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add comments for orm packages, part 2

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This commit is contained in:
傅小黑
2014-01-17 17:25:17 +08:00
parent f5a5ebe16b
commit 4c527dde65
7 changed files with 59 additions and 0 deletions
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15
orm/db_tables.go
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@@ -6,6 +6,7 @@ import (
"time"
)
// table info struct.
type dbTable struct {
id int
index string
@@ -18,6 +19,7 @@ type dbTable struct {
jtl *dbTable
}
// tables collection struct, contains some tables.
type dbTables struct {
tablesM map[string]*dbTable
tables []*dbTable
@@ -26,6 +28,8 @@ type dbTables struct {
skipEnd bool
}
// set table info to collection.
// if not exist, create new.
func (t *dbTables) set(names []string, mi *modelInfo, fi *fieldInfo, inner bool) *dbTable {
name := strings.Join(names, ExprSep)
if j, ok := t.tablesM[name]; ok {
@@ -42,6 +46,7 @@ func (t *dbTables) set(names []string, mi *modelInfo, fi *fieldInfo, inner bool)
return t.tablesM[name]
}
// add table info to collection.
func (t *dbTables) add(names []string, mi *modelInfo, fi *fieldInfo, inner bool) (*dbTable, bool) {
name := strings.Join(names, ExprSep)
if _, ok := t.tablesM[name]; ok == false {
@@ -54,11 +59,14 @@ func (t *dbTables) add(names []string, mi *modelInfo, fi *fieldInfo, inner bool)
return t.tablesM[name], false
}
// get table info in collection.
func (t *dbTables) get(name string) (*dbTable, bool) {
j, ok := t.tablesM[name]
return j, ok
}
// get related fields info in recursive depth loop.
// loop once, depth decreases one.
func (t *dbTables) loopDepth(depth int, prefix string, fi *fieldInfo, related []string) []string {
if depth < 0 || fi.fieldType == RelManyToMany {
return related
@@ -79,6 +87,7 @@ func (t *dbTables) loopDepth(depth int, prefix string, fi *fieldInfo, related []
return related
}
// parse related fields.
func (t *dbTables) parseRelated(rels []string, depth int) {
relsNum := len(rels)
@@ -140,6 +149,7 @@ func (t *dbTables) parseRelated(rels []string, depth int) {
}
}
// generate join string.
func (t *dbTables) getJoinSql() (join string) {
Q := t.base.TableQuote()
@@ -186,6 +196,7 @@ func (t *dbTables) getJoinSql() (join string) {
return
}
// parse orm model struct field tag expression.
func (t *dbTables) parseExprs(mi *modelInfo, exprs []string) (index, name string, info *fieldInfo, success bool) {
var (
jtl *dbTable
@@ -300,6 +311,7 @@ loopFor:
return
}
// generate condition sql.
func (t *dbTables) getCondSql(cond *Condition, sub bool, tz *time.Location) (where string, params []interface{}) {
if cond == nil || cond.IsEmpty() {
return
@@ -364,6 +376,7 @@ func (t *dbTables) getCondSql(cond *Condition, sub bool, tz *time.Location) (whe
return
}
// generate order sql.
func (t *dbTables) getOrderSql(orders []string) (orderSql string) {
if len(orders) == 0 {
return
@@ -392,6 +405,7 @@ func (t *dbTables) getOrderSql(orders []string) (orderSql string) {
return
}
// generate limit sql.
func (t *dbTables) getLimitSql(mi *modelInfo, offset int64, limit int64) (limits string) {
if limit == 0 {
limit = int64(DefaultRowsLimit)
@@ -414,6 +428,7 @@ func (t *dbTables) getLimitSql(mi *modelInfo, offset int64, limit int64) (limits
return
}
// crete new tables collection.
func newDbTables(mi *modelInfo, base dbBaser) *dbTables {
tables := &dbTables{}
tables.tablesM = make(map[string]*dbTable)