Change query metric hash from MD5 of sql + name + loc to Checksum of sql

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

@@ -23,6 +23,6 @@ public interface MetaQueryMetric extends MetaTimedMetric {
   /**
    * Return the hash of the plan.
    */
-  String getHash();
+  long getHash();
 
 }

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

@@ -30,7 +30,7 @@ public interface MetaQueryPlan {
   /**
    * Return the hash of the plan.
    */
-  String getHash();
+  long getHash();
 
   /**
    * Return a description of the bind values.

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

@@ -6,7 +6,7 @@ package io.ebean.meta;
 public class MetricData {
 
   private String name;
-  private String hash;
+  private long hash;
   private String loc;
   private String sql;
 
@@ -30,11 +30,11 @@ public class MetricData {
     this.name = name;
   }
 
-  public String getHash() {
+  public long getHash() {
     return hash;
   }
 
-  public void setHash(String hash) {
+  public void setHash(long hash) {
     this.hash = hash;
   }
 

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

@@ -10,7 +10,7 @@ public class QueryPlanInit {
 
   private boolean all;
 
-  private Set<String> hashes = new HashSet<>();
+  private Set<Long> hashes = new HashSet<>();
 
   private long thresholdMicros;
 
@@ -47,21 +47,21 @@ public class QueryPlanInit {
   /**
    * Return true if the query plan should be initiated based on it's hash.
    */
-  public boolean includeHash(String hash) {
-    return all || hashes.contains(hash);
+  public boolean includeHash(long sqlHash) {
+    return all || hashes.contains(sqlHash);
   }
 
   /**
    * Return the specific hashes that we want to collect query plans on.
    */
-  public Set<String> getHashes() {
+  public Set<Long> getHashes() {
     return hashes;
   }
 
   /**
    * Set the specific hashes that we want to collect query plans on.
    */
-  public void setHashes(Set<String> hashes) {
+  public void setHashes(Set<Long> hashes) {
     this.hashes = hashes;
   }
 }