/**
* Get the key from the row.
*
* @param row the row
* @param ifEmpty the value to use if the row is empty
* @param ifNull the value to use if the column is NULL
* @return the key
*/
long getKey(SearchRow row, long ifEmpty, long ifNull) {
if (row == null) {
return ifEmpty;
}
Value v = row.getValue(mainIndexColumn);
if (v == null) {
throw DbException.throwInternalError(row.toString());
} else if (v == ValueNull.INSTANCE) {
return ifNull;
}
return v.getLong();
}
/**
* This method is called if a file should no longer be deleted if the object is garbage collected.
*
* @param ref the reference as returned by addFile
* @param fileName the file name
*/
public void stopAutoDelete(Reference<?> ref, String fileName) {
IOUtils.trace("TempFileDeleter.stopAutoDelete", fileName, ref);
if (ref != null) {
String f2 = refMap.remove(ref);
if (SysProperties.CHECK) {
if (f2 == null || !f2.equals(fileName)) {
DbException.throwInternalError(
"f2:" + f2 + " " + (f2 == null ? "" : f2) + " f:" + fileName);
}
}
}
deleteUnused();
}
public PageDataIndex(
RegularTable table,
int id,
IndexColumn[] columns,
IndexType indexType,
boolean create,
Session session) {
initBaseIndex(table, id, table.getName() + "_DATA", columns, indexType);
RegularDatabase database = (RegularDatabase) this.database;
this.multiVersion = database.isMultiVersion();
// trace = database.getTrace(Trace.PAGE_STORE + "_di");
// trace.setLevel(TraceSystem.DEBUG);
if (multiVersion) {
sessionRowCount = New.hashMap();
isMultiVersion = true;
} else {
sessionRowCount = null;
}
tableData = table;
this.store = database.getPageStore();
store.addIndex(this);
if (!database.isPersistent()) {
throw DbException.throwInternalError(table.getName());
}
if (create) {
rootPageId = store.allocatePage();
store.addMeta(this, session);
PageDataLeaf root = PageDataLeaf.create(this, rootPageId, PageData.ROOT);
store.update(root);
} else {
rootPageId = store.getRootPageId(id);
PageData root = getPage(rootPageId, 0);
lastKey = root.getLastKey();
rowCount = root.getRowCount();
}
if (trace.isDebugEnabled()) {
trace.debug("{0} opened rows: {1}", this, rowCount);
}
table.setRowCount(rowCount);
memoryPerPage = (Constants.MEMORY_PAGE_DATA + store.getPageSize()) >> 2;
}
/**
* Read the given page.
*
* @param id the page id
* @param parent the parent, or -1 if unknown
* @return the page
*/
PageData getPage(int id, int parent) {
Page pd = store.getPage(id);
if (pd == null) {
PageDataLeaf empty = PageDataLeaf.create(this, id, parent);
// could have been created before, but never committed
store.logUndo(empty, null);
store.update(empty);
return empty;
} else if (!(pd instanceof PageData)) {
throw DbException.get(ErrorCode.FILE_CORRUPTED_1, "" + pd);
}
PageData p = (PageData) pd;
if (parent != -1) {
if (p.getParentPageId() != parent) {
throw DbException.throwInternalError(
p + " parent " + p.getParentPageId() + " expected " + parent);
}
}
return p;
}
/**
* Delete the given file now. This will remove the reference from the list.
*
* @param ref the reference as returned by addFile
* @param fileName the file name
*/
public synchronized void deleteFile(Reference<?> ref, String fileName) {
if (ref != null) {
String f2 = refMap.remove(ref);
if (f2 != null) {
if (SysProperties.CHECK) {
if (fileName != null && !f2.equals(fileName)) {
DbException.throwInternalError("f2:" + f2 + " f:" + fileName);
}
}
fileName = f2;
}
}
if (fileName != null && FileUtils.exists(fileName)) {
try {
IOUtils.trace("TempFileDeleter.deleteFile", fileName, null);
FileUtils.tryDelete(fileName);
} catch (Exception e) {
// TODO log such errors?
}
}
}
public Cursor findFirstOrLast(Session session, boolean first) {
throw DbException.throwInternalError();
}
public String getCreateSQLForCopy(Table table, String quotedName) {
throw DbException.throwInternalError();
}
