/**
* Copyright 2010 JBoss Inc
*
* 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.process.workitem.rest;
import java.io.BufferedReader;
import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.ArrayList;
import java.util.List;
import java.util.Set;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;
import org.drools.process.instance.WorkItemHandler;
import org.drools.runtime.process.WorkItem;
import org.drools.runtime.process.WorkItemManager;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import org.xml.sax.SAXException;
/*@author: salaboy*/
public class RestGeoCodeApiCallWorkItemHandler implements WorkItemHandler {
private List<ResultGeoCodeApi> results;
private int httpResponseCode;
public void executeWorkItem(WorkItem workItem, WorkItemManager manager) {
try {
//APPID from yahoo TIpNDenV34Fwcw_x32k1eX6AlQzq4wajFEFvG501Pwc6w9jKEfy2vGnkIn.r5qSQqVvyhPPaTFo-
String URL = (String) workItem.getParameter("URL");
workItem.getParameters().remove("URL");
URL = URL + (String) workItem.getParameter("Service");
workItem.getParameters().remove("Service");
URL = URL + (String) workItem.getParameter("Method");
workItem.getParameters().remove("Method");
Set<String> keys = workItem.getParameters().keySet();
for (String parameter : keys) {
URL = URL + parameter + "=" + workItem.getParameter(parameter) + "&";
}
HttpURLConnection connection;
URL getUrl = new URL(URL);
connection = (HttpURLConnection) getUrl.openConnection();
connection.setRequestMethod("GET");
System.out.println("Content-Type: " + connection.getContentType());
BufferedReader reader = new BufferedReader(new InputStreamReader(connection.getInputStream()));
String line = reader.readLine();
String response = "";
while ((line = reader.readLine()) != null) {
response +=line;
}
setHttpResponseCode(connection.getResponseCode());
this.results = parseResults(response);
System.out.println("" + response);
connection.disconnect();
} catch (MalformedURLException ex) {
Logger.getLogger(RestGeoCodeApiCallWorkItemHandler.class.getName()).log(Level.SEVERE, null, ex);
} catch (IOException ex) {
Logger.getLogger(RestGeoCodeApiCallWorkItemHandler.class.getName()).log(Level.SEVERE, null, ex);
}
}
private List<ResultGeoCodeApi> parseResults(String xml){
List<ResultGeoCodeApi> results = new ArrayList<ResultGeoCodeApi>();
try {
DocumentBuilderFactory docBuilderFactory = DocumentBuilderFactory.newInstance();
DocumentBuilder docBuilder = docBuilderFactory.newDocumentBuilder();
Document doc = docBuilder.parse(new ByteArrayInputStream(xml.getBytes()));
// normalize text representation
doc.getDocumentElement ().normalize ();
NodeList listOfResults = doc.getElementsByTagName("Result");
for(int i= 0; i< listOfResults.getLength(); i++){
ResultGeoCodeApi result = new ResultGeoCodeApi();
Node nodeResult = listOfResults.item(i);
if(nodeResult.getNodeType() == Node.ELEMENT_NODE){
Element elementResult = (Element)nodeResult;
result.setPrecision(elementResult.getAttribute("precision"));
NodeList latitudes = elementResult.getElementsByTagName("Latitude");
Element latitudeElement = (Element)latitudes.item(0);
NodeList latitudeNodes = latitudeElement.getChildNodes();
result.setLatitude(((Node)latitudeNodes.item(0)).getNodeValue().trim());
NodeList longitudes = elementResult.getElementsByTagName("Longitude");
Element longitudeElement = (Element)longitudes.item(0);
NodeList longitudeNodes = longitudeElement.getChildNodes();
result.setLongitude(((Node)longitudeNodes.item(0)).getNodeValue().trim());
NodeList addresses = elementResult.getElementsByTagName("Address");
Element addressElement = (Element)addresses.item(0);
NodeList addressNodes = addressElement.getChildNodes();
result.setAddress(((Node)addressNodes.item(0)).getNodeValue().trim());
NodeList cities = elementResult.getElementsByTagName("City");
Element cityElement = (Element)cities.item(0);
NodeList cityNodes = cityElement.getChildNodes();
result.setCity(((Node)cityNodes.item(0)).getNodeValue().trim());
NodeList states = elementResult.getElementsByTagName("State");
Element stateElement = (Element)states.item(0);
NodeList stateNodes = stateElement.getChildNodes();
result.setState(((Node)stateNodes.item(0)).getNodeValue().trim());
NodeList zips = elementResult.getElementsByTagName("Zip");
Element zipElement = (Element)zips.item(0);
NodeList zipNodes = zipElement.getChildNodes();
result.setZip(((Node)zipNodes.item(0)).getNodeValue().trim());
NodeList countries = elementResult.getElementsByTagName("Country");
Element countryElement = (Element)countries.item(0);
NodeList countryNodes = countryElement.getChildNodes();
result.setCountry(((Node)countryNodes.item(0)).getNodeValue().trim());
results.add(result);
}
}
} catch (SAXException ex) {
Logger.getLogger(RestGeoCodeApiCallWorkItemHandler.class.getName()).log(Level.SEVERE, null, ex);
} catch (IOException ex) {
Logger.getLogger(RestGeoCodeApiCallWorkItemHandler.class.getName()).log(Level.SEVERE, null, ex);
} catch (ParserConfigurationException ex) {
Logger.getLogger(RestGeoCodeApiCallWorkItemHandler.class.getName()).log(Level.SEVERE, null, ex);
}
return results;
}
public void abortWorkItem(WorkItem workItem, WorkItemManager manager) {
// Do nothing, this work item cannot be aborted
}
/**
* @return the results
*/
public List<ResultGeoCodeApi> getResults() {
return results;
}
/**
* @return the httpResponseCode
*/
public int getHttpResponseCode() {
return httpResponseCode;
}
/**
* @param httpResponseCode the httpResponseCode to set
*/
public void setHttpResponseCode(int httpResponseCode) {
this.httpResponseCode = httpResponseCode;
}
}