github.com/matrixorigin/matrixone@v1.2.0/pkg/vm/engine/tae/containers/colview.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  
    15  package containers
    16  
    17  // TODO: remove this ColumnView later
    18  // Use Batch with one vector instead
    19  type ColumnView struct {
    20  	*BaseView
    21  	ColIdx int
    22  	data   Vector
    23  }
    24  
    25  func NewColumnView(colIdx int) *ColumnView {
    26  	return &ColumnView{
    27  		BaseView: &BaseView{},
    28  		ColIdx:   colIdx,
    29  	}
    30  }
    31  
    32  func (view *ColumnView) Orphan() Vector {
    33  	data := view.data
    34  	view.data = nil
    35  	return data
    36  }
    37  
    38  func (view *ColumnView) SetData(data Vector) {
    39  	view.data = data
    40  }
    41  
    42  func (view *ColumnView) ApplyDeletes() Vector {
    43  	if view.DeleteMask.IsEmpty() {
    44  		return view.data
    45  	}
    46  	view.data.CompactByBitmap(view.DeleteMask)
    47  	view.DeleteMask = nil
    48  	return view.data
    49  }
    50  
    51  func (view *ColumnView) GetData() Vector {
    52  	return view.data
    53  }
    54  
    55  func (view *ColumnView) Length() int {
    56  	return view.data.Length()
    57  }
    58  
    59  func (view *ColumnView) String() string {
    60  	if view.data != nil {
    61  		return view.data.String()
    62  	}
    63  	return "empty"
    64  }
    65  
    66  func (view *ColumnView) GetValue(row int) (any, bool) {
    67  	return view.data.Get(row), view.data.IsNull(row)
    68  }
    69  
    70  func (view *ColumnView) IsDeleted(row int) bool {
    71  	return view.DeleteMask.Contains(uint64(row))
    72  }
    73  
    74  func (view *ColumnView) Close() {
    75  	if view.data != nil {
    76  		view.data.Close()
    77  	}
    78  	view.data = nil
    79  	view.DeleteMask = nil
    80  }