/*
* Copyright 2014 Red Hat, Inc. and/or its affiliates.
*
* 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.jbpm.kie.services.impl.form.provider;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.StringWriter;
import java.util.Map;
import freemarker.ext.beans.BeansWrapper;
import freemarker.template.Template;
public abstract class FreemakerFormProvider extends AbstractFormProvider {
protected String render(String name, InputStream src, Map<String, Object> renderContext) {
String str = null;
try {
freemarker.template.Configuration cfg = new freemarker.template.Configuration();
BeansWrapper defaultInstance = new BeansWrapper();
defaultInstance.setSimpleMapWrapper(true);
cfg.setObjectWrapper(defaultInstance);
cfg.setTemplateUpdateDelay(0);
Template temp = new Template(name, new InputStreamReader(src), cfg);
StringWriter out = new StringWriter();
temp.process(renderContext, out);
out.flush();
str = out.getBuffer().toString();
} catch (Exception e) {
throw new RuntimeException("Failed to process form template", e);
}
return str;
}
}