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This article mainly introduces the relevant knowledge of "what points to pay attention to when using web combination mode". The editor shows you the operation process through an actual case, the operation method is simple and fast, and it is practical. I hope this article "what points to pay attention to when using web combination mode" can help you solve the problem.

Effect.

The content of the combination mode includes two points: one is to provide a standard way to access and manage the subordinate node, and the other is that the operation against the parent node can be recursively spread to its subordinate node or subordinate node. All its effects are derived from this feature.

Using the combination pattern, you can easily construct a tree data structure.

Using the combined mode, you can enable users to use any node on the tree structure from the same point of view, whether this node makes the leaf node, the parent node, or even the grandfather node the same.

The child nodes in the composite pattern are base class types, which allow the composition of the child nodes of an object to be dynamically changed to achieve new functions.

After serialization using the data structure of the combined schema, new data types can be stored without changing the serialization code.

Realize

When actually using composite patterns, there are a few points to keep in mind:

The interface about Component because the Component interface is a common feature of all nodes on the tree data structure, this interface needs to be maintained very carefully. It is particularly important to be careful not to change to all nodes for the sake of local requirements.

The Component or Composite data structure is actually the designer's static view of the processing object, which will change with the change of requirements and the deepening of the design. For composite patterns, an important divergence point is whether a node is Component or Composite. If the software is not released, the impact of such a change will not be great; if the product is already on the market and customers have used the product to generate their own data files, this change will be troublesome. Given the changes that may occur in the future, it may be a compromise point to merge the functions of Composite into Component in the first place.

This is the end of the content about "what to pay attention to when using the web composition pattern". Thank you for reading. If you want to know more about the industry, you can follow the industry information channel. The editor will update different knowledge points for you every day.

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