1 files changed, 70 insertions, 0 deletions
diff --git a/predicate-search-core/src/main/java/com/yahoo/document/predicate/SimplePredicates.java b/predicate-search-core/src/main/java/com/yahoo/document/predicate/SimplePredicates.java
new file mode 100644
index 00000000000..1b339767109
--- /dev/null
+++ b/predicate-search-core/src/main/java/com/yahoo/document/predicate/SimplePredicates.java
@@ -0,0 +1,70 @@
+// Copyright 2016 Yahoo Inc. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
+package com.yahoo.document.predicate;
+
+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ * @author <a href="mailto:simon@yahoo-inc.com">Simon Thoresen Hult</a>
+ */
+public class SimplePredicates {
+
+    public static Predicate newPredicate() {
+        return new Predicate() {
+
+            @Override
+            protected void appendTo(StringBuilder out) {
+                out.append("<anon>");
+            }
+
+        };
+    }
+
+    public static Predicate newString(String str) {
+        return new StringNode(str);
+    }
+
+    public static List<Predicate> newStrings(String... arr) {
+        List<Predicate> ret = new ArrayList<>(arr.length);
+        for (String str : arr) {
+            ret.add(newString(str));
+        }
+        return ret;
+    }
+
+    private static class StringNode extends Predicate {
+
+        final String str;
+
+        StringNode(String str) {
+            this.str = str;
+        }
+
+        @Override
+        public int hashCode() {
+            return str.hashCode();
+        }
+
+        @Override
+        public boolean equals(Object obj) {
+            if (obj == this) {
+                return true;
+            }
+            if (!(obj instanceof StringNode)) {
+                return false;
+            }
+            StringNode rhs = (StringNode)obj;
+            if (!str.equals(rhs.str)) {
+                return false;
+            }
+            return true;
+        }
+
+        @Override
+        protected void appendTo(StringBuilder out) {
+            out.append(str);
+        }
+
+    }
+}
+