sdis1819-t7g02 / service / Chunk.java @ 1
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package service; |
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import java.util.ArrayList; |
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public class Chunk implements java.io.Serializable { |
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private int chunkNr; |
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private String fileID; |
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private String filePathName = null; |
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private int size; |
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private int actual_replication_degree = 0; |
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private int desired_replication_degree; |
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private byte[] chunkContent; |
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// each chunk is identified by the pair <fileID, chunkNo>
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public Chunk(int n, byte[] c, String s, int desiredRepDegree) throws Exception |
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{
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this.chunkNr = n;
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this.chunkContent = getFiltredData(c);
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if(chunkContent.length > Constants.MAX_CHUNK_SIZE) {
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throw new Exception("Invalid chunk size -> " + chunkContent.length); |
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} |
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this.size = chunkContent.length;
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desired_replication_degree = desiredRepDegree; |
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fileID = s; |
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} |
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private byte[] getFiltredData(byte[] c) { |
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ArrayList<Byte> aux = new ArrayList<Byte>(); |
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boolean toAdd = false; |
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for(byte b : c) { |
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aux.add(b); |
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} |
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byte[] toReturn = new byte[aux.size()]; |
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for(int i = aux.size() - 1, k = 0; i >= 0 ; i--) { |
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if(aux.get(i) == 0) { |
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if(!toAdd) {
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continue;
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} |
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else {
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toReturn[k] = aux.get(i); |
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k++; |
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} |
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} |
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else {
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toReturn[k] = aux.get(i); |
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toAdd = true;
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k++; |
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} |
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} |
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return toReturn;
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} |
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public int getReplicationDegree() { |
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return desired_replication_degree;
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} |
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public void setActualReplicationDegree(int rd) |
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{
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this.actual_replication_degree = rd;
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} |
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public String getChunkNumber() |
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{
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return Integer.toString(this.chunkNr); |
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} |
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public String getChunkId() |
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{
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return this.fileID; |
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} |
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public int getChunkSize() |
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{
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return this.size; |
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} |
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public int getActualReplicationDegree() |
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{
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return this.actual_replication_degree; |
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} |
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public byte[] getChunkContent() |
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{
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return this.chunkContent; |
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} |
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public int compareTo(Chunk c) |
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{
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return(this.chunkNr - c.chunkNr); |
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} |
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@Override
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public boolean equals(Object obj) { |
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if (this == obj) { |
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return true; |
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} |
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if (obj == null) { |
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return false; |
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} |
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if (!(obj instanceof Chunk)) { |
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return false; |
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} |
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Chunk other = (Chunk) obj; |
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if (chunkNr != other.chunkNr) {
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return false; |
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} |
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if (fileID == null) { |
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if (other.fileID != null) { |
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return false; |
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} |
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} else if (!fileID.equals(other.fileID)) { |
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return false; |
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} |
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return true; |
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} |
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public String getFilePathName() { |
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return filePathName;
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} |
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public void setFilePathName(String filePathName) { |
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this.filePathName = filePathName;
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} |
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} |