[GitHub] [shardingsphere] strongduanmu commented on a diff in pull request #20616: add constraint info in PostgreSQLSchemaMetaDataLoader

[GitBox <gi...@apache.org>]

strongduanmu commented on code in PR #20616:
URL: https://github.com/apache/shardingsphere/pull/20616#discussion_r963213382


##########
shardingsphere-infra/shardingsphere-infra-common/src/main/java/org/apache/shardingsphere/infra/metadata/database/schema/loader/dialect/PostgreSQLSchemaMetaDataLoader.java:
##########
@@ -107,6 +116,29 @@ private Collection<ViewMetaData> loadViewMetaData(final DataSource dataSource, f
         return result;
     }
     
+    private Map<String, Multimap<String, ConstraintMetaData>> loadConstraintMetaDataMap(final DataSource dataSource,
+                                                                                        final Collection<String> schemaNames) throws SQLException {
+        Map<String, Multimap<String, ConstraintMetaData>> result = new LinkedHashMap<>();
+        try (Connection connection = dataSource.getConnection(); PreparedStatement preparedStatement = connection.prepareStatement(getConstraintKeyMetaDataSQL(schemaNames))) {
+            try (ResultSet resultSet = preparedStatement.executeQuery()) {
+                while (resultSet.next()) {
+                    String schemaName = resultSet.getString("table_schema");
+                    Multimap<String, ConstraintMetaData> constraintMetaData = result.computeIfAbsent(schemaName, key -> LinkedHashMultimap.create());
+                    

Review Comment:
   Please remove useless blank line.



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