|
1
|
package eu.dnetlib.dli.parser;
|
|
2
|
|
|
3
|
import java.io.ByteArrayInputStream;
|
|
4
|
import java.util.List;
|
|
5
|
import java.util.Stack;
|
|
6
|
import javax.xml.stream.XMLInputFactory;
|
|
7
|
import javax.xml.stream.XMLStreamConstants;
|
|
8
|
import javax.xml.stream.XMLStreamReader;
|
|
9
|
|
|
10
|
import com.google.common.collect.Lists;
|
|
11
|
import eu.dnetlib.dli.resolver.model.*;
|
|
12
|
import eu.dnetlib.pid.resolver.model.ObjectType;
|
|
13
|
import org.apache.commons.lang3.StringUtils;
|
|
14
|
import org.apache.commons.logging.Log;
|
|
15
|
import org.apache.commons.logging.LogFactory;
|
|
16
|
|
|
17
|
/**
|
|
18
|
* This method outperforms SimpleRecordParser by a vast amount, especially since we are just getting stuff in the header.
|
|
19
|
*
|
|
20
|
* @author sandro
|
|
21
|
*/
|
|
22
|
public class DLIRecordParser {
|
|
23
|
|
|
24
|
private static final Log log = LogFactory.getLog(DLIRecordParser.class);
|
|
25
|
|
|
26
|
public DLIResolvedObject parseRecord(final String record) {
|
|
27
|
try {
|
|
28
|
XMLInputFactory factory = XMLInputFactory.newInstance();
|
|
29
|
XMLStreamReader parser = factory.createXMLStreamReader(new ByteArrayInputStream(record.getBytes()));
|
|
30
|
|
|
31
|
DLIResolvedObject object = new DLIResolvedObject();
|
|
32
|
Stack<String> elementStack = new Stack<>();
|
|
33
|
elementStack.push("/");
|
|
34
|
List<String> titles = Lists.newArrayList();
|
|
35
|
List<String> authors = Lists.newArrayList();
|
|
36
|
List<String> relatedAuthors = null;
|
|
37
|
boolean insideRelation = false;
|
|
38
|
DLIObjectRelation currentRelation = null;
|
|
39
|
DLIResolvedObject currentExtraInfo = null;
|
|
40
|
List<DLIObjectRelation> relations = Lists.newArrayList();
|
|
41
|
List<DLIObjectProvenance> datasources = Lists.newArrayList();
|
|
42
|
|
|
43
|
while (parser.hasNext()) {
|
|
44
|
int event = parser.next();
|
|
45
|
if (event == XMLStreamConstants.END_ELEMENT) {
|
|
46
|
final String localName = parser.getLocalName();
|
|
47
|
|
|
48
|
// CLOSE TAG relation
|
|
49
|
|
|
50
|
if (localName.equals("relatedauthors")) {
|
|
51
|
if (currentExtraInfo != null && relatedAuthors != null) {
|
|
52
|
currentExtraInfo.setAuthors(relatedAuthors);
|
|
53
|
relatedAuthors.clear();
|
|
54
|
relatedAuthors = null;
|
|
55
|
}
|
|
56
|
}
|
|
57
|
if (localName.equals("relation")) {
|
|
58
|
log.debug("found closed tag relation");
|
|
59
|
insideRelation = false;
|
|
60
|
if (currentRelation != null) {
|
|
61
|
if (currentExtraInfo != null) {
|
|
62
|
currentExtraInfo.setPid(currentRelation.getTargetPID().getId());
|
|
63
|
currentExtraInfo.setPidType(currentRelation.getTargetPID().getType());
|
|
64
|
currentExtraInfo.setDatasourceProvenance(object.getDatasourceProvenance());
|
|
65
|
currentRelation.setExtraInfo(currentExtraInfo);
|
|
66
|
}
|
|
67
|
if (object.getPid() == null || object.getPid().isEmpty()) {
|
|
68
|
log.error("ERROR the DOI is empty");
|
|
69
|
}
|
|
70
|
