Add support for updateExpire for expire days setting for table

- Add updateExpire method to TDClientApi interface
- Implement updateExpire method in TDClient class that calls /v3/table/update API
- Add comprehensive test for updateExpire functionality including error cases
- Method signature matches td-client-ruby and td-client-python implementations

Fixes #110

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <[email protected]>

Author: yuokada

src/main/java/com/treasuredata/client/TDClient.java

@@ -622,6 +622,18 @@ public void appendTableSchema(String databaseName, String tableName, List<TDColu
         doPost(buildUrl("/v3/table/append-schema", databaseName, tableName), Collections.emptyMap(), Optional.of(schemaJson), String.class);
     }
 
+    @Override
+    public void updateExpire(String databaseName, String tableName, int expireDays)
+    {
+        requireNonNull(databaseName, "databaseName is null");
+        requireNonNull(tableName, "tableName is null");
+
+        doPost(buildUrl("/v3/table/update", databaseName, tableName),
+                Collections.singletonMap("expire_days", Integer.toString(expireDays)),
+                TDUpdateTableResult.class
+        );
+    }
+
     @Override
     public String submit(TDJobRequest jobRequest)
             throws TDClientException

src/main/java/com/treasuredata/client/TDClientApi.java

@@ -224,6 +224,8 @@ public interface TDClientApi<ClientImpl>
 
     void appendTableSchema(String databaseName, String tableName, List<TDColumn> newSchema);
 
+    void updateExpire(String databaseName, String tableName, int expireDays);
+
     /**
      * Submit a new job request
      *

src/test/java/com/treasuredata/client/TestTDClient.java

@@ -939,6 +939,47 @@ public void tableOperation()
         }
     }
 
+    @Test
+    public void updateExpireTest()
+            throws Exception
+    {
+        String t = newTemporaryName("expire_test");
+
+        try {
+            client.deleteTableIfExists(SAMPLE_DB, t);
+            client.createTableIfNotExists(SAMPLE_DB, t);
+
+            // Test updating expire days
+            int expireDays = 30;
+            client.updateExpire(SAMPLE_DB, t, expireDays);
+
+            // Verify the expire days were updated
+            TDTable updatedTable = findTable(SAMPLE_DB, t).get();
+            assertEquals(Integer.toString(expireDays), updatedTable.getExpireDays());
+
+            // Test updating to different expire days
+            int newExpireDays = 60;
+            client.updateExpire(SAMPLE_DB, t, newExpireDays);
+
+            // Verify the expire days were updated again
+            updatedTable = findTable(SAMPLE_DB, t).get();
+            assertEquals(Integer.toString(newExpireDays), updatedTable.getExpireDays());
+
+            // Test error case - table doesn't exist
+            try {
+                client.updateExpire(SAMPLE_DB, "nonexistent_table", 30);
+                fail("should not reach here");
+            }
+            catch (TDClientHttpNotFoundException e) {
+                // OK
+                assertEquals(HttpStatus.NOT_FOUND_404, e.getStatusCode());
+            }
+        }
+        finally {
+            client.deleteTableIfExists(SAMPLE_DB, t);
+        }
+    }
+
     @Test
     public void createTableWithoutIdempotentKey()
             throws Exception