# README
sqlx template & database factory extension
Features
- sql template
- database factory
更新版本
GOPROXY=https://goproxy.cn go list -m github.com/gnodux/sqlxx
GOPROXY=https://proxy.golang.org go list -m github.com/gnodux/sqlxx
usage
# Packages
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Package expr package 用于生成sql语句.
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# Functions
Boost 对mapper的Field进行wrap处理、绑定数据源、绑定sql模版、绑定事务级别、绑定是否只读等 dest: mapper对象 ds: 数据源.
BoostMapper 对mapper的Field进行wrap处理、绑定数据源、绑定sql模版、绑定事务级别、绑定是否只读等
change: 2023-7-12 修改绑定策略，从延迟绑定修改到boost时绑定，动态打开数据库的需求不高，且模版延迟绑定和获取数据库需要使用到锁，对性能有一定影响.
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EvalBeforeHook eval before hook 如果entity是nil，那么不会调用任何hook 如果entity是struct 而非指针，那么在调用EvalBeforeHook之前，需要先将entity转换为指针.
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NewExecFuncWith 创建一个 ExecFunc db:*DB 数据库 tpl: SQL模版或者inline SQL.
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NewMapper 创建一个mapper dataSource: 数据源.
NewMapperWith 创建一个mapper factory: 数据库管理器 dataSource: 数据源.
NewNamedExecFuncWith 创建一个 NamedExecFunc db:*DB 数据库管理器 tpl: SQL模版或者inline SQL.
NewNamedGetFuncWith 创建一个 NamedGetFunc m: Factory 数据库管理器 db: 数据库名称 tpl: SQL模版或者inline SQL.
NewNamedSelectFunc 创建一个 NamedSelectFunc db: 数据库名称 tpl: SQL模版或者inline SQL.
NewNamedSelectFuncWith 创建一个 NamedSelectFunc manager: Factory 数据库管理器 db: 数据库名称 tpl: SQL模版或者inline SQL.
NewSelectFunc 创建一个 SelectFunc db: 数据库名称（使用默认的数据库管理器 StdFactory） tpl: SQL模版或者inline SQL.
NewSelectFuncWith 创建一个 SelectFunc m: Factory 数据库管理器 db: 数据库名称 tpl: SQL模版或者inline SQL.
NewTxFuncWith 创建一个 TxFunc db: 数据库名称 tpl: SQL模版或者inline SQL.
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# Constants
TagDS 数据源.
TagReadonly 事务是否只读.
TagSQL sql模版（或inline sql）.
TagTx 事务级别.
TxDefault 默认事务级别.
TxLinearizable 事务级别：Linearizable.
TxReadCommitted 事务级别：ReadCommitted.
TxReadUncommitted 事务级别：ReadUncommitted.
TxRepeatableRead 事务级别：RepeatableRead.
TxSerializable 事务级别：Serializable.
TxSnapshot 事务级别：Snapshot.
TxWriteCommitted 事务级别：WriteCommitted.
# Variables
ClearTemplateFS clear sql template from filesystem.
CreateAndSet initialize a db.
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Get a db from.
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MustGet a db,if db not exists,raise a panic.
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Set a db.
SetConstructor set a db with constructors func.
SetTemplateFS set sql template from filesystem.
Shutdown manager and close all db.
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StdFactory default connection manager.
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# Structs
BaseMapper 基础的ORM功能 1.
DB 数据库连接 对sqlx.DB的封装，提供更多的功能： 1.
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Tx transaction wrapper.
# Interfaces
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# Type aliases
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ExecFunc Exec 函数类型, 用于执行无返回值的SQL.
GetFunc Get 函数类型, 用于查询单条记录.
NamedExecFunc NamedExec 函数类型, 用于执行无返回值的SQL,使用命名参数.
NamedGetFunc NamedGet 函数类型, 用于查询单条记录,使用命名参数.
NamedSelectFunc NamedSelect 函数类型, 用于查询多条记录,使用命名参数.
SelectFunc Select 函数类型，使用位置参数.
TxFunc Tx 函数类型, 用于执行事务.