use of org.apache.ignite.internal.sql.command.SqlKillContinuousQueryCommand in project ignite by apache.
the class QueryParser method parseNative.
/**
* Tries to parse sql query text using native parser. Only first (leading) sql command of the multi-statement is
* actually parsed.
*
* @param schemaName Schema name.
* @param qry which sql text to parse.
* @param remainingAllowed Whether multiple statements are allowed.
* @return Command or {@code null} if cannot parse this query.
*/
@SuppressWarnings("IfMayBeConditional")
@Nullable
private QueryParserResult parseNative(String schemaName, SqlFieldsQuery qry, boolean remainingAllowed) {
String sql = qry.getSql();
// Heuristic check for fast return.
if (!INTERNAL_CMD_RE.matcher(sql.trim()).find())
return null;
try {
SqlParser parser = new SqlParser(schemaName, sql);
SqlCommand nativeCmd = parser.nextCommand();
assert nativeCmd != null : "Empty query. Parser met end of data";
if (!(nativeCmd instanceof SqlCreateIndexCommand || nativeCmd instanceof SqlDropIndexCommand || nativeCmd instanceof SqlBeginTransactionCommand || nativeCmd instanceof SqlCommitTransactionCommand || nativeCmd instanceof SqlRollbackTransactionCommand || nativeCmd instanceof SqlBulkLoadCommand || nativeCmd instanceof SqlAlterTableCommand || nativeCmd instanceof SqlSetStreamingCommand || nativeCmd instanceof SqlCreateUserCommand || nativeCmd instanceof SqlAlterUserCommand || nativeCmd instanceof SqlDropUserCommand || nativeCmd instanceof SqlKillQueryCommand || nativeCmd instanceof SqlKillComputeTaskCommand || nativeCmd instanceof SqlKillServiceCommand || nativeCmd instanceof SqlKillTransactionCommand || nativeCmd instanceof SqlKillScanQueryCommand || nativeCmd instanceof SqlKillContinuousQueryCommand || nativeCmd instanceof SqlAnalyzeCommand || nativeCmd instanceof SqlRefreshStatitsicsCommand || nativeCmd instanceof SqlDropStatisticsCommand))
return null;
SqlFieldsQuery newQry = cloneFieldsQuery(qry).setSql(parser.lastCommandSql());
QueryDescriptor newPlanKey = queryDescriptor(schemaName, newQry);
SqlFieldsQuery remainingQry = null;
if (!F.isEmpty(parser.remainingSql())) {
checkRemainingAllowed(remainingAllowed);
remainingQry = cloneFieldsQuery(qry).setSql(parser.remainingSql()).setArgs(qry.getArgs());
}
QueryParserResultCommand cmd = new QueryParserResultCommand(nativeCmd, null, false);
return new QueryParserResult(newPlanKey, queryParameters(newQry), remainingQry, // Currently none of native statements supports parameters.
Collections.emptyList(), null, null, cmd);
} catch (SqlStrictParseException e) {
throw new IgniteSQLException(e.getMessage(), e.errorCode(), e);
} catch (Exception e) {
// Cannot parse, return.
if (log.isDebugEnabled())
log.debug("Failed to parse SQL with native parser [qry=" + sql + ", err=" + e + ']');
if (!IgniteSystemProperties.getBoolean(IgniteSystemProperties.IGNITE_SQL_PARSER_DISABLE_H2_FALLBACK))
return null;
int code = IgniteQueryErrorCode.PARSING;
if (e instanceof SqlParseException)
code = ((SqlParseException) e).code();
throw new IgniteSQLException("Failed to parse DDL statement: " + sql + ": " + e.getMessage(), code, e);
}
}
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