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690 lines
15 KiB
Go
690 lines
15 KiB
Go
package bun
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import (
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"context"
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"database/sql"
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"fmt"
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"reflect"
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"strings"
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"github.com/uptrace/bun/dialect/feature"
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"github.com/uptrace/bun/internal"
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"github.com/uptrace/bun/schema"
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)
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type InsertQuery struct {
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whereBaseQuery
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returningQuery
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customValueQuery
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on schema.QueryWithArgs
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setQuery
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ignore bool
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replace bool
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}
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var _ Query = (*InsertQuery)(nil)
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func NewInsertQuery(db *DB) *InsertQuery {
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q := &InsertQuery{
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whereBaseQuery: whereBaseQuery{
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baseQuery: baseQuery{
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db: db,
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conn: db.DB,
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},
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},
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}
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return q
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}
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func (q *InsertQuery) Conn(db IConn) *InsertQuery {
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q.setConn(db)
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return q
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}
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func (q *InsertQuery) Model(model interface{}) *InsertQuery {
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q.setModel(model)
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return q
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}
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func (q *InsertQuery) Err(err error) *InsertQuery {
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q.setErr(err)
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return q
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}
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// Apply calls the fn passing the SelectQuery as an argument.
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func (q *InsertQuery) Apply(fn func(*InsertQuery) *InsertQuery) *InsertQuery {
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if fn != nil {
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return fn(q)
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}
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return q
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}
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func (q *InsertQuery) With(name string, query schema.QueryAppender) *InsertQuery {
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q.addWith(name, query, false)
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return q
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}
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func (q *InsertQuery) WithRecursive(name string, query schema.QueryAppender) *InsertQuery {
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q.addWith(name, query, true)
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return q
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}
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//------------------------------------------------------------------------------
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func (q *InsertQuery) Table(tables ...string) *InsertQuery {
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for _, table := range tables {
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q.addTable(schema.UnsafeIdent(table))
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}
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return q
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}
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func (q *InsertQuery) TableExpr(query string, args ...interface{}) *InsertQuery {
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q.addTable(schema.SafeQuery(query, args))
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return q
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}
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func (q *InsertQuery) ModelTableExpr(query string, args ...interface{}) *InsertQuery {
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q.modelTableName = schema.SafeQuery(query, args)
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return q
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}
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//------------------------------------------------------------------------------
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func (q *InsertQuery) Column(columns ...string) *InsertQuery {
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for _, column := range columns {
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q.addColumn(schema.UnsafeIdent(column))
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}
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return q
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}
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func (q *InsertQuery) ColumnExpr(query string, args ...interface{}) *InsertQuery {
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q.addColumn(schema.SafeQuery(query, args))
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return q
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}
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func (q *InsertQuery) ExcludeColumn(columns ...string) *InsertQuery {
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q.excludeColumn(columns)
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return q
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}
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// Value overwrites model value for the column.
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func (q *InsertQuery) Value(column string, expr string, args ...interface{}) *InsertQuery {
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if q.table == nil {
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q.err = errNilModel
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return q
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}
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q.addValue(q.table, column, expr, args)
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return q
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}
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func (q *InsertQuery) Where(query string, args ...interface{}) *InsertQuery {
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q.addWhere(schema.SafeQueryWithSep(query, args, " AND "))
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return q
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}
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func (q *InsertQuery) WhereOr(query string, args ...interface{}) *InsertQuery {
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q.addWhere(schema.SafeQueryWithSep(query, args, " OR "))
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return q
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}
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//------------------------------------------------------------------------------
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// Returning adds a RETURNING clause to the query.
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//
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// To suppress the auto-generated RETURNING clause, use `Returning("")`.
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func (q *InsertQuery) Returning(query string, args ...interface{}) *InsertQuery {
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q.addReturning(schema.SafeQuery(query, args))
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return q
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}
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//------------------------------------------------------------------------------
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// Ignore generates different queries depending on the DBMS:
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// - On MySQL, it generates `INSERT IGNORE INTO`.
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// - On PostgreSQL, it generates `ON CONFLICT DO NOTHING`.
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func (q *InsertQuery) Ignore() *InsertQuery {
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if q.db.fmter.HasFeature(feature.InsertOnConflict) {
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return q.On("CONFLICT DO NOTHING")
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}
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if q.db.fmter.HasFeature(feature.InsertIgnore) {
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q.ignore = true
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}
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return q
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}
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// Replaces generates a `REPLACE INTO` query (MySQL and MariaDB).
