/*
 * Copyright 2010 Red Hat, Inc. and/or its affiliates.
 *
 * 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 org.kie.api.definition.process;

import java.util.Map;

/**
 * A connection is a link from one Node to another.
 */
public interface Connection {

    /**
     * The Node the connection starts from.
     */
    Node getFrom();

    /**
     * The Node the connection goes to.
     */
    Node getTo();

    /**
     * The type of exit point of the from Node.  Defaults to "DROOLS_DEFAULT".
     */
    String getFromType();

    /**
     * The type of entry point of the to Node.  Defaults to "DROOLS_DEFAULT".
     */
    String getToType();

    /**
     * Meta data associated with this connection.
     */
    Map<String, Object> getMetaData();

}
