| 1 | package org.tipple.mapDisplay;
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| 2 |
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| 3 | import java.util.ArrayList;
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| 4 | import java.util.HashMap;
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| 5 |
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| 6 | import org.xml.sax.Attributes;
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| 7 | import org.xml.sax.SAXException;
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| 8 | import org.xml.sax.helpers.DefaultHandler;
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| 9 |
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| 10 | public class xmlHandler extends DefaultHandler {
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| 11 | String lockon_element;
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| 12 | Boolean locked_on_;
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| 13 | ArrayList<HashMap<String, String>> lockon_list;
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| 14 | HashMap<String, String> hashmap;
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| 15 | String active_element;
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| 16 | StringBuffer inner_text;
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| 17 | String active_attr;
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| 18 | Boolean recordElement;
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| 19 | String elementType;
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| 20 |
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| 21 | // ===========================================================
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| 22 | // Getter & Setter
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| 23 | // ===========================================================
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| 24 | public xmlHandler(String lockon_element) {
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| 25 | // initial settings to parse a file
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| 26 | this.lockon_element = lockon_element;
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| 27 | lockon_list = new ArrayList<HashMap<String, String>>();
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| 28 | locked_on_ = false;
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| 29 | recordElement = false;
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| 30 | elementType = "";
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| 31 | hashmap = new HashMap<String, String>();
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| 32 | }
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| 33 |
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| 34 | public ArrayList<HashMap<String, String>> getHashmapList() {
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| 35 | return lockon_list;
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| 36 | }
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| 37 |
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| 38 | /**
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| 39 | * Gets be called on opening tags like: <tag> Can provide attribute(s), when
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| 40 | * xml was like: <tag attribute="attributeValue">
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| 41 | */
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| 42 |
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| 43 | public void startElement(String namespaceURI, String localName,
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| 44 | String qName, Attributes atts) throws SAXException {
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| 45 |
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| 46 | if ((localName.equalsIgnoreCase(lockon_element))
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| 47 | && (atts.getValue("nodeType")).equalsIgnoreCase("leaf")) {
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| 48 |
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| 49 | hashmap = new HashMap<String, String>();
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| 50 | locked_on_ = true; // => covert each child element inside this to a
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| 51 | String attrValueNode = atts.getValue("nodeID");
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| 52 | hashmap.put("nodeID", attrValueNode);
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| 53 |
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| 54 | } else if (locked_on_) {
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| 55 | if (localName.equalsIgnoreCase("metadata")
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| 56 | || localName.equalsIgnoreCase("nodeContent")) {
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| 57 | recordElement = true;
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| 58 | inner_text = new StringBuffer();
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| 59 | if (localName.equalsIgnoreCase("metadata")) {
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| 60 | active_element = atts.getValue("name");
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| 61 |
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| 62 | } else if (localName.equalsIgnoreCase("nodeContent")) {
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| 63 | active_element = "text";
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| 64 |
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| 65 | }
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| 66 | }
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| 67 |
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| 68 | }
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| 69 | // else ignore element as outside area of interest
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| 70 | }
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| 71 |
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| 72 | /**
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| 73 | * Gets be called on closing tags like: </tag>
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| 74 | */
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| 75 | public void endElement(String namespaceURI, String localName, String qName)
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| 76 | throws SAXException {
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| 77 | if (localName.equalsIgnoreCase(lockon_element)) {
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| 78 | // push hashmap onto arraylist
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| 79 | lockon_list.add(hashmap);
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| 80 | hashmap = null;
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| 81 | locked_on_ = false;
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| 82 | } else if ((localName.equalsIgnoreCase("metadata"))
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| 83 | || (localName.equalsIgnoreCase("nodeContent"))) {
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| 84 | active_element = null;
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| 85 | inner_text = null;
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| 86 | recordElement = false;
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| 87 |
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| 88 | }
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| 89 |
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| 90 | }
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| 91 |
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| 92 | /**
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| 93 | * Gets be called on the following structure: <tag>characters</tag>
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| 94 | */
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| 95 |
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| 96 | public void characters(char ch[], int start, int length) {
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| 97 | if (this.recordElement) {
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| 98 | String text = new String(ch, start, length);
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| 99 | inner_text.append(text);
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| 100 | hashmap.put(active_element, inner_text.toString());
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| 101 |
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| 102 | }
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| 103 | }
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| 104 |
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| 105 | }
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