| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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.apache.sling.scripting.thymeleaf.internal; |
| |
| import java.io.Reader; |
| import java.io.Writer; |
| import java.util.Locale; |
| |
| import javax.script.Bindings; |
| import javax.script.ScriptContext; |
| import javax.script.ScriptException; |
| import javax.servlet.ServletContext; |
| |
| import org.apache.sling.api.SlingHttpServletRequest; |
| import org.apache.sling.api.SlingHttpServletResponse; |
| import org.apache.sling.api.scripting.SlingBindings; |
| import org.apache.sling.api.scripting.SlingScriptHelper; |
| import org.apache.sling.scripting.api.AbstractSlingScriptEngine; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| import org.thymeleaf.context.IContext; |
| import org.thymeleaf.context.WebContext; |
| |
| public final class ThymeleafScriptEngine extends AbstractSlingScriptEngine { |
| |
| private final ThymeleafScriptEngineFactory thymeleafScriptEngineFactory; |
| |
| private final Logger logger = LoggerFactory.getLogger(ThymeleafScriptEngine.class); |
| |
| public ThymeleafScriptEngine(final ThymeleafScriptEngineFactory thymeleafScriptEngineFactory) { |
| super(thymeleafScriptEngineFactory); |
| this.thymeleafScriptEngineFactory = thymeleafScriptEngineFactory; |
| } |
| |
| @Override |
| public Object eval(final Reader reader, final ScriptContext scriptContext) throws ScriptException { |
| final Bindings bindings = scriptContext.getBindings(ScriptContext.ENGINE_SCOPE); |
| final SlingScriptHelper helper = (SlingScriptHelper) bindings.get(SlingBindings.SLING); |
| |
| if (helper == null) { |
| throw new ScriptException("SlingScriptHelper missing from bindings"); |
| } |
| |
| final SlingHttpServletRequest request = helper.getRequest(); |
| final SlingHttpServletResponse response = helper.getResponse(); |
| final ServletContext servletContext = thymeleafScriptEngineFactory.getSlingServletContext(); |
| final Locale locale = helper.getResponse().getLocale(); |
| final String scriptName = helper.getScript().getScriptResource().getPath(); |
| final Writer writer = scriptContext.getWriter(); |
| |
| try { |
| final IContext context = new WebContext(request, response, servletContext, locale, bindings); |
| thymeleafScriptEngineFactory.getTemplateEngine().process(scriptName, context, writer); |
| } catch (Exception e) { |
| logger.error("Failure rendering Thymeleaf template '{}': {}", scriptName, e.getMessage()); |
| throw new ScriptException(e); |
| } |
| |
| return null; |
| } |
| |
| } |