/** * 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.filter; import java.io.Serializable; import java.util.Map; import org.bonitasoft.web.rest.server.datastore.converter.ValueConverter; import org.bonitasoft.web.rest.server.framework.exception.APIFilterMandatoryException; /** * @author Vincent Elcrin * */ public class FilterAccessor { private Map<String, String> filters; public FilterAccessor(Map<String, String> filters) { this.filters = filters; } /** * @throws APIFilterMandatoryException * if the value of the filter is null */ public String getMandatory(String filter) { ensureFilterValue(filter); return getFilters().get(filter); } /** * @throws APIFilterMandatoryException * In case of any exception during conversion */ public <S extends Serializable> S getMandatory(String filter, ValueConverter<S> converter) { String value = getMandatory(filter); try { return converter.convert(value); } catch (Exception e) { throw new APIFilterMandatoryException(filter, e); } } private Map<String, String> getFilters() { return filters; } private void ensureFilterValue(String filter) { if (getFilters() == null || !getFilters().containsKey(filter)) { throw new APIFilterMandatoryException(filter); } } }