java/dictionary-generator/src/cz/frantovo/telco/dictionary/IndexEntry.java
author František Kučera <franta-hg@frantovo.cz>
Fri, 09 Aug 2013 23:25:16 +0200
changeset 28 cb8c5cccaa8d
parent 17 b188eae2c092
child 130 b8dc8a6f82cf
permissions -rw-r--r--
data: mvno, dms, svg, imap, pop, smtp
     1 /**
     2  * Free Telco Dictionary
     3  * Copyright © 2013 František Kučera (frantovo.cz)
     4  *
     5  * This program is free software: you can redistribute it and/or modify
     6  * it under the terms of the GNU General Public License as published by
     7  * the Free Software Foundation, either version 3 of the License, or
     8  * (at your option) any later version.
     9  *
    10  * This program is distributed in the hope that it will be useful,
    11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
    12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
    13  * GNU General Public License for more details.
    14  *
    15  * You should have received a copy of the GNU General Public License
    16  * along with this program. If not, see <http://www.gnu.org/licenses/>.
    17  */
    18 package cz.frantovo.telco.dictionary;
    19 
    20 import java.io.DataOutputStream;
    21 import java.io.IOException;
    22 import java.nio.charset.StandardCharsets;
    23 import java.util.Objects;
    24 
    25 /**
    26  *
    27  * @author Ing. František Kučera (frantovo.cz)
    28  */
    29 public class IndexEntry implements Comparable<IndexEntry> {
    30 
    31 	private String name;
    32 	private long offset;
    33 	private long length;
    34 	private long ordinal;
    35 
    36 	public IndexEntry(String name, long offset, long length) {
    37 		this.name = name;
    38 		this.offset = offset;
    39 		this.length = length;
    40 	}
    41 
    42 	public void serialize(DataOutputStream indexOutputStream) throws IOException {
    43 		indexOutputStream.write(name.getBytes(StandardCharsets.UTF_8));
    44 		indexOutputStream.write(0);
    45 		indexOutputStream.writeInt((int) offset); // unsigned int 32
    46 		indexOutputStream.writeInt((int) length); // unsigned int 32
    47 	}
    48 
    49 	public void setOrdinal(long ordinal) {
    50 		this.ordinal = ordinal;
    51 	}
    52 
    53 	public long getOrdinal() {
    54 		return ordinal;
    55 	}
    56 
    57 	@Override
    58 	public int compareTo(IndexEntry o) {
    59 		int nameDiff = name.compareTo(o.name);
    60 		if (nameDiff == 0) {
    61 			int offsetDiff = ((Long) offset).compareTo(o.offset);
    62 			if (offsetDiff == 0) {
    63 				return ((Long) length).compareTo(o.length);
    64 			} else {
    65 				return offsetDiff;
    66 			}
    67 		} else {
    68 			return nameDiff;
    69 		}
    70 	}
    71 
    72 	@Override
    73 	public boolean equals(Object o) {
    74 		return o instanceof IndexEntry && compareTo((IndexEntry) o) == 0;
    75 	}
    76 
    77 	@Override
    78 	public int hashCode() {
    79 		int hash = 5;
    80 		hash = 53 * hash + Objects.hashCode(this.name);
    81 		hash = 53 * hash + (int) (this.offset ^ (this.offset >>> 32));
    82 		hash = 53 * hash + (int) (this.length ^ (this.length >>> 32));
    83 		return hash;
    84 	}
    85 }