/*
* #!
* Ontopia Engine
* #-
* Copyright (C) 2001 - 2013 The Ontopia Project
* #-
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
* !#
*/
package net.ontopia.infoset.impl.basic;
import java.io.Serializable;
import net.ontopia.infoset.core.LocatorIF;
/**
* INTERNAL: The abstract locator class. All locator implementations should
* extend this class.
*/
@SuppressWarnings("serial")
public abstract class AbstractLocator implements LocatorIF, Serializable {
// -------------------------------------------------------------------------
// LocatorIF implementation
// -------------------------------------------------------------------------
/**
* PUBLIC: Two LocatorIFs are considered equal if they have the same
* address and notation properties.
*/
public boolean equals(Object object) {
try {
LocatorIF locator = (LocatorIF)object;
return getAddress().equals(locator.getAddress()) &&
getNotation().equalsIgnoreCase(locator.getNotation());
} catch (ClassCastException e) {
return false; // In case the object is not a locator
} catch (NullPointerException e) {
return false; // In case the object is null
}
}
/**
* PUBLIC: Returns the hashcode of the address property. All
* subclasses of AbstractLocator must use the same hashCode
* implementation in order to guarantee interoperability. E.g. when
* looking up LocatorIFs in Maps.
*/
public int hashCode() {
return getAddress().hashCode();
}
public String toString() {
return getNotation() + "|" + getAddress();
}
}