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format.go
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format.go
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// Copyright 2021 Matrix Origin
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package engine
import (
"bytes"
"fmt"
)
func (def *AttributeDef) Format(buf *bytes.Buffer) {
def.Attr.Format(buf)
}
func (def *Attribute) Format(buf *bytes.Buffer) {
buf.WriteString("`")
buf.WriteString(def.Name)
buf.WriteString("`")
buf.WriteByte(' ')
buf.WriteString(def.Type.String())
if def.Type.Width > 0 && def.Type.Scale > 0 {
buf.WriteString("(")
str := fmt.Sprintf("%d", def.Type.Width)
buf.WriteString(str)
buf.WriteString(", ")
buf.WriteByte(')')
} else if def.Type.Width > 0 {
buf.WriteString("(")
str := fmt.Sprintf("%d", def.Type.Width)
buf.WriteString(str)
buf.WriteByte(')')
}
if def.Default.NullAbility {
buf.WriteString(" NULL ")
}
val := def.Default.Expr.String()
if val != "" {
buf.WriteString(" DEFAULT ")
buf.WriteString(val)
}
}
func (def *IndexTableDef) Format(buf *bytes.Buffer) {
buf.WriteString("KEY")
buf.WriteString(" `")
buf.WriteString(def.Name)
buf.WriteString("`")
prefix := " ("
for _, c := range def.ColNames {
buf.WriteString(prefix)
buf.WriteString("`")
buf.WriteString(c)
buf.WriteString("`")
prefix = ", "
}
buf.WriteString(")")
buf.WriteString(" USING ")
buf.WriteString(def.Typ.ToString())
}