Add hash code based unique ID to signs

docs/FORMAT.md

@@ -13,6 +13,7 @@ Each shop sign is represented by an object, that _always_ contains the following
     * . . .if using **QuickShop**:
         * `true` if `buy` type and has stock available
         * `true` if `sell` type and has free space available
+* `id` - Sign's unique ID number, calculated from world and position coordinates
 * `locWorld` - Sign's world
 * `locX` - Sign's integer X block position
 * `locY` - Sign's integer Y block position

pom.xml

@@ -7,7 +7,7 @@
     <!-- Project properties -->
     <groupId>roycurtis.signshopexport</groupId>
     <artifactId>SignShopExport</artifactId>
-    <version>1.11.2-1.0.0</version>
+    <version>1.11.2-1.1.0</version>
 
     <description>
         Emits a public JSON database of SignShop or QuickShop shops available on the server

src/main/java/roycurtis/signshopexport/json/Record.java

@@ -2,9 +2,14 @@
 
 import org.bukkit.inventory.ItemStack;
 
+import java.util.Objects;
+
 /** Represents a JSON record for Gson serialization */
 public class Record
 {
+    // ID
+    public long id;
+
     // Location
     public String locWorld;
     public int    locX;
@@ -34,4 +39,10 @@ public String toString()
             ownerName, ownerUuid
         );
     }
+
+    @Override
+    public int hashCode()
+    {
+        return Objects.hash(locWorld, locX, locY, locZ);
+    }
 }

src/main/java/roycurtis/signshopexport/quickshop/QSDataSource.java

@@ -42,6 +42,7 @@ public Record createRecordForIndex(int idx)
         rec.locX     = loc.getBlockX();
         rec.locY     = loc.getBlockY();
         rec.locZ     = loc.getBlockZ();
+        rec.id       = rec.hashCode();
 
         rec.ownerName = player.getName();
         rec.ownerUuid = player.getUniqueId().toString();

src/main/java/roycurtis/signshopexport/signshop/SSDataSource.java

@@ -37,6 +37,7 @@ public Record createRecordForIndex(int idx)
         rec.locX     = loc.getBlockX();
         rec.locY     = loc.getBlockY();
         rec.locZ     = loc.getBlockZ();
+        rec.id       = rec.hashCode();
 
         rec.ownerName = seller.getOwner().getName();
         rec.ownerUuid = seller.getOwner().GetIdentifier().getStringIdentifier();