net.sf.jasperreports.web.util.RequirejsTemplateConfigContributor Maven / Gradle / Ivy
/*
* JasperReports - Free Java Reporting Library.
* Copyright (C) 2001 - 2014 TIBCO Software Inc. All rights reserved.
* http://www.jaspersoft.com
*
* Unless you have purchased a commercial license agreement from Jaspersoft,
* the following license terms apply:
*
* This program is part of JasperReports.
*
* JasperReports is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* JasperReports 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 Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with JasperReports. If not, see .
*/
package net.sf.jasperreports.web.util;
import java.io.IOException;
import java.io.StringReader;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;
import java.util.Map.Entry;
import net.sf.jasperreports.engine.JRRuntimeException;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import com.fasterxml.jackson.core.JsonParseException;
import com.fasterxml.jackson.databind.JsonMappingException;
import com.fasterxml.jackson.databind.JsonNode;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.node.ObjectNode;
/**
* @author Lucian Chirita ([email protected])
*/
public class RequirejsTemplateConfigContributor implements RequirejsConfigContributor
{
private static final Log log = LogFactory.getLog(RequirejsTemplateConfigContributor.class);
private String templateName;
private Map paths;
private Map resourcePaths;
public RequirejsTemplateConfigContributor()
{
paths = new HashMap();
resourcePaths = new HashMap();
}
@Override
public void contribute(WebRequestContext context, ObjectNode config)
{
Map templateMap = new HashMap();
RequirejsTemplateConfigContext templateContext = new RequirejsTemplateConfigContext(context, paths, resourcePaths);
templateMap.put("context", templateContext);
String configString = VelocityUtil.processTemplate(templateName, templateMap);
if (log.isTraceEnabled())
{
log.trace("template " + templateName + " config:\n" + configString);
}
ObjectNode templateConfig = parseTemplateConfig(configString);
mergeObject(config, templateConfig);
}
protected ObjectNode parseTemplateConfig(String configString)
{
ObjectMapper objectMapper = new ObjectMapper();//FIXME reuse RequirejsConfigCreator.objectMapper
try
{
ObjectNode templateConfig = objectMapper.readValue(new StringReader(configString), ObjectNode.class);
return templateConfig;
}
catch (JsonParseException e)
{
throw new JRRuntimeException(e);
}
catch (JsonMappingException e)
{
throw new JRRuntimeException(e);
}
catch (IOException e)
{
throw new JRRuntimeException(e);
}
}
//FIXME move to a util class
protected void mergeObject(ObjectNode dest, ObjectNode source)
{
for(Iterator> it = source.fields(); it.hasNext();)
{
Entry fieldEntry = it.next();
String field = fieldEntry.getKey();
JsonNode sourceValue = fieldEntry.getValue();
JsonNode destValue = dest.get(field);
// only recursively merging if both dest and source fields are objects
// otherwise we overwrite the field, not appending arrays for now
if (sourceValue instanceof ObjectNode && destValue instanceof ObjectNode)
{
mergeObject((ObjectNode) destValue, (ObjectNode) sourceValue);
}
else
{
dest.put(field, sourceValue);
}
}
}
public String getTemplateName()
{
return templateName;
}
public void setTemplateName(String templateName)
{
this.templateName = templateName;
}
public void addPath(String key, String path)
{
paths.put(key, path);
}
public void addResourcePath(String key, String resource)
{
resourcePaths.put(key, resource);
}
}