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java.lang.Object
java.rmi.MarshalledObject<T>
MarshalledObject
consists of a serialized object which is
marshalled according to the RMI specification.
An object passed to the constructor is serialized and tagged with the needed
URL to retrieve its class definition for remote usage. If the object is a
remote reference its stub is serialized instead. The instance of this
marshalled object can be later retrieved by its get()
method.
Constructor Summary | |
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Method Summary | |
boolean | |
T |
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int |
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Methods inherited from class java.lang.Object | |
clone , equals , extends Object> getClass , finalize , hashCode , notify , notifyAll , toString , wait , wait , wait |
public MarshalledObject(T obj) throws IOException
Constructs aMarshalledObject
from the given object.
- Parameters:
obj
- the object to marshal
- Throws:
IOException
- if an I/O error during serialization occurs.
public boolean equals(Object obj)
Checks if the given object is equal to this marshalled object.Marshalled objects are considered equal if they contain the same serialized object. Codebase annotations where the class definition can be downloaded are ignored in the equals test.
- Parameters:
obj
- the object to compare.
- Returns:
true
if equal,false
otherwise.
public T get() throws IOException, ClassNotFoundException
Constructs and returns a copy of the internal serialized object.
- Returns:
- The deserialized object.
- Throws:
IOException
- if an I/O exception occurs during deserialization.ClassNotFoundException
- if the class of the deserialized object cannot be found.
public int hashCode()
Get a value that represents this Object, as uniquely as possible within the confines of an int.There are some requirements on this method which subclasses must follow:
- Semantic equality implies identical hashcodes. In other words, if
a.equals(b)
is true, thena.hashCode() == b.hashCode()
must be as well. However, the reverse is not necessarily true, and two objects may have the same hashcode without being equal.- It must be consistent. Whichever value o.hashCode() returns on the first invocation must be the value returned on all later invocations as long as the object exists. Notice, however, that the result of hashCode may change between separate executions of a Virtual Machine, because it is not invoked on the same object.
Notice that since
hashCode
is used inHashtable
and other hashing classes, a poor implementation will degrade the performance of hashing (so don't blindly implement it as returning a constant!). Also, if calculating the hash is time-consuming, a class may consider caching the results.The default implementation returns
System.identityHashCode(this)
- Returns:
- the hash code for this Object