Helfer VariantKey

Jan Burse, erstellt 26. Jul 2019
package jekpro.frequent.advanced;
import jekpro.tools.term.AbstractSkel;
import matula.util.data.SetEntry;
* <p>Provides a reference data type that acts as a variant key.</p>
* <p/>
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* otherwise agreed upon, XLOG Technologies GmbH makes no warranties
* regarding the provided information. XLOG Technologies GmbH assumes
* no liability that any problems might be solved with the information
* provided by XLOG Technologies GmbH.
* <p/>
* Rights & License
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* and patent rights in particular - are the sole property of XLOG
* Technologies GmbH. If the company was not the originator of some
* excerpts, XLOG Technologies GmbH has at least obtained the right to
* reproduce, change and translate the information.
* <p/>
* Reproduction is restricted to the whole unaltered document. Reproduction
* of the information is only allowed for non-commercial uses. Selling,
* giving away or letting of the execution of the library is prohibited.
* The library can be distributed as part of your applications and libraries
* for execution provided this comment remains unchanged.
* <p/>
* Restrictions
* Only to be distributed with programs that add significant and primary
* functionality to the library. Not to be distributed with additional
* software intended to replace any components of the library.
* <p/>
* Trademarks
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public final class VariantKey extends SetEntry
implements Comparable<VariantKey> {
* <p>Retrieve the hash code.</p>
* @return The hash code.
public int hashCode() {
return value.hashCode();
* <p>Check equals another variant key.</p>
* @param obj The other object.
* @return True of equals other object, otherwise false.
public boolean equals(Object obj) {
if (!(obj instanceof SetEntry))
return false;
return value.equals(((SetEntry)obj).value);
* <p>Compare this ref var to another ref var.</p>
* @param o The other ref var.
* @return <0 less, 0 equal, >0 greater
public int compareTo(VariantKey o) {
return AbstractSkel.compareSkel(value, o.value);