forked from sqlancer/sqlancer
-
Notifications
You must be signed in to change notification settings - Fork 0
Expand file tree
/
Copy pathTiDBToStringVisitor.java
More file actions
185 lines (171 loc) · 5.1 KB
/
TiDBToStringVisitor.java
File metadata and controls
185 lines (171 loc) · 5.1 KB
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
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
package sqlancer.tidb.visitor;
import sqlancer.Randomly;
import sqlancer.common.visitor.ToStringVisitor;
import sqlancer.tidb.ast.TiDBAggregate;
import sqlancer.tidb.ast.TiDBCase;
import sqlancer.tidb.ast.TiDBCastOperation;
import sqlancer.tidb.ast.TiDBColumnReference;
import sqlancer.tidb.ast.TiDBConstant;
import sqlancer.tidb.ast.TiDBExpression;
import sqlancer.tidb.ast.TiDBFunctionCall;
import sqlancer.tidb.ast.TiDBJoin;
import sqlancer.tidb.ast.TiDBJoin.JoinType;
import sqlancer.tidb.ast.TiDBSelect;
import sqlancer.tidb.ast.TiDBTableReference;
import sqlancer.tidb.ast.TiDBText;
public class TiDBToStringVisitor extends ToStringVisitor<TiDBExpression> implements TiDBVisitor {
@Override
public void visitSpecific(TiDBExpression expr) {
TiDBVisitor.super.visit(expr);
}
@Override
public void visit(TiDBConstant c) {
sb.append(c.toString());
}
public String getString() {
return sb.toString();
}
@Override
public void visit(TiDBColumnReference c) {
if (c.getColumn().getTable() == null) {
sb.append(c.getColumn().getName());
} else {
sb.append(c.getColumn().getFullQualifiedName());
}
}
@Override
public void visit(TiDBTableReference expr) {
sb.append(expr.getTable().getName());
}
@Override
public void visit(TiDBSelect select) {
sb.append("SELECT ");
if (select.getHint() != null) {
sb.append("/*+ ");
visit(select.getHint());
sb.append("*/");
}
visit(select.getFetchColumns());
sb.append(" FROM ");
visit(select.getFromList());
if (!select.getFromList().isEmpty() && !select.getJoinList().isEmpty()) {
sb.append(", ");
}
if (!select.getJoinList().isEmpty()) {
visit(select.getJoinList());
}
if (select.getWhereClause() != null) {
sb.append(" WHERE ");
visit(select.getWhereClause());
}
if (!select.getGroupByExpressions().isEmpty()) {
sb.append(" GROUP BY ");
visit(select.getGroupByExpressions());
}
if (select.getHavingClause() != null) {
sb.append(" HAVING ");
visit(select.getHavingClause());
}
if (!select.getOrderByClauses().isEmpty()) {
sb.append(" ORDER BY ");
visit(select.getOrderByClauses());
}
}
@Override
public void visit(TiDBFunctionCall call) {
sb.append(call.getFunction());
sb.append("(");
visit(call.getArgs());
sb.append(")");
}
@Override
public void visit(TiDBJoin join) {
sb.append(" ");
visit(join.getLeftTable());
sb.append(" ");
switch (join.getJoinType()) {
case INNER:
sb.append("INNER ");
sb.append("JOIN ");
break;
case LEFT:
sb.append("LEFT ");
if (Randomly.getBoolean()) {
sb.append(" OUTER ");
}
sb.append("JOIN ");
break;
case RIGHT:
sb.append("RIGHT ");
if (Randomly.getBoolean()) {
sb.append(" OUTER ");
}
sb.append("JOIN ");
break;
case STRAIGHT:
sb.append("STRAIGHT_JOIN ");
break;
case NATURAL:
sb.append("NATURAL ");
switch (join.getNaturalJoinType()) {
case INNER:
break;
case LEFT:
sb.append("LEFT ");
break;
case RIGHT:
sb.append("RIGHT ");
break;
default:
throw new AssertionError();
}
sb.append("JOIN ");
break;
case CROSS:
sb.append("CROSS JOIN ");
break;
default:
throw new AssertionError();
}
visit(join.getRightTable());
if (join.getOnCondition() != null && join.getJoinType() != JoinType.NATURAL) {
sb.append(" ON ");
visit(join.getOnCondition());
}
}
@Override
public void visit(TiDBText text) {
sb.append(text.getText());
}
@Override
public void visit(TiDBAggregate aggr) {
sb.append(aggr.getFunction());
sb.append("(");
visit(aggr.getArgs());
sb.append(")");
}
@Override
public void visit(TiDBCastOperation cast) {
sb.append("CAST(");
visit(cast.getExpr());
sb.append(" AS ");
sb.append(cast.getType());
sb.append(")");
}
@Override
public void visit(TiDBCase op) {
sb.append("(CASE ");
visit(op.getSwitchCondition());
for (int i = 0; i < op.getConditions().size(); i++) {
sb.append(" WHEN ");
visit(op.getConditions().get(i));
sb.append(" THEN ");
visit(op.getExpressions().get(i));
}
if (op.getElseExpr() != null) {
sb.append(" ELSE ");
visit(op.getElseExpr());
}
sb.append(" END )");
}
}