Merge branch 'master' into fix-jackson-pojo

README.md

@@ -3,7 +3,7 @@ Jayway JsonPath
 
 **A Java DSL for reading JSON documents.**
 
-[![Build Status](https://travis-ci.org/jayway/JsonPath.svg?branch=master)](https://travis-ci.org/jayway/JsonPath)
+[![Build Status](https://travis-ci.org/json-path/JsonPath.svg?branch=master)](https://travis-ci.org/json-path/JsonPath)
 [![Maven Central](https://maven-badges.herokuapp.com/maven-central/com.jayway.jsonpath/json-path/badge.svg)](https://maven-badges.herokuapp.com/maven-central/com.jayway.jsonpath/json-path)
 [![Javadoc](https://javadoc-emblem.rhcloud.com/doc/com.jayway.jsonpath/json-path/badge.svg)](http://www.javadoc.io/doc/com.jayway.jsonpath/json-path)
 

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

@@ -359,20 +359,19 @@ public abstract class ValueNode {
         }
 
         public boolean isArray(Predicate.PredicateContext ctx) {
-            return parse(ctx) instanceof List;
+            return ctx.configuration().jsonProvider().isArray(parse(ctx));
         }
 
         public boolean isMap(Predicate.PredicateContext ctx) {
-            return parse(ctx) instanceof Map;
+            return ctx.configuration().jsonProvider