Plus.php

left = $left;

$this->right = $right;

}

/**

* 返回兩種規(guī)格的邏輯與評(píng)估

*

* @param Item $item

*

* @return bool

*/

public function isSatisfiedBy(Item $item)

{

return $this->left->isSatisfiedBy($item) && $this->right->isSatisfiedBy($item);

}

}

Either.php

left = $left;

$this->right = $right;

}

/**

* 返回兩種規(guī)格的邏輯或評(píng)估

*

* @param Item $item

*

* @return bool

*/

public function isSatisfiedBy(Item $item)

{

return $this->left->isSatisfiedBy($item) || $this->right->isSatisfiedBy($item);

}

}

Not.php

spec = $spec;

}

/**

* 返回規(guī)格的相反結(jié)果

*

* @param Item $item

*

* @return bool

*/

public function isSatisfiedBy(Item $item)

{

return !$this->spec->isSatisfiedBy($item);

}

}

PriceSpecification.php

maxPrice = $maxPrice;

}

/**

* 設(shè)置最小值

*

* @param int $minPrice

*/

public function setMinPrice($minPrice)

{

$this->minPrice = $minPrice;

}

/**

* 判斷給定Item的定價(jià)是否在最小值和最大值之間

*

* @param Item $item

*

* @return bool

*/

public function isSatisfiedBy(Item $item)

{

if (!empty($this->maxPrice) && $item->getPrice() > $this->maxPrice) {

return false;

}

if (!empty($this->minPrice) && $item->getPrice() < $this->minPrice) {

return false;

}

return true;

}

}

4、測(cè)試代碼

Tests/SpecificationTest.php

assertTrue($spec->isSatisfiedBy($item));

$spec->setMaxPrice(50);

$this->assertFalse($spec->isSatisfiedBy($item));

$spec->setMaxPrice(150);

$this->assertTrue($spec->isSatisfiedBy($item));

$spec->setMinPrice(101);

$this->assertFalse($spec->isSatisfiedBy($item));

$spec->setMinPrice(100);

$this->assertTrue($spec->isSatisfiedBy($item));

}

public function testNotSpecification()

{

$item = new Item(100);

$spec = new PriceSpecification();

$not = $spec->not();

$this->assertFalse($not->isSatisfiedBy($item));

$spec->setMaxPrice(50);

$this->assertTrue($not->isSatisfiedBy($item));

$spec->setMaxPrice(150);

$this->assertFalse($not->isSatisfiedBy($item));

$spec->setMinPrice(101);

$this->assertTrue($not->isSatisfiedBy($item));

$spec->setMinPrice(100);

$this->assertFalse($not->isSatisfiedBy($item));

}

public function testPlusSpecification()

{

$spec1 = new PriceSpecification();

$spec2 = new PriceSpecification();

$plus = $spec1->plus($spec2);

$item = new Item(100);

$this->assertTrue($plus->isSatisfiedBy($item));

$spec1->setMaxPrice(150);

$spec2->setMinPrice(50);

$this->assertTrue($plus->isSatisfiedBy($item));

$spec1->setMaxPrice(150);

$spec2->setMinPrice(101);

$this->assertFalse($plus->isSatisfiedBy($item));

$spec1->setMaxPrice(99);

$spec2->setMinPrice(50);

$this->assertFalse($plus->isSatisfiedBy($item));

}

public function testEitherSpecification()

{

$spec1 = new PriceSpecification();

$spec2 = new PriceSpecification();

$either = $spec1->either($spec2);

$item = new Item(100);

$this->assertTrue($either->isSatisfiedBy($item));

$spec1->setMaxPrice(150);

$spec2->setMaxPrice(150);

$this->assertTrue($either->isSatisfiedBy($item));

$spec1->setMaxPrice(150);

$spec2->setMaxPrice(0);

$this->assertTrue($either->isSatisfiedBy($item));

$spec1->setMaxPrice(0);

$spec2->setMaxPrice(150);

$this->assertTrue($either->isSatisfiedBy($item));

$spec1->setMaxPrice(99);

$spec2->setMaxPrice(99);

$this->assertFalse($either->isSatisfiedBy($item));

}

}

以上內(nèi)容是小編給大家分享的PHP 設(shè)計(jì)模式系列之 specification規(guī)格模式，希望本文分享能夠幫助大家。

本文原創(chuàng)發(fā)布php中文網(wǎng)，轉(zhuǎn)載請(qǐng)注明出處，感謝您的尊重！

總結(jié)

以上是生活随笔為你收集整理的php 规格,PHP 设计模式系列之 specification规格模式_PHP的全部?jī)?nèi)容，希望文章能夠幫你解決所遇到的問(wèn)題。

如果覺(jué)得生活随笔網(wǎng)站內(nèi)容還不錯(cuò)，歡迎將生活随笔推薦給好友。