Revision 2293
Added by Matt Jones almost 20 years ago
| src/edu/ucsb/nceas/metacat/DocumentImpl.java | ||
|---|---|---|
| 1152 | 1152 |
} |
| 1153 | 1153 |
|
| 1154 | 1154 |
/** |
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* Build the index record for this document. This requires that the |
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* DocumentImpl instance exists, so first call the constructor that reads |
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* the document from the database. |
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* Build the index records for this document. For each node, all absolute |
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* and relative paths to the root of the document are created and inserted |
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* into the xml_index table. This requires that the DocumentImpl instance |
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* exists, so first call the constructor that reads the document from the |
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* database. |
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*/ |
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public void buildIndex() throws McdbException |
| 1160 | 1162 |
{
|
| ... | ... | |
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TreeSet nodeRecordLists = getNodeRecordList(rootnodeid); |
| 1163 | 1165 |
Stack openElements = new Stack(); |
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boolean atRootElement = true; |
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boolean previousNodeWasElement = false;
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long rootNodeId = -1;
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// Build a map of the same records that are present in the |
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// TreeSet so that any node can be easily accessed |
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// TreeSet so that any node can be easily accessed by nodeId
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HashMap nodeRecordMap = new HashMap(); |
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Iterator it = nodeRecordLists.iterator(); |
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while (it.hasNext()) {
|
| ... | ... | |
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if (currentNode.nodetype.equals("ELEMENT") ||
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| 1182 | 1184 |
currentNode.nodetype.equals("ATTRIBUTE") ) {
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| 1183 | 1185 |
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System.err.println("Starting Node: " +
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currentNode.getNodeId() + " (" +
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currentNode.getParentNodeId() + "): " + |
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System.err.println("\nStarting Node: " +
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currentNode.getNodeId() + " (" +
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currentNode.getParentNodeId() + "): " +
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currentNode.getNodeName() + " (" +
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currentNode.getNodeType() + ")" + |
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"\n"); |
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traverseParents(nodeRecordMap, currentNode.getNodeId(), ""); |
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} |
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/* |
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util.debugMessage("[Got Node ID: " + currentNode.nodeid + " ("
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+ currentNode.parentnodeid + ", " + currentNode.nodeindex |
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+ ", " + currentNode.nodetype + ", " + currentNode.nodename |
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+ ", " + currentNode.nodedata + ")]", 40); |
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*/ |
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// Print the end tag for the previous node if needed |
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// |
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// This is determined by inspecting the parent nodeid for the |
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// currentNode. If it is the same as the nodeid of the last element |
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// that was pushed onto the stack, then we are still in that |
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// previous |
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// parent element, and we do nothing. However, if it differs, then |
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// we |
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// have returned to a level above the previous parent, so we go into |
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// a loop and pop off nodes and print out their end tags until we |
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// get |
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// the node on the stack to match the currentNode parentnodeid |
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// |
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// So, this of course means that we rely on the list of elements |
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// having been sorted in a depth first traversal of the nodes, which |
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// is handled by the NodeComparator class used by the TreeSet |
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if (!atRootElement) {
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NodeRecord currentElement = (NodeRecord) openElements.peek(); |
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if (currentNode.parentnodeid != currentElement.nodeid) {
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while (currentNode.parentnodeid != currentElement.nodeid) {
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currentElement = (NodeRecord) openElements.pop(); |
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util.debugMessage("\n POPPED2: "
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+ currentElement.nodename, 60); |
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if (previousNodeWasElement) {
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//out.print(">");
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previousNodeWasElement = false; |
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} |
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if (currentElement.nodeprefix != null) {
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//out.print("</" + currentElement.nodeprefix + ":"
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//+ currentElement.nodename + ">"); |
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} else {
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//System.err.print("/");
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//out.print("</" + currentElement.nodename + ">");
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} |
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currentElement = (NodeRecord) openElements.peek(); |
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} |
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} |
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} |
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|
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// Handle the DOCUMENT node |
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if (currentNode.nodetype.equals("DOCUMENT")) {
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// Do nothing |
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// Handle the ELEMENT nodes |
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} else if (currentNode.nodetype.equals("ELEMENT")) {
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currentNode.getNodeType() + ")"); |
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if (atRootElement) {
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rootNodeId = currentNode.getNodeId(); |
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| 1243 | 1193 |
atRootElement = false; |
| 1244 |
} else {
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if (previousNodeWasElement) {
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//out.print(">");
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} |
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} |
| 1249 |
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openElements.push(currentNode); |
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util.debugMessage("\n PUSHED2: " + currentNode.nodename, 60);
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previousNodeWasElement = true; |
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if (currentNode.nodeprefix != null) {