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func (q *InsertQuery) Replace() *InsertQuery {
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q.replace = true
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return q
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}
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//------------------------------------------------------------------------------
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func (q *InsertQuery) Operation() string {
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return "INSERT"
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}
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func (q *InsertQuery) AppendQuery(fmter schema.Formatter, b []byte) (_ []byte, err error) {
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if q.err != nil {
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return nil, q.err
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}
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fmter = formatterWithModel(fmter, q)
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b, err = q.appendWith(fmter, b)
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if err != nil {
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return nil, err
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}
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if q.replace {
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b = append(b, "REPLACE "...)
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} else {
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b = append(b, "INSERT "...)
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if q.ignore {
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b = append(b, "IGNORE "...)
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}
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}
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b = append(b, "INTO "...)
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if q.db.features.Has(feature.InsertTableAlias) && !q.on.IsZero() {
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b, err = q.appendFirstTableWithAlias(fmter, b)
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} else {
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b, err = q.appendFirstTable(fmter, b)
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}
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if err != nil {
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return nil, err
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}
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b, err = q.appendColumnsValues(fmter, b, false)
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if err != nil {
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return nil, err
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}
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b, err = q.appendOn(fmter, b)
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if err != nil {
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return nil, err
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}
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if q.hasFeature(feature.InsertReturning) && q.hasReturning() {
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b = append(b, " RETURNING "...)
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b, err = q.appendReturning(fmter, b)
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if err != nil {
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return nil, err
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}
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}
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return b, nil
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}
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func (q *InsertQuery) appendColumnsValues(
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fmter schema.Formatter, b []byte, skipOutput bool,
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) (_ []byte, err error) {
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if q.hasMultiTables() {
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if q.columns != nil {
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b = append(b, " ("...)
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b, err = q.appendColumns(fmter, b)
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if err != nil {
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return nil, err
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}
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b = append(b, ")"...)
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}
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if q.hasFeature(feature.Output) && q.hasReturning() {
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b = append(b, " OUTPUT "...)
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b, err = q.appendOutput(fmter, b)
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if err != nil {
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return nil, err
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}
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}
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b = append(b, " SELECT "...)
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if q.columns != nil {
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b, err = q.appendColumns(fmter, b)
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if err != nil {
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return nil, err
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}
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} else {
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b = append(b, "*"...)
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}
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b = append(b, " FROM "...)
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b, err = q.appendOtherTables(fmter, b)
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if err != nil {
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return nil, err
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}
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return b, nil
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}
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if m, ok := q.model.(*mapModel); ok {
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return m.appendColumnsValues(fmter, b), nil
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}
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if _, ok := q.model.(*mapSliceModel); ok {
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return nil, fmt.Errorf("Insert(*[]map[string]interface{}) is not supported")
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}
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if q.model == nil {
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return nil, errNilModel
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}
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// Build fields to populate RETURNING clause.
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fields, err := q.getFields()
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if err != nil {
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return nil, err
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}
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b = append(b, " ("...)
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b = q.appendFields(fmter, b, fields)
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b = append(b, ")"...)
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if q.hasFeature(feature.Output) && q.hasReturning() && !skipOutput {
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b = append(b, " OUTPUT "...)
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b, err = q.appendOutput(fmter, b)
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if err != nil {
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return nil, err
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}
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}
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b = append(b, " VALUES ("...)
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switch model := q.tableModel.(type) {
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case *structTableModel:
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b, err = q.appendStructValues(fmter, b, fields, model.strct)
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if err != nil {
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return nil, err
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}
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case *sliceTableModel:
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b, err = q.appendSliceValues(fmter, b, fields, model.slice)
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if err != nil {
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return nil, err
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}
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default:
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return nil, fmt.Errorf("bun: Insert does not support %T", q.tableModel)
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}
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b = append(b, ')')
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return b, nil
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}
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func (q *InsertQuery) appendStructValues(
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fmter schema.Formatter, b []byte, fields []*schema.Field, strct reflect.Value,
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) (_ []byte, err error) {
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isTemplate := fmter.IsNop()
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for i, f := range fields {
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if i > 0 {
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b = append(b, ", "...)
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}
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app, ok := q.modelValues[f.Name]
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if ok {
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b, err = app.AppendQuery(fmter, b)
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if err != nil {
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return nil, err
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}
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q.addReturningField(f)
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continue
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}
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switch {
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case isTemplate:
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b = append(b, '?')
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case q.marshalsToDefault(f, strct):
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if q.db.HasFeature(feature.DefaultPlaceholder) {
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b = append(b, "DEFAULT"...)
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} else if f.SQLDefault != "" {
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b = append(b, f.SQLDefault...)
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} else {
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b = append(b, "NULL"...)
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}
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q.addReturningField(f)
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default:
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b = f.AppendValue(fmter, b, strct)
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}
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}
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for i, v := range q.extraValues {
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if i > 0 || len(fields) > 0 {
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b = append(b, ", "...)
