Class ConcretePrereqObject

code/src/java/pcgen/cdom/base/ConcretePrereqObject.java:40–261

A ConcretePrereqObject is an object that contains a list of Prerequisites. This list of Prerequisites is designed to serve as a list of conditions that must be met before the PrereqObject can be "used" ConcretePrereqObject is intended to provide a quick foundation class that implements PrereqObject

 * implements PrereqObject.
 */
public class ConcretePrereqObject implements Cloneable, PrereqObject
{
	/** The list of prerequisites */
	private Set<Prerequisite> thePrereqs = null;

	/**
	 * Returns a List of the Prerequisite objects contained in the PrereqObject.
	 * If the PrereqObject contains no Prerequisites, the return value may be
	 * null or an empty list, it is implementation-specific.
	 * 
	 * This method is value-semantic in that ownership of the returned List is
	 * transferred to the class calling this method. Modification of the
	 * returned List will not modify this ConcretePrereqObject and modification
	 * of this ConcretePrereqObject will not modify the returned List.
	 * 
	 * @return A List of Prerequisite objects contained in the PrereqObject.
	 */
	@Override
	public List<Prerequisite> getPrerequisiteList()
	{
		if (thePrereqs == null)
		{
			return Collections.emptyList();
		}
		return List.copyOf(thePrereqs);
	}

	/**
	 * Returns true if this object has any prerequisites of the kind that is
	 * passed in.
	 * 
	 * @param matchType
	 *            The kind of Prerequisite to test for.
	 * 
	 * @return <tt>true</tt> if this object has a prerequisite of the kind
	 *         that is passed in
	 * 
	 * @see pcgen.core.prereq.Prerequisite#getKind()
	 */
	public final boolean hasPreReqTypeOf(final String matchType)
	{
		if (!hasPrerequisites())
		{
			return false;
		}

		return getPrerequisiteList().stream()
		                            .anyMatch(prereq -> PrerequisiteUtilities.hasPreReqKindOf(prereq, matchType));
	}

	/**
	 * Clones this ConcretePrereqObject. This is not a "deep" clone, in that the
	 * List of Prerequisites is cloned (to allow Prerequisites to be
	 * added/removed without altering the original or the clone), but the
	 * Prerequisites contained within the ConcretePrereqObject are not cloned.
	 */
	@Override
	public ConcretePrereqObject clone() throws CloneNotSupportedException