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//out.print("<" + currentNode.nodeprefix + ":"
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//+ currentNode.nodename); |
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} else {
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//out.print("<" + currentNode.nodename);
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//System.err.print(currentNode.nodename + "\n"); |
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//System.err.print("/");
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//System.err.print(currentNode.nodename + "\n"); |
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| 1261 |
} |
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| 1262 |
|
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// Handle the ATTRIBUTE nodes |
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| 1264 |
} else if (currentNode.nodetype.equals("ATTRIBUTE")) {
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| 1265 |
if (currentNode.nodeprefix != null) {
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//out.print(" " + currentNode.nodeprefix + ":"
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//+ currentNode.nodename + "=\"" |
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//+ currentNode.nodedata + "\""); |
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} else {
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//out.print(" " + currentNode.nodename + "=\""
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//+ currentNode.nodedata + "\""); |
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//System.err.print(currentNode.nodename); |
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} |
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|
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// Handle the NAMESPACE nodes |
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} else if (currentNode.nodetype.equals("NAMESPACE")) {
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// Do nothing |
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|
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// Handle the TEXT nodes |
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} else if (currentNode.nodetype.equals("TEXT")) {
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if (previousNodeWasElement) {
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//out.print(">");
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} |
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previousNodeWasElement = false; |
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// Handle the COMMENT nodes |
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} else if (currentNode.nodetype.equals("COMMENT")) {
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if (previousNodeWasElement) {
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//out.print(">");
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} |
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previousNodeWasElement = false; |
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| 1291 |
|
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// Handle the PI nodes |
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| 1293 |
} else if (currentNode.nodetype.equals("PI")) {
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if (previousNodeWasElement) {
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//out.print(">");
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} |
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previousNodeWasElement = false; |
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// Handle the DTD nodes (docname, publicid, systemid) |
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} else if (currentNode.nodetype.equals(DTD)) {
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// Do nothing |
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// Handle any other node type (do nothing) |
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} else {
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// Any other types of nodes are not handled. |
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// Probably should throw an exception here to indicate this |
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traverseParents(nodeRecordMap, rootNodeId, |
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currentNode.getNodeId(), ""); |
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| 1305 | 1197 |
} |
| 1306 |
//out.flush(); |
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| 1307 | 1198 |
} |
| 1308 |
|
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| 1309 |
// Print the final end tag for the root element |
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while (!openElements.empty()) {
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NodeRecord currentElement = (NodeRecord) openElements.pop(); |
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util.debugMessage("\n POPPED2: " + currentElement.nodename, 60);
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if (currentElement.nodeprefix != null) {
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| 1314 |
//out.print("</" + currentElement.nodeprefix + ":"
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| 1315 |
//+ currentElement.nodename + ">"); |
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} else {
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| 1317 |
//out.print("</" + currentElement.nodename + ">");
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| 1318 |
} |
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| 1319 |
} |
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| 1320 |
//out.flush(); |
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| 1321 | 1199 |
} |
| 1322 | 1200 |
|
| 1323 | 1201 |
/** |
| ... | ... | |
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* hashmap of paths to be indexed. |
| 1326 | 1204 |
* |
| 1327 | 1205 |
* @param records the set of records hashed by nodeId |
| 1206 |
* @param rootNodeId the id of the root element of the document |
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| 1328 | 1207 |
* @param id the id of the current node to be processed |
| 1329 | 1208 |
* @param children the string representation of all child nodes of this id |
| 1330 | 1209 |
*/ |
| 1331 |
private void traverseParents(HashMap records, long id, String children) {
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| 1210 |
private void traverseParents(HashMap records, long rootNodeId, long id, |
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| 1211 |
String children) {
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| 1332 | 1212 |
NodeRecord current = (NodeRecord)records.get(new Long(id)); |
| 1333 | 1213 |
String currentName = current.getNodeName(); |
| 1334 | 1214 |
if (current.nodetype.equals("ELEMENT") ||
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| 1335 | 1215 |
current.nodetype.equals("ATTRIBUTE") ) {
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| 1336 | 1216 |
|
| 1337 |
System.err.print(currentName +"\n"); |
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| 1217 |
if (children.equals("")) {
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| 1218 |
System.err.print("A: " + currentName +"\n");
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| 1219 |
} |
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| 1338 | 1220 |
currentName = "/" + currentName; |
| 1339 |
System.err.print(currentName +"\n"); |
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| 1340 | 1221 |
long parentId = current.getParentNodeId(); |
| 1341 | 1222 |
currentName = currentName + children; |
| 1342 | 1223 |
if (parentId != 0) {
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| 1343 |
traverseParents(records, parentId, currentName); |
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| 1224 |
traverseParents(records, rootNodeId, parentId, currentName);
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|
| 1344 | 1225 |
} |
| 1345 | 1226 |
if (!children.equals("")) {
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| 1346 |
System.err.print(current.getNodeName() + children +"\n"); |
|
| 1347 |
System.err.print('/' + current.getNodeName() + children +"\n");
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|
| 1227 |
System.err.print("B: " + current.getNodeName() + children +"\n");
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|
| 1348 | 1228 |
} |
| 1229 |
if (id == rootNodeId) {
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| 1230 |
System.err.print("C: " + '/' + current.getNodeName() +
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| 1231 |
children +"\n"); |
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| 1232 |
} |
|
| 1349 | 1233 |
} |
| 1350 | 1234 |
} |
| 1351 | 1235 |
|
Also available in: Unified diff
Added changes to buildIndex() function. Now it is finding the right set of
paths, just have to save these in a hash and then add them to the DB xml_index
table.