/**
 * Copyright (C) 2012 BonitaSoft S.A.
 * BonitaSoft, 32 rue Gustave Eiffel - 38000 Grenoble
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 2.0 of the License, or
 * (at your option) any later version.
 * 
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with this program. If not, see <http://www.gnu.org/licenses/>.
 */
package org.bonitasoft.web.rest.server.datastore;

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

import org.bonitasoft.web.rest.server.framework.api.Datastore;
import org.bonitasoft.web.rest.server.framework.api.DatastoreHasAdd;
import org.bonitasoft.web.rest.server.framework.api.DatastoreHasDelete;
import org.bonitasoft.web.rest.server.framework.api.DatastoreHasGet;
import org.bonitasoft.web.rest.server.framework.api.DatastoreHasSearch;
import org.bonitasoft.web.rest.server.framework.api.DatastoreHasUpdate;
import org.bonitasoft.web.rest.server.framework.search.ItemSearchResult;
import org.bonitasoft.web.toolkit.client.common.exception.api.APIMethodNotAllowedException;
import org.bonitasoft.web.toolkit.client.data.APIID;
import org.bonitasoft.web.toolkit.client.data.item.IItem;

/**
 * @author Vincent Elcrin
 * 
 */
public class ComposedDatastore<T extends IItem> extends Datastore
        implements
        DatastoreHasGet<T>,
        DatastoreHasSearch<T>,
        DatastoreHasAdd<T>,
        DatastoreHasUpdate<T>,
        DatastoreHasDelete {

    private DatastoreHasGet<T> getHelper;

    private DatastoreHasSearch<T> searchHelper;

    private DatastoreHasUpdate<T> updateHelper;

    private DatastoreHasAdd<T> addHelper;

    private DatastoreHasDelete deleteHelper;

    @Override
    public T get(APIID id) {
        if (getHelper != null) {
            return getHelper.get(id);
        }
        throw new APIMethodNotAllowedException("GET method not allowed.");
    }

    @Override
    public ItemSearchResult<T> search(int page, int resultsByPage, String search, String orders, Map<String, String> filters) {
        if (searchHelper != null) {
            return searchHelper.search(page, resultsByPage, search, orders, filters);
        }
        throw new APIMethodNotAllowedException("SEARCH method not allowed.");
    }

    @Override
    public T add(T item) {
        if (addHelper != null) {
            return addHelper.add(item);
        }
        throw new APIMethodNotAllowedException("ADD method not allowed.");
    }

    @Override
    public T update(APIID id, Map<String, String> attributes) {
        if (updateHelper != null) {
            return updateHelper.update(id, attributes);
        }
        throw new APIMethodNotAllowedException("UPDATE method not allowed.");
    }

    @Override
    public void delete(List<APIID> ids) {
        if (deleteHelper != null) {
            deleteHelper.delete(ids);
        } else {
            throw new APIMethodNotAllowedException("DELETE method not allowed.");
        }
    }

    public void setGetHelper(DatastoreHasGet<T> getHelper) {
        this.getHelper = getHelper;
    }

    public void setSearchHelper(DatastoreHasSearch<T> searchHelper) {
        this.searchHelper = searchHelper;
    }

    public void setAddHelper(DatastoreHasAdd<T> addHelper) {
        this.addHelper = addHelper;
    }

    public void setUpdateHelper(DatastoreHasUpdate<T> updateHelper) {
        this.updateHelper = updateHelper;
    }

    public void setDeleteHelper(DatastoreHasDelete deleteHelper) {
        this.deleteHelper = deleteHelper;
    }
}