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}
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b, err = v.value.AppendQuery(fmter, b)
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if err != nil {
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return nil, err
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}
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}
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return b, nil
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}
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func (q *InsertQuery) appendSliceValues(
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fmter schema.Formatter, b []byte, fields []*schema.Field, slice reflect.Value,
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) (_ []byte, err error) {
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if fmter.IsNop() {
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return q.appendStructValues(fmter, b, fields, reflect.Value{})
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}
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sliceLen := slice.Len()
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for i := 0; i < sliceLen; i++ {
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if i > 0 {
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b = append(b, "), ("...)
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}
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el := indirect(slice.Index(i))
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b, err = q.appendStructValues(fmter, b, fields, el)
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if err != nil {
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return nil, err
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}
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}
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return b, nil
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}
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func (q *InsertQuery) getFields() ([]*schema.Field, error) {
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hasIdentity := q.db.features.Has(feature.Identity)
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if len(q.columns) > 0 || q.db.features.Has(feature.DefaultPlaceholder) && !hasIdentity {
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return q.baseQuery.getFields()
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}
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var strct reflect.Value
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switch model := q.tableModel.(type) {
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case *structTableModel:
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strct = model.strct
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case *sliceTableModel:
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if model.sliceLen == 0 {
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return nil, fmt.Errorf("bun: Insert(empty %T)", model.slice.Type())
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}
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strct = indirect(model.slice.Index(0))
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default:
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return nil, errNilModel
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}
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fields := make([]*schema.Field, 0, len(q.table.Fields))
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for _, f := range q.table.Fields {
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if hasIdentity && f.AutoIncrement {
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q.addReturningField(f)
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continue
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}
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if f.NotNull && q.marshalsToDefault(f, strct) {
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q.addReturningField(f)
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continue
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}
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fields = append(fields, f)
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}
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return fields, nil
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}
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// marshalsToDefault checks if the value will be marshaled as DEFAULT or NULL (if DEFAULT placeholder is not supported)
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// when appending it to the VALUES clause in place of the given field.
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func (q InsertQuery) marshalsToDefault(f *schema.Field, v reflect.Value) bool {
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return (f.IsPtr && f.HasNilValue(v)) ||
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(f.HasZeroValue(v) && (f.NullZero || f.SQLDefault != ""))
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}
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func (q *InsertQuery) appendFields(
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fmter schema.Formatter, b []byte, fields []*schema.Field,
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) []byte {
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b = appendColumns(b, "", fields)
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for i, v := range q.extraValues {
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if i > 0 || len(fields) > 0 {
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b = append(b, ", "...)
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}
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b = fmter.AppendIdent(b, v.column)
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}
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return b
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}
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//------------------------------------------------------------------------------
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func (q *InsertQuery) On(s string, args ...interface{}) *InsertQuery {
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q.on = schema.SafeQuery(s, args)
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return q
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}
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func (q *InsertQuery) Set(query string, args ...interface{}) *InsertQuery {
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q.addSet(schema.SafeQuery(query, args))
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return q
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}
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func (q *InsertQuery) appendOn(fmter schema.Formatter, b []byte) (_ []byte, err error) {
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if q.on.IsZero() {
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return b, nil
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}
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b = append(b, " ON "...)
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b, err = q.on.AppendQuery(fmter, b)
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if err != nil {
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return nil, err
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}
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if len(q.set) > 0 {
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if fmter.HasFeature(feature.InsertOnDuplicateKey) {
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b = append(b, ' ')
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} else {
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b = append(b, " SET "...)
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}
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b, err = q.appendSet(fmter, b)
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if err != nil {
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return nil, err
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}
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} else if q.onConflictDoUpdate() {
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fields, err := q.getDataFields()
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if err != nil {
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return nil, err
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}
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if len(fields) == 0 {
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fields = q.tableModel.Table().DataFields
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}
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b = q.appendSetExcluded(b, fields)
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} else if q.onDuplicateKeyUpdate() {
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fields, err := q.getDataFields()
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if err != nil {
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return nil, err
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}
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if len(fields) == 0 {
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fields = q.tableModel.Table().DataFields
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}
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b = q.appendSetValues(b, fields)
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}
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if len(q.where) > 0 {
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b = append(b, " WHERE "...)
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b, err = appendWhere(fmter, b, q.where)
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if err != nil {
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return nil, err
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}
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}
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return b, nil
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}
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func (q *InsertQuery) onConflictDoUpdate() bool {
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return strings.HasSuffix(strings.ToUpper(q.on.Query), " DO UPDATE")
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}
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func (q *InsertQuery) onDuplicateKeyUpdate() bool {
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return strings.ToUpper(q.on.Query) == "DUPLICATE KEY UPDATE"
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}
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func (q *InsertQuery) appendSetExcluded(b []byte, fields []*schema.Field) []byte {
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b = append(b, " SET "...)
