.Access().ResolveTableName(TableName);
if (!context.Access().TableExists(tableName))
throw new ObjectNotFoundException(tableName);
var queryExp = new SqlQueryExpression(new SelectColumn[] {SelectColumn.Glob("*") });
queryExp.FromClause.AddTable(tableName.FullName);
queryExp.WhereExpression = WhereExpression;
var queryInfo = new QueryInfo(context, queryExp);
if (Limit > 0)
queryInfo.Limit = new QueryLimit(Limit);
var queryPlan = context.Query.Context.QueryPlanner().PlanQuery(queryInfo);
return new Prepared(tableName, queryPlan);
}
