github.com/matrixorigin/matrixone@v0.7.0/pkg/sql/colexec/mergeblock/mergeblock.go (about)

     1  // Copyright 2021 Matrix Origin
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //	http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  package mergeblock
    15  
    16  import (
    17  	"bytes"
    18  
    19  	"github.com/matrixorigin/matrixone/pkg/container/batch"
    20  	"github.com/matrixorigin/matrixone/pkg/vm/process"
    21  )
    22  
    23  func String(_ any, buf *bytes.Buffer) {
    24  	buf.WriteString(" MergeS3BlocksMetaLoc ")
    25  }
    26  
    27  func Prepare(proc *process.Process, arg any) error {
    28  	ap := arg.(*Argument)
    29  	ap.container = new(Container)
    30  	ap.container.mp = make(map[int]*batch.Batch)
    31  	return nil
    32  }
    33  
    34  func Call(idx int, proc *process.Process, arg any, isFirst bool, isLast bool) (bool, error) {
    35  	var err error
    36  	ap := arg.(*Argument)
    37  	bat := proc.Reg.InputBatch
    38  	if bat == nil {
    39  		return true, nil
    40  	}
    41  	if len(bat.Zs) == 0 {
    42  		return false, nil
    43  	}
    44  	if err := ap.Split(proc, bat); err != nil {
    45  		return false, err
    46  	}
    47  	if !ap.notFreeBatch {
    48  		defer func() {
    49  			for k := range ap.container.mp {
    50  				ap.container.mp[k].Clean(proc.GetMPool())
    51  			}
    52  		}()
    53  	}
    54  	for i := range ap.Unique_tbls {
    55  		if err = ap.Unique_tbls[i].Write(proc.Ctx, ap.container.mp[i+1]); err != nil {
    56  			return false, err
    57  		}
    58  	}
    59  	if err = ap.Tbl.Write(proc.Ctx, ap.container.mp[0]); err != nil {
    60  		return false, err
    61  	}
    62  	return false, nil
    63  }