Adding STRICT_MODE option for jsonpath filters

json-path/src/main/java/com/jayway/jsonpath/Option.java

@@ -83,6 +83,31 @@ public enum Option {
      * If REQUIRE_PROPERTIES option is present PathNotFoundException is thrown.
      * If REQUIRE_PROPERTIES option is not present ["b-val"] is returned.
      */
-    REQUIRE_PROPERTIES
+    REQUIRE_PROPERTIES,
+
+    /**
+     * Configures JsonPath to require all properties defined in filters.
+     *
+     *
+     * Given:
+     *
+     * <pre>
+     * [
+     *     {
+     *         "a" : "a-val",
+     *         "b" : "b-val"
+     *     },
+     *     {
+     *         "a" : "a-val",
+     *     }
+     * ]
+     * </pre>
+     *
+     * evaluating the filter "[?(@['does_not_exist'] NIN ['1', '2'])]"
+     *
+     * If STRICT_MODE option is present, filter will evaluate to false.
+     * If STRICT_MODE option is not present, filter will evaluate to true.
+     */
+    STRICT_MODE
 
 }

json-path/src/main/java/com/jayway/jsonpath/internal/filter/RelationalExpressionNode.java

@@ -1,5 +1,6 @@
 package com.jayway.jsonpath.internal.filter;
 
+import com.jayway.jsonpath.Option;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
@@ -39,6 +40,9 @@ public boolean apply(PredicateContext ctx) {
         if(right.isPathNode()){
             r = right.asPathNode().evaluate(ctx);
         }
+        if (ctx.configuration().containsOption(Option.STRICT_MODE) && (l.isUndefinedNode() || r.isUndefinedNode())) {
+            return false;
+        }
         Evaluator evaluator = EvaluatorFactory.createEvaluator(relationalOperator);
         if(evaluator != null){
             return evaluator.evaluate(l, r, ctx);

json-path/src/test/java/com/jayway/jsonpath/BaseTest.java

@@ -153,8 +153,8 @@ public class BaseTest {
             "    \"expensive\": 10\n" +
             "}";
 
-    public Predicate.PredicateContext createPredicateContext(final Object check) {
+    public Predicate.PredicateContext createPredicateContext(final Object check, Option... options) {
 
-        return new PredicateContextImpl(check, check, Configuration.defaultConfiguration(), new HashMap<Path, Object>());
+        return new PredicateContextImpl(check, check, Configuration.defaultConfiguration().setOptions(options), new HashMap<Path, Object>());
     }
 }

json-path/src/test/java/com/jayway/jsonpath/old/FilterTest.java

@@ -4,6 +4,7 @@
 import com.jayway.jsonpath.Configuration;
 import com.jayway.jsonpath.Filter;
 import com.jayway.jsonpath.JsonPath;
+import com.jayway.jsonpath.Option;
 import com.jayway.jsonpath.Predicate;
 import com.jayway.jsonpath.spi.json.JsonProvider;
 import org.assertj.core.api.Assertions;
@@ -168,6 +169,8 @@ public void nin_filters_evaluates() throws Exception {
 
         assertFalse(filter(where("item").nin(3)).apply(createPredicateContext(check)));
         assertFalse(filter(where("item").nin(asList(3))).apply(createPredicateContext(check)));
+        assertFalse(filter(where("not_existent_item").nin(3)).apply(createPredicateContext(check, Option.STRICT_MODE)));
+        assertFalse(filter(where("not_existent_item").nin(asList(3))).apply(createPredicateContext(check, Option.STRICT_MODE)));
     }
 
     @Test