-
Notifications
You must be signed in to change notification settings - Fork 6.6k
/
ShadowInsertValueParameterRewriter.java
64 lines (57 loc) · 3.19 KB
/
ShadowInsertValueParameterRewriter.java
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
/*
* 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.shadow.rewrite.parameter.impl;
import org.apache.shardingsphere.infra.rewrite.parameter.builder.ParameterBuilder;
import org.apache.shardingsphere.infra.rewrite.parameter.builder.impl.GroupedParameterBuilder;
import org.apache.shardingsphere.infra.rewrite.parameter.builder.impl.StandardParameterBuilder;
import org.apache.shardingsphere.shadow.rewrite.parameter.ShadowParameterRewriter;
import org.apache.shardingsphere.sql.parser.binder.statement.SQLStatementContext;
import org.apache.shardingsphere.sql.parser.binder.statement.dml.InsertStatementContext;
import java.util.ArrayList;
import java.util.List;
/**
* Insert value parameter rewriter for shadow.
*/
public final class ShadowInsertValueParameterRewriter extends ShadowParameterRewriter<InsertStatementContext> {
@Override
protected boolean isNeedRewriteForShadow(final SQLStatementContext sqlStatementContext) {
return sqlStatementContext instanceof InsertStatementContext && ((InsertStatementContext) sqlStatementContext).getInsertColumnNames().contains(getShadowRule().getColumn());
}
@Override
public void rewrite(final ParameterBuilder parameterBuilder, final InsertStatementContext insertStatementContext, final List<Object> parameters) {
String columnName = getShadowRule().getColumn();
int columnIndex = getColumnIndex((GroupedParameterBuilder) parameterBuilder, insertStatementContext, columnName);
int count = 0;
for (List<Object> each : insertStatementContext.getGroupedParameters()) {
if (!each.isEmpty()) {
StandardParameterBuilder standardParameterBuilder = ((GroupedParameterBuilder) parameterBuilder).getParameterBuilders().get(count);
standardParameterBuilder.addRemovedParameters(columnIndex);
}
count++;
}
}
private int getColumnIndex(final GroupedParameterBuilder parameterBuilder, final InsertStatementContext insertStatementContext, final String shadowColumnName) {
List<String> columnNames;
if (parameterBuilder.getDerivedColumnName().isPresent()) {
columnNames = new ArrayList<>(insertStatementContext.getColumnNames());
columnNames.remove(parameterBuilder.getDerivedColumnName().get());
} else {
columnNames = insertStatementContext.getColumnNames();
}
return columnNames.indexOf(shadowColumnName);
}
}