#2290 - Add MetaTimedMetric locationHash() which is a crc32 checksum of package + type + method (excludes line number)

ebean-api/src/main/java/io/ebean/ProfileLocation.java

@@ -45,6 +45,14 @@ public interface ProfileLocation {
    */
   String label();
 
+  /**
+   * Return a hash of the location that intentionally excludes the line number.
+   * <p>
+   * The hash is expected to be stable regardless of line number in the source file
+   * so that is identifies the class and method location over a long time.
+   */
+  long hash();
+
   /**
    * Return the full location.
    */

ebean-api/src/main/java/io/ebean/meta/MetaTimedMetric.java

@@ -6,6 +6,14 @@ package io.ebean.meta;
  */
 public interface MetaTimedMetric extends MetaMetric {
 
+  /**
+   * Return the metric location hash if defined.
+   * <p>
+   * This hash excludes line number with the intention of being stable over time
+   * as code changes move the source line (but the method is the same).
+   */
+  long locationHash();
+
   /**
    * Return the metric location if defined.
    */

ebean-api/src/main/java/io/ebean/meta/MetricData.java

@@ -14,6 +14,7 @@ public class MetricData {
   private Long mean;
   private Long max;
   private Long total;
+  private long locHash;
 
   public MetricData(String name) {
     this.name = name;
@@ -38,6 +39,14 @@ public class MetricData {
     this.sqlHash = sqlHash;
   }
 
+  public void setLocHash(long locHash) {
+    this.locHash = locHash;
+  }
+
+  public long getLocHash() {
+    return locHash;
+  }
+
   public String getLoc() {
     return loc;
   }

ebean-api/src/main/java/io/ebean/metric/TimedMetricStats.java

@@ -12,6 +12,11 @@ public interface TimedMetricStats extends MetaTimedMetric {
    */
   void setLocation(String location);
 
+  /**
+   * Additionally set the location hash.
+   */
+  void setLocationHash(long locationHash);
+
   /**
    * Override the name based on profile location.
    */