github.com/matrixorigin/matrixone@v1.2.0/pkg/txn/storage/memorystorage/memorytable/iter.go (about)

     1  // Copyright 2022 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 memorytable
    16  
    17  // Iter represents a generic iterator
    18  type Iter[T any] interface {
    19  	First() bool
    20  	Next() bool
    21  	Read() (T, error)
    22  	Close() error
    23  }
    24  
    25  // SeekIter represents a generic seekable iterator
    26  type SeekIter[T any] interface {
    27  	Iter[T]
    28  	Seek(T) bool
    29  }