Hash join: Difference between revisions

Content added Content deleted

Inline

@@ Line 445: / Line 445: @@
 <lang Groovy>
-def hashJoin(s, r) {
+def hashJoin(s, r, col) {
-    def hashed = s.groupBy { sItem -> sItem.name }
+    def hashed = s.groupBy { sItem -> sItem[col] }
     def q = [] as Set
     r.each { rItem ->
-        def join = hashed[rItem.name]
+        def join = hashed[rItem[col]]
         join.each { sItem ->
             q << sItem.plus(rItem)
@@ Line 476: / Line 476: @@
          [name: 'Glory', nemesis: 'Buffy']]
-hashJoin(s, r).sort {it.name}.each { println it }
+hashJoin(s, r, "name").sort {it.name}.each { println it }
 </pre>