@Override
public Map<QualifiedTableName, List<ColumnMetadata>> listTableColumns(
QualifiedTablePrefix prefix) {
checkNotNull(prefix, "prefix is null");
LinkedHashMap<QualifiedTableName, List<ColumnMetadata>> tableColumns = new LinkedHashMap<>();
for (ConnectorMetadataEntry connectorMetadata : allConnectorsFor(prefix.getCatalogName())) {
for (Entry<SchemaTableName, List<ColumnMetadata>> entry :
connectorMetadata
.getMetadata()
.listTableColumns(prefix.asSchemaTablePrefix())
.entrySet()) {
QualifiedTableName tableName =
new QualifiedTableName(
prefix.getCatalogName(),
entry.getKey().getSchemaName(),
entry.getKey().getTableName());
if (!tableColumns.containsKey(tableName)) {
tableColumns.put(tableName, entry.getValue());
}
}
}
return ImmutableMap.copyOf(tableColumns);
}
