Revision 1841
Added by Jing Tao about 21 years ago
| src/edu/ucsb/nceas/metacat/DBSAXHandler.java | ||
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| 400 | 400 |
int step = 0; |
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int counter = 0; |
| 402 | 402 |
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try {
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try |
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{
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// stop 5 second |
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Thread.sleep(5000); |
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// Opening separate db connection for writing XML Index |
| 406 | 408 |
dbConn=DBConnectionPool.getDBConnection("DBSAXHandler.run");
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| 407 | 409 |
serialNumber=dbConn.getCheckOutSerialNumber(); |
| 408 | 410 |
dbConn.setAutoCommit(false); |
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//make sure record is done |
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checkDocumentTable(); |
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// Going through the elements of the document and writing its Index |
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Enumeration nodes = nodeIndex.elements(); |
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while ( nodes.hasMoreElements() ) {
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currNode = (DBSAXNode)nodes.nextElement(); |
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currNode.updateNodeIndex(dbConn, docid, doctype); |
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} |
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dbConn.commit(); |
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} catch (Exception e) {
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try {
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dbConn.rollback(); |
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//dbconn.close(); |
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} catch (SQLException sqle) {}
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MetaCatUtil.debugMessage("Error in DBSAXHandler.run " +
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e.getMessage(), 30); |
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} |
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finally |
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{
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DBConnectionPool.returnDBConnection(dbConn, serialNumber); |
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}//finally |
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} |
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/* method to make sure insert is finished before create index table |
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* If new version of record is in xml_documents every thing will be fine |
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*/ |
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private void checkDocumentTable() throws Exception |
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{
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DBConnection dbConn = null; |
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int serialNumber = -1; |
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try |
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{
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// Opening separate db connection for writing XML Index |
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dbConn=DBConnectionPool.getDBConnection("DBSAXHandler.checkDocumentTable");
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serialNumber=dbConn.getCheckOutSerialNumber(); |
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//the following while loop construct checks to make sure that the docid |
| 411 | 452 |
//of the document that we are trying to index is already |
| 412 | 453 |
//in the xml_documents table. if this is not the case, the foreign |
| ... | ... | |
| 416 | 457 |
long startTime = System.currentTimeMillis(); |
| 417 | 458 |
while(!inxmldoc) |
| 418 | 459 |
{
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String xmlDocumentsCheck = "select distinct docid from xml_documents"; |
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String xmlDocumentsCheck = "select distinct docid from xml_documents" + |
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" where docid ='" + docid + "' and " + |
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" rev ='" + revision + "'"; |
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PreparedStatement xmlDocCheck = |
| 421 | 465 |
dbConn.prepareStatement(xmlDocumentsCheck); |
| 422 | 466 |
// Increase usage count |
| ... | ... | |
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xmlDocCheck.execute(); |
| 425 | 469 |
ResultSet doccheckRS = xmlDocCheck.getResultSet(); |
| 426 | 470 |
boolean tableHasRows = doccheckRS.next(); |
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Vector docids = new Vector(); |
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while(tableHasRows) |
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if (tableHasRows) |
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{
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docids.add(doccheckRS.getString(1).trim());
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tableHasRows = doccheckRS.next();
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MetaCatUtil.debugMessage("=========== find the correct document", 35);
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inxmldoc = true;
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} |
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for(int i=0; i<docids.size(); i++) |
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{
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String d = ((String)docids.elementAt(i)).trim(); |
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if(docid.trim().equals(d)) |
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{
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inxmldoc = true; |
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} |
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} |
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doccheckRS.close(); |
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xmlDocCheck.close(); |
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// make sure the while loop will be ended in reseaonable time |
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long stopTime = System.currentTimeMillis(); |
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if ((stopTime - startTime) > INDEXDELAY) |
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{
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throw new Exception("Couldn't find the docid for index build in" +
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doccheckRS.close(); |
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xmlDocCheck.close(); |
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// make sure the while loop will be ended in reseaonable time |
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long stopTime = System.currentTimeMillis(); |
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if ((stopTime - startTime) > INDEXDELAY) |
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{
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throw new Exception("Couldn't find the docid for index build in" +
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"reseaonable time!"); |
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} |
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} |
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// Going through the elements of the document and writing its Index |
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Enumeration nodes = nodeIndex.elements(); |
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while ( nodes.hasMoreElements() ) {
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currNode = (DBSAXNode)nodes.nextElement(); |
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currNode.updateNodeIndex(dbConn, docid, doctype); |
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} |
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dbConn.commit(); |
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//if this is a package file |
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} catch (Exception e) {
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try {
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} |
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}//while |
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} |
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catch (Exception e) |
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{
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try |
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{
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dbConn.rollback(); |
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//dbconn.close(); |
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} catch (SQLException sqle) {}
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} |
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catch (SQLException sqle) |
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{}
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MetaCatUtil.debugMessage("Error in DBSAXHandler.run " +
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| 473 | 497 |
e.getMessage(), 30); |
| 474 | 498 |
|
| ... | ... | |
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{
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DBConnectionPool.returnDBConnection(dbConn, serialNumber); |
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}//finally |
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} |
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/** SAX Handler that is called for each XML text node */ |
| 483 | 508 |
public void characters(char[] cbuf, int start, int len) throws SAXException |
| 484 | 509 |
{
|
Also available in: Unified diff
Add a checking for xml_nodes insert finished, then start build index table.