GroovyElementVisitor.java
/*
* Copyright (C) 2003-2013 eXo Platform SAS.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 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 Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package org.exoplatform.commons.notification.template;
import groovy.lang.Writable;
import groovy.text.Template;
import java.io.StringWriter;
import java.io.Writer;
import org.exoplatform.commons.api.notification.channel.AbstractChannel;
import org.exoplatform.commons.api.notification.channel.ChannelManager;
import org.exoplatform.commons.api.notification.channel.template.AbstractTemplateBuilder;
import org.exoplatform.commons.api.notification.model.PluginKey;
import org.exoplatform.commons.api.notification.plugin.AbstractNotificationChildPlugin;
import org.exoplatform.commons.api.notification.plugin.AbstractNotificationPlugin;
import org.exoplatform.commons.api.notification.plugin.BaseNotificationPlugin;
import org.exoplatform.commons.api.notification.service.setting.PluginContainer;
import org.exoplatform.commons.api.notification.service.template.TemplateContext;
import org.exoplatform.commons.api.notification.template.Element;
import org.exoplatform.commons.api.notification.template.ElementVisitor;
import org.exoplatform.commons.utils.CommonsUtils;
import org.exoplatform.services.log.ExoLogger;
import org.exoplatform.services.log.Log;
/**
* Created by The eXo Platform SAS
* Author : eXoPlatform
* thanhvc@exoplatform.com
* Aug 8, 2013
*/
public class GroovyElementVisitor implements ElementVisitor {
private static final Log LOG = ExoLogger.getLogger(GroovyElementVisitor.class);
private final Writer writer;
private TemplateContext ctx;
public GroovyElementVisitor() {
writer = new StringWriter();
}
@Override
public ElementVisitor visit(Element element) {
this.ctx.put("_ctx", element);
//
try {
Template engine = null;
PluginKey pluginKey = new PluginKey(ctx.getPluginId());
BaseNotificationPlugin plugin = CommonsUtils.getService(PluginContainer.class).getPlugin(pluginKey);
if (plugin instanceof AbstractNotificationChildPlugin) {
engine = ((AbstractNotificationChildPlugin) plugin).getTemplateEngine();
} else if (plugin.isOldPlugin()) {
engine = ((AbstractNotificationPlugin) plugin).getTemplateEngine();
} else {
AbstractChannel channel = CommonsUtils.getService(ChannelManager.class).getChannel(ctx.getChannelKey());
AbstractTemplateBuilder builder = channel.getTemplateBuilder(pluginKey);
if (builder != null) {
engine = builder.getTemplateEngine();
}
}
if (engine != null) {
Writable writable = engine.make(getTemplateContext());
writable.writeTo(writer);
}
} catch (Exception e) {
ctx.setException(e);
LOG.error("Failed at visit().", e);
}
return this;
}
@Override
public String out() {
return writer.toString();
}
@Override
public TemplateContext getTemplateContext() {
return this.ctx;
}
@Override
public ElementVisitor with(TemplateContext ctx) {
this.ctx = ctx;
return this;
}
@Override
public Writer getWriter() {
return this.writer;
}
}