|
1
|
package eu.dnetlib.openaire.dsm.dao;
|
|
2
|
|
|
3
|
import java.util.List;
|
|
4
|
import java.util.Map.Entry;
|
|
5
|
import javax.persistence.criteria.*;
|
|
6
|
|
|
7
|
import eu.dnetlib.enabling.datasources.common.DsmRuntimeException;
|
|
8
|
import eu.dnetlib.openaire.dsm.domain.FilterName;
|
|
9
|
import eu.dnetlib.openaire.dsm.domain.RequestFilter;
|
|
10
|
import eu.dnetlib.openaire.dsm.domain.RequestSort;
|
|
11
|
import eu.dnetlib.openaire.dsm.domain.RequestSortOrder;
|
|
12
|
import eu.dnetlib.openaire.dsm.domain.db.DatasourceApiDbEntry;
|
|
13
|
import eu.dnetlib.openaire.dsm.domain.db.DatasourceDbEntry;
|
|
14
|
import org.apache.commons.lang3.BooleanUtils;
|
|
15
|
import org.apache.commons.lang3.StringUtils;
|
|
16
|
import org.apache.commons.logging.Log;
|
|
17
|
import org.apache.commons.logging.LogFactory;
|
|
18
|
import org.springframework.data.jpa.domain.Specification;
|
|
19
|
|
|
20
|
public class DatasourceSpecs {
|
|
21
|
|
|
22
|
private static final Log log = LogFactory.getLog(DatasourceSpecs.class);
|
|
23
|
|
|
24
|
public static final String WILDCARD = "%";
|
|
25
|
|
|
26
|
public static Specification<DatasourceDbEntry> dsSpec(final RequestSort requestSortBy, final RequestSortOrder order, final RequestFilter requestFilter) {
|
|
27
|
return (ds, query, cb) -> {
|
|
28
|
final Predicate p = cb.conjunction();
|
|
29
|
if (requestFilter != null) {
|
|
30
|
final List<Expression<Boolean>> expressions = p.getExpressions();
|
|
31
|
requestFilter.entrySet().stream()
|
|
32
|
.forEach(e -> {
|
|
33
|
switch (FilterName.type(e.getKey())) {
|
|
34
|
|
|
35
|
case exact:
|
|
36
|
expressions.add(exactSearch(ds, cb, e));
|
|
37
|
|
|
38
|
break;
|
|
39
|
case search:
|
|
40
|
expressions.add(likeSearch(ds, cb, e));
|
|
41
|
|
|
42
|
break;
|
|
43
|
case searchOrgs:
|
|
44
|
// search by case insensitive organization's country
|
|
45
|
expressions.add(
|
|
46
|
cb.equal(
|
|
47
|
cb.lower(
|
|
48
|
ds.join("organizations").get(FilterName.country.name())),
|
|
49
|
getValue(e)));
|
|
50
|
break;
|
|
51
|
}
|
|
52
|
});
|
|
53
|
}
|
|
54
|
if (requestSortBy != null) {
|
|
55
|
if (order != null) {
|
|
56
|
final Path<Object> orderField = ds.get(requestSortBy.name());
|
|
57
|
switch (order) {
|
|
58
|
case ASCENDING:
|
|
59
|
query.orderBy(cb.asc(orderField));
|
|
60
|
break;
|
|
61
|
case DESCENDING:
|
|
62
|
query.orderBy(cb.desc(orderField));
|
|
63
|
break;
|
|
64
|
}
|
|
65
|
}
|
|
66
|
}
|
|
67
|
query.distinct(true);
|
|
68
|
|
|
69
|
return p;
|
|
70
|
};
|
|
71
|
}
|
|
72
|
|
|
73
|
public static Specification<DatasourceApiDbEntry> apiSpec(final RequestFilter requestFilter) {
|
|
74
|
return (api, query, cb) -> {
|
|
75
|
final Predicate p = cb.conjunction();
|
|
76
|
if (requestFilter != null) {
|
|
77
|
final List<Expression<Boolean>> expressions = p.getExpressions();
|
|
78
|
requestFilter.entrySet().stream()
|
|
79
|
.forEach(e -> {
|
|
80
|
switch (FilterName.type(e.getKey())) {
|
|
81
|
|
|
82
|
case exact:
|
|
83
|
expressions.add(exactSearch(api, cb, e));
|
|
84
|
break;
|
|
85
|
case search:
|
|
86
|
|
|
87
|
expressions.add(likeSearch(api, cb, e));
|
|
88
|
break;
|
|
89
|
case searchOrgs:
|
|
90
|
throw new DsmRuntimeException("not implemented");
|
|
91
|
}
|
|
92
|
});
|
|
93
|
}
|
|
94
|
query.distinct(true);
|
|
95
|
return p;
|
|
96
|
};
|
|
97
|
}
|
|
98
|
|
|
99
|
// HELPERS
|
|
100
|
|
|
101
|
// substring, case insensitive, like based search
|
|
102
|
private static Predicate likeSearch(final Root<?> r, final CriteriaBuilder cb, final Entry<FilterName, Object> e) {
|
|
103
|
return cb.like(
|
|
104
|
cb.lower(
|
|
105
|
r.get(e.getKey().name())),
|
|
106
|
WILDCARD + getValue(e) + WILDCARD);
|
|
107
|
}
|
|
108
|
|
|
109
|
// search by ID, managed. exact match
|
|
110
|
private static Predicate exactSearch(final Root<?> r, final CriteriaBuilder cb, final Entry<FilterName, Object> e) {
|
|
111
|
return cb.equal(r.get(e.getKey().name()), getValue(e));
|
|
112
|
}
|
|
113
|
|
|
114
|
private static Object getValue(final Entry<FilterName, Object> e) {
|
|
115
|
if (e.getValue() instanceof String) {
|
|
116
|
final String s = ((String) e.getValue());
|
|
117
|
Boolean b = BooleanUtils.toBooleanObject(s);
|
|
118
|
if (b != null) {
|
|
119
|
return b;
|
|
120
|
}
|
|
121
|
return e.getKey().equals(FilterName.id) ? s : StringUtils.lowerCase(s);
|
|
122
|
}
|
|
123
|
if (e.getValue() instanceof Boolean) {
|
|
124
|
return e.getValue();
|
|
125
|
}
|
|
126
|
|
|
127
|
return e.getValue();
|
|
128
|
}
|
|
129
|
|
|
130
|
}
|