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/*
* Copyright 2001-2004 The Apache Software Foundation.
*
* 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 samples.stock ;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.NodeList;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import java.net.URL;
/**
* See \samples\stock\readme for info.
*
* @author Sanjiva Weerawarana (sanjiva@watson.ibm.com)
* @author Doug Davis (dug@us.ibm.com)
*/
public class StockQuoteService {
public String test() {
return( "Just a test" );
}
public float getQuote (String symbol) throws Exception {
// get a real (delayed by 20min) stockquote from
// http://services.xmethods.net/axis/. The IP addr
// below came from the host that the above form posts to ..
if ( symbol.equals("XXX") ) return( (float) 55.25 );
URL url = new URL( "http://services.xmethods.net/axis/getQuote?s="
+ symbol );
DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
DocumentBuilder db = dbf.newDocumentBuilder();
Document doc = db.parse( url.toExternalForm() );
Element elem = doc.getDocumentElement();
NodeList list = elem.getElementsByTagName( "stock_quote" );
if ( list != null && list.getLength() != 0 ) {
elem = (Element) list.item(0);
list = elem.getElementsByTagName( "price" );
elem = (Element) list.item(0);
String quoteStr = elem.getAttribute("value");
try {
return Float.valueOf(quoteStr).floatValue();
} catch (NumberFormatException e1) {
// maybe its an int?
try {
return Integer.valueOf(quoteStr).intValue() * 1.0F;
} catch (NumberFormatException e2) {
return -1.0F;
}
}
}
return( 0 );
}
}
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