CompositeType class is the open type class
whose instances describe the types of CompositeData
values.
CompositeType instance, checking for the validity of the given parameters.
The validity constraints are described below for each parameter.
Note that the contents of the three array parameters
itemNames, itemDescriptions and itemTypes
are internally copied so that any subsequent modification of these arrays by the caller of this constructor
has no impact on the constructed CompositeType instance.
The Java class name of composite data values this composite type represents
(ie the class name returned by the getClassName
method)
is set to the string value returned by CompositeData.class.getName().
ALLOWED_CLASSNAMES = {
"java.lang.Void",
"java.lang.Boolean",
"java.lang.Character",
"java.lang.Byte",
"java.lang.Short",
"java.lang.Integer",
"java.lang.Long",
"java.lang.Float",
"java.lang.Double",
"java.lang.String",
"java.math.BigDecimal",
"java.math.BigInteger",
"java.util.Date",
"javax.management.ObjectName",
CompositeData.class.getName(),
TabularData.class.getName() } ;
true if this CompositeType instance defines an item
whose name is itemName.obj parameter with this CompositeType instance for equality.
Two CompositeType instances are equal if and only if all of the following statements are true:
java.lang.Class.
For example, a 3-dimensional array of Strings has for class name
"[[[Ljava.lang.String;" (without the quotes).OpenType instance.null if this CompositeType instance does not define any item
whose name is itemName.null if this CompositeType instance does not define any item
whose name is itemName.OpenType instance.CompositeType instance.
The hash code of a CompositeType instance is the sum of the hash codes
of all elements of information used in equals comparisons
(ie: name, items names, items types).
This ensures that t1.equals(t2) implies that t1.hashCode()==t2.hashCode()
for any two CompositeType instances t1 and t2,
as required by the general contract of the method
Object.hashCode()
.
As CompositeType instances are immutable, the hash code for this instance is calculated once,
on the first call to hashCode, and then the same value is returned for subsequent calls.
true if the open data values this open
type describes are arrays, false otherwise.CompositeType instance.
If obj is null or is not an instance of javax.management.openmbean.CompositeData,
isValue returns false.
If obj is an instance of javax.management.openmbean.CompositeData,
its composite type is tested for equality with this CompositeType instance, and isValue
returns true if and only if equals
returns true.
CompositeType instance.
The set's iterator will return the item names in ascending order.wait methods.
The awakened thread will not be able to proceed until the current thread relinquishes the lock on this object. The awakened thread will compete in the usual manner with any other threads that might be actively competing to synchronize on this object; for example, the awakened thread enjoys no reliable privilege or disadvantage in being the next thread to lock this object.
This method should only be called by a thread that is the owner of this object's monitor. A thread becomes the owner of the object's monitor in one of three ways:
synchronized statement
that synchronizes on the object.
Class, by executing a
synchronized static method of that class.
Only one thread at a time can own an object's monitor.
wait methods.
The awakened threads will not be able to proceed until the current thread relinquishes the lock on this object. The awakened threads will compete in the usual manner with any other threads that might be actively competing to synchronize on this object; for example, the awakened threads enjoy no reliable privilege or disadvantage in being the next thread to lock this object.
This method should only be called by a thread that is the owner
of this object's monitor. See the notify method for a
description of the ways in which a thread can become the owner of
a monitor.
CompositeType instance.
The string representation consists of
the name of this class (ie javax.management.openmbean.CompositeType), the type name for this instance,
and the list of the items names and types string representation of this instance.
As CompositeType instances are immutable, the string representation for this instance is calculated once,
on the first call to toString, and then the same value is returned for subsequent calls.
The current thread must own this object's monitor. The thread
releases ownership of this monitor and waits until another thread
notifies threads waiting on this object's monitor to wake up
either through a call to the notify method or the
notifyAll method. The thread then waits until it can
re-obtain ownership of the monitor and resumes execution.
As in the one argument version, interrupts and spurious wakeups are possible, and this method should always be used in a loop:
synchronized (obj) {
while (<condition does not hold>)
obj.wait();
... // Perform action appropriate to condition
}
This method should only be called by a thread that is the owner
of this object's monitor. See the notify method for a
description of the ways in which a thread can become the owner of
a monitor.The current thread must own this object's monitor.
This method causes the current thread (call it T) to place itself in the wait set for this object and then to relinquish any and all synchronization claims on this object. Thread T becomes disabled for thread scheduling purposes and lies dormant until one of four things happens:
A thread can also wake up without being notified, interrupted, or timing out, a so-called spurious wakeup. While this will rarely occur in practice, applications must guard against it by testing for the condition that should have caused the thread to be awakened, and continuing to wait if the condition is not satisfied. In other words, waits should always occur in loops, like this one:
synchronized (obj) {
while (<condition does not hold>)
obj.wait(timeout);
... // Perform action appropriate to condition
}
(For more information on this topic, see Section 3.2.3 in Doug Lea's
"Concurrent Programming in Java (Second Edition)" (Addison-Wesley,
2000), or Item 50 in Joshua Bloch's "Effective Java Programming
Language Guide" (Addison-Wesley, 2001).
If the current thread is interrupted by another thread while it is waiting, then an InterruptedException is thrown. This exception is not thrown until the lock status of this object has been restored as described above.
Note that the wait method, as it places the current thread into the wait set for this object, unlocks only this object; any other objects on which the current thread may be synchronized remain locked while the thread waits.
This method should only be called by a thread that is the owner
of this object's monitor. See the notify method for a
description of the ways in which a thread can become the owner of
a monitor.
This method is similar to the wait method of one
argument, but it allows finer control over the amount of time to
wait for a notification before giving up. The amount of real time,
measured in nanoseconds, is given by:
1000000*timeout+nanos
In all other respects, this method does the same thing as the method of one argument. In particular, wait(0, 0) means the same thing as wait(0).
The current thread must own this object's monitor. The thread releases ownership of this monitor and waits until either of the following two conditions has occurred:
notify method
or the notifyAll method.
timeout
milliseconds plus nanos nanoseconds arguments, has
elapsed.
The thread then waits until it can re-obtain ownership of the monitor and resumes execution.
As in the one argument version, interrupts and spurious wakeups are possible, and this method should always be used in a loop:
synchronized (obj) {
while (<condition does not hold>)
obj.wait(timeout, nanos);
... // Perform action appropriate to condition
}
This method should only be called by a thread that is the owner
of this object's monitor. See the notify method for a
description of the ways in which a thread can become the owner of
a monitor.