001/**
002 * Copyright 2005-2016 The Kuali Foundation
003 *
004 * Licensed under the Educational Community License, Version 2.0 (the "License");
005 * you may not use this file except in compliance with the License.
006 * You may obtain a copy of the License at
007 *
008 * http://www.opensource.org/licenses/ecl2.php
009 *
010 * Unless required by applicable law or agreed to in writing, software
011 * distributed under the License is distributed on an "AS IS" BASIS,
012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 * See the License for the specific language governing permissions and
014 * limitations under the License.
015 */
016package org.kuali.rice.kns.web.struts.config;
017
018import org.apache.commons.lang.StringUtils;
019import org.apache.struts.config.ControllerConfig;
020import org.kuali.rice.coreservice.framework.CoreFrameworkServiceLocator;
021import org.kuali.rice.krad.util.KRADConstants;
022
023/**
024 * Kuali customization of ControllerConfig which delegates max upload size lookup to
025 * parameter service: KRADConstants.KNS_NAMESPACE, KRADConstants.DetailTypes.ALL_DETAIL_TYPE, KRADConstants.MAX_UPLOAD_SIZE_PARM_NM
026 * The value must be a string compatible with Struts maxFileSize attribute.
027 */
028public class KualiControllerConfig extends ControllerConfigWrapper {
029    public KualiControllerConfig(ControllerConfig config) {
030        super(config);
031    }
032
033    /**
034     * Returns the global max file upload size, which is dynamically derived from the Rice parameter service.
035     * This technically breaks the implicit contract in ControllerConfig that the config is frozen after startup.
036     * @return the global max file upload size
037     */
038    @Override
039    public String getMaxFileSize() {
040        String maxFileSize = CoreFrameworkServiceLocator.getParameterService().getParameterValueAsString(KRADConstants.KNS_NAMESPACE, KRADConstants.DetailTypes.ALL_DETAIL_TYPE, KRADConstants.MAX_UPLOAD_SIZE_PARM_NM);
041        if (StringUtils.isNotBlank(maxFileSize)) {
042            return maxFileSize;
043        }
044        return super.getMaxFileSize();
045    }
046
047    /**
048     * Overridden to throw an UnsupportedOperationException.  Once our KualiControllerConfig is
049     * in place, it does not make sense to support this setter.
050     */
051    @Override
052    public void setMaxFileSize(String s) {
053        throw new UnsupportedOperationException("Cannot set max file size through KualiControllerConfig");
054    }
055}