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// Licensed to the Apache Software Foundation (ASF) under one
// or more contributor license agreements. See the NOTICE file
// distributed with this work for additional information
// regarding copyright ownership. The ASF licenses this file
// to you 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 flightsql
import (
"github.com/apache/arrow-go/v18/arrow"
"github.com/apache/arrow-go/v18/arrow/array"
)
const (
strValIdx arrow.UnionTypeCode = iota
boolValIdx
bigintValIdx
int32BitMaskIdx
strListIdx
int32ToInt32ListIdx
)
// sqlInfoResultBldr is a helper for building up the dense union response
// of a SqlInfo request.
type sqlInfoResultBldr struct {
valueBldr *array.DenseUnionBuilder
strBldr *array.StringBuilder
boolBldr *array.BooleanBuilder
bigintBldr *array.Int64Builder
int32BitmaskBldr *array.Int32Builder
strListBldr *array.ListBuilder
int32Toint32ListBldr *array.MapBuilder
}
func newSqlInfoResultBuilder(valueBldr *array.DenseUnionBuilder) *sqlInfoResultBldr {
return &sqlInfoResultBldr{
valueBldr: valueBldr,
strBldr: valueBldr.Child(int(strValIdx)).(*array.StringBuilder),
boolBldr: valueBldr.Child(int(boolValIdx)).(*array.BooleanBuilder),
bigintBldr: valueBldr.Child(int(bigintValIdx)).(*array.Int64Builder),
int32BitmaskBldr: valueBldr.Child(int(int32BitMaskIdx)).(*array.Int32Builder),
strListBldr: valueBldr.Child(int(strListIdx)).(*array.ListBuilder),
int32Toint32ListBldr: valueBldr.Child(int(int32ToInt32ListIdx)).(*array.MapBuilder),
}
}
func (s *sqlInfoResultBldr) Append(v interface{}) {
switch v := v.(type) {
case string:
s.valueBldr.Append(strValIdx)
s.strBldr.Append(v)
case bool:
s.valueBldr.Append(boolValIdx)
s.boolBldr.Append(v)
case int64:
s.valueBldr.Append(bigintValIdx)
s.bigintBldr.Append(v)
case int32:
s.valueBldr.Append(int32BitMaskIdx)
s.int32BitmaskBldr.Append(v)
case []string:
s.valueBldr.Append(strListIdx)
s.strListBldr.Append(true)
chld := s.strListBldr.ValueBuilder().(*array.StringBuilder)
chld.AppendValues(v, nil)
case map[int32][]int32:
s.valueBldr.Append(int32ToInt32ListIdx)
s.int32Toint32ListBldr.Append(true)
kb := s.int32Toint32ListBldr.KeyBuilder().(*array.Int32Builder)
ib := s.int32Toint32ListBldr.ItemBuilder().(*array.ListBuilder)
ch := ib.ValueBuilder().(*array.Int32Builder)
for key, val := range v {
kb.Append(key)
ib.Append(true)
for _, c := range val {
ch.Append(c)
}
}
}
}
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