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Diffstat (limited to 'dependencies/pkg/mod/github.com/mattn/go-sqlite3@v1.14.16/_example/vtable_eponymous_only/vtable.go')
-rw-r--r--dependencies/pkg/mod/github.com/mattn/go-sqlite3@v1.14.16/_example/vtable_eponymous_only/vtable.go118
1 files changed, 118 insertions, 0 deletions
diff --git a/dependencies/pkg/mod/github.com/mattn/go-sqlite3@v1.14.16/_example/vtable_eponymous_only/vtable.go b/dependencies/pkg/mod/github.com/mattn/go-sqlite3@v1.14.16/_example/vtable_eponymous_only/vtable.go
new file mode 100644
index 0000000..49fc0b7
--- /dev/null
+++ b/dependencies/pkg/mod/github.com/mattn/go-sqlite3@v1.14.16/_example/vtable_eponymous_only/vtable.go
@@ -0,0 +1,118 @@
+package main
+
+import (
+ "fmt"
+
+ "github.com/mattn/go-sqlite3"
+)
+
+type seriesModule struct{}
+
+func (m *seriesModule) EponymousOnlyModule() {}
+
+func (m *seriesModule) Create(c *sqlite3.SQLiteConn, args []string) (sqlite3.VTab, error) {
+ err := c.DeclareVTab(fmt.Sprintf(`
+ CREATE TABLE %s (
+ value INT,
+ start HIDDEN,
+ stop HIDDEN,
+ step HIDDEN
+ )`, args[0]))
+ if err != nil {
+ return nil, err
+ }
+ return &seriesTable{0, 0, 1}, nil
+}
+
+func (m *seriesModule) Connect(c *sqlite3.SQLiteConn, args []string) (sqlite3.VTab, error) {
+ return m.Create(c, args)
+}
+
+func (m *seriesModule) DestroyModule() {}
+
+type seriesTable struct {
+ start int64
+ stop int64
+ step int64
+}
+
+func (v *seriesTable) Open() (sqlite3.VTabCursor, error) {
+ return &seriesCursor{v, 0}, nil
+}
+
+func (v *seriesTable) BestIndex(csts []sqlite3.InfoConstraint, ob []sqlite3.InfoOrderBy) (*sqlite3.IndexResult, error) {
+ used := make([]bool, len(csts))
+ for c, cst := range csts {
+ if cst.Usable && cst.Op == sqlite3.OpEQ {
+ used[c] = true
+ }
+ }
+
+ return &sqlite3.IndexResult{
+ IdxNum: 0,
+ IdxStr: "default",
+ Used: used,
+ }, nil
+}
+
+func (v *seriesTable) Disconnect() error { return nil }
+func (v *seriesTable) Destroy() error { return nil }
+
+type seriesCursor struct {
+ *seriesTable
+ value int64
+}
+
+func (vc *seriesCursor) Column(c *sqlite3.SQLiteContext, col int) error {
+ switch col {
+ case 0:
+ c.ResultInt64(vc.value)
+ case 1:
+ c.ResultInt64(vc.seriesTable.start)
+ case 2:
+ c.ResultInt64(vc.seriesTable.stop)
+ case 3:
+ c.ResultInt64(vc.seriesTable.step)
+ }
+ return nil
+}
+
+func (vc *seriesCursor) Filter(idxNum int, idxStr string, vals []interface{}) error {
+ switch {
+ case len(vals) < 1:
+ vc.seriesTable.start = 0
+ vc.seriesTable.stop = 1000
+ vc.value = vc.seriesTable.start
+ case len(vals) < 2:
+ vc.seriesTable.start = vals[0].(int64)
+ vc.seriesTable.stop = 1000
+ vc.value = vc.seriesTable.start
+ case len(vals) < 3:
+ vc.seriesTable.start = vals[0].(int64)
+ vc.seriesTable.stop = vals[1].(int64)
+ vc.value = vc.seriesTable.start
+ case len(vals) < 4:
+ vc.seriesTable.start = vals[0].(int64)
+ vc.seriesTable.stop = vals[1].(int64)
+ vc.seriesTable.step = vals[2].(int64)
+ }
+
+ return nil
+}
+
+func (vc *seriesCursor) Next() error {
+ vc.value += vc.step
+ return nil
+}
+
+func (vc *seriesCursor) EOF() bool {
+ return vc.value > vc.stop
+}
+
+func (vc *seriesCursor) Rowid() (int64, error) {
+ return int64(vc.value), nil
+}
+
+func (vc *seriesCursor) Close() error {
+ return nil
+}