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blueeon/php-logical-dsl
=======================

A simple DSL for WHEN and THEN

731PHP

Since Jul 15Pushed 8y ago4 watchersCompare

[ Source](https://github.com/blueeon/php-logical-dsl)[ Packagist](https://packagist.org/packages/blueeon/php-logical-dsl)[ RSS](/packages/blueeon-php-logical-dsl/feed)WikiDiscussions master Synced 1mo ago

READMEChangelog (1)DependenciesVersions (2)Used By (0)

php-logical-dsl
===============

[](#php-logical-dsl)

A simple DSL for WHEN and THEN

Installation
------------

[](#installation)

```
composer require blueeon/php-logical-dsl

```

Packgist Page
-------------

[](#packgist-page)

Try it!
-------

[](#try-it)

Features
--------

[](#features)

Syntax Definition
-----------------

[](#syntax-definition)

### Prototype

[](#prototype)

```
/**
 *
 *Test rules
 */
rule_name{
    WHEN  req.order.order_from = 11 AND req.order.stock_channel NOT IN( 'cn-order') AND req.order.price >= 1000
    THEN
        (res.mihome = 100 AND res.price = 100 AND WEIGHT=30),
        (res.mihome = 112 AND res.price = 100 AND WEIGHT=70)
    PRIORITY = 1
}
rule_name{
    WHEN  req.order.order_from = 11 AND req.order.stock_channel NOT IN( 'cn-order') AND req.order.price >= 1000
    THEN
        (res.mihome = 100 AND res.price = 100 AND WEIGHT=30),
        (res.mihome = 112 AND res.price = 100 AND WEIGHT=70)
    PRIORITY = 2
}
[RULE NAME]{
    WHEN        [[Condition]...]
    THEN        [[Result]...]
    PRIORITY =  [priority]
}
...

```

### Example

[](#example)

#### 1. simple

[](#1-simple)

```
/**
 * 一个简单例子
 */

rule1{
    when    req.order.order_type = 10
    THEN    res.price = 110
}
rule2{
    WHEN    req.order.order_type = 11
    THEN    res.price = 500
}

```

#### 2. With PRIORITY

[](#2-with-priority)

```
/**
 * 一个带权重的简单例子
 */
rule1{
    when    req.order.order_type = 10
    THEN    res.price = 110
    PRIORITY = 1
}
rule2{
    WHEN    req.order.order_type = 10 AND req.order.order_from = 12
    THEN    res.price = 500
    PRIORITY = 100
}

```

#### 3. Multiple result

[](#3-multiple-result)

```
/**
 * 随机按比例返回结果
 */
rule1{
    when    req.order.order_type = 10
    THEN    (res.express = 110 AND WEIGHT = 10),
            (res.express = 120 AND WEIGHT = 90)
}
rule2{
    WHEN    req.order.order_type = 11
    THEN    (res.express = 114 AND WEIGHT = 10),
            (res.express = 118 AND WEIGHT = 90)
}

```

#### 4. Complex example

[](#4-complex-example)

```
/**
 * 带权重,多返回值,复杂判断逻辑
 */
rule1{
    WHEN    req.order.order_type = 10
    AND(
            req.order.stock_channel  NOT IN ('cn-tmall')
            OR  req.order.price >= 1000
            AND req.order.order_from IN(1,2,3,12)
    )
    THEN
        (res.mihome = 100 AND res.price = 110 AND WEIGHT=30),
        (res.express = 14  AND res.mihome = 112 AND res.price = 1200 AND WEIGHT=70)
    PRIORITY = 1
}
rule2{
    WHEN    req.order.order_from = 12
            AND req.order.stock_channel IN( 'cn-order')
            AND req.order.price >= 1000
    THEN    res.mihome = 100 AND res.price = 1000
    PRIORITY = 10
}

```

#### 5. Return a function and execute it

[](#5-return-a-function-and-execute-it)

```
/**
 * 返回一个方法,并且执行这个方法,如果找不到这个方法,则抛一个异常,仅支持静态方法,且需完整的可访问到的命名空间
 */

rule1{
    when    req.order.order_type = 10
    THEN    res.mihome = 100 AND res.mihome = PHPLogicalDSLTests\data\CommonFunction::getMihome(100)
}
rule2{
    WHEN    req.order.order_type = 11
    THEN    res.mihome = 112 AND res.mihome = PHPLogicalDSLTests\data\CommonFunction::getMihome(112)
}

```

Supported Operator
------------------

[](#supported-operator)

Operatornamecn\_nameremark`*`multiply乘`/`divide除`%`mod取余`+`plus加`-`minus减`>`gt大于`=`Greater than or equal to大于等于`