com.github.javarch.jsf.mbeans.AbstractUpdateManagedBean.java Source code

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Here is the source code for com.github.javarch.jsf.mbeans.AbstractUpdateManagedBean.java

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/*
* Copyright 2011 the original author or authors.
*
* 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.github.javarch.jsf.mbeans;

import com.github.javarch.persistence.Persistable;
import com.github.javarch.support.log.Logger;
import com.github.javarch.support.log.LoggerFactory;
import com.google.common.base.Optional;
import com.google.common.base.Preconditions;

public abstract class AbstractUpdateManagedBean<T extends Persistable<?>> extends AbstractFormManagedBean<T> {

    private static final long serialVersionUID = 7222941430765228865L;

    private static final Logger LOG = LoggerFactory.getLogger(AbstractUpdateManagedBean.class);

    /**
     * Carrega o uma entidade "Entidade" baseada id. Utilizado inicialmente no <f:event> aps 
     * capturar o id no f:viewParam
     * @return
     */
    @SuppressWarnings("all")
    public String loadAfterSetViewParamId() {
        LOG.debug("calling loadAfterSetViewParamId on object {}", entity);
        if (!entity.isNew()) {

            T entityLoaded = (T) repository.findOne(getGenericType(), entity.getId());

            if (!Optional.of(entityLoaded).isPresent()) {
                LOG.debug("Entity with {} not found in database. Invoking handleEntityNotFound()", entity);
                handleEntityNotFound();
            }

            LOG.debug("Entity {} found. Validating entity with isValidUseEntity()", entityLoaded);

            if (!isValidUseEntity(entityLoaded)) {
                handleInvalidEntity(entityLoaded);
            }

            setEntity(entityLoaded);
        }

        return "";
    }

    protected void handleEntityNotFound() {
        LOG.error("Default impl of handleEntityNotFound. No action will be performed.");
    }

    protected boolean isValidUseEntity(T entityLoaded) {
        return true;
    }

    private void handleInvalidEntity(T entityLoaded) {
        LOG.error("Default impl of handleInvalidEntity. No action will be performed..", entity);
    }

    @Override
    public void onAction(T entidade) {
        Preconditions.checkState(entidade.getId() != null);
        repository.saveOrUpdate(entidade);
    }
}