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Cristal-ise is a description-driven software platform originally developed to track the construction of the CMS ECAL detector of the LHC at CERN. This is its core library, known as the kernel, which manages business objects called Items. Items are entirely configured from data, called descriptions, held in other Items. Every change of a state in an Item is a consequence of an execution of an activity in that Item's lifecycle, meaning that Cristal-ise applications are completely traceable, even in their design. It also supports extensive versioning of Item description data, giving the system a high level of flexibility.

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/**
 * This file is part of the CRISTAL-iSE kernel.
 * Copyright (c) 2001-2015 The CRISTAL Consortium. All rights reserved.
 *
 * This library is free software; you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License as published
 * by the Free Software Foundation; either version 3 of the License, or (at
 * your option) any later version.
 *
 * This library is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; with out even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
 * License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this library; if not, write to the Free Software Foundation,
 * Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
 *
 * http://www.fsf.org/licensing/licenses/lgpl.html
 */
package org.cristalise.kernel.process.module;

import static org.cristalise.kernel.collection.BuiltInCollections.QUERY;
import static org.cristalise.kernel.collection.BuiltInCollections.SCHEMA;
import static org.cristalise.kernel.collection.BuiltInCollections.SCRIPT;
import static org.cristalise.kernel.collection.BuiltInCollections.STATE_MACHINE;
import lombok.Getter;
import lombok.Setter;

import org.cristalise.kernel.collection.BuiltInCollections;
import org.cristalise.kernel.collection.Collection;
import org.cristalise.kernel.collection.CollectionArrayList;
import org.cristalise.kernel.collection.CollectionMember;
import org.cristalise.kernel.common.CannotManageException;
import org.cristalise.kernel.common.InvalidDataException;
import org.cristalise.kernel.common.ObjectAlreadyExistsException;
import org.cristalise.kernel.common.ObjectCannotBeUpdated;
import org.cristalise.kernel.common.ObjectNotFoundException;
import org.cristalise.kernel.common.PersistencyException;
import org.cristalise.kernel.entity.proxy.ItemProxy;
import org.cristalise.kernel.lifecycle.ActivityDef;
import org.cristalise.kernel.lookup.AgentPath;
import org.cristalise.kernel.lookup.Path;
import org.cristalise.kernel.process.Bootstrap;
import org.cristalise.kernel.process.Gateway;
import org.cristalise.kernel.process.resource.BuiltInResources;
import org.cristalise.kernel.utils.LocalObjectLoader;
import org.cristalise.kernel.utils.Logger;

@Getter @Setter
public class ModuleActivity extends ModuleResource {

    ModuleDescRef script, schema, query, stateMachine;
    ActivityDef   actDef;

    public ModuleActivity() {
        super();
        type = BuiltInResources.ELEM_ACT_DESC_RESOURCE;
    }

    public ModuleActivity(ItemProxy child, Integer version) throws ObjectNotFoundException, InvalidDataException {
        this();
        this.version = version;

        script       = getDescRef(child, SCRIPT);
        schema       = getDescRef(child, SCHEMA);
        query        = getDescRef(child, QUERY);
        stateMachine = getDescRef(child, STATE_MACHINE);
    }

    public ModuleDescRef getDescRef(ItemProxy child, BuiltInCollections collection) throws ObjectNotFoundException, InvalidDataException {
        Collection coll = child.getCollection(collection.getName(), version);

        if (coll.size() == 1) throw new InvalidDataException("Too many members in " + collection + " collection in " + name);

        CollectionMember collMem = coll.getMembers().list.get(0);
        return new ModuleDescRef(null, collMem.getChildUUID(), Integer.valueOf(collMem.getProperties().get("Version").toString()));
    }

    @Override
    public Path create(AgentPath agentPath, boolean reset) 
            throws ObjectNotFoundException, ObjectCannotBeUpdated, CannotManageException, ObjectAlreadyExistsException, InvalidDataException
    {
        try {
            domainPath = Bootstrap.verifyResource(ns, name, version, type.getTypeCode(), itemPath, getResourceLocation(), reset);
            itemPath = domainPath.getItemPath();
        }
        catch (Exception e) {
            Logger.error(e);
            throw new CannotManageException("Exception verifying module resource " + ns + "/" + name);
        }

        actDef = LocalObjectLoader.getActDef(name, version);
        populateActivityDef();

        CollectionArrayList colls;

        try {
            colls = actDef.makeDescCollections();
        }
        catch (InvalidDataException e) {
            Logger.error(e);
            throw new CannotManageException("Could not create description collections for " + getName() + ".");
        }
        for (Collection coll : colls.list) {
            try {
                Gateway.getStorage().put(itemPath, coll, null);
                // create last collection
                coll.setVersion(null);
                Gateway.getStorage().put(itemPath, coll, null);
            }
            catch (PersistencyException e) {
                Logger.error(e);
                throw new CannotManageException("Persistency exception storing description collections for " + getName() + ".");
            }
        }

        return domainPath;
    }

    public void populateActivityDef() throws ObjectNotFoundException, CannotManageException {
        try {
            if (schema != null)
                actDef.setSchema(LocalObjectLoader.getSchema(schema.id == null ? schema.name : schema.id, Integer.valueOf(schema.version)));
        }
        catch (NumberFormatException | InvalidDataException e) {
            Logger.error(e);
            throw new CannotManageException("Schema definition in " + getName() + " not valid.");
        }

        try {
            if (script != null)
                actDef.setScript(LocalObjectLoader.getScript(script.id == null ? script.name : script.id, Integer.valueOf(script.version)));
        }
        catch (NumberFormatException | InvalidDataException e) {
            Logger.error(e);
            throw new CannotManageException("Script definition in " + getName() + " not valid.");
        }

        try {
            if (query != null)
                actDef.setQuery(LocalObjectLoader.getQuery(query.id == null ? query.name : query.id, Integer.valueOf(query.version)));
        }
        catch (NumberFormatException | InvalidDataException e) {
            Logger.error(e);
            throw new CannotManageException("Query definition in " + getName() + " not valid.");
        }

        try {
            if (stateMachine != null)
                actDef.setStateMachine(LocalObjectLoader.getStateMachine(stateMachine.id == null ? stateMachine.name : stateMachine.id,
                        Integer.valueOf(stateMachine.version)));
        }
        catch (NumberFormatException | InvalidDataException e) {
            Logger.error(e);
            throw new CannotManageException("State Machine definition in " + getName() + " not valid.");
        }
    }
}