github.com/pingcap/tiflow@v0.0.0-20240520035814-5bf52d54e205/dm/config/expression_filter.go (about)

     1  // Copyright 2021 PingCAP, Inc.
     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  // See the License for the specific language governing permissions and
    12  // limitations under the License.
    13  
    14  package config
    15  
    16  // TODO: move related struct to tidb-tools
    17  
    18  // ExpressionFilter represents a filter that will be applied on row changes.
    19  // one ExpressionFilter can only have one of (insert, update, delete) expressions.
    20  // there are two update expressions, which form an AND logic. If user omits one expression, DM will use "TRUE" for it.
    21  type ExpressionFilter struct {
    22  	Schema             string `yaml:"schema" toml:"schema" json:"schema"`
    23  	Table              string `yaml:"table" toml:"table" json:"table"`
    24  	InsertValueExpr    string `yaml:"insert-value-expr" toml:"insert-value-expr" json:"insert-value-expr"`
    25  	UpdateOldValueExpr string `yaml:"update-old-value-expr" toml:"update-old-value-expr" json:"update-old-value-expr"`
    26  	UpdateNewValueExpr string `yaml:"update-new-value-expr" toml:"update-new-value-expr" json:"update-new-value-expr"`
    27  	DeleteValueExpr    string `yaml:"delete-value-expr" toml:"delete-value-expr" json:"delete-value-expr"`
    28  }