[GitHub] [shardingsphere] tuichenchuxin commented on a change in pull request #13129: fix show table status

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

tuichenchuxin commented on a change in pull request #13129:
URL: https://github.com/apache/shardingsphere/pull/13129#discussion_r731664092



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File path: shardingsphere-features/shardingsphere-sharding/shardingsphere-sharding-core/src/main/java/org/apache/shardingsphere/sharding/merge/dal/show/ShowTableStatusMergedResult.java
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@@ -0,0 +1,84 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.shardingsphere.sharding.merge.dal.show;
+
+import org.apache.shardingsphere.infra.binder.statement.SQLStatementContext;
+import org.apache.shardingsphere.infra.executor.sql.execute.result.query.QueryResult;
+import org.apache.shardingsphere.infra.merge.result.impl.memory.MemoryMergedResult;
+import org.apache.shardingsphere.infra.merge.result.impl.memory.MemoryQueryResultRow;
+import org.apache.shardingsphere.infra.metadata.schema.ShardingSphereSchema;
+import org.apache.shardingsphere.sharding.rule.ShardingRule;
+import org.apache.shardingsphere.sharding.rule.TableRule;
+
+import java.math.BigInteger;
+import java.sql.SQLException;
+import java.util.LinkedHashMap;
+import java.util.LinkedList;
+import java.util.List;
+import java.util.Map;
+import java.util.Optional;
+
+/**
+ * Merged result for show table status.
+ */
+public final class ShowTableStatusMergedResult extends MemoryMergedResult<ShardingRule> {
+    
+    public ShowTableStatusMergedResult(final ShardingRule shardingRule, final SQLStatementContext sqlStatementContext,
+                                       final ShardingSphereSchema schema, final List<QueryResult> queryResults) throws SQLException {
+        super(shardingRule, schema, sqlStatementContext, queryResults);
+    }
+    
+    @Override
+    protected List<MemoryQueryResultRow> init(final ShardingRule shardingRule, final ShardingSphereSchema schema,
+                                              final SQLStatementContext sqlStatementContext, final List<QueryResult> queryResults) throws SQLException {
+        Map<String, MemoryQueryResultRow> memoryQueryResultRowMap = new LinkedHashMap<>();
+        for (QueryResult each : queryResults) {
+            while (each.next()) {
+                MemoryQueryResultRow memoryResultSetRow = new MemoryQueryResultRow(each);
+                String actualTableName = memoryResultSetRow.getCell(1).toString();
+                Optional<TableRule> tableRule = shardingRule.findTableRuleByActualTable(actualTableName);
+                tableRule.ifPresent(rule -> memoryResultSetRow.setCell(1, rule.getLogicTable()));
+                String tableName = memoryResultSetRow.getCell(1).toString();
+                if (memoryQueryResultRowMap.containsKey(tableName)) {
+                    merge(memoryQueryResultRowMap.get(tableName), memoryResultSetRow);
+                } else {
+                    memoryQueryResultRowMap.put(tableName, memoryResultSetRow);
+                }
+                

Review comment:
       OK, thank you




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