DerivedSeriesFields.java

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package org.dcm4chee.archive.query;

import com.mysema.query.Tuple;
import com.mysema.query.types.Expression;
import org.dcm4chee.archive.conf.QueryParam;
import org.dcm4chee.storage.conf.Availability;

import java.util.Date;

/**
 * Calculates the derived fields for a Series.
 *
 * Created by Umberto Cappellini on 6/12/15.
 */
public interface DerivedSeriesFields {

    /**
     * returns the querydsl fields needed to calculate
     * the derived fields. Those fields will be available
     * in the Tuple object of addInstance
     */
    Expression<?>[] fields();

    /**
     * For each instance, the provided querydsl Tuple
     * provides the sets of queried fields necessary to
     * calculate derived fields. Partially calculated
     * fields are stored in the private properties of the
     * bean (note: bean is RequestScoped) and returned
     * by the relative getters. QueryParam is also passed,
     * to calculate fields based on config parameters.
     */
    void addInstance(Tuple result, QueryParam param);

    /**
     * @return number of instances of this Series
     */
    int getNumberOfInstances();

    /**
     * @return retrieve AETs associated to this Series
     */
    String[] getRetrieveAETs();

    /**
     * @return Series availability (ONLINE,NEARLINE,OFFLINE,UNAVAILABLE)
     */
    Availability getAvailability();

    /**
     * @return Last Update Time of the Series (proprietary field)
     */
    Date getLastUpdateTime();

    /**
     * @return number of visible images of this Series (proprietary field)
     */
    int getNumberOfVisibleImages();
}