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 * The contents of this file are subject to the terms of either the Universal Permissive License
 * v 1.0 as shown at http://oss.oracle.com/licenses/upl
 *
 * or the following license:
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 * provided that the following conditions are met:
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 * 1. Redistributions of source code must retain the above copyright notice, this list of conditions
 * and the following disclaimer.
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package org.openjdk.jmc.flightrecorder.configuration.internal;

import java.util.Map;

import org.openjdk.jmc.common.unit.IOptionDescriptor;
import org.openjdk.jmc.flightrecorder.configuration.OptionInfo;
import org.openjdk.jmc.flightrecorder.configuration.events.EventOptionID;
import org.openjdk.jmc.flightrecorder.configuration.events.IEventTypeID;

/**
 * Mapping function to return an {@link IOptionDescriptor} for all {@link EventOptionID option IDs}
 * formed by a specific class of {@link IEventTypeID event type ID} and a well-known option key.
 */
public class EventOptionDescriptorMapper implements IMapper<EventOptionID, IOptionDescriptor<?>> {
	private final Class<? extends IEventTypeID> typeClass;
	private final Map<String, IOptionDescriptor<?>> map;
	private final boolean allowOther;

	public EventOptionDescriptorMapper(Class<? extends IEventTypeID> typeClass, Map<String, IOptionDescriptor<?>> map,
			boolean allowOther) {
		this.map = map;
		this.typeClass = typeClass;
		this.allowOther = allowOther;
	}

	@Override
	public IOptionDescriptor<?> get(EventOptionID key) {
		if (typeClass.isInstance(key.getEventTypeID())) {
			IOptionDescriptor<?> desc = map.get(key.getOptionKey());
			return (allowOther || (desc != null)) ? desc : OptionInfo.DISALLOWED_OPTION;
		}
		return OptionInfo.DISALLOWED_OPTION;
	}
}
