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/**
 * Copyright 2005-2018 The Kuali Foundation
 *
 * Licensed under the Educational Community 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.opensource.org/licenses/ecl2.php
 *
 * 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 org.kuali.rice.kew.api.peopleflow;

import org.kuali.rice.core.api.mo.common.Identifiable;
import org.kuali.rice.core.api.mo.common.Versioned;
import org.kuali.rice.core.api.mo.common.active.Inactivatable;

import java.util.List;
import java.util.Map;

/**
 * Contract interface for a PeopleFlowDefinition.  A PeopleFlowDefinition is simply a collections of members and their (optional) delegates.
 * Each member of a PeopleFlowDefinition has a priority number assigned to it, which indicates the order in which members should
 * be processed during execution of the flow.
 *
 * Priority is ordered by the lowest priority number being the "beginning" of the flow.  It is possible for one or
 * more members to have the same priority number, in which case they should be processed in parallel.
 *
 * Members of a flow can be one of either a principal, group, or role which is defined by the
 * {@link PeopleFlowMemberContract}.
 *
 * @author Kuali Rice Team ([email protected])
 */
public interface PeopleFlowContract extends Identifiable, Inactivatable, Versioned {

    /**
     * @return the name for this {@link PeopleFlowContract}.  Will never be null.
     */
    String getName();

    /**
     * @return the namespace for this {@link PeopleFlowContract}.  Will never be null.
     */
    String getNamespaceCode();

    /**
     * @return the type id for this {@link PeopleFlowContract}.  Will never be null.
     */
    String getTypeId();

    /**
     * @return the name for this {@link PeopleFlowContract}.  May be null, but not empty.
     */
    String getDescription();

    /**
     * Returns the list of members for this flow, sorted from lowest to highest priority number.
     *
     * @return the {@link PeopleFlowMemberContract}s for this {@link PeopleFlowContract}. Will never return null.
     */
    List getMembers();

    /**
     * @return the attributes for this {@link PeopleFlowContract}. Will never return null.
     */
    Map getAttributes();

}