snapshot of https://github.com/cortezaproject/corteza.git (2024.9.x, 2026-09-18; blobs > 131072B omitted)

server/pkg/dal/buffer.go

@@ -0,0 +1,36 @@
+package dal
+
+import (
+	"context"
+
+	"github.com/cortezaproject/corteza/server/pkg/filter"
+)
+
+type (
+	// OrderedBuffer provides the buffered data in the specified order
+	OrderedBuffer interface {
+		Buffer
+
+		// InOrder makes the buffer provide the stored data in the specified order
+		InOrder(ss ...*filter.SortExpr) (err error)
+	}
+
+	// Buffer provides a place where you can buffer the data provided by DAL
+	// @note Buffers are currently primarily used for testing
+	Buffer interface {
+		// Seek moves the index pointer to the specified location
+		// After the Seek call, a Next() call is required
+		Seek(context.Context, int) error
+
+		// Len returns the number of elements in the buffer
+		Len() int
+
+		Iterator
+		Adder
+	}
+
+	Adder interface {
+		// Add adds a new ValueGetter to the buffer
+		Add(context.Context, ValueGetter) (err error)
+	}
+)