MatrixParam (Java EE 6 )

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SUMMARY: REQUIRED | OPTIONAL

DETAIL: ELEMENT

javax.ws.rs
Annotation Type MatrixParam

@Target(value={PARAMETER,METHOD,FIELD}) @Retention(value=RUNTIME) public @interface MatrixParam

Binds the value(s) of a URI matrix parameter to a resource method parameter, resource class field, or resource class bean property. Values are URL decoded unless this is disabled using the Encoded annotation. A default value can be specified using the DefaultValue annotation. The type T of the annotated parameter, field or property must either:

Be a primitive type
Have a constructor that accepts a single String argument
Have a static method named valueOf or fromString that accepts a single String argument (see, for example, Integer.valueOf(String))
Be List<T>, Set<T> or SortedSet<T>, where T satisfies 2 or 3 above. The resulting collection is read-only.

If the type is not one of those listed in 4 above then the first value (lexically) of the parameter is used.

Because injection occurs at object creation time, use of this annotation on resource class fields and bean properties is only supported for the default per-request resource class lifecycle. Resource classes using other lifecycles should only use this annotation on resource method parameters.

See Also:: DefaultValue, Encoded, Matrix URIs

Required Element Summary
`java.lang.String`	`value` Defines the name of the URI matrix parameter whose value will be used to initialize the value of the annotated method argument, class field or bean property.

Element Detail

value

public abstract java.lang.String value

Defines the name of the URI matrix parameter whose value will be used to initialize the value of the annotated method argument, class field or bean property. The name is specified in decoded form, any percent encoded literals within the value will not be decoded and will instead be treated as literal text. E.g. if the parameter name is "a b" then the value of the annotation is "a b", not "a+b" or "a%20b".