mirror of
https://github.com/featurebasedb/featurebase.git
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73 lines
1.9 KiB
Go
73 lines
1.9 KiB
Go
// Copyright 2020 Pilosa Corp.
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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 pgtest
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import (
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"context"
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"errors"
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"github.com/pilosa/pilosa/v2/pg"
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)
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// HandlerFunc implements a postgres query handler with a function.
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type HandlerFunc func(context.Context, pg.QueryResultWriter, pg.Query) error
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// HandleQuery calls the user's query handler function.
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func (h HandlerFunc) HandleQuery(ctx context.Context, w pg.QueryResultWriter, q pg.Query) error {
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return h(ctx, w, q)
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}
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var _ pg.QueryHandler = HandlerFunc(nil)
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// ResultSet is a QueryResultWriter that accumulates results in a slice.
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type ResultSet struct {
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Columns []pg.ColumnInfo
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Data [][]string
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ResultTag string
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}
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// WriteHeader writes headers to the result set.
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func (rs *ResultSet) WriteHeader(cols ...pg.ColumnInfo) error {
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if rs.Columns != nil {
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return errors.New("double-write of headers")
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}
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colsCopy := make([]pg.ColumnInfo, len(cols))
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copy(colsCopy, cols)
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rs.Columns = colsCopy
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return nil
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}
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// WriteRowText writes a row to the result set.
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func (rs *ResultSet) WriteRowText(vals ...string) error {
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if rs.Columns == nil {
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return errors.New("wrote a row without headers")
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}
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row := make([]string, len(vals))
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copy(row, vals)
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rs.Data = append(rs.Data, row)
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return nil
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}
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// Tag applies a tag to the result set.
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func (rs *ResultSet) Tag(tag string) {
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rs.ResultTag = tag
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}
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var _ pg.QueryResultWriter = (*ResultSet)(nil)
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