view flys-artifacts/src/main/java/de/intevation/flys/artifacts/AbstractStaticStateArtifact.java @ 4255:670e98f5a441

Fixed leak while merging facets. The ThemeList that is used by OutputHelper to sort the Facets for an Output now uses a list to store the ManagedFacets. The correct order is made up by sorting the List using Collections.sort() function of the Java JDK. Therfore, the ManagedFacet class implements the Comparable interface. The return value of its compareTo(other) method depends on the value of the 'position' field.
author Ingo Weinzierl <weinzierl.ingo@googlemail.com>
date Thu, 25 Oct 2012 14:01:46 +0200
parents 79878efbdf07
children
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package de.intevation.flys.artifacts;

import java.util.ArrayList;
import java.util.Collection;
import java.util.List;

import org.apache.log4j.Logger;

import org.w3c.dom.Document;
import org.w3c.dom.Element;

import de.intevation.artifacts.CallContext;
import de.intevation.artifacts.ArtifactNamespaceContext;

import de.intevation.artifacts.common.utils.XMLUtils;
import de.intevation.artifacts.common.utils.XMLUtils.ElementCreator;

import de.intevation.artifactdatabase.ProtocolUtils;
import de.intevation.artifactdatabase.data.StateData;
import de.intevation.artifactdatabase.state.State;

import de.intevation.flys.artifacts.states.StaticState;

/**
 * A abstract baseclass for Artifacts which are using only one static state.
 *
 * This class is intended to be used without the config/stateengine to generate
 * the static state.
 *
 * @author <a href="mailto:bjoern.ricks@intevation.de">Björn Ricks</a>
 */
public abstract class AbstractStaticStateArtifact extends StaticFLYSArtifact {

    private transient StaticState staticstate;

    private static final Logger logger =
        Logger.getLogger(AbstractStaticStateArtifact.class);

    /**
     * Get a list containing the one and only State.
     * @param  context ignored.
     * @return list with one and only state.
     */
    @Override
    protected List<State> getStates(Object context) {
        ArrayList<State> states = new ArrayList<State>();
        states.add(getStaticState());
        return states;
    }


    /**
     * Get the "current" state.
     * @param cc ignored.
     * @return always the set static state.
     */
    @Override
    public State getCurrentState(Object cc) {
        return getStaticState();
    }

    /**
     * A child class must override this method to set its static state
     */
    protected abstract void initStaticState();

    protected void setStaticState(StaticState state) {
        this.staticstate = state;
    }

    protected StaticState getStaticState() {
        if (staticstate == null) {
            initStaticState();
        }
        return staticstate;
    }

    /**
     * Get the state.
     * @param context ignored.
     * @param stateID ignored.
     * @return the state.
     */
    @Override
    protected State getState(Object context, String stateID) {
        return getStaticState();
    }

    @Override
    public Document describe(Document data, CallContext cc) {
        logger.debug("Describe artifact: " + identifier());

        Document desc = XMLUtils.newDocument();

        ElementCreator creator = new ElementCreator(
            desc,
            ArtifactNamespaceContext.NAMESPACE_URI,
            ArtifactNamespaceContext.NAMESPACE_PREFIX);

        Element root = ProtocolUtils.createRootNode(creator);
        desc.appendChild(root);

        Element name = ProtocolUtils.createArtNode(
            creator, "name",
            new String[] { "value" },
            new String[] { getName() });

        root.appendChild(name);
        root.appendChild(createOutputModes(cc, desc, creator));

        ProtocolUtils.appendDescribeHeader(creator, root, identifier(), hash());

        // Add the data to an anonymous state.
        Collection<StateData> datas = getAllData();
        if (datas.size() > 0) {
            Element ui = creator.create("ui");
            Element staticE = creator.create("static");

            StaticState current = getStaticState();
            Element state = current.describeStatic(this, desc, root, cc, null);
            staticE.appendChild(state);

            for (StateData dataItem : datas) {
                Element itemelent = creator.create("data");
                creator.addAttr(itemelent, "name", dataItem.getName(), true);
                creator.addAttr(itemelent, "type", dataItem.getType(), true);
                state.appendChild(itemelent);
                Element valuement = creator.create("item");
                creator.addAttr(valuement, "label", dataItem.getDescription(), true);
                creator.addAttr(valuement, "value", dataItem.getValue().toString(), true);
                itemelent.appendChild(valuement);
            }

            ui.appendChild(staticE);
            root.appendChild(ui);
        }

        return desc;
    }
}

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