This class servers as an enclosing collection to bundle dependencies. It is used by BundleDependencyInformation to represent possibly multiple bundle dependencies for a given bundle identifier.
The class contains multiple BundleDependency instances in an ordered Set meaning that there are no duplicate dependencies, and the order remains the same between serialization and deserialization.
Use create(
public static final BundleDependencyList | Singleton instance contanining no dependencies. |
public | For Externalizable. |
public static BundleDependencyList | create( Creates a new dependency list with the argument bundle dependencies. |
public boolean | Indicates whether some other object is "equal to" this one. |
public BundleDependencyList | filter( Creates a new dependency list by filtering the dependencies in this instance. |
public NavigableSet< | Gets all the dependency kinds which are present in any of the enclosed bundle dependency. |
public Set< | Gets the bundle dependencies enclosed in this dependency list. |
public boolean | Checks if there are any optional dependencies in this instance. |
public int | hashCode() Returns a hash code value for the object. |
public boolean | isEmpty() Checks if this dependency list contains any dependencies. |
public void | The object implements the readExternal method to restore its
contents by calling the methods of DataInput for primitive
types and readObject for objects, strings and arrays. |
public String | toString() Returns a string representation of the object. |
public BundleDependencyList | Gets a dependency list that contains all the dependencies as this , but doesn't contain any
optional dependencies. |
public void | The object implements the writeExternal method to save its contents
by calling the methods of DataOutput for its primitive values or
calling the writeObject method of ObjectOutput for objects, strings,
and arrays. |
null
.
The equals
method implements an equivalence relation on non-null object references:
- It is reflexive: for any non-null reference value
x
,x.equals(x)
should returntrue
. - It is symmetric: for any non-null reference values
x
andy
,x.equals(y)
should returntrue
if and only ify.equals(x)
returnstrue
. - It is transitive: for any non-null reference values
x
,y
, andz
, ifx.equals(y)
returnstrue
andy.equals(z)
returnstrue
, thenx.equals(z)
should returntrue
. - It is consistent: for any non-null reference values
x
andy
, multiple invocations ofx.equals(y)
consistently returntrue
or consistently returnfalse
, provided no information used inequals
comparisons on the objects is modified. - For any non-null reference value
x
,x.equals(null)
should returnfalse
.
The equals
method for class Object
implements the most discriminating possible equivalence
relation on objects; that is, for any non-null reference values x
and y
, this method returns
true
if and only if x
and y
refer to the same object (x == y
has the value
true
).
Note that it is generally necessary to override the hashCode
method whenever this method is overridden,
so as to maintain the general contract for the hashCode
method, which states that equal objects must have
equal hash codes.
true
if this object is the same as the obj argument; false
otherwise.this
instance.
The dependencies in this
will be enumerated and the transformation function will be applied to it.
If it returns null
, it will be omitted.
This function can be used to transform the dependency list by filtering the dependencies in a custom manner.
null
, and this
is not
empty.
This method returns an empty list if and only if isEmpty() is true
.
The general contract of hashCode
is:
- Whenever it is invoked on the same object more than once during an execution of a Java application, the
hashCode
method must consistently return the same integer, provided no information used inequals
comparisons on the object is modified. This integer need not remain consistent from one execution of an application to another execution of the same application. - If two objects are equal according to the
equals(Object)
method, then calling thehashCode
method on each of the two objects must produce the same integer result. - It is not required that if two objects are unequal according to the
Object.equals(
Object) method, then calling thehashCode
method on each of the two objects must produce distinct integer results. However, the programmer should be aware that producing distinct integer results for unequal objects may improve the performance of hash tables.
As much as is reasonably practical, the hashCode method defined by class Object
does return distinct
integers for distinct objects. (This is typically implemented by converting the internal address of the object
into an integer, but this implementation technique is not required by the Java™ programming language.)
true
if there is at least one BundleDependency present in this instance.toString
method returns a string that
"textually represents" this object. The result should be a concise but informative representation that is easy
for a person to read. It is recommended that all subclasses override this method.
The toString
method for class Object
returns a string consisting of the name of the class of
which the object is an instance, the at-sign character `@
', and the unsigned hexadecimal representation
of the hash code of the object. In other words, this method returns a string equal to the value of:
getClass().getName() + '@' + Integer.toHexString(hashCode())
this
, but doesn't contain any
optional dependencies.
If this
instance contains no optionals, this
is returned, without constructing a new
instance.
this
instance.