hunt.sql.ast.statement.SQLDropSequenceStatement source code

1 /*
2  * Copyright 2015-2018 HuntLabs.cn
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  *      http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 module hunt.sql.ast.statement.SQLDropSequenceStatement;
17 
18 import hunt.sql.ast.SQLName;
19 import hunt.sql.ast.SQLObject;
20 import hunt.sql.ast.SQLStatementImpl;
21 import hunt.sql.ast.expr.SQLPropertyExpr;
22 import hunt.sql.visitor.SQLASTVisitor;
23 import hunt.sql.ast.statement.SQLDropStatement;
24 
25 
26 import hunt.collection;
27 
28 public class SQLDropSequenceStatement : SQLStatementImpl , SQLDropStatement {
29 
30     private SQLName name;
31     private bool ifExists;
32     
33     public this() {
34         
35     }
36     
37     public this(string dbType) {
38         super (dbType);
39     }
40 
41     
42     override  protected void accept0(SQLASTVisitor visitor) {
43         if (visitor.visit(this)) {
44             acceptChild(visitor, name);
45         }
46         visitor.endVisit(this);
47     }
48 
49     override
50     public List!SQLObject getChildren() {
51         List!SQLObject children = new ArrayList!SQLObject();
52         if (name !is null) {
53             children.add(name);
54         }
55         return children;
56     }
57 
58     public SQLName getName() {
59         return name;
60     }
61 
62     public void setName(SQLName name) {
63         this.name = name;
64     }
65 
66     public bool isIfExists() {
67         return ifExists;
68     }
69 
70     public void setIfExists(bool ifExists) {
71         this.ifExists = ifExists;
72     }
73 
74     public string getSchema() {
75         SQLName name = getName();
76         if (name is null) {
77             return null;
78         }
79 
80         if (cast(SQLPropertyExpr)(name) !is null ) {
81             return (cast(SQLPropertyExpr) name).getOwnernName();
82         }
83 
84         return null;
85     }
86 }