1
|
package eu.dnetlib.msro.workflows.resultset;
|
2
|
|
3
|
import java.util.List;
|
4
|
|
5
|
import org.apache.commons.logging.Log;
|
6
|
import org.apache.commons.logging.LogFactory;
|
7
|
|
8
|
import com.google.common.collect.Lists;
|
9
|
import com.googlecode.sarasvati.GraphProcess;
|
10
|
|
11
|
import eu.dnetlib.enabling.resultset.ResultSet;
|
12
|
import eu.dnetlib.enabling.resultset.ResultSetAware;
|
13
|
import eu.dnetlib.enabling.resultset.ResultSetListener;
|
14
|
import eu.dnetlib.enabling.resultset.rmi.ResultSetException;
|
15
|
import eu.dnetlib.enabling.resultset.rmi.ResultSetService;
|
16
|
|
17
|
public class ProcessCountingResultSetListener implements ResultSetListener, ResultSetAware {
|
18
|
private int count;
|
19
|
|
20
|
private GraphProcess process;
|
21
|
private ResultSetService inputService;
|
22
|
private String inputRsId;
|
23
|
private ResultSet outputResulset;
|
24
|
private int inputSize;
|
25
|
private boolean inaccurate = false;
|
26
|
|
27
|
/**
|
28
|
* Logger.
|
29
|
*/
|
30
|
private static final Log log = LogFactory.getLog(ProcessCountingResultSetListener.class);
|
31
|
|
32
|
public ProcessCountingResultSetListener(final GraphProcess process, final ResultSetService inputService, final String inputRsId) throws ResultSetException {
|
33
|
super();
|
34
|
this.process = process;
|
35
|
this.inputService = inputService;
|
36
|
this.inputRsId = inputRsId;
|
37
|
this.inputSize = inputService.getNumberOfElements(inputRsId);
|
38
|
this.count = 0;
|
39
|
}
|
40
|
|
41
|
@Override
|
42
|
public List<String> getResult(int from, int to) {
|
43
|
if (process.isCanceled()) {
|
44
|
this.outputResulset.close();
|
45
|
return Lists.newArrayList();
|
46
|
}
|
47
|
try {
|
48
|
this.count = to;
|
49
|
if (count >= this.inputSize) {
|
50
|
outputResulset.close();
|
51
|
}
|
52
|
return inputService.getResult(inputRsId, from, to, "WAITING");
|
53
|
} catch (ResultSetException e) {
|
54
|
log.error("Error fetching records from resultset: " + inputRsId);
|
55
|
throw new RuntimeException(e);
|
56
|
}
|
57
|
}
|
58
|
|
59
|
@Override
|
60
|
public int getSize() {
|
61
|
if (process.isCanceled()) {
|
62
|
this.outputResulset.close();
|
63
|
return count;
|
64
|
}
|
65
|
try {
|
66
|
int size = inputService.getNumberOfElements(inputRsId);
|
67
|
if (this.inputSize != size) {
|
68
|
this.inputSize = size;
|
69
|
this.inaccurate = true;
|
70
|
}
|
71
|
this.inputSize = size;
|
72
|
if (count >= this.inputSize) {
|
73
|
outputResulset.close();
|
74
|
this.inaccurate = false;
|
75
|
}
|
76
|
return this.inputSize;
|
77
|
} catch (ResultSetException e) {
|
78
|
log.error("Error fetching records from resultset: " + inputRsId);
|
79
|
throw new RuntimeException(e);
|
80
|
}
|
81
|
|
82
|
}
|
83
|
|
84
|
@Override
|
85
|
public void setResultSet(ResultSet outputResulset) {
|
86
|
this.outputResulset = outputResulset;
|
87
|
}
|
88
|
|
89
|
public int getCount() {
|
90
|
return count;
|
91
|
}
|
92
|
|
93
|
public void setCount(int count) {
|
94
|
this.count = count;
|
95
|
}
|
96
|
|
97
|
public boolean isInaccurate() {
|
98
|
return inaccurate;
|
99
|
}
|
100
|
|
101
|
}
|