1 package org.simantics.acorn.lru;
3 import java.nio.file.Path;
5 import org.simantics.acorn.FileCache;
6 import org.simantics.acorn.exception.AcornAccessVerificationException;
7 import org.simantics.acorn.exception.IllegalAcornStateException;
8 import org.simantics.db.Database.Session.ResourceSegment;
9 import org.simantics.utils.datastructures.Pair;
11 import gnu.trove.list.array.TByteArrayList;
13 public class FileInfo extends LRUObject<String, FileInfo> {
15 private TByteArrayList bytes;
18 public FileInfo(LRU<String, FileInfo> LRU, FileCache fileCache, Path readDir, String id, int offset, int length) throws AcornAccessVerificationException {
19 super(LRU, fileCache, id, readDir, id.toString() + ".extFile", offset, length, false, false);
24 public FileInfo(LRU<String, FileInfo> LRU, FileCache fileCache, String id, int size) throws AcornAccessVerificationException {
25 super(LRU, fileCache, id, LRU.getDirectory(), id.toString() + ".extFile", true, true);
26 this.bytes = new TByteArrayList(size);
27 LRU.insert(this, accessTime);
30 public byte[] getResourceFile() throws AcornAccessVerificationException, IllegalAcornStateException {
32 if(VERIFY) verifyAccess();
35 return bytes.toArray();
39 public ResourceSegment getResourceSegment(final byte[] clusterUID, final int resourceIndex, final long segmentOffset, short segmentSize) throws AcornAccessVerificationException, IllegalAcornStateException {
41 if(VERIFY) verifyAccess();
45 int segSize = segmentSize;
48 if (segmentSize == -1)
49 segSize = Math.min(65535, bytes.size());
51 final long valueSize = bytes.size();
52 final byte[] segment = bytes.toArray((int) segmentOffset, segSize);
54 return new ResourceSegment() {
57 public long getValueSize() {
62 public byte[] getSegment() {
67 public int getResourceIndex() {
72 public long getOffset() {
77 public byte[] getClusterId() {
81 } catch (Throwable t) {
82 throw new IllegalAcornStateException(t);
86 public void updateData(byte[] newBytes, long offset, long pos, long size) throws AcornAccessVerificationException, IllegalAcornStateException {
88 if(VERIFY) verifyAccess();
92 bytes.remove((int)offset, (int)(bytes.size()-offset));
94 bytes.fill((int) (offset + size), (int) (offset + size), (byte) 0);
95 bytes.set((int) offset, newBytes, (int) pos, (int) size);
103 public Pair<byte[], Integer> toBytes() {
104 byte[] result = bytes.toArray();
106 return Pair.make(result, result.length);
110 protected void release() {
115 public void fromFile(byte[] data) {
116 bytes = new TByteArrayList(data);
120 protected String getExtension() {
125 protected boolean overwrite() {