Revert "[AD-763] [JDBC] remove table null check in getPrimaryKeys and getImportedKeys (#351)" (#371)

* Revert "[AD-763] [JDBC] remove table null check in getPrimaryKeys and getImportedKeys (#351)"

This reverts commit 6524d3a

* Commit Code Coverage Badge

Co-authored-by: affonsoBQ <affonsoBQ@users.noreply.github.com>

Author: affonsov

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@@ -513,7 +513,7 @@ public ResultSet getPrimaryKeys(final String catalog, final String schema,
         final List<List<Object>> metaData = new ArrayList<>();
         if (schema == null || properties.getDatabase().equals(schema)) {
             for (String tableName : databaseMetadata.getTableSchemaMap().keySet()) {
-                if (tableName.equals(table)) {
+                if (table == null || tableName.equals(table)) {
                     final DocumentDbSchemaTable metadataTable = databaseMetadata
                             .getTableSchemaMap().get(tableName);
                     if (metadataTable == null) {
@@ -576,7 +576,7 @@ private void addImportedKeysForSchema(final String table,
             final List<List<Object>> metaData) throws SQLException {
         final String regexTablePattern = convertPatternToRegex(table);
         for (String tableName : databaseMetadata.getTableSchemaMap().keySet()) {
-            if (tableName.matches(regexTablePattern)) {
+            if (table == null || tableName.matches(regexTablePattern)) {
                 final DocumentDbSchemaTable schemaTable = databaseMetadata
                         .getTableSchemaMap().get(tableName);
                 if (schemaTable == null) {

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@@ -503,7 +503,7 @@ void testGetPrimaryKeysFilters() throws SQLException {
         final ResultSet emptyResultSetTable = metadata.getPrimaryKeys(null, null, "invalidCollection");
         Assertions.assertFalse(emptyResultSetTable.next());
         final ResultSet noFilterPrimaryKeys = metadata.getPrimaryKeys(null, null, null);
-        Assertions.assertFalse(noFilterPrimaryKeys.next());
+        Assertions.assertTrue(noFilterPrimaryKeys.next());
     }
 
     @Test
@@ -523,7 +523,7 @@ void testGetImportedKeysFilters() throws SQLException {
         }
 
         final ResultSet noFilterImportedKeys = metadata.getImportedKeys(null, null, null);
-        Assertions.assertFalse(noFilterImportedKeys.next());
+        Assertions.assertTrue(noFilterImportedKeys.next());
 
     }