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/*
* Copyright (c) 1996, 2003, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
package com.sun.corba.se.impl.naming.cosnaming;
import org.omg.CosNaming.NameComponent;
/**
* Class InternalBindingKey implements the necessary wrapper code
* around the org.omg.CosNaming::NameComponent class to implement the proper
* equals() method and the hashCode() method for use in a hash table.
* It computes the hashCode once and stores it, and also precomputes
* the lengths of the id and kind strings for faster comparison.
*/
public class InternalBindingKey
{
// A key contains a name
public NameComponent name;
private int idLen;
private int kindLen;
private int hashVal;
// Default Constructor
public InternalBindingKey() {}
// Normal constructor
public InternalBindingKey(NameComponent n)
{
idLen = 0;
kindLen = 0;
setup(n);
}
// Setup the object
protected void setup(NameComponent n) {
this.name = n;
// Precompute lengths and values since they will not change
if( this.name.id != null ) {
idLen = this.name.id.length();
}
if( this.name.kind != null ) {
kindLen = this.name.kind.length();
}
hashVal = 0;
if (idLen > 0)
hashVal += this.name.id.hashCode();
if (kindLen > 0)
hashVal += this.name.kind.hashCode();
}
// Compare the keys by comparing name's id and kind
public boolean equals(java.lang.Object o) {
if (o == null)
return false;
if (o instanceof InternalBindingKey) {
InternalBindingKey that = (InternalBindingKey)o;
// Both lengths must match
if (this.idLen != that.idLen || this.kindLen != that.kindLen) {
return false;
}
// If id is set is must be equal
if (this.idLen > 0 && this.name.id.equals(that.name.id) == false) {
return false;
}
// If kind is set it must be equal
if (this.kindLen > 0 && this.name.kind.equals(that.name.kind) == false) {
return false;
}
// Must be the same
return true;
} else {
return false;
}
}
// Return precomputed value
public int hashCode() {
return this.hashVal;
}
}
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