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orm add postgres support

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This commit is contained in:
slene
2013-08-11 22:27:45 +08:00
parent 449fbe82f6
commit 45345fa782
9 changed files with 316 additions and 122 deletions
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26
orm/db_tables.go
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@@ -177,7 +177,7 @@ func (t *dbTables) getJoinSql() (join string) {
return
}
func (d *dbTables) parseExprs(mi *modelInfo, exprs []string) (index, column, name string, info *fieldInfo, success bool) {
func (d *dbTables) parseExprs(mi *modelInfo, exprs []string) (index, name string, info *fieldInfo, success bool) {
var (
ffi *fieldInfo
jtl *dbTable
@@ -236,7 +236,6 @@ func (d *dbTables) parseExprs(mi *modelInfo, exprs []string) (index, column, nam
} else {
index = jtl.index
}
column = fi.column
info = fi
if jtl != nil {
name = jtl.name + ExprSep + fi.name
@@ -256,14 +255,14 @@ func (d *dbTables) parseExprs(mi *modelInfo, exprs []string) (index, column, nam
if exist == false {
index = ""
column = ""
name = ""
info = nil
success = false
return
}
}
success = index != "" && column != ""
success = index != "" && info != nil
return
}
@@ -305,7 +304,7 @@ func (d *dbTables) getCondSql(cond *Condition, sub bool) (where string, params [
exprs = exprs[:num]
}
index, column, _, _, suc := d.parseExprs(mi, exprs)
index, _, fi, suc := d.parseExprs(mi, exprs)
if suc == false {
panic(fmt.Errorf("unknown field/column name `%s`", strings.Join(p.exprs, ExprSep)))
}
@@ -314,9 +313,12 @@ func (d *dbTables) getCondSql(cond *Condition, sub bool) (where string, params [
operator = "exact"
}
operSql, args := d.base.GenerateOperatorSql(mi, operator, p.args)
operSql, args := d.base.GenerateOperatorSql(mi, fi, operator, p.args)
where += fmt.Sprintf("%s.%s%s%s %s ", index, Q, column, Q, operSql)
leftCol := fmt.Sprintf("%s.%s%s%s", index, Q, fi.column, Q)
d.base.GenerateOperatorLeftCol(operator, &leftCol)
where += fmt.Sprintf("%s %s ", leftCol, operSql)
params = append(params, args...)
}
@@ -345,12 +347,12 @@ func (d *dbTables) getOrderSql(orders []string) (orderSql string) {
}
exprs := strings.Split(order, ExprSep)
index, column, _, _, suc := d.parseExprs(d.mi, exprs)
index, _, fi, suc := d.parseExprs(d.mi, exprs)
if suc == false {
panic(fmt.Errorf("unknown field/column name `%s`", strings.Join(exprs, ExprSep)))
}
orderSqls = append(orderSqls, fmt.Sprintf("%s.%s%s%s %s", index, Q, column, Q, asc))
orderSqls = append(orderSqls, fmt.Sprintf("%s.%s%s%s %s", index, Q, fi.column, Q, asc))
}
orderSql = fmt.Sprintf("ORDER BY %s ", strings.Join(orderSqls, ", "))
@@ -365,7 +367,11 @@ func (d *dbTables) getLimitSql(mi *modelInfo, offset int64, limit int) (limits s
// no limit
if offset > 0 {
maxLimit := d.base.MaxLimit()
limits = fmt.Sprintf("LIMIT %d OFFSET %d", maxLimit, offset)
if maxLimit == 0 {
limits = fmt.Sprintf("OFFSET %d", offset)
} else {
limits = fmt.Sprintf("LIMIT %d OFFSET %d", maxLimit, offset)
}
}
} else if offset <= 0 {
limits = fmt.Sprintf("LIMIT %d", limit)