[#1232] Fix JPABinder to bind multiple ids

Author: pepite

framework/src/play/db/jpa/JPAPlugin.java

@@ -47,16 +47,34 @@ public Object bind(RootParamNode rootParamNode, String name, Class clazz, java.l
 
             ParamNode paramNode = rootParamNode.getChild(name, true);
 
-            String keyName = Model.Manager.factoryFor(clazz).keyName();
-            String[] ids = paramNode.getChild(keyName, true).getValues();
+            String[] keyNames = new JPAModelLoader(clazz).keyNames();
+            ParamNode[] ids = new ParamNode[keyNames.length];
+            // Collect the matching ids
+            int i = 0;
+            for (String keyName : keyNames) {
+                ids[i++] = paramNode.getChild(keyName, true);
+            }
             if (ids != null && ids.length > 0) {
                 try {
-                    Query query = JPA.em().createQuery("from " + clazz.getName() + " o where o." + keyName + " = ?");
+                    EntityManager em = JPA.em();
+                    String q = "from " + clazz.getName() + " o where";
+                    for (String keyName : keyNames) {
+                            q += " o." + keyName + " = ? and " ;
+                    }
+                    if (q.length() > 4) {
+                        q = q.substring(0, q.length() - 4);
+                    }
+                    Query query = em.createQuery(q);
                     // The primary key can be a composite.
-                    int i = 1;
-                    Class pk = Model.Manager.factoryFor(clazz).keyType();
-                    for (String id : ids) {
-                        query.setParameter(i++, Binder.directBind(rootParamNode.getOriginalKey(), annotations, id, pk, null));
+                    Class[] pk = new JPAModelLoader(clazz).keyTypes();
+                    int j = 0;
+                    for (ParamNode id : ids) {
+                        if (id.getValues() == null || id.getValues().length == 0) {
+                            // We have no ids, it is a new entity
+                            return GenericModel.create(rootParamNode, name, clazz, annotations);
+                        }
+                        query.setParameter(j + 1, Binder.directBind(id.getOriginalKey(), annotations, id.getValues()[0], pk[j++], null));
+
                     }
                     Object o = query.getSingleResult();
                     return GenericModel.edit(rootParamNode, name, o, annotations);

samples-and-tests/just-test-cases/test/YamlTest.java

@@ -10,7 +10,9 @@ public void testYamlLoading() {
         Fixtures.load("yamlTestData.yml");
         YamlModel ym = YamlModel.all().first();
         assertEquals("Morten", ym.name);
-        
+
+        assertEquals(DataWithCompositeKey.all().fetch().size(), 2);
+
         //check binary
         assertEquals("This String is stored in yaml file using base64", new String(ym.binaryData));
 

samples-and-tests/just-test-cases/test/yamlTestData.yml

@@ -1,4 +1,12 @@
 YamlModel(ym1):
   id: 1
   name: Morten
-  binaryData: !!binary VGhpcyBTdHJpbmcgaXMgc3RvcmVkIGluIHlhbWwgZmlsZSB1c2luZyBiYXNlNjQ=
+  binaryData: !!binary VGhpcyBTdHJpbmcgaXMgc3RvcmVkIGluIHlhbWwgZmlsZSB1c2luZyBiYXNlNjQ=
+
+DataWithCompositeKey(1):
+   key1: a
+   key2: b
+
+DataWithCompositeKey(2):
+   key1: a
+   key2: c