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stmt.go
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stmt.go
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// Copyright 2020 Matt Ho
//
// 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 dapi
import (
"context"
"database/sql/driver"
"github.com/aws/aws-sdk-go/aws"
"github.com/aws/aws-sdk-go/service/rdsdataservice"
"time"
)
type Stmt struct {
ctx context.Context
config *config
query string
}
func (s *Stmt) Close() error {
return nil
}
// NumInput returns the number of placeholder parameters.
//
// If NumInput returns >= 0, the sql package will sanity check
// argument counts from callers and return errors to the caller
// before the statement's Exec or Query methods are called.
//
// NumInput may also return -1, if the driver doesn't know
// its number of placeholders. In that case, the sql package
// will not sanity check Exec or Query argument counts.
func (s *Stmt) NumInput() int {
return -1
}
func (s *Stmt) Exec(args []driver.Value) (driver.Result, error) {
panic("implement me: Exec")
}
func (s *Stmt) ExecContext(ctx context.Context, args []driver.NamedValue) (driver.Result, error) {
return executeStatement(ctx, s.config, s.query, "", args...)
}
func (s *Stmt) Query(args []driver.Value) (driver.Rows, error) {
panic("implement me: Query")
}
func (s *Stmt) QueryContext(ctx context.Context, args []driver.NamedValue) (driver.Rows, error) {
panic("implement me: QueryContext (Stmt)")
}
func newStmt(ctx context.Context, config *config, query string) *Stmt {
return &Stmt{
ctx: ctx,
config: config,
query: query,
}
}
func asField(value driver.Value) *rdsdataservice.Field {
switch v := value.(type) {
case int64:
return &rdsdataservice.Field{LongValue: aws.Int64(v)}
case float64:
return &rdsdataservice.Field{DoubleValue: aws.Float64(v)}
case bool:
return &rdsdataservice.Field{BooleanValue: aws.Bool(v)}
case []byte:
return &rdsdataservice.Field{BlobValue: v}
case string:
return &rdsdataservice.Field{StringValue: aws.String(v)}
case time.Time:
s := v.Format("2006-01-02 15:04:05")
return &rdsdataservice.Field{StringValue: aws.String(s)}
default:
return &rdsdataservice.Field{IsNull: aws.Bool(true)}
}
}
func valueOf(field *rdsdataservice.Field) driver.Value {
switch {
case field.ArrayValue != nil:
switch {
case field.ArrayValue.BooleanValues != nil:
return aws.BoolValueSlice(field.ArrayValue.BooleanValues)
case field.ArrayValue.DoubleValues != nil:
return aws.Float64ValueSlice(field.ArrayValue.DoubleValues)
case field.ArrayValue.LongValues != nil:
return aws.Int64ValueSlice(field.ArrayValue.LongValues)
case field.ArrayValue.StringValues != nil:
return aws.StringValueSlice(field.ArrayValue.StringValues)
default:
return nil
}
case field.BlobValue != nil:
return field.BlobValue
case field.BooleanValue != nil:
return *field.BooleanValue
case field.DoubleValue != nil:
return *field.DoubleValue
case field.LongValue != nil:
return *field.LongValue
case field.StringValue != nil:
return *field.StringValue
default:
return nil
}
}