c0b4bf0a3e
select * , select column names have been implemented for CSV. select * is implemented for JSON.
111 lines
2.8 KiB
Go
111 lines
2.8 KiB
Go
/*
|
|
* Minio Cloud Storage, (C) 2018 Minio, Inc.
|
|
*
|
|
* 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 s3select
|
|
|
|
import (
|
|
"encoding/xml"
|
|
)
|
|
|
|
// CSVFileHeaderInfo -Can be either USE IGNORE OR NONE, defines what to do with
|
|
// the first row
|
|
type CSVFileHeaderInfo string
|
|
|
|
// Constants for file header info.
|
|
const (
|
|
CSVFileHeaderInfoNone CSVFileHeaderInfo = "NONE"
|
|
CSVFileHeaderInfoIgnore = "IGNORE"
|
|
CSVFileHeaderInfoUse = "USE"
|
|
)
|
|
|
|
// The maximum character per record is set to be 1 MB.
|
|
const (
|
|
MaxCharsPerRecord = 1000000
|
|
)
|
|
|
|
// SelectCompressionType - ONLY GZIP is supported
|
|
type SelectCompressionType string
|
|
|
|
// JSONType determines json input serialization type.
|
|
type JSONType string
|
|
|
|
// Constants for compression types under select API.
|
|
const (
|
|
SelectCompressionNONE SelectCompressionType = "NONE"
|
|
SelectCompressionGZIP = "GZIP"
|
|
SelectCompressionBZIP = "BZIP2"
|
|
)
|
|
|
|
// CSVQuoteFields - Can be either Always or AsNeeded
|
|
type CSVQuoteFields string
|
|
|
|
// Constants for csv quote styles.
|
|
const (
|
|
CSVQuoteFieldsAlways CSVQuoteFields = "Always"
|
|
CSVQuoteFieldsAsNeeded = "AsNeeded"
|
|
)
|
|
|
|
// QueryExpressionType - Currently can only be SQL
|
|
type QueryExpressionType string
|
|
|
|
// Constants for expression type.
|
|
const (
|
|
QueryExpressionTypeSQL QueryExpressionType = "SQL"
|
|
)
|
|
|
|
// Constants for JSONTypes.
|
|
const (
|
|
JSONTypeDocument JSONType = "DOCUMENT"
|
|
JSONLinesType = "LINES"
|
|
)
|
|
|
|
// ObjectSelectRequest - represents the input select body
|
|
type ObjectSelectRequest struct {
|
|
XMLName xml.Name `xml:"SelectObjectContentRequest" json:"-"`
|
|
Expression string
|
|
ExpressionType QueryExpressionType
|
|
InputSerialization struct {
|
|
CompressionType SelectCompressionType
|
|
Parquet *struct{}
|
|
CSV *struct {
|
|
FileHeaderInfo CSVFileHeaderInfo
|
|
RecordDelimiter string
|
|
FieldDelimiter string
|
|
QuoteCharacter string
|
|
QuoteEscapeCharacter string
|
|
Comments string
|
|
}
|
|
JSON *struct {
|
|
Type JSONType
|
|
}
|
|
}
|
|
OutputSerialization struct {
|
|
CSV *struct {
|
|
QuoteFields CSVQuoteFields
|
|
RecordDelimiter string
|
|
FieldDelimiter string
|
|
QuoteCharacter string
|
|
QuoteEscapeCharacter string
|
|
}
|
|
JSON *struct {
|
|
RecordDelimiter string
|
|
}
|
|
}
|
|
RequestProgress struct {
|
|
Enabled bool
|
|
}
|
|
}
|