add extendOutputFormat

Author: todd5167

rdb/rdb-sink/src/main/java/com/dtstack/flink/sql/sink/rdb/format/ExtendOutputFormat.java

@@ -0,0 +1,103 @@
+/*
+ * 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 com.dtstack.flink.sql.sink.rdb.format;
+
+import org.apache.commons.lang3.StringUtils;
+import org.apache.flink.shaded.guava18.com.google.common.collect.Maps;
+
+import java.sql.ResultSet;
+import java.sql.SQLException;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Map;
+
+/**
+ * Reason:
+ * Date: 2018/11/30
+ * Company: www.dtstack.com
+ *
+ * @author maqi
+ */
+public class ExtendOutputFormat extends RetractJDBCOutputFormat {
+
+
+    @Override
+    public boolean isReplaceInsertQuery() throws SQLException {
+        fillRealIndexes();
+        fillFullColumns();
+
+        if (!getRealIndexes().isEmpty()) {
+            for (List<String> value : getRealIndexes().values()) {
+                for (String fieldName : getDbSink().getFieldNames()) {
+                    if (value.contains(fieldName)) {
+                        return true;
+                    }
+                }
+            }
+        }
+        return false;
+    }
+
+    /**
+     * get db all index
+     *
+     * @throws SQLException
+     */
+    public void fillRealIndexes() throws SQLException {
+        Map<String, List<String>> map = Maps.newHashMap();
+        ResultSet rs = getDbConn().getMetaData().getIndexInfo(null, null, getTableName(), true, false);
+
+        while (rs.next()) {
+            String indexName = rs.getString("INDEX_NAME");
+            if (!map.containsKey(indexName)) {
+                map.put(indexName, new ArrayList<>());
+            }
+            String column_name = rs.getString("COLUMN_NAME");
+            if (StringUtils.isNotBlank(column_name)) {
+                column_name = column_name.toUpperCase();
+            }
+            map.get(indexName).add(column_name);
+        }
+
+        for (Map.Entry<String, List<String>> entry : map.entrySet()) {
+            String k = entry.getKey();
+            List<String> v = entry.getValue();
+            if (v != null && v.size() != 0 && v.get(0) != null) {
+                getRealIndexes().put(k, v);
+            }
+        }
+    }
+
+    /**
+     * get db all column name
+     *
+     * @throws SQLException
+     */
+    public void fillFullColumns() throws SQLException {
+        ResultSet rs = getDbConn().getMetaData().getColumns(null, null, getTableName(), null);
+        while (rs.next()) {
+            String columnName = rs.getString("COLUMN_NAME");
+            if (StringUtils.isNotBlank(columnName)) {
+                getFullField().add(columnName.toUpperCase());
+            }
+        }
+    }
+
+
+}