-
Notifications
You must be signed in to change notification settings - Fork 14
/
CriteriaParameterFiller.java
74 lines (67 loc) · 2.98 KB
/
CriteriaParameterFiller.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
65
66
67
68
69
70
71
72
73
74
/**
* Copyright (C) 2022 Czech Technical University in Prague
*
* This program is free software: you can redistribute it and/or modify it under
* the terms of the GNU General Public License as published by the Free Software
* Foundation, either version 3 of the License, or (at your option) any
* later version.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
* FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
* details. You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package cz.cvut.kbss.jopa.query.criteria;
import cz.cvut.kbss.jopa.model.TypedQueryImpl;
import cz.cvut.kbss.jopa.model.query.criteria.ParameterExpression;
import cz.cvut.kbss.jopa.query.criteria.expressions.ExpressionLiteralImpl;
import cz.cvut.kbss.jopa.query.criteria.expressions.ParameterExpressionImpl;
import java.util.HashMap;
public class CriteriaParameterFiller {
private final HashMap<String, ExpressionLiteralImpl> literalParameters;
private int counter;
public CriteriaParameterFiller() {
this.literalParameters = new HashMap<>();
this.counter = 0;
}
/**
* Register literal expression as query parameter and return generated name for query.
* @param parameter - literal expression
* @return String - generated name for query
*/
public String registerParameter(ExpressionLiteralImpl parameter){
String name = generateParameterName();
literalParameters.put(name, parameter);
return ":" + name;
}
/**
* Register parameter expression as query parameter. Return real name if exists, generated name otherwise.
* @param parameter - parameter expression
* @return String - real name for query if exists, generated name for query otherwise
*/
public String registerParameter(ParameterExpression parameter){
if (parameter.getName() == null){
String name = generateParameterName();
((ParameterExpressionImpl)parameter).setNameIfUnnamed(name);
}
return ":" + parameter.getName();
}
/**
* Sets value from literal expressions registreted as parameters to query parameters.
* @param query - TypedQuery fom setting parameters value
*/
public <T> void setValuesToRegisteredParameters(TypedQueryImpl<T> query) {
for(String name: literalParameters.keySet()){
ExpressionLiteralImpl<?> parameter = literalParameters.get(name);
if(parameter.getLanguageTag() != null){
query.setParameter(name, (String) literalParameters.get(name).getValue(), parameter.getLanguageTag());
} else {
query.setParameter(name, literalParameters.get(name).getValue());
}
}
}
private String generateParameterName(){
return "generatedName"+ this.counter++;
}
}