1 package org.simantics.acorn.lru;
3 import java.nio.file.Path;
4 import java.util.ArrayList;
5 import java.util.Arrays;
7 import org.simantics.acorn.exception.AcornAccessVerificationException;
8 import org.simantics.acorn.exception.IllegalAcornStateException;
9 import org.simantics.db.service.Bytes;
10 import org.simantics.utils.datastructures.Pair;
11 import org.slf4j.Logger;
12 import org.slf4j.LoggerFactory;
14 import gnu.trove.list.array.TByteArrayList;
16 public class ChangeSetInfo extends LRUObject<Long, ChangeSetInfo> {
18 private static final Logger LOGGER = LoggerFactory.getLogger(ChangeSetInfo.class);
19 private byte[] metadataBytes;
20 private ArrayList<String> clusterChangeSetIds;
23 public ChangeSetInfo(LRU<Long, ChangeSetInfo> LRU, Path readDir, Long revision, int offset, int length) throws AcornAccessVerificationException {
24 super(LRU, revision, readDir, "clusterStream", offset, length, false, false);
29 public ChangeSetInfo(LRU<Long, ChangeSetInfo> LRU, Long revision, byte[] bytes, ArrayList<String> clusterChangeSetIds) throws AcornAccessVerificationException {
30 super(LRU, revision, LRU.getDirectory(), "clusterStream", true, true);
31 this.metadataBytes = bytes;
32 this.metadataBytes = bytes;
33 this.clusterChangeSetIds = clusterChangeSetIds;
34 LRU.insert(this, accessTime);
37 public ArrayList<String> getCCSIds() throws AcornAccessVerificationException {
38 if(VERIFY) verifyAccess();
39 return clusterChangeSetIds;
42 public byte[] getMetadataBytes() throws AcornAccessVerificationException, IllegalAcornStateException {
50 private static void writeLE(TByteArrayList bytes, int value) {
52 bytes.add( (byte) (value & 0xFF));
53 bytes.add((byte) ((value >>> 8) & 0xFF));
54 bytes.add((byte) ((value >>> 16) & 0xFF));
55 bytes.add((byte) ((value >>> 24) & 0xFF));
60 protected Pair<byte[], Integer> toBytes() {
62 TByteArrayList result = new TByteArrayList();
63 writeLE(result, metadataBytes.length);
64 result.add(metadataBytes);
65 writeLE(result, clusterChangeSetIds.size());
66 for(String id : clusterChangeSetIds) {
67 byte[] bb = id.getBytes();
68 writeLE(result, bb.length);
74 byte[] ret = result.toArray();
76 return Pair.make(ret, ret.length);
82 clusterChangeSetIds = null;
87 public void fromFile(byte[] data) {
89 clusterChangeSetIds = new ArrayList<String>();
91 int metadataLength = Bytes.readLE4(data, 0);
92 metadataBytes = Arrays.copyOfRange(data, 4, 4+metadataLength);
93 int offset = 4+metadataLength;
94 int numberOfChangeSets = Bytes.readLE4(data, offset);
96 for(int i=0;i<numberOfChangeSets;i++) {
97 int length = Bytes.readLE4(data, offset);
99 String id = new String(Arrays.copyOfRange(data, offset, offset+length));
100 clusterChangeSetIds.add(id);
107 String getExtension() {
112 protected boolean overwrite() {
117 public Logger getLogger() {