```
@Target({TYPE,METHOD})
@Retention(RUNTIME)
@Documented
@Repeatable(ClientQueryParams.class)
public @interface ClientQueryParam
```
Used to specify a query that should be sent with the outbound request. When this annotation is placed at the interface level of a REST client interface, the specified header will be sent on each request for all methods in the interface. When this annotation is placed on a method, the parameter will be sent only for that method. If the same query parameter is specified in an annotation for both the type and the method, only the parameter value specified in the annotation on the method will be sent.
The value of the parameter to send can be specified explicitly by using the value attribute. The value can also be computed via a default method on the client interface or a public static method on a different class. The compute method must return a String or String[] (indicating a multivalued header) value. This method must be specified in the value attribute but wrapped in curly-braces. The compute method's signature must either contain no arguments or a single String argument. The String argument is the name of the header.
Here is an example that explicitly defines a header value and computes a value:
```
 public interface MyClient {

    static AtomicInteger counter = new AtomicInteger(1);

    default String determineQueryValue(String name) {
        if ("SomeHeader".equals(name)) {
            return "InvokedCount " + counter.getAndIncrement();
        }
        throw new UnsupportedOperationException("unknown name");
    }

    @ClientQueryParam(name="SomeName", value="ExplicitlyDefinedValue")
    @GET
    Response useExplicitQueryValue();

    @ClientQueryParam(name="SomeName", value="{determineQueryValue}")
    @DELETE
    Response useComputedQueryValue();
 }
 
```
The implementation should fail to deploy a client interface if the annotation contains a @ClientQueryParam annotation with a value attribute that references a method that does not exist, or contains an invalid signature.
The required attribute will determine what action the implementation should take if the method specified in the value attribute throws an exception. If the attribute is true (default), then the implementation will abort the request and will throw the exception back to the caller. If the required attribute is set to false, then the implementation will not send this header if the method throws an exception.
Note that if an interface method contains an argument annotated with @QueryParam, that argument will take priority over anything specified in a @ClientQueryParam annotation.

- Required Element Summary
  
  Required Elements
  Modifier and Type Required Element Description
  
  String name
  
  String[] value
- Optional Element Summary
  
  Optional Elements
  Modifier and Type Optional Element Description
  
  boolean required

- Element Detail
  - name
```
String name
```
    Returns:
    
    the name of the query param.
- - value
```
String[] value
```
    Returns:
    
    the value(s) of the param - or the method to invoke to get the value (surrounded by curly braces).
- - required
```
boolean required
```
    Returns:
    
    whether to abort the request if the method to compute the query value throws an exception (true; default) or just skip this header (false)
    
    Default:
    
    true

Required Elements
Modifier and Type	Required Element	Description
`String`	`name`
`String[]`	`value`

Annotation Type ClientQueryParam

Required Element Summary

Optional Element Summary

Element Detail

name

value

required