From 851a0b64ac9f5a6e2c7cffca68a08d292a8655de Mon Sep 17 00:00:00 2001
From: zyyang <zyyang@taosdata.com>
Date: Thu, 21 Jan 2021 14:19:20 +0800
Subject: [PATCH] change getSchemas method

---
 .../java/com/taosdata/jdbc/AbstractDatabaseMetaData.java   | 7 +++----
 .../java/com/taosdata/jdbc/TSDBDatabaseMetaDataTest.java   | 5 -----
 2 files changed, 3 insertions(+), 9 deletions(-)

diff --git a/src/connector/jdbc/src/main/java/com/taosdata/jdbc/AbstractDatabaseMetaData.java b/src/connector/jdbc/src/main/java/com/taosdata/jdbc/AbstractDatabaseMetaData.java
index 917f2aead9..ac5f0a747e 100644
--- a/src/connector/jdbc/src/main/java/com/taosdata/jdbc/AbstractDatabaseMetaData.java
+++ b/src/connector/jdbc/src/main/java/com/taosdata/jdbc/AbstractDatabaseMetaData.java
@@ -493,11 +493,10 @@ public abstract class AbstractDatabaseMetaData implements DatabaseMetaData, Wrap
         return null;
     }
 
-    public abstract ResultSet getTables(String catalog, String schemaPattern, String tableNamePattern, String[] types)
-            throws SQLException;
+    public abstract ResultSet getTables(String catalog, String schemaPattern, String tableNamePattern, String[] types) throws SQLException;
 
     public ResultSet getSchemas() throws SQLException {
-        return null;
+        return getEmptyResultSet();
     }
 
     public abstract ResultSet getCatalogs() throws SQLException;
@@ -753,7 +752,7 @@ public abstract class AbstractDatabaseMetaData implements DatabaseMetaData, Wrap
     }
 
     public ResultSet getSchemas(String catalog, String schemaPattern) throws SQLException {
-        return null;
+        return getEmptyResultSet();
     }
 
     public boolean supportsStoredFunctionsUsingCallSyntax() throws SQLException {
diff --git a/src/connector/jdbc/src/test/java/com/taosdata/jdbc/TSDBDatabaseMetaDataTest.java b/src/connector/jdbc/src/test/java/com/taosdata/jdbc/TSDBDatabaseMetaDataTest.java
index 77223b40fa..94e21a721c 100644
--- a/src/connector/jdbc/src/test/java/com/taosdata/jdbc/TSDBDatabaseMetaDataTest.java
+++ b/src/connector/jdbc/src/test/java/com/taosdata/jdbc/TSDBDatabaseMetaDataTest.java
@@ -914,11 +914,6 @@ public class TSDBDatabaseMetaDataTest {
         Assert.assertNull(metaData.getRowIdLifetime());
     }
 
-    @Test
-    public void testGetSchemas() throws SQLException {
-        Assert.assertNull(metaData.getSchemas());
-    }
-
     @Test
     public void supportsStoredFunctionsUsingCallSyntax() throws SQLException {
         Assert.assertFalse(metaData.supportsStoredFunctionsUsingCallSyntax());
-- 
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