Remove obsolete Hashid class

The POJO has been implemented to simplify the handling of the binding
between the numbers and their hash value, but users should implement the
simple POJO on their own instead of forcing them to use this approach.

The public API methods now returning the primitive values which have
been hold by the Hashid class.

GH-9

Author: arcticicestudio

src/main/java/com/arcticicestudio/icecore/hashids/Hashid.java

@@ -103,7 +103,7 @@ public final class Hashids {
   private final String separators;
 
   /**
-   * Constructs a new Hashid with all default values.
+   * Constructs a new instance with all default values.
    * <p>
    *   <ul>
    *     <li>no salt</li>
@@ -117,7 +117,7 @@ public Hashids() {
   }
 
   /**
-   * Constructs a new Hashid with the specified salt and the default minimal hash length, alphabet and separators.
+   * Constructs a new instance with the specified salt and the default minimal hash length, alphabet and separators.
    * <p>
    *   <ul>
    *     <li>no minimal hash length</li>
@@ -132,7 +132,7 @@ public Hashids(String salt) {
   }
 
   /**
-   * Constructs a new Hashid with the specified salt and the minimal hash length and the default alphabet and
+   * Constructs a new instance with the specified salt and the minimal hash length and the default alphabet and
    * separators.
    * <p>
    *   <ul>
@@ -148,7 +148,7 @@ public Hashids(String salt, int minHashLength) {
   }
 
   /**
-   * Constructs a new Hashid with the specified salt and alphabet and the default minimal hash length and separators.
+   * Constructs a new instance with the specified salt and alphabet and the default minimal hash length and separators.
    * <p>
    *   <ul>
    *     <li>no minimal hash length</li>
@@ -163,7 +163,7 @@ public Hashids(String salt, String alphabet) {
   }
 
   /**
-   * Constructs a new Hashid with the specified salt, minimal hash length and alphabet and the default separators.
+   * Constructs a new instance with the specified salt, minimal hash length and alphabet and the default separators.
    * <p>
    *   <ul>
    *     <li>{@link #DEFAULT_SEPARATORS}</li>
@@ -178,7 +178,7 @@ public Hashids(String salt, int minHashLength, String alphabet) {
   }
 
   /**
-   * Constructs a new Hashid with the specified salt, minimal hash length, alphabet and separators.
+   * Constructs a new instance with the specified salt, minimal hash length, alphabet and separators.
    *
    * @param salt the salt value
    * @param minHashLength the minimal length of the hash
@@ -352,11 +352,11 @@ public Hashids build() {
    * Encode number(s).
    *
    * @param numbers the number(s) to encode
-   * @return the Hashid instance with the number(s) and the encoded string
+   * @return the hash
    */
-  public Hashid encode(long... numbers) {
+  public String encode(long... numbers) {
     if (numbers.length == 0) {
-      return Hashid.EMPTY;
+      return "";
     }
     return doEncode(numbers);
   }
@@ -407,18 +407,18 @@ public String encodeHex(String hex) {
     while (matcher.find()) {
       matched.add(Long.parseLong("1" + matcher.group(), 16));
     }
-    return doEncode(toArray(matched)).toString();
+    return doEncode(toArray(matched));
   }
 
   /**
    * Decode an encoded string.
    *
    * @param hash the encoded string
-   * @return the Hashid instance with the decoded hash and decoded number(s)
+   * @return the decoded number(s)
    */
-  public Hashid decode(String hash) {
+  public long[] decode(String hash) {
     if (isEmpty(hash)) {
-      return Hashid.EMPTY;
+      return new long[0];
     }
     return doDecode(hash, alphabet);
   }
@@ -433,7 +433,7 @@ public long[] decodeLongNumbers(String hash) {
     if (isEmpty(hash)) {
       return new long[0];
     }
-    return doDecode(hash, alphabet).numbers();
+    return doDecode(hash, alphabet);
   }
 
   /**
@@ -447,7 +447,7 @@ public int[] decodeIntegerNumbers(String hash) {
     if (isEmpty(hash)) {
       return new int[0];
     }
-    long[] numbers = doDecode(hash, alphabet).numbers();
+    long[] numbers = doDecode(hash, alphabet);
     int[] ints = new int[numbers.length];
     for (int idx = 0; idx < numbers.length; idx++) {
       long number = numbers[idx];
@@ -474,7 +474,7 @@ public String decodeHex(String hash) {
     return sb.toString();
   }
 
-  private Hashid doEncode(long... numbers) {
+  private String doEncode(long... numbers) {
     int numberHashInt = 0;
     for (int idx = 0; idx < numbers.length; idx++) {
       if (numbers[idx] < 0 || numbers[idx] > MAX_NUMBER_VALUE) {
@@ -525,10 +525,10 @@ private Hashid doEncode(long... numbers) {
         result.replace(0, result.length(), result.substring(startPos, startPos + minHashLength));
       }
     }
-    return new Hashid(numbers, result.toString());
+    return result.toString();
   }
 
-  private Hashid doDecode(String hash, String alphabet) {
+  private long[] doDecode(String hash, String alphabet) {
     final List<Long> result = new ArrayList<>();
     int idx = 0;
     String[] hashArray = hash.replaceAll("[" + guards + "]", " ").split(" ");
@@ -550,8 +550,7 @@ private Hashid doDecode(String hash, String alphabet) {
         result.add(unhash(subHash, alphabet));
       }
     }
-    long[] resultArray = toArray(result);
-    return new Hashid(resultArray, hash);
+    return toArray(result);
   }
 
   private static String consistentShuffle(String alphabet, String salt) {