diff options
Diffstat (limited to 'vendor/cloud.google.com/go/spanner/statement.go')
| -rw-r--r-- | vendor/cloud.google.com/go/spanner/statement.go | 78 |
1 files changed, 0 insertions, 78 deletions
diff --git a/vendor/cloud.google.com/go/spanner/statement.go b/vendor/cloud.google.com/go/spanner/statement.go deleted file mode 100644 index 8e422b09c..000000000 --- a/vendor/cloud.google.com/go/spanner/statement.go +++ /dev/null @@ -1,78 +0,0 @@ -/* -Copyright 2017 Google Inc. All Rights Reserved. - -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 spanner - -import ( - "fmt" - - proto3 "github.com/golang/protobuf/ptypes/struct" - - sppb "google.golang.org/genproto/googleapis/spanner/v1" - "google.golang.org/grpc/codes" -) - -// A Statement is a SQL query with named parameters. -// -// A parameter placeholder consists of '@' followed by the parameter name. -// Parameter names consist of any combination of letters, numbers, and -// underscores. Names may be entirely numeric (e.g., "WHERE m.id = @5"). -// Parameters may appear anywhere that a literal value is expected. The same -// parameter name may be used more than once. It is an error to execute a -// statement with unbound parameters. On the other hand, it is allowable to -// bind parameter names that are not used. -// -// See the documentation of the Row type for how Go types are mapped to Cloud -// Spanner types. -type Statement struct { - SQL string - Params map[string]interface{} -} - -// NewStatement returns a Statement with the given SQL and an empty Params map. -func NewStatement(sql string) Statement { - return Statement{SQL: sql, Params: map[string]interface{}{}} -} - -// errBindParam returns error for not being able to bind parameter to query request. -func errBindParam(k string, v interface{}, err error) error { - if err == nil { - return nil - } - se, ok := toSpannerError(err).(*Error) - if !ok { - return spannerErrorf(codes.InvalidArgument, "failed to bind query parameter(name: %q, value: %q), error = <%v>", k, v, err) - } - se.decorate(fmt.Sprintf("failed to bind query parameter(name: %q, value: %q)", k, v)) - return se -} - -// bindParams binds parameters in a Statement to a sppb.ExecuteSqlRequest. -func (s *Statement) bindParams(r *sppb.ExecuteSqlRequest) error { - r.Params = &proto3.Struct{ - Fields: map[string]*proto3.Value{}, - } - r.ParamTypes = map[string]*sppb.Type{} - for k, v := range s.Params { - val, t, err := encodeValue(v) - if err != nil { - return errBindParam(k, v, err) - } - r.Params.Fields[k] = val - r.ParamTypes[k] = t - } - return nil -} |
