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56 lines
1.6 KiB
56 lines
1.6 KiB
/*
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* MinIO Cloud Storage, (C) 2019 MinIO, Inc.
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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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*/
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package sql
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import (
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"io"
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"github.com/bcicen/jstream"
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)
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// SelectObjectFormat specifies the format of the underlying data
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type SelectObjectFormat int
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const (
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// SelectFmtUnknown - unknown format (default value)
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SelectFmtUnknown SelectObjectFormat = iota
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// SelectFmtCSV - CSV format
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SelectFmtCSV
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// SelectFmtJSON - JSON format
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SelectFmtJSON
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// SelectFmtParquet - Parquet format
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SelectFmtParquet
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)
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// Record - is a type containing columns and their values.
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type Record interface {
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Get(name string) (*Value, error)
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Set(name string, value *Value) error
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WriteCSV(writer io.Writer, fieldDelimiter rune) error
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WriteJSON(writer io.Writer) error
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// CopyFrom will copy all records from the incoming and append them to the existing records.
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// The source record must be of a similar type as destination.
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CopyFrom(src Record) error
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Reset()
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// Returns underlying representation
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Raw() (SelectObjectFormat, interface{})
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// Replaces the underlying data
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Replace(k jstream.KVS) error
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}
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