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for i, f := range fields {
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if i > 0 {
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b = append(b, ", "...)
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}
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b = append(b, f.SQLName...)
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b = append(b, " = EXCLUDED."...)
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b = append(b, f.SQLName...)
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}
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return b
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}
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func (q *InsertQuery) appendSetValues(b []byte, fields []*schema.Field) []byte {
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b = append(b, " "...)
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for i, f := range fields {
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if i > 0 {
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b = append(b, ", "...)
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}
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b = append(b, f.SQLName...)
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b = append(b, " = VALUES("...)
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b = append(b, f.SQLName...)
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b = append(b, ")"...)
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}
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return b
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}
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//------------------------------------------------------------------------------
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func (q *InsertQuery) Scan(ctx context.Context, dest ...interface{}) error {
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_, err := q.scanOrExec(ctx, dest, true)
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return err
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}
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func (q *InsertQuery) Exec(ctx context.Context, dest ...interface{}) (sql.Result, error) {
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return q.scanOrExec(ctx, dest, len(dest) > 0)
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}
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func (q *InsertQuery) scanOrExec(
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ctx context.Context, dest []interface{}, hasDest bool,
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) (sql.Result, error) {
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if q.err != nil {
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return nil, q.err
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}
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if q.table != nil {
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if err := q.beforeInsertHook(ctx); err != nil {
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return nil, err
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}
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}
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// Run append model hooks before generating the query.
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if err := q.beforeAppendModel(ctx, q); err != nil {
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return nil, err
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}
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// Generate the query before checking hasReturning.
|
|
queryBytes, err := q.AppendQuery(q.db.fmter, q.db.makeQueryBytes())
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
useScan := hasDest || (q.hasReturning() && q.hasFeature(feature.InsertReturning|feature.Output))
|
|
var model Model
|
|
|
|
if useScan {
|
|
var err error
|
|
model, err = q.getModel(dest)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
}
|
|
|
|
query := internal.String(queryBytes)
|
|
var res sql.Result
|
|
|
|
if useScan {
|
|
res, err = q.scan(ctx, q, query, model, hasDest)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
} else {
|
|
res, err = q.exec(ctx, q, query)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
if err := q.tryLastInsertID(res, dest); err != nil {
|
|
return nil, err
|
|
}
|
|
}
|
|
|
|
if q.table != nil {
|
|
if err := q.afterInsertHook(ctx); err != nil {
|
|
return nil, err
|
|
}
|
|
}
|
|
|
|
return res, nil
|
|
}
|
|
|
|
func (q *InsertQuery) beforeInsertHook(ctx context.Context) error {
|
|
if hook, ok := q.table.ZeroIface.(BeforeInsertHook); ok {
|
|
if err := hook.BeforeInsert(ctx, q); err != nil {
|
|
return err
|
|
}
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func (q *InsertQuery) afterInsertHook(ctx context.Context) error {
|
|
if hook, ok := q.table.ZeroIface.(AfterInsertHook); ok {
|
|
if err := hook.AfterInsert(ctx, q); err != nil {
|
|
return err
|
|
}
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func (q *InsertQuery) tryLastInsertID(res sql.Result, dest []interface{}) error {
|
|
if q.db.features.Has(feature.Returning) ||
|
|
q.db.features.Has(feature.Output) ||
|
|
q.table == nil ||
|
|
len(q.table.PKs) != 1 ||
|
|
!q.table.PKs[0].AutoIncrement {
|
|
return nil
|
|
}
|
|
|
|
id, err := res.LastInsertId()
|
|
if err != nil {
|
|
return err
|
|
}
|
|
if id == 0 {
|
|
return nil
|
|
}
|
|
|
|
model, err := q.getModel(dest)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
pk := q.table.PKs[0]
|
|
switch model := model.(type) {
|
|
case *structTableModel:
|
|
if err := pk.ScanValue(model.strct, id); err != nil {
|
|
return err
|
|
}
|
|
case *sliceTableModel:
|
|
sliceLen := model.slice.Len()
|
|
for i := 0; i < sliceLen; i++ {
|
|
strct := indirect(model.slice.Index(i))
|
|
if err := pk.ScanValue(strct, id); err != nil {
|
|
return err
|
|
}
|
|
id++
|
|
}
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|
|
func (q *InsertQuery) String() string {
|
|
buf, err := q.AppendQuery(q.db.Formatter(), nil)
|
|
if err != nil {
|
|
panic(err)
|
|
}
|
|
|
|
return string(buf)
|
|
}
|