blob: 95f826a91fd22174265e8a828f4c7f09b3fa87be (
plain)
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
|
package pl.edu.mimuw.cloudatlas.model;
import java.io.ByteArrayInputStream;
import pl.edu.mimuw.cloudatlas.interpreter.query.Absyn.Program;
import pl.edu.mimuw.cloudatlas.interpreter.query.parser;
import pl.edu.mimuw.cloudatlas.interpreter.query.Yylex;
import pl.edu.mimuw.cloudatlas.model.Value;
import pl.edu.mimuw.cloudatlas.querysigner.QueryData;
/**
* A class that holds a CloudAtlas query.
*/
public class ValueQuery extends Value {
// Original source code
private String code;
// Parsed query
private Program query;
// Query signature
private byte[] signature;
// Query signing timestamp
private long timestamp;
// Query installation status
private boolean installed;
/**
* Constructs a new <code>ValueQuery</code> object.
*
* @param query the code of the query
*/
public ValueQuery(String query) throws Exception {
this.code = query;
if (!query.isEmpty()) {
Yylex lex = new Yylex(new ByteArrayInputStream(query.getBytes()));
this.query = (new parser(lex)).pProgram();
}
this.signature = null;
this.timestamp = System.currentTimeMillis();
this.installed = true;
}
public ValueQuery(String query, byte[] querySignature) throws Exception {
this.code = query;
if (!query.isEmpty()) {
Yylex lex = new Yylex(new ByteArrayInputStream(query.getBytes()));
this.query = (new parser(lex)).pProgram();
}
this.signature = querySignature;
this.timestamp = System.currentTimeMillis();
this.installed = true;
}
public ValueQuery(QueryData queryData) throws Exception {
this.code = queryData.getCode();
if (!queryData.getCode().isEmpty()) {
Yylex lex = new Yylex(new ByteArrayInputStream(queryData.getCode().getBytes()));
this.query = (new parser(lex)).pProgram();
}
this.signature = queryData.getSignature();
this.timestamp = System.currentTimeMillis();
this.installed = queryData.isInstalled();
}
public ValueQuery(String query, long timestamp) throws Exception {
this.code = query;
if (!query.isEmpty()) {
Yylex lex = new Yylex(new ByteArrayInputStream(query.getBytes()));
this.query = (new parser(lex)).pProgram();
}
this.signature = null;
this.timestamp = timestamp;
this.installed = true;
}
private ValueQuery() {
this.code = null;
this.query = null;
this.signature = null;
this.timestamp = System.currentTimeMillis();
this.installed = true;
}
public String getCode() { return code; }
public Program getQuery() {
return query;
}
public byte[] getSignature() { return signature; }
public long getTimestamp() { return timestamp; }
public void setTimestamp(long timestamp) { this.timestamp = timestamp; }
public boolean isInstalled() { return installed; }
public void setInstalled(boolean installed) { this.installed = installed; }
@Override
public Type getType() {
return TypePrimitive.QUERY;
}
@Override
public boolean isNull() {
return query == null || code == null;
}
public Value isEqual(Value value) {
sameTypesOrThrow(value, Operation.EQUAL);
if(isNull() && value.isNull())
return new ValueBoolean(true);
else if(isNull() || value.isNull())
return new ValueBoolean(false);
return new ValueBoolean(code.equals(((ValueQuery)value).code));
}
@Override
public Value getDefaultValue() {
return new ValueQuery();
}
@Override
public Value convertTo(Type type) {
switch(type.getPrimaryType()) {
case QUERY:
return this;
case STRING:
return isNull() ? ValueString.NULL_STRING : new ValueString(code);
default:
throw new UnsupportedConversionException(getType(), type);
}
}
}
|