//   Copyright 2012 Georg-August-Universität Göttingen, Germany
//
//   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 de.ugoe.cs.autoquest.tasktrees.treeifc;

/**
 * <p>
 * Provides extended information about a specific task, such as statistics about task occurrences,
 * etc. It contains measures for different metrics determined for a task.
 * </p>
 * 
 * @author Patrick Harms
 */
public interface ITaskInfo {

    /**
     * <p>
     * returns the task to which these infos belong
     * </p>
     * 
     * @return as described
     */
    public ITask getTask();

    /**
     * <p>
     * returns all available measures
     * </p>
     * 
     * @return as described
     */
    public IMeasure[] getMeasures();

    /**
     * <p>
     * returns the value of the measure identified through the given metric
     * </p>
     *
     * @param metric the metric for which the value is to be returned
     * 
     * @return as described
     */
    public int getMeasureValue(TaskMetric metric);

    /**
     * <p>
     * returns the value of the measure identified through the given metric if the task is
     * observed in the given context, i.e. parent task. The result is Integer.MIN_VALUE if there
     * is no value for this measure in a context.
     * </p>
     *
     * @param metric  the metric for which the value is to be returned
     * @param context the context for which the measure value is to be returned
     * 
     * @return as described
     */
    public int getMeasureValue(TaskMetric metric, ITask context);

    /**
     * <p>
     * represents a measure for a specific metric
     * </p>
     * 
     * @author Patrick Harms
     */
    public interface IMeasure {
        
        /**
         * <p>
         * returns the metric of the measure
         * </p>
         * 
         * @return as described
         */
        public TaskMetric getMetric();
        
        /**
         * <p>
         * returns the value of the measure
         * </p>
         * 
         * @return as described
         */
        public int getValue();
        
        /**
         * <p>
         * returns the value of the measure if the task was observed in a specific context, i.e.
         * parent task
         * </p>
         * 
         * @return as described
         */
        public int getValue(ITask context);
        
    }

}