currentRelation.setSourcePid(object.getPid());
|
|
71
|
if (!StringUtils.isBlank(object.getPid()) && !StringUtils.isBlank(object.getPidType())) {
|
|
72
|
currentRelation.setSourceRecordId(object.getIdentifier());
|
|
73
|
}
|
|
74
|
|
|
75
|
log.debug("Adding new relation to the object");
|
|
76
|
relations.add(currentRelation);
|
|
77
|
currentRelation = null;
|
|
78
|
}
|
|
79
|
}
|
|
80
|
elementStack.pop();
|
|
81
|
} else if (event == XMLStreamConstants.START_ELEMENT) {
|
|
82
|
final String localName = parser.getLocalName();
|
|
83
|
elementStack.push(localName);
|
|
84
|
|
|
85
|
// LOCAL IDENTIFIER TAG
|
|
86
|
if ("localIdentifier".equals(localName)) {
|
|
87
|
log.debug("found open tag localIdentifier");
|
|
88
|
String type = "";
|
|
89
|
for (int i = 0; i < parser.getAttributeCount(); i++) {
|
|
90
|
if (parser.getAttributeLocalName(i).equals("type")) {
|
|
91
|
type = parser.getAttributeValue(i);
|
|
92
|
break;
|
|
93
|
}
|
|
94
|
}
|
|
95
|
parser.next();
|
|
96
|
if (parser.hasText()) {
|
|
97
|
object.setPid(parser.getText().trim());
|
|
98
|
object.setPidType(type);
|
|
99
|
}
|
|
100
|
// TITLE TAG
|
|
101
|
} else if ("title".equals(localName)) {
|
|
102
|
log.debug("found open tag title");
|
|
103
|
parser.next();
|
|
104
|
if (parser.hasText()) {
|
|
105
|
titles.add(parser.getText().trim());
|
|
106
|
}
|
|
107
|
// DATASOURCE PROVENANCE TAG
|
|
108
|
} else if ("datasource".equals(localName)) {
|
|
109
|
|
|
110
|
String completionStatus = "";
|
|
111
|
String provisionMode = "";
|
|
112
|
log.debug("found open tag datasources");
|
|
113
|
for (int i = 0; i < parser.getAttributeCount(); i++) {
|
|
114
|
if (parser.getAttributeLocalName(i).equals("completionStatus")) {
|
|
115
|
completionStatus = parser.getAttributeValue(i);
|
|
116
|
} else if (parser.getAttributeLocalName(i).equals("provisionMode")) {
|
|
117
|
provisionMode = parser.getAttributeValue(i);
|
|
118
|
}
|
|
119
|
}
|
|
120
|
parser.next();
|
|
121
|
if (parser.hasText()) {
|
|
122
|
String dt = parser.getText().trim();
|
|
123
|
|
|
124
|
DLIObjectProvenance pr = new DLIObjectProvenance(dt, ObjectProvisionMode.fromString(provisionMode).toString(),
|
|
125
|
CompletionStatus.fromString(completionStatus).toString(), null, null, true);
|
|
126
|
datasources.add(pr);
|
|
127
|
}
|
|
128
|
// INSIDE the tag Person
|
|
129
|
} else if ("completionStatus".equals(localName)) {
|
|
130
|
log.debug("found open tag completionStatus");
|
|
131
|
parser.next();
|
|
132
|
if (parser.hasText()) {
|
|
133
|
object.setCompletionStatus(CompletionStatus.fromString(parser.getText().trim()).toString());
|
|
134
|
}
|
|
135
|
} else if ("fullname".equals(localName)) {
|
|
136
|
log.debug("found open tag fullname");
|
|
137
|
parser.next();
|
|
138
|
if (parser.hasText()) {
|
|
139
|
authors.add(parser.getText().trim());
|
|
140
|
}
|
|
141
|
|
|
142
|
// INSIDE THE TAG RELATION
|
|
143
|
} else if ("relation".equals(localName)) {
|
|
144
|
log.debug("found open tag relation");
|
|
145
|
insideRelation = true;
|
|
146
|
currentRelation = new DLIObjectRelation();
|
|
147
|
currentExtraInfo = new DLIResolvedObject();
|
|
148
|
} else if ("pid".equals(localName) && insideRelation) {
|
|
149
|
PID currentPid = new PID();
|
|
150
|
for (int i = 0; i < parser.getAttributeCount(); i++) {
|
|
151
|
if (parser.getAttributeLocalName(i).equals("type")) {
|
|
152
|
currentPid.setType(parser.getAttributeValue(i));
|
|
153
|
break;
|
|
154
|
}
|
|
155
|
}
|
|
156
|
|
|
157
|
try {
|
|
158
|
parser.next();
|
|
159
|
if (parser.hasText()) {
|
|
160
|
currentPid.setId(parser.getText().trim());
|
|
161
|
currentRelation.setTargetPID(currentPid);
|
|
162
|
}
|
|
163
|
|
|
164
|
} catch (Exception e) {
|
|
165
|
log.error("skipped doi");
|
|
166
|
}
|
|
167
|
// INSIDE THE TAG TYPEOFRELATION
|
|
168
|
} else if ("typeOfRelation".equals(localName) && insideRelation) {
|
|
169
|
log.debug("found open tag typeOfRelation");
|
|
170
|
parser.next();
|
|
171
|
if (parser.hasText()) {
|
|
172
|
currentRelation.setRelationSemantics(parser.getText().trim());
|
|
173
|
}
|
|
174
|
// INSIDE THE TAG OBJECT TYPE
|
|
175
|
} else if ("relatedtype".equals(localName) && insideRelation) {
|
|
176
|
log.debug("found open tag relatedtype");
|
|
177
|
parser.next();
|
|
178
|
if (parser.hasText()) {
|
|
179
|
currentExtraInfo.setType(ObjectType.valueOf(parser.getText().trim()));
|
|
180
|
}
|
|
181
|
} else if ("relatedtitle".equals(localName) && insideRelation) {
|
|
182
|
log.debug("found open tag relatedtype");
|
|
183
|
parser.next();
|
|
184
|
if (parser.hasText()) {
|
|
185
|
currentExtraInfo.setTitles(Lists.newArrayList(parser.getText().trim()));
|
|
186
|
}
|
|
187
|
} else if ("relatedauthor".equals(localName) && insideRelation) {
|
|
188
|
log.debug("found open tag relatedtype");
|
|
189
|
parser.next();
|
|
190
|
if (parser.hasText()) {
|
|
191
|
if (relatedAuthors == null)
|
|
192
|
relatedAuthors = Lists.newArrayList();
|
|
193
|
relatedAuthors.add(parser.getText().trim());
|
|
194
|
}
|
|
195
|
} else if ("objectType".equals(localName)) {
|
|
196
|
log.debug("found open tag objectType");
|
|
197
|
parser.next();
|
|
198
|
if (parser.hasText()) {
|
|
199
|
object.setType(ObjectType.valueOf(parser.getText().trim()));
|
|
200
|
}
|
|
201
|
|
|
202
|
// INSIDE THE TAG DATE
|
|
203
|
} else if ("date".equals(localName)) {
|
|
204
|
log.debug("found open tag date");
|
|
205
|
parser.next();
|
|
206
|
if (parser.hasText()) {
|
|
207
|
object.setDate(parser.getText().trim());
|
|
208
|
}
|
|
209
|
}
|
|
210
|
}
|
|
211
|
}
|
|
212
|
object.setAuthors(authors);
|
|
213
|
object.setTitles(titles);
|
|
214
|
object.setDatasourceProvenance(datasources);
|
|
215
|
object.setRelations(relations);
|
|
216
|
return object;
|
|
217
|
} catch (Exception e) {
|
|
218
|
log.error("Error on parsing record" + record, e);
|
|
219
|
return null;
|
|
220
|
}
|
|
221
|
|
|
222
|
}
|
|
223
|
|
|
224
|
}
|