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com.fetish.directory
Class SearchID  

java.lang.Object
  com.fetish.directory.SearchID

All Implemented Interfaces:

SearchIDInterface, java.io.Serializable

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public class SearchID

extends java.lang.Object

implements SearchIDInterface, java.io.Serializable

Unique identifier for lookup operations.
This class allows the lookup process to traverse a (potentially) cyclic graph of FADA nodes without entering infinite loops.
Each searched FADA node is marked with the SearchID for the search process, so when the next search request comes, its SearchID is checked against all marks. If there is a match, the search is not performed. A given search process looks up in a node at most once.

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Field Summary
private  long	seqNum
private  long	sidh
private  long	sidl

 

Constructor Summary

SearchID()

SearchID(ServiceID id, long seqNum)           Creates a new SearchID. The SearchID consts of the FADA node Jini ServiceID (unique worldwide until 3400 AD) and a sequence number (as many searches can start from the same FADA node).

 

Method Summary
boolean	equals(java.lang.Object o)           Determine whether this Object is semantically equal to another Object.
int	hashCode()           Get a value that represents this Object, as uniquely as possible within the confines of an int.
java.lang.String	toString()           Convert this Object to a human-readable String.

 

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

 

Field Detail

sidh

private long sidh

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sidl

private long sidl

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seqNum

private long seqNum

Constructor Detail

SearchID

public SearchID()

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SearchID

public SearchID(ServiceID id,
                long seqNum)

Creates a new SearchID.
The SearchID consts of the FADA node Jini ServiceID (unique worldwide until 3400 AD) and a sequence number (as many searches can start from the same FADA node).

Method Detail

equals

public boolean equals(java.lang.Object o)

Description copied from class: java.lang.Object

Determine whether this Object is semantically equal to another Object.

There are some fairly strict requirements on this method which subclasses must follow:

• It must be transitive. If a.equals(b) and b.equals(c), then a.equals(c) must be true as well.
• It must be symmetric. a.equals(b) and b.equals(a) must have the same value.
• It must be reflexive. a.equals(a) must always be true.
• It must be consistent. Whichever value a.equals(b) returns on the first invocation must be the value returned on all later invocations.
• a.equals(null) must be false.
• It must be consistent with hashCode(). That is, a.equals(b) must imply a.hashCode() == b.hashCode(). The reverse is not true; two objects that are not equal may have the same hashcode, but that has the potential to harm hashing performance.

This is typically overridden to throw a java.lang.ClassCastException if the argument is not comparable to the class performing the comparison, but that is not a requirement. It is legal for a.equals(b) to be true even though a.getClass() != b.getClass(). Also, it is typical to never cause a java.lang.NullPointerException.

In general, the Collections API (java.util) use the equals method rather than the == operator to compare objects. However, java.util.IdentityHashMap is an exception to this rule, for its own good reasons.

The default implementation returns this == o.

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toString

public java.lang.String toString()

Description copied from class: java.lang.Object

Convert this Object to a human-readable String. There are no limits placed on how long this String should be or what it should contain. We suggest you make it as intuitive as possible to be able to place it into System.out.println() 55 and such.

It is typical, but not required, to ensure that this method never completes abruptly with a java.lang.RuntimeException.

This method will be called when performing string concatenation with this object. If the result is null, string concatenation will instead use "null".

The default implementation returns getClass().getName() + "@" + Integer.toHexString(hashCode()).

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hashCode

public int hashCode()

Description copied from class: java.lang.Object

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, then a.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 in java.util.Hashtable 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)

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