feat: support type alias (#133)

a631807682 · web-flow · commit 614546168df6 · 2022-10-07T17:46:08.000+08:00
diff --git a/migrator.go b/migrator.go
@@ -34,6 +34,17 @@ where
     and t.relname = ?
 `
 
+var typeAliasMap = map[string][]string{
+	"int2":     {"smallint"},
+	"int4":     {"integer"},
+	"int8":     {"bigint"},
+	"smallint": {"int2"},
+	"integer":  {"int4"},
+	"bigint":   {"int8"},
+	"decimal":  {"numeric"},
+	"numeric":  {"decimal"},
+}
+
 type Migrator struct {
 	migrator.Migrator
 }
@@ -676,3 +687,7 @@ func groupByIndexName(indexList []*Index) map[string][]*Index {
 	}
 	return columnIndexMap
 }
+
+func (m Migrator) GetTypeAliases(databaseTypeName string) []string {
+	return typeAliasMap[databaseTypeName]
+}

Original file line number	Diff line number	Diff line change
`@@ -34,6 +34,17 @@ where`
`34`	`34`	`and t.relname = ?`
`35`	`35`	`
`36`	`36`
	`37`	`+var typeAliasMap = map[string][]string{`
	`38`	`+ "int2": {"smallint"},`
	`39`	`+ "int4": {"integer"},`
	`40`	`+ "int8": {"bigint"},`
	`41`	`+ "smallint": {"int2"},`
	`42`	`+ "integer": {"int4"},`
	`43`	`+ "bigint": {"int8"},`
	`44`	`+ "decimal": {"numeric"},`
	`45`	`+ "numeric": {"decimal"},`
	`46`	`+}`
	`47`	`+`
`37`	`48`	`type Migrator struct {`
`38`	`49`	`migrator.Migrator`
`39`	`50`	`}`
`@@ -676,3 +687,7 @@ func groupByIndexName(indexList []Index) map[string][]Index {`
`676`	`687`	`}`
`677`	`688`	`return columnIndexMap`
`678`	`689`	`}`
	`690`	`+`
	`691`	`+func (m Migrator) GetTypeAliases(databaseTypeName string) []string {`
	`692`	`+ return typeAliasMap[databaseTypeName]`
	`693`	`+}`