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Clazz
Class jq_MemberReference  view jq_MemberReference download jq_MemberReference.java

java.lang.Object
  extended byClazz.jq_MemberReference

public final class jq_MemberReference
extends java.lang.Object

Objects of this class represent unresolved references to class members.

Version:
$Id: jq_MemberReference.java,v 1.5 2003/05/12 10:05:12 joewhaley Exp $

Field Summary
private  jq_Class clazz
           
private  jq_NameAndDesc nd
           
 
Constructor Summary
jq_MemberReference(jq_Class clazz, jq_NameAndDesc nd)
          Creates new member reference to the named member in the given class.
 
Method Summary
 boolean equals(jq_MemberReference that)
           
 boolean equals(java.lang.Object o)
          Determine whether this Object is semantically equal to another Object.
 UTF.Utf8 getDesc()
          Returns the descriptor of the referenced member.
 UTF.Utf8 getName()
          Returns the name of the referenced member.
 jq_NameAndDesc getNameAndDesc()
          Returns the name and descriptor of the referenced member.
 jq_Class getReferencedClass()
          Returns the class of the referenced member.
 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

clazz

private jq_Class clazz

nd

private jq_NameAndDesc nd
Constructor Detail

jq_MemberReference

public jq_MemberReference(jq_Class clazz,
                          jq_NameAndDesc nd)
Creates new member reference to the named member in the given class.

Method Detail

getReferencedClass

public final jq_Class getReferencedClass()
Returns the class of the referenced member.


getNameAndDesc

public final jq_NameAndDesc getNameAndDesc()
Returns the name and descriptor of the referenced member.


getName

public final UTF.Utf8 getName()
Returns the name of the referenced member.


getDesc

public final UTF.Utf8 getDesc()
Returns the descriptor of the referenced member.


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.


equals

public boolean equals(jq_MemberReference that)

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)


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()).