view flys-artifacts/src/main/java/de/intevation/flys/artifacts/transitions/DefaultTransition.java @ 4655:cd44d28d0fbc

Move the access to artifact data to the Access object Use BedHeightAccess class to receive the data from the artifact. This abstracts the data access from the actual artifact.
author Björn Ricks <bjoern.ricks@intevation.de>
date Tue, 11 Dec 2012 09:44:04 +0100
parents b2ea89a665bc
children
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package de.intevation.flys.artifacts.transitions;

import org.w3c.dom.Node;

import de.intevation.artifacts.Artifact;

import de.intevation.artifactdatabase.state.State;
import de.intevation.artifactdatabase.transition.Transition;


/**
 * The default implementation of a <code>Transition</code>.
 *
 * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a>
 */
public class DefaultTransition implements Transition {

    /** The ID of the current state */
    protected String from;

    /** The ID of the target state */
    protected String to;


    /**
     * The default constructor.
     */
    public DefaultTransition() {
    }


    /**
     * The default constructor.
     *
     * @param from The current state.
     * @param to The target state.
     */
    public DefaultTransition(String from, String to) {
        this.from = from;
        this.to   = to;
    }


    public void init(Node config) {
        // nothing to do in the default transition
    }


    /**
     * Returns the current state ID.
     *
     * @return the current state ID.
     */
    public String getFrom() {
        return from;
    }


    /**
     * Returns the target state ID.
     *
     * @return the target state ID.
     */
    public String getTo() {
        return to;
    }


    /**
     * Set the current state ID.
     *
     * @param from current state ID.
     */
    public void setFrom(String from) {
        this.from = from;
    }


    /**
     * Set the target state ID.
     *
     * @param to the target state ID.
     */
    public void setTo(String to) {
        this.to = to;
    }


    /**
     * Determines if its valid to step from state <i>a</i> of an artifact
     * <i>artifact</i> to state <i>b</i>. This method always returns true - no
     * validation takes place.
     *
     * @param artifact The owner artifact of state a and b.
     * @param a The current state.
     * @param b The target state.
     *
     * @return true, if it is valid to step from a to b, otherwise false.
     */
    public boolean isValid(Artifact artifact, State a, State b) {
        return true;
    }
}
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