org.romaframework.core.flow.Controller.java Source code

Introduction

Here is the source code for org.romaframework.core.flow.Controller.java

Source

/*
 * Copyright 2006 Luca Garulli (luca.garulli--at--assetdata.it)
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.romaframework.core.flow;

import java.lang.reflect.InvocationTargetException;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.romaframework.aspect.i18n.I18NAspect;
import org.romaframework.aspect.validation.MultiValidationException;
import org.romaframework.core.exception.UserException;
import org.romaframework.core.schema.SchemaAction;
import org.romaframework.core.util.ListenerManager;

public class Controller extends ListenerManager<Class<?>> {

    private static Log log = LogFactory.getLog(Controller.class);
    private static final Controller INSTANCE = new Controller();

    private static final String ERROR_LABEL = ".error";

    protected Controller() {
    }

    public void executeAction(Object iContent, SchemaAction iAction) throws Throwable {
        if (iContent == null || iAction == null) {
            return;
        }

        if (log.isDebugEnabled()) {
            log.debug("[Controller.executeAction] Executing action: " + iAction + " on object "
                    + iContent.toString() + "...");
        }

        try {
            iAction.invoke(iContent);
        } catch (InvocationTargetException ex) {
            Throwable nestedExc = ex.getTargetException();
            if (nestedExc == null
                    || !(nestedExc instanceof UserException) && !(nestedExc instanceof MultiValidationException)) {

                String errorLabel = I18NAspect.VARNAME_PREFIX + iAction.getName() + ERROR_LABEL;

                log.warn("[Controller.executeAction] error on execution of method: " + iAction.getName(),
                        nestedExc);

                // WRAP THE EXCEPTION IN A NEW USER EXCEPTION TAKING THE ACTION
                // NAME
                throw new UserException(iContent, errorLabel, nestedExc);
            }
            // THROW THE NESTED EXCEPTION (BYPASS THE REFLECTION)
            throw nestedExc;
        }
    }

    public static Controller getInstance() {
        return INSTANCE;
    }
}