| layout | title | folder | permalink | pumlid | categories | tags | |||
|---|---|---|---|---|---|---|---|---|---|
pattern |
Proxy |
proxy |
/patterns/proxy/ |
9SR13OCm30NGLM00udktCS62eCI9x6yesrEfx_Jcehd69c5rEe3X7oBZE-q5HwpXOhahH95oRrHgt0msEldYPHClkow30J5rQko_qB3-VKYG_qjXBOrezGK0 |
Structural |
|
Surrogate
Provide a surrogate or placeholder for another object to control access to it.
Proxy is applicable whenever there is a need for a more versatile or sophisticated reference to an object than a simple pointer. Here are several common situations in which the Proxy pattern is applicable
- Remote proxy provides a local representative for an object in a different address space.
- Virtual proxy creates expensive objects on demand.
- Protection proxy controls access to the original object. Protection proxies are useful when objects should have different access rights.
- Control access to another object
- Lazy initialization
- Implement logging
- Facilitate network connection
- Count references to an object
- java.lang.reflect.Proxy
- Apache Commons Proxy
- Mocking frameworks Mockito, Powermock, EasyMock