From 27f1f3cbdcb7a9ff117b6cef7d5bd4612616645e Mon Sep 17 00:00:00 2001
From: Josefina Revilla <josefinarevilla@gmail.com>
Date: Wed, 20 Sep 2023 16:12:24 -0300
Subject: [PATCH] Implements getItemCount with filters

---
 .../src/main/java/org/jpos/ee/DBManager.java  | 26 +++++++++++++++++++
 1 file changed, 26 insertions(+)

diff --git a/modules/dbsupport/src/main/java/org/jpos/ee/DBManager.java b/modules/dbsupport/src/main/java/org/jpos/ee/DBManager.java
index eb9a700b45..21226bc138 100644
--- a/modules/dbsupport/src/main/java/org/jpos/ee/DBManager.java
+++ b/modules/dbsupport/src/main/java/org/jpos/ee/DBManager.java
@@ -55,6 +55,32 @@ public int getItemCount()  {
         return db.session().createQuery(query).getSingleResult().intValue();
     }
 
+    public int getItemCount(DBFilter<T>... filters)  {
+        CriteriaBuilder cb = db.session().getCriteriaBuilder();
+        // CriteriaQuery<Card> query = createCriteriaQuery(false, (DBFilter<Card>) null);
+        CriteriaQuery<Long> countQuery = cb.createQuery(Long.class);
+        Root<T> root = countQuery.from(clazz);
+        Predicate combinedPredicate = cb.and(
+            Arrays.stream(filters)
+                .filter(f -> f != null)
+                .map(f -> f.createPredicate(cb, root))
+                .toArray(Predicate[]::new)
+        );
+
+        Predicate[] mgrFilters = buildFilters(root);
+        if (mgrFilters != null) {
+            Predicate[] nonNullPredicates = Arrays.stream(mgrFilters).filter(f -> f != null).toArray(Predicate[]::new);
+            Predicate mgrPredicate = cb.and(nonNullPredicates);
+            combinedPredicate = cb.and(mgrPredicate, combinedPredicate);
+        }
+
+        countQuery.select(cb.count(root));
+        countQuery.where(combinedPredicate);
+        Long totalCount = db.session().createQuery(countQuery).getSingleResult();
+        return totalCount.intValue();
+
+    }
+
     public List<T> getAll(int offset, int limit, Map<String,Boolean> orders) {
         CriteriaBuilder criteriaBuilder = db.session().getCriteriaBuilder();
         CriteriaQuery<T> query = criteriaBuilder.createQuery(clazz);