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Hide system tables from listTables result #141

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Merged
merged 2 commits into from
Sep 22, 2025
Merged

Hide system tables from listTables result #141

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40dfaaf
Hide system folders from listTables
alex268 Sep 22, 2025
19fe962
Added processing of UNAUTHORIZED code
alex268 Sep 22, 2025
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15 changes: 12 additions & 3 deletions jdbc/src/main/java/tech/ydb/jdbc/impl/YdbDatabaseMetaDataImpl.java
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Original file line number Diff line number Diff line change
Expand Up @@ -716,6 +716,7 @@ public ResultSet getTables(String catalog, String schemaPattern, String tableNam
FixedResultSetFactory.ResultSetBuilder rs = MetaDataTables.TABLES.createResultSet();
listTables(tableNamePattern).stream()
.map(TableRecord::new)
.filter(tr -> !tr.isHidden)
.filter(tr -> (matchTables && !tr.isSystem) || (matchSystemTables && tr.isSystem))
.sorted()
.forEach(tr -> {
Expand All @@ -730,21 +731,28 @@ public ResultSet getTables(String catalog, String schemaPattern, String tableNam

private class TableRecord implements Comparable<TableRecord> {
private final boolean isSystem;
private final boolean isHidden;
private final String name;

TableRecord(String name) {
this.name = name;
// https://github.com/ydb-platform/ydb/blob/main/ydb/core/tx/schemeshard/schemeshard_system_names.cpp#L16
this.isSystem = name.startsWith(".sys/")
|| name.startsWith(".sys_health/")
|| name.startsWith(".sys_health_dev/")
|| name.startsWith(".metadata/");
|| name.startsWith(".sys_health_dev/");
this.isHidden = name.startsWith(".metadata/")
|| name.startsWith(".tmp/")
|| name.startsWith(".backups/");
}

@Override
public int compareTo(TableRecord o) {
if (isSystem != o.isSystem) {
return isSystem ? 1 : -1;
}
if (isHidden != o.isHidden) {
return isHidden ? 1 : -1;
}
return name.compareTo(o.name);
}
}
Expand Down Expand Up @@ -1385,7 +1393,8 @@ private TableDescription describeTable(String table) throws SQLException {
.describeTable(databaseWithSuffix + table, settings)
.thenApply(result -> {
// ignore scheme errors like path not found
if (result.getStatus().getCode() == StatusCode.SCHEME_ERROR) {
StatusCode code = result.getStatus().getCode();
if (code == StatusCode.SCHEME_ERROR || code == StatusCode.UNAUTHORIZED) {
LOGGER.log(Level.WARNING, "Cannot describe table {0} -> {1}",
new Object[]{table, result.getStatus()}
);
Expand Down