Планировщик запросов. Планы #45

unhandled-exception · Oct 12, 2022 · fa3134c · fa3134c
1 parent 6a460e2
commit fa3134c
Show file tree

Hide file tree

Showing 22 changed files with 4,255 additions and 24 deletions.
diff --git a/.golangci.yml b/.golangci.yml
@@ -69,3 +69,4 @@ linters-settings:
       - Constant
       - Term
       - Statement$
+      - Scan
diff --git a/pkg/planner/errors.go b/pkg/planner/errors.go
@@ -0,0 +1,5 @@
+package planner
+
+import "github.com/pkg/errors"
+
+var ErrFailedToCreatePlan = errors.New("failed to create plan")
diff --git a/pkg/planner/plan.go b/pkg/planner/plan.go
@@ -0,0 +1,15 @@
+package planner
+
+import (
+	"github.com/unhandled-exception/sophiadb/pkg/records"
+	"github.com/unhandled-exception/sophiadb/pkg/scan"
+)
+
+type Plan interface {
+	Open() (scan.Scan, error)
+	Schema() records.Schema
+	BlocksAccessed() int64
+	Records() int64
+	DistinctValues(string) (int64, bool)
+	String() string
+}