1 /*
2 * Licensed to the Apache Software Foundation (ASF) under one or more
3 * contributor license agreements. See the NOTICE file distributed with
4 * this work for additional information regarding copyright ownership.
5 * The ASF licenses this file to You under the Apache License, Version 2.0
6 * (the "License"); you may not use this file except in compliance with
7 * the License. You may obtain a copy of the License at
8 *
9 * http://www.apache.org/licenses/LICENSE-2.0
10 *
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
16 */
17
18 package org.apache.shardingsphere.sql.parser.sql.common.statement.dml;
19
20 import lombok.Getter;
21 import lombok.Setter;
22 import org.apache.shardingsphere.sql.parser.sql.common.segment.dml.expr.ExpressionWithParamsSegment;
23 import org.apache.shardingsphere.sql.parser.sql.common.segment.generic.table.TableSegment;
24 import org.apache.shardingsphere.sql.parser.sql.common.statement.AbstractSQLStatement;
25
26 import java.util.Optional;
27
28 /**
29 * Merge statement.
30 */
31 @Getter
32 @Setter
33 public abstract class MergeStatement extends AbstractSQLStatement implements DMLStatement {
34
35 private TableSegment target;
36
37 private TableSegment source;
38
39 private ExpressionWithParamsSegment expression;
40
41 private UpdateStatement update;
42
43 private InsertStatement insert;
44
45 /**
46 * Get update statement.
47 *
48 * @return update statement
49 */
50 public Optional<UpdateStatement> getUpdate() {
51 return Optional.ofNullable(update);
52 }
53
54 /**
55 * Get insert statement.
56 *
57 * @return insert statement
58 */
59 public Optional<InsertStatement> getInsert() {
60 return Optional.ofNullable(insert);
61 }
62 }