taverna-workbench-activity-palette-api/src/main/java/net/sf/taverna/t2/servicedescriptions/IdentifiedObject.java

package net.sf.taverna.t2.servicedescriptions;

import java.util.List;

import net.sf.taverna.t2.lang.beans.PropertyAnnotated;

public abstract class IdentifiedObject extends PropertyAnnotated {
	@Override
	public boolean equals(Object obj) {
		if (!(obj instanceof IdentifiedObject))
			return false;
		List<? extends Object> myIdentifyingData = getIdentifyingData();
		if (myIdentifyingData == null)
			return super.equals(obj);
		if (!getClass().isInstance(obj) && obj.getClass().isInstance(this))
			return false;
		IdentifiedObject id = (IdentifiedObject) obj;
		return myIdentifyingData.equals(id.getIdentifyingData());
	}

	@Override
	public int hashCode() {
		List<? extends Object> identifyingData = getIdentifyingData();
		if (identifyingData == null)
			return super.hashCode();
		return identifyingData.hashCode();
	}

	protected abstract List<? extends Object> getIdentifyingData();
}