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root/i-scream/experimental/server/XMLReader/XMLPacketMaker.java
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Comparing experimental/server/XMLReader/XMLPacketMaker.java (file contents):
Revision 1.8 by pjm2, Tue Nov 14 12:23:17 2000 UTC vs.
Revision 1.12 by pjm2, Fri Nov 17 12:44:47 2000 UTC

# Line 12 | Line 12 | import javax.xml.parsers.SAXParser;
12   // XMLPacketMaker - Creates an XMLPacket object.
13   public class XMLPacketMaker extends HandlerBase {
14  
15 +    // No-args constructor.  Generally not used.
16      public XMLPacketMaker () {
17 <        // default no-args constructor.
17 >        this.xml = "<packet></packet>";
18      }
19  
20 <    // Constructor for accepting a reference to an XMLPacket
21 <    public XMLPacketMaker (XMLPacket packet) {
22 <        this.packet = packet;
20 >    // Constructor for accepting XML input.
21 >    public XMLPacketMaker (String xml) {
22 >        this.xml = xml;
23      }
24  
25 <    public static void main(String[] args){
25 <        if (args.length != 1) {
26 <            System.err.println ("Usage: cmd filename");
27 <            System.exit (1);
28 <        }
25 >    public XMLPacket createXMLPacket() {
26  
27 +        // Create the XMLPacket to store values in.
28 +        XMLPacket packet = new XMLPacket();
29 +
30          // Use the default (non-validating) parser
31          SAXParserFactory factory = SAXParserFactory.newInstance();
32          try {
33            // Set up output stream
34            out = new OutputStreamWriter (System.out, "UTF8");
33  
36            // Create the XMLPacket to store values in.
37            packet = new XMLPacket();
38
34              // Parse the input
35              SAXParser saxParser = factory.newSAXParser();
36 <            saxParser.parse(new File(args[0]), new XMLPacketMaker(packet));
36 >            saxParser.parse(xml, new XMLPacketParser(packet));
37  
43            // Print out the entire contents of the packet's HashMap.
44            System.out.println("XMLPacket contents: -");
45            packet.printAll();
46
47        } catch (Throwable t) {
48            t.printStackTrace ();
38          }
39 <        System.exit (0);
40 <    }
52 <
53 <    static private Writer out;
54 <    private String indentString = "    "; // Amount to indent
55 <    private int indentLevel = 0;
56 <
57 <    // For storing the tag heirarchy.
58 <    private ArrayList tagList = new ArrayList();
59 <    static private XMLPacket packet = null;
60 <
61 <    //===========================================================
62 <    // SAX DocumentHandler methods
63 <    //===========================================================
64 <
65 <    public void startDocument () throws SAXException {
66 <        // No purpose currently.
67 <    }
68 <
69 <    public void endDocument () throws SAXException {
70 <        // No purpose currently.
71 <    }
72 <
73 <    // Add each tag's attribute to the XMLPacket.
74 <    // Note that all attributes within an opening tag are
75 <    // stored as "someroot.sometag.attributes.attribute_name"
76 <    // E.g. If <packet> is the root node, then:
77 <    //     <packet machine_name="raptor">
78 <    // is stored as:
79 <    //     "packet.attributes.machine_name"
80 <    // within the XMLPacket.
81 <    public void startElement (String name, AttributeList attrs) throws SAXException {
82 <        indentLevel++;
83 <        tagList.add(name);
84 <        if (attrs != null) {
85 <            for (int i = 0; i < attrs.getLength (); i++) {
86 <                packet.addParam(getPath()+".attributes."+attrs.getName(i), attrs.getValue(i));
87 <            }
39 >        catch (IOException e){
40 >            System.out.println("IOException: "+e);
41          }
42 <    }
43 <
44 <    // When an XML element is finished with, we must remove
45 <    // the tag name from the tagList and decrement the indent
46 <    // level.
94 <    public void endElement (String name) throws SAXException {
95 <        tagList.remove(tagList.size()-1);    
96 <        indentLevel--;
97 <    }
98 <
99 <    // Any text falling within a pair of terminal tags must
100 <    // be added to the XMLPacket.  Trim leading and trailing
101 <    // spaces and do not bother to add if there is no data
102 <    // specified within the tags.
103 <    public void characters (char[] buf, int offset, int len) throws SAXException {
104 <        String s = new String(buf, offset, len);
105 <        if (!s.trim().equals("")) {
106 <            packet.addParam(getPath(), s);
42 >        catch (Throwable t) {
43 >            System.out.println("XMLPacketMaker - I just received an XML packet that did not contain valid XML.");
44 >            //System.out.println(e);
45 >            t.printStackTrace();
46 >            return null;
47          }
48 +        
49 +        return packet;
50      }
109
110
111    //===========================================================
112    // Helpers ...
113    //===========================================================
51      
52 <    
116 <    // Return the heirarchical string to be used as a key value
117 <    // in the XMLPacket.
118 <    private String getPath () {
119 <        String path = (String)tagList.get(0);
120 <        if (tagList.size() > 0) {
121 <            for (int i = 1 ; i < tagList.size() ; i++) {
122 <                path = path + "." + (String)tagList.get(i);
123 <            }
124 <        }
125 <        return path;
126 <    }
127 <    
52 >    String xml;
53   }

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