EventUserAccountSaldoPredicate.java
2.44 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
/*
* Copyright Codecrew Ry
*
* All rights reserved.
*
* This license applies to any software containing a notice placed by the
* copyright holder. Such software is herein referred to as the Software.
* This license covers modification, distribution and use of the Software.
*
* Any distribution and use in source and binary forms, with or without
* modification is not permitted without explicit written permission from the
* copyright owner.
*
* A non-exclusive royalty-free right is granted to the copyright owner of the
* Software to use, modify and distribute all modifications to the Software in
* future versions of the Software.
*
*/
package fi.codecrew.moya.facade.callbacks;
import java.math.BigDecimal;
import java.util.List;
import javax.persistence.criteria.CriteriaBuilder;
import javax.persistence.criteria.CriteriaQuery;
import javax.persistence.criteria.Path;
import javax.persistence.criteria.Predicate;
import javax.persistence.criteria.Root;
import javax.persistence.criteria.Subquery;
import fi.codecrew.moya.enums.DatabaseValueCompare;
import fi.codecrew.moya.model.AccountEvent;
import fi.codecrew.moya.model.AccountEvent_;
import fi.codecrew.moya.model.EventUser;
import fi.codecrew.moya.utilities.jpa.FacadeCallback;
public class EventUserAccountSaldoPredicate implements FacadeCallback<EventUser> {
private final DatabaseValueCompare compare;
private final BigDecimal saldo;
public EventUserAccountSaldoPredicate(BigDecimal accountSaldo, DatabaseValueCompare accountSaldoCompare) {
saldo = accountSaldo;
compare = accountSaldoCompare;
}
@Override
public void exec(CriteriaBuilder cb, CriteriaQuery<?> cq, Path<EventUser> root, List<Predicate> predicates, boolean isFullQuery) {
Subquery<BigDecimal> subq = cq.subquery(BigDecimal.class);
Root<AccountEvent> acRoot = subq.from(AccountEvent.class);
subq.where(cb.equal(acRoot.get(AccountEvent_.user), root));
subq.select(cb.sum(cb.prod(acRoot.get(AccountEvent_.unitPrice), acRoot.get(AccountEvent_.quantity))));
Predicate pred = null;
switch (compare) {
case EQ:
pred = cb.equal(subq, saldo);
break;
case GE:
pred = cb.ge(subq, saldo);
break;
case GT:
pred = cb.gt(subq, saldo);
break;
case LE:
pred = cb.le(subq, saldo);
break;
case LT:
pred = cb.lt(subq, saldo);
break;
case NE:
pred = cb.notEqual(subq, saldo);
break;
case NONE:
default:
break;
}
if (pred != null)
{
predicates.add(pred);
}
}
}