private boolean executeSingleQuery(
@NotNull DBCSession session, @NotNull SQLQuery sqlQuery, boolean fireEvents) {
lastError = null;
final String originalQueryText = sqlQuery.getQuery();
DBCExecutionContext executionContext = getExecutionContext();
SQLQueryResult curResult = new SQLQueryResult(sqlQuery);
if (rsOffset > 0) {
curResult.setRowOffset(rsOffset);
}
SQLQuery originalQuery = sqlQuery;
long startTime = System.currentTimeMillis();
if (fireEvents && listener != null) {
// Notify query start
listener.onStartQuery(sqlQuery);
}
try {
// Prepare statement
closeStatement();
// Check and invalidate connection
DBPDataSource dataSource = executionContext.getDataSource();
if (!connectionInvalidated
&& dataSource
.getContainer()
.getPreferenceStore()
.getBoolean(DBeaverPreferences.STATEMENT_INVALIDATE_BEFORE_EXECUTE)) {
executionContext.invalidateContext(session.getProgressMonitor());
connectionInvalidated = true;
}
try {
// Modify query (filters + parameters)
if (dataFilter != null && dataFilter.hasFilters() && dataSource instanceof SQLDataSource) {
String filteredQueryText =
((SQLDataSource) dataSource)
.getSQLDialect()
.addFiltersToQuery(dataSource, originalQueryText, dataFilter);
sqlQuery = new SQLQuery(filteredQueryText, sqlQuery.getOffset(), sqlQuery.getLength());
}
} catch (DBException e) {
throw new DBCException("Can't apply query filter", e);
}
Boolean hasParameters = prepareStatementParameters(sqlQuery);
if (hasParameters == null) {
return false;
}
statistics.setQueryText(originalQueryText);
startTime = System.currentTimeMillis();
DBCExecutionSource source =
new AbstractExecutionSource(
dataContainer, executionContext, partSite.getPart(), sqlQuery);
curStatement =
DBUtils.prepareStatement(
source,
session,
hasParameters ? DBCStatementType.QUERY : DBCStatementType.SCRIPT,
sqlQuery,
rsOffset,
rsMaxRows);
if (hasParameters) {
bindStatementParameters(session, sqlQuery);
}
// Execute statement
try {
boolean hasResultSet = curStatement.executeStatement();
curResult.setHasResultSet(hasResultSet);
statistics.addExecuteTime(System.currentTimeMillis() - startTime);
statistics.addStatementsCount();
long updateCount = -1;
while (hasResultSet || resultSetNumber == 0 || updateCount >= 0) {
// Fetch data only if we have to fetch all results or if it is rs requested
if (fetchResultSetNumber < 0 || fetchResultSetNumber == resultSetNumber) {
if (hasResultSet && fetchResultSets) {
DBDDataReceiver dataReceiver =
resultsConsumer.getDataReceiver(sqlQuery, resultSetNumber);
if (dataReceiver != null) {
hasResultSet =
fetchQueryData(
session, curStatement.openResultSet(), curResult, dataReceiver, true);
}
}
}
if (!hasResultSet) {
try {
updateCount = curStatement.getUpdateRowCount();
if (updateCount >= 0) {
curResult.setUpdateCount(updateCount);
statistics.addRowsUpdated(updateCount);
}
} catch (DBCException e) {
// In some cases we can't read update count
// This is bad but we can live with it
// Just print a warning
log.warn("Can't obtain update count", e);
}
}
if (hasResultSet && fetchResultSets) {
resultSetNumber++;
fetchResultSetNumber = resultSetNumber;
}
if (!hasResultSet && updateCount < 0) {
// Nothing else to fetch
break;
}
if (dataSource.getInfo().supportsMultipleResults()) {
hasResultSet = curStatement.nextResults();
updateCount = hasResultSet ? -1 : 0;
} else {
break;
}
}
try {
curResult.setWarnings(curStatement.getStatementWarnings());
} catch (Throwable e) {
log.warn("Can't read execution warnings", e);
}
} finally {
// monitor.subTask("Close query");
if (!keepStatementOpen()) {
closeStatement();
}
// Release parameters
releaseStatementParameters(sqlQuery);
}
} catch (Throwable ex) {
if (!(ex instanceof DBException)) {
log.error("Unexpected error while processing SQL", ex);
}
curResult.setError(ex);
lastError = ex;
} finally {
curResult.setQueryTime(System.currentTimeMillis() - startTime);
if (fireEvents && listener != null) {
// Notify query end
listener.onEndQuery(curResult);
}
}
if (curResult.getError() != null && errorHandling != SQLScriptErrorHandling.IGNORE) {
return false;
}
// Success
lastGoodQuery = originalQuery;
return true;
}
