| // Copyright 2015 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 bigquery |
| |
| import ( |
| "errors" |
| |
| "golang.org/x/net/context" |
| ) |
| |
| func (conf *readTableConf) fetch(ctx context.Context, s service, token string) (*readDataResult, error) { |
| return s.readTabledata(ctx, conf, token) |
| } |
| |
| func (conf *readTableConf) setPaging(pc *pagingConf) { conf.paging = *pc } |
| |
| // Read fetches the contents of the table. |
| func (t *Table) Read(ctx context.Context) *RowIterator { |
| return newRowIterator(ctx, t.c.service, &readTableConf{ |
| projectID: t.ProjectID, |
| datasetID: t.DatasetID, |
| tableID: t.TableID, |
| }) |
| } |
| |
| func (conf *readQueryConf) fetch(ctx context.Context, s service, token string) (*readDataResult, error) { |
| return s.readQuery(ctx, conf, token) |
| } |
| |
| func (conf *readQueryConf) setPaging(pc *pagingConf) { conf.paging = *pc } |
| |
| // Read fetches the results of a query job. |
| // If j is not a query job, Read returns an error. |
| func (j *Job) Read(ctx context.Context) (*RowIterator, error) { |
| if !j.isQuery { |
| return nil, errors.New("Cannot read from a non-query job") |
| } |
| return newRowIterator(ctx, j.service, &readQueryConf{ |
| projectID: j.projectID, |
| jobID: j.jobID, |
| }), nil |
| } |
| |
| // Read submits a query for execution and returns the results via a RowIterator. |
| // It is a shorthand for Query.Run followed by Job.Read. |
| func (q *Query) Read(ctx context.Context) (*RowIterator, error) { |
| job, err := q.Run(ctx) |
| if err != nil { |
| return nil, err |
| } |
| return job.Read(ctx) |
| } |