/**
* Copyright 2011 ArcBees Inc.
*
* 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 com.gwtplatform.samples.hplace.server;
import com.gwtplatform.dispatch.server.ExecutionContext;
import com.gwtplatform.dispatch.server.actionhandler.ActionHandler;
import com.gwtplatform.dispatch.shared.ActionException;
import com.gwtplatform.samples.hplace.shared.GetProductAction;
import com.gwtplatform.samples.hplace.shared.GetProductResult;
import com.gwtplatform.samples.hplace.shared.Product;
import com.google.inject.Inject;
/**
* @author Philippe Beaudoin
*/
public class GetProductHandler implements
ActionHandler<GetProductAction, GetProductResult> {
private final ProductDatabase database;
@Inject
public GetProductHandler(ProductDatabase database) {
this.database = database;
}
@Override
public GetProductResult execute(final GetProductAction action,
final ExecutionContext context) throws ActionException {
Product product = database.get(action.getId());
if (product == null) {
throw new ActionException("Product not found");
}
return new GetProductResult(product);
}
@Override
public Class<GetProductAction> getActionType() {
return GetProductAction.class;
}
@Override
public void undo(final GetProductAction action, final GetProductResult result,
final ExecutionContext context) throws ActionException {
// No undo
}
}