65 lines
2 KiB
Go
65 lines
2 KiB
Go
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// Copyright 2015 Google Inc. All Rights Reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package bigquery
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import (
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"errors"
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"golang.org/x/net/context"
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)
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func (conf *readTableConf) fetch(ctx context.Context, s service, token string) (*readDataResult, error) {
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return s.readTabledata(ctx, conf, token)
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}
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func (conf *readTableConf) setPaging(pc *pagingConf) { conf.paging = *pc }
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// Read fetches the contents of the table.
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func (t *Table) Read(ctx context.Context) *RowIterator {
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return newRowIterator(ctx, t.c.service, &readTableConf{
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projectID: t.ProjectID,
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datasetID: t.DatasetID,
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tableID: t.TableID,
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})
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}
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func (conf *readQueryConf) fetch(ctx context.Context, s service, token string) (*readDataResult, error) {
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return s.readQuery(ctx, conf, token)
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}
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func (conf *readQueryConf) setPaging(pc *pagingConf) { conf.paging = *pc }
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// Read fetches the results of a query job.
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// If j is not a query job, Read returns an error.
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func (j *Job) Read(ctx context.Context) (*RowIterator, error) {
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if !j.isQuery {
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return nil, errors.New("Cannot read from a non-query job")
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}
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return newRowIterator(ctx, j.service, &readQueryConf{
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projectID: j.projectID,
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jobID: j.jobID,
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}), nil
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}
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// Read submits a query for execution and returns the results via a RowIterator.
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// It is a shorthand for Query.Run followed by Job.Read.
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func (q *Query) Read(ctx context.Context) (*RowIterator, error) {
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job, err := q.Run(ctx)
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if err != nil {
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return nil, err
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}
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return job.Read(ctx)
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}
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