1
|
package eu.dnetlib.data.mapreduce.util;
|
2
|
|
3
|
import java.util.Collections;
|
4
|
import java.util.List;
|
5
|
import java.util.Map;
|
6
|
import java.util.Map.Entry;
|
7
|
|
8
|
import com.google.common.collect.Maps;
|
9
|
import org.apache.hadoop.hbase.util.Bytes;
|
10
|
import org.apache.hadoop.mapreduce.Mapper.Context;
|
11
|
|
12
|
import com.google.common.collect.Lists;
|
13
|
import com.google.protobuf.InvalidProtocolBufferException;
|
14
|
|
15
|
import eu.dnetlib.data.proto.OafProtos.Oaf;
|
16
|
import eu.dnetlib.data.transform.OafEntityMerger;
|
17
|
|
18
|
public class UpdateMerger {
|
19
|
|
20
|
private static final String UPDATE_MERGER = "UPDATE_MERGE";
|
21
|
private static final String N_MERGES = "N_MERGES";
|
22
|
|
23
|
@SuppressWarnings("rawtypes")
|
24
|
public static Oaf mergeBodyUpdates(final Context context, final Map<byte[], byte[]> map) throws InvalidProtocolBufferException {
|
25
|
|
26
|
final Map<String, byte[]> stringMap = Maps.newHashMap();
|
27
|
for(Entry<byte[], byte[]> e : map.entrySet()) {
|
28
|
stringMap.put(Bytes.toString(e.getKey()), e.getValue());
|
29
|
}
|
30
|
|
31
|
return doMerge(context, stringMap);
|
32
|
}
|
33
|
|
34
|
public static Oaf mergeBodyUpdates(final Map<String, byte[]> map) throws InvalidProtocolBufferException {
|
35
|
return doMerge(null, map);
|
36
|
}
|
37
|
|
38
|
private static Oaf doMerge(final Context context, final Map<String, byte[]> map)
|
39
|
throws InvalidProtocolBufferException {
|
40
|
|
41
|
final byte[] value = map.get(DedupUtils.BODY_S);
|
42
|
if (value == null) return null;
|
43
|
|
44
|
Oaf.Builder builder = Oaf.newBuilder(Oaf.parseFrom(value));
|
45
|
final List<String> keys = Lists.newArrayList();
|
46
|
|
47
|
// we fetch all the body updates
|
48
|
for (final String o : map.keySet()) {
|
49
|
if (o.startsWith("update_")) {
|
50
|
keys.add(o);
|
51
|
}
|
52
|
}
|
53
|
if (!keys.isEmpty()) {
|
54
|
// we merge all the sorted updates with the body
|
55
|
Collections.sort(keys);
|
56
|
for (final String k : keys) {
|
57
|
final Oaf update = Oaf.parseFrom(map.get(k));
|
58
|
// System.out.println("\n\nBODY: \n" + body.build().toString());
|
59
|
// System.out.println("UPDATE: \n" + update.toString());
|
60
|
builder.mergeFrom(update);
|
61
|
// System.out.println("UDPATED BODY: \n" + body.build().toString() + "\n\n");
|
62
|
}
|
63
|
|
64
|
builder = OafEntityMerger.merge(builder);
|
65
|
|
66
|
if (context != null) {
|
67
|
context.getCounter(UPDATE_MERGER, N_MERGES).increment(keys.size());
|
68
|
}
|
69
|
}
|
70
|
return builder.build();
|
71
|
}
|
72
|
|
73
|
|
74
|
}
|