SNOW-1003959: Implement toString() in SnowflakePreparedStatementV1 (#…

…1604)

Invoking the PreparedStatement's toString() method will now return the actual SQL query and
query ID if available rahter than the object's hashCode. This is helpful when using features
in frameworks like Spring Boot to monitor and log information about slow running queries.

src/main/java/net/snowflake/client/jdbc/SnowflakePreparedStatementV1.java

@@ -966,4 +966,8 @@ public void resultSetMetadataHandler(SFBaseResultSet resultSet) throws SQLExcept
       alreadyDescribed = true;
     }
   }
+
+  public String toString() {
+    return (this.sql != null) ? this.sql + " - Query ID: " + this.getQueryID() : super.toString();
+  }
 }

src/test/java/net/snowflake/client/jdbc/PreparedStatement2LatestIT.java

@@ -354,4 +354,24 @@ public void testConsecutiveBatchInsertError() throws SQLException {
       assertTrue(prepStatement.unwrap(SnowflakePreparedStatementV1.class).isArrayBindSupported());
     }
   }
+
+  @Test
+  public void testToString() throws SQLException {
+    try (Connection connection = init()) {
+      PreparedStatement prepStatement =
+          connection.prepareStatement("select current_version() --testing toString()");
+
+      // Query ID is going to be null since we didn't execute the statement yet
+      assertEquals(
+          "select current_version() --testing toString() - Query ID: null",
+          prepStatement.toString());
+
+      prepStatement.executeQuery();
+      assertTrue(
+          prepStatement
+              .toString()
+              .matches(
+                  "select current_version\\(\\) --testing toString\\(\\) - Query ID: (\\d|\\w)+(-(\\d|\\w)+)+$"));
+    }
+  }
 }