/**
* @param workingPage
* @throws IOException renews page,freeOffset and numOfKeys
*/
private void changeWorkingPageTo(XBufferChannel hlpr) throws IOException {
xBufferChannel = hlpr; // may change
freeOffset = Settings.dataStartPos; // init
numOfKeys = 0; // init this is zero in this point
logicFileMgr.creatSibling(hlpr);
// xBufferChannel.position(Settings.freeOffsetPos);//5
// xBufferChannel.putInt(freeOffset);
// xBufferChannel.position(Settings.numOfKeysPos);
// xBufferChannel.putInt(numOfKeys);
unTakenNodes = numOfKeys; // ???what is this for?
}
public Document importDB(String DbName, String xmlText)
throws IOException, ParserConfigurationException, TransformerConfigurationException,
DBException // import(ame,file)
{
XmlParser parser = XmlParser.Instance;
Document doc;
LogicalFileManager logFileMgr = LogicalFileManager.Instance;
logFileMgr.createPhysicalFile(DbName);
// creates indexes on physical layer:
doc = docMgr.createDoc(DbName);
// try
// {
// parses doc and insers elements into indexes:
parser.parseXmlString(xmlText, doc);
// }
// catch(Exception e)
// {
// System.out.println(e.getMessage());
// }//bayad doc ro bhehs pas bdam ta tusho por kone.
// khorujie parser void ast,engar k faghat method haye handler ra(start,end,...)ruye
// file ya input stream ejra mikonad
return doc;
}
private int createSSIndexPage() throws IOException {
// we use pages as in BTreeType just we use 2bytes more(for isRoot n isLeaf are invalid here)
return logicFileMgr.creatRootPage(
indexName, (byte) Settings.invalidValue, (byte) Settings.invalidValue, 0, xBufferChannel);
// logicFileMgr.addPage(indexName,(byte)Settings.invalidValue,(byte)Settings.invalidValue,numOfKeys);
}