/**** query Builder translated by PHP siege Http://blog.csdn.net/phpgcs preparing query Builder preparation Qu ery Builder Building Data retrieval Queries build up a search query building and data manipulation Queries to build a database operation query building
Schema manipulation queries constructs a data structure operation query ****/Yii Query
I. Builder (BUILDER) model
The builder model separates the internal representation of a product from the product generation process, enabling a build process to generate a product object with a different internal representation.
Construction of Object Nature
In some cases, an object will have some important properties that cannot be used as a complete product
Copy CodeThe code is as follows:
/**
* Builders ' model
*
* Separate the build of a complex object from its representation, and use the same build process to create different representations
*/
Class Product
{
public $_type = null;
public $_size = null;
public $_color = null;
Public Function SetType ($type)
{
echo "Set product type$this->_type = $type;
}
Public Function setSize ($size)
{
echo "Set product size$this->_size = $size;
}
Public Function SetColor ($color)
{
echo "Set product color$
to set
*/
public void Setsubject (String subject)
{
this. Subject = subject;
}
/**
* @return The body
*/
Public String GetBody ()
{
return to body;
}
/**
* @param body to set
*/
public void Setbody (String body)
{
this. Body = body;
}
/**
* @return the From
*/
Public String Getfrom ()
{
return from;
}
/**
* @param from-to set
*/
public void Setfrom (String from)
{
this. From = from;
}
/**
* @return The Senddate
*/
Public Date getsenddate ()
{
return senddate;
}
/**
* @param senddate the s
About Builder mode details: http://blog.csdn.net/jjwwmlp456/article/details/39890699Let's start with a picture.There are still a lot of places where you can see the Builder mode used in Android.The use of the following is approximate:NotificationNotification. Builder (context). Build (); Alertdialog.builder (context). Create ();You can also create multiple prope
If we need to build a house, and we don't know how to build a house, we will find someone else to help us build a house.
Step 1:
Create a new House class House with the property of the House. Let's find the House builder interface HouseBuilder. If we want to build a bungalow, we will find PingFangHouseBuilder, which inherits from HouseBuilder, there are various methods to build a house, such as floor makeFloor and wall makeWall.
Step 2:
It's not enoug
Queries Builder (query Builder)
1. New data
You can insert one/more data by using the Insert method of the Query Builder:
Db::table (' users ')->insert ([
[' ID ' =>1, ' name ' => ' laravel ', ' email ' => ' laravel@test.com ', ' password ' => ' 123 '],
[' ID ' =>2, ' name ' => ' Academy ', ' email ' => ' academy@test.com ', ' password ' => ' 123 '],
[' ID '
The
intention is to separate the construction of a complex object from its representation so that the same build process can create different representations.
Applicability
When creating complex objects, the algorithm should be independent of the parts of the object and how they are assembled.
When the construction process must allow the constructed object to have different representations. Understanding The builder model is primarily to separa
The factory class pattern provides the pattern of creating a single class, while the builder pattern is to centralize the various products to manage, to create composite objects, so-called composite objects that refer to a class that has different properties, in fact the builder pattern is the combination of the previous abstract factory pattern and the last Test. Let's look at the code:As before, a sender
The builder mode also belongs to the creation mode.
As the name suggests, a builder is the person who implements a product (Building). After a series of unified operations, they can complete a work and what kind of product is inseparable from the builder. For example, the old Li family now has a land that can be used for building land. It can be used to build a s
: This article mainly introduces the PHP design mode-builder mode builder. if you are interested in the PHP Tutorial, refer to it. The builder mode is a complex
ObjectIs separated from its representation, so that different representations can be created during the same build process. it focuses on building a complex
Object.
class product{protected $_type = '';p
Directory
Directory
Related knowledge points
Generator
The execution process of the builder Fab
The difference between a generator and an iterator
Benefits of the generator
Enhanced generator Features
Builder expression
Example of generator expression model
Summary
Related knowledge pointsPython Advanced _ Iterator List parsi
"@" and then the function name, the symbol "@" and the number of bytes of the parameter are followed. For example, the modifier of the int func (int A, double B) function is @ func @ 12. For the "C ++" function, it is different.In the future, compilers may use different registers to store parameters.
Functions declared in DLL using _ declspec (dllexport:_ Declspec (dllexport) only indicates that this function is a DLL export function, and _ stdcall is a function call convention, and there shoul
Design Pattern-Builder pattern and design pattern builder
Separates a complex build from its representation so that different representations can be created during the same build process.
-- Design Pattern GOF
In the ASP. NET environment, Insus. NET lists a Builder design pattern (Builder) example, which is closest to
AbstractIf the DSP Builder is installed in MATLAB, after the DSP Builder is removed in a day, as long as the MATLAB is moved together, there will be negative information. How can this problem be solved?
IntroductionEnvironment: MATLAB r200b
Previously, I installed DSP Builder 7.2 and 8.0, but after Quartus II 8.1, I didn't install DSP
Examples of basic usage of JS builder mode and js builder Mode
This example describes the basic usage of the JS builder mode. Share it with you for your reference. The specific implementation method is as follows:
Function getBeerById (id, callback) {_ request ('get', 'url' + id, function (res) {callback (res. responseText)}) ;}; function getBeerByIdBridge () {
---restore content starts---List Builder for in range ()print(a)# Results [1, 2, 3, 4, 5, 6, 7, 8, 9, ten]Above is a list builderInsufficient: Not applicable for more data because it takes up too much memoryGeneratorWith list generation, we can create a list directly. However, with memory limitations, the list capacity is certainly limited. Also, creating a list of 1 million elements takes up a lot of storage space, and if we just need to access the
Defined in Gof:"Separating a complex build process from its object representation allows the same build process to produce different object behavior." ”The builder model can be divided into two steps to implement:1. Separate the complex build process and divide the entire process into several steps, each of which can be either a functional component setting or a parameter designation, and in a build method, these steps are strung together.2. Define a
Let's review the basic concepts of design patterns:definitionthe construction of a complex object is separated from its representation, allowing the same build process to create different representations.Builders Hide how the product is assembled, so if you need to change the internal representation of a product, you just need to redefine a builder.Practical Range1. When creating complex objects, the algorithms should be independent of the components of the object and the way they are assembled.
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