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
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
|
/**
* 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.drill.exec.planner.sql.parser;
import java.util.Collections;
import java.util.List;
import net.hydromatic.optiq.tools.Planner;
import org.apache.drill.exec.ops.QueryContext;
import org.apache.drill.exec.planner.sql.handlers.AbstractSqlHandler;
import org.apache.drill.exec.planner.sql.handlers.SqlHandlerConfig;
import org.apache.drill.exec.planner.sql.handlers.ViewHandler.DropView;
import org.eigenbase.relopt.hep.HepPlanner;
import org.eigenbase.sql.SqlCall;
import org.eigenbase.sql.SqlIdentifier;
import org.eigenbase.sql.SqlKind;
import org.eigenbase.sql.SqlLiteral;
import org.eigenbase.sql.SqlNode;
import org.eigenbase.sql.SqlOperator;
import org.eigenbase.sql.SqlSpecialOperator;
import org.eigenbase.sql.SqlWriter;
import org.eigenbase.sql.parser.SqlParserPos;
import com.google.common.collect.ImmutableList;
public class SqlDropView extends DrillSqlCall {
public static final SqlSpecialOperator OPERATOR = new SqlSpecialOperator("DROP_VIEW", SqlKind.OTHER) {
@Override
public SqlCall createCall(SqlLiteral functionQualifier, SqlParserPos pos, SqlNode... operands) {
return new SqlDropView(pos, (SqlIdentifier) operands[0]);
}
};
private SqlIdentifier viewName;
public SqlDropView(SqlParserPos pos, SqlIdentifier viewName) {
super(pos);
this.viewName = viewName;
}
@Override
public SqlOperator getOperator() {
return OPERATOR;
}
@Override
public List<SqlNode> getOperandList() {
return Collections.singletonList((SqlNode)viewName);
}
@Override
public void unparse(SqlWriter writer, int leftPrec, int rightPrec) {
writer.keyword("DROP");
writer.keyword("VIEW");
viewName.unparse(writer, leftPrec, rightPrec);
}
@Override
public AbstractSqlHandler getSqlHandler(SqlHandlerConfig config) {
return new DropView(config.getContext());
}
public List<String> getSchemaPath() {
if (viewName.isSimple()) {
return ImmutableList.of();
}
return viewName.names.subList(0, viewName.names.size()-1);
}
public String getName() {
if (viewName.isSimple()) {
return viewName.getSimple();
}
return viewName.names.get(viewName.names.size() - 1);
}
}
|
