001: /*
002: * The Apache Software License, Version 1.1
003: *
004: *
005: * Copyright (c) 2002 The Apache Software Foundation. All rights
006: * reserved.
007: *
008: * Redistribution and use in source and binary forms, with or without
009: * modification, are permitted provided that the following conditions
010: * are met:
011: *
012: * 1. Redistributions of source code must retain the above copyright
013: * notice, this list of conditions and the following disclaimer.
014: *
015: * 2. Redistributions in binary form must reproduce the above copyright
016: * notice, this list of conditions and the following disclaimer in
017: * the documentation and/or other materials provided with the
018: * distribution.
019: *
020: * 3. The end-user documentation included with the redistribution,
021: * if any, must include the following acknowledgment:
022: * "This product includes software developed by the
023: * Apache Software Foundation (http://www.apache.org/)."
024: * Alternately, this acknowledgment may appear in the software itself,
025: * if and wherever such third-party acknowledgments normally appear.
026: *
027: * 4. The names "WSIF" and "Apache Software Foundation" must
028: * not be used to endorse or promote products derived from this
029: * software without prior written permission. For written
030: * permission, please contact apache@apache.org.
031: *
032: * 5. Products derived from this software may not be called "Apache",
033: * nor may "Apache" appear in their name, without prior written
034: * permission of the Apache Software Foundation.
035: *
036: * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
037: * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
038: * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
039: * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
040: * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
041: * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
042: * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
043: * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
044: * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
045: * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
046: * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
047: * SUCH DAMAGE.
048: * ====================================================================
049: *
050: * This software consists of voluntary contributions made by many
051: * individuals on behalf of the Apache Software Foundation and was
052: * originally based on software copyright (c) 2001, 2002, International
053: * Business Machines, Inc., http://www.apache.org. For more
054: * information on the Apache Software Foundation, please see
055: * <http://www.apache.org/>.
056: */
057:
058: package stockquote.wsiftypes;
059:
060: import java.net.URL;
061: import java.io.*;
062: import org.w3c.dom.*;
063: import org.xml.sax.*;
064: import javax.xml.parsers.*;
065:
066: /**
067: * This sample is taken from ApacheSOAP and changed to get
068: * JAXP document builder directly (no need for Apache SOAP classes).
069: *
070: * @author Alekander Slominski (aslom@watson.ibm.com)
071: * @author Sanjiva Weerawarana (sanjiva@watson.ibm.com)
072: */
073: public class StockQuote {
074:
075: public float getQuote(String symbol) throws Exception {
076: if (symbol == null || symbol.length() == 0)
077: return -1.0F;
078:
079: DocumentBuilderFactory factory = DocumentBuilderFactory
080: .newInstance();
081: DocumentBuilder xdb = factory.newDocumentBuilder();
082:
083: // get a real (delayed by 20min) stockquote from
084: // http://www.xmltoday.com/examples/stockquote/. The IP addr
085: // below came from the host that the above form posts to ..
086: URL url = new URL(
087: "http://www.xmltoday.com/examples/stockquote/getxmlquote.vep?s="
088: + symbol);
089: InputStream is = url.openStream();
090: Document d = xdb.parse(is);
091: Element e = d.getDocumentElement();
092: NodeList nl = e.getElementsByTagName("price");
093: e = (Element) nl.item(0);
094: String quoteStr = e.getAttribute("value");
095: try {
096: return Float.valueOf(quoteStr).floatValue();
097: } catch (NumberFormatException e1) {
098: // mebbe its an int?
099: try {
100: return Integer.valueOf(quoteStr).intValue() * 1.0F;
101: } catch (NumberFormatException e2) {
102: return -1.0F;
103: }
104: }
105: }
106: }
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