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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 zorm
// IEntityStruct "struct"实体类的接口,所有的struct实体类都要实现这个接口
// IEntityStruct The interface of the "struct" entity class, all struct entity classes must implement this interface
type IEntityStruct interface {
// 获取表名称
// Get the table name.
GetTableName() string
// 获取数据库表的主键字段名称.因为要兼容Map,只能是数据库的字段名称
// Get the primary key field name of the database table. Because it is compatible with Map, it can only be the field name of the database
GetPKColumnName() string
// GetPkSequence 主键序列
// GetPkSequence Primary key sequence
GetPkSequence() string
}
// IEntityMap 使用Map保存数据,用于不方便使用struct的场景,如果主键是自增或者序列,不要"entityMap.Set"主键的值
// IEntityMap Use Map to save data for scenarios where it is not convenient to use struct
// If the primary key is auto-increment or sequence, do not "entity Map.Set" the value of the primary key
type IEntityMap interface {
// 获取表名称
// Get the table name
GetTableName() string
// 获取数据库表的主键字段名称.因为要兼容Map,只能是数据库的字段名称.
// Get the primary key field name of the database table. Because it is compatible with Map, it can only be the field name of the database.
GetPKColumnName() string
// GetEntityMapPkSequence 主键序列,不能使用GetPkSequence方法名,避免默认实现了IEntityStruct接口
// GetEntityMapPkSequence primary key sequence, you cannot use the GetPkSequence method name, to avoid the default implementation of IEntityStruct interface
GetEntityMapPkSequence() string
// GetDBFieldMap 针对Map类型,记录数据库字段
// GetDBFieldMap For Map type, record database fields.
GetDBFieldMap() map[string]interface{}
// GetDBFieldMapKey 按照Set的先后顺序记录key值,也就是数据库字段,用于SQL排序
// GetDBFieldMapKey records the key value, that is, the database field, in the order of the Set, which is used for SQL sorting
GetDBFieldMapKey() []string
// 设置数据库字段的值
// Set the value of a database field.
Set(key string, value interface{}) map[string]interface{}
}
// EntityStruct "IBaseEntity" 的基础实现,所有的实体类都匿名注入.这样就类似实现继承了,如果接口增加方法,调整这个默认实现即可
// EntityStruct The basic implementation of "IBaseEntity", all entity classes are injected anonymously
// This is similar to implementation inheritance. If the interface adds methods, adjust the default implementation
type EntityStruct struct{}
// 默认数据库的主键列名
// Primary key column name of the default database
const defaultPkName = "id"
//GetTableName 获取表名称,必须有具体的Struct实现,类似java的抽象方法,避免手误忘记写表名.如果有扩展需求,建议使用接口进行扩展,不要默认实现GetTableName
/*
func (entity *EntityStruct) GetTableName() string {
return ""
}
*/
// GetPKColumnName 获取数据库表的主键字段名称.因为要兼容Map,只能是数据库的字段名称
// GetPKColumnName Get the primary key field name of the database table
// Because it is compatible with Map, it can only be the field name of the database
func (entity *EntityStruct) GetPKColumnName() string {
return defaultPkName
}
// var defaultPkSequence = make(map[string]string, 0)
// GetPkSequence 主键序列
// GetPkSequence Primary key sequence
func (entity *EntityStruct) GetPkSequence() string {
return ""
}
//-------------------------------------------------------------------------//
// EntityMap IEntityMap的基础实现,可以直接使用或者匿名注入
type EntityMap struct {
// 表名
tableName string
// 主键列名
PkColumnName string
// 主键序列,如果有值,优先级最高
PkSequence string
// 数据库字段,不暴露外部
dbFieldMap map[string]interface{}
// 列名,记录顺序
dbFieldMapKey []string
}
// NewEntityMap 初始化Map,必须传入表名称
func NewEntityMap(tbName string) *EntityMap {
entityMap := EntityMap{}
entityMap.dbFieldMap = map[string]interface{}{}
entityMap.tableName = tbName
entityMap.PkColumnName = defaultPkName
entityMap.dbFieldMapKey = make([]string, 0)
return &entityMap
}
// GetTableName 获取表名称
func (entity *EntityMap) GetTableName() string {
return entity.tableName
}
// GetPKColumnName 获取数据库表的主键字段名称.因为要兼容Map,只能是数据库的字段名称
func (entity *EntityMap) GetPKColumnName() string {
return entity.PkColumnName
}
// GetEntityMapPkSequence 主键序列,不能使用GetPkSequence方法名,避免默认实现了IEntityStruct接口
// GetEntityMapPkSequence primary key sequence, you cannot use the GetPkSequence method name, to avoid the default implementation of IEntityStruct interface
func (entity *EntityMap) GetEntityMapPkSequence() string {
return entity.PkSequence
}
// GetDBFieldMap 针对Map类型,记录数据库字段
// GetDBFieldMap For Map type, record database fields
func (entity *EntityMap) GetDBFieldMap() map[string]interface{} {
return entity.dbFieldMap
}
// GetDBFieldMapKey 按照Set的先后顺序记录key值,也就是数据库字段,用于SQL排序
// GetDBFieldMapKey records the key value, that is, the database field, in the order of the Set, which is used for SQL sorting
func (entity *EntityMap) GetDBFieldMapKey() []string {
return entity.dbFieldMapKey
}
// Set 设置数据库字段
// Set Set database fields
func (entity *EntityMap) Set(key string, value interface{}) map[string]interface{} {
_, ok := entity.dbFieldMap[key]
if !ok { // 如果不存在
entity.dbFieldMapKey = append(entity.dbFieldMapKey, key)
}
entity.dbFieldMap[key] = value
return entity.dbFieldMap
}
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