add support for filter, change sorting/pagination api, cleanup

1 files changed, 21 insertions, 0 deletions

diff --git a/src/main/java/nu/xss/jpa/query/filter/AbstractFilter.java b/src/main/java/nu/xss/jpa/query/filter/AbstractFilter.java
new file mode 100644
index 0000000..f2d2bbf
--- /dev/null
+++ b/src/main/java/nu/xss/jpa/query/filter/AbstractFilter.java
@@ -0,0 +1,21 @@
+package nu.xss.jpa.query.filter;
+
+import java.util.HashSet;
+import java.util.Set;
+
+import javax.persistence.criteria.Predicate;
+
+public abstract class AbstractFilter<E> implements Filter {
+
+	private Set<Predicate> predicates = new HashSet<Predicate>();
+
+	protected void addPredicate(Predicate predicate) {
+		predicates.add(predicate);
+	}
+
+	@Override
+	public Set<Predicate> getPredicates() {
+		return predicates;
+	}
+
+}