From 612b82714b3e6660bf702f801ab96aacb3432e1f Mon Sep 17 00:00:00 2001 From: Dmitry Vyukov Date: Tue, 13 Jun 2017 19:23:18 +0200 Subject: vendor: vendor dependencies All dependencies are vendored with: go get github.com/golang/dep dep init If necessary, can be updated with: dep ensure -update Fixes #215 --- vendor/cloud.google.com/go/spanner/statement.go | 78 +++++++++++++++++++++++++ 1 file changed, 78 insertions(+) create mode 100644 vendor/cloud.google.com/go/spanner/statement.go (limited to 'vendor/cloud.google.com/go/spanner/statement.go') diff --git a/vendor/cloud.google.com/go/spanner/statement.go b/vendor/cloud.google.com/go/spanner/statement.go new file mode 100644 index 000000000..8e422b09c --- /dev/null +++ b/vendor/cloud.google.com/go/spanner/statement.go @@ -0,0 +1,78 @@ +/* +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 +} -- cgit mrf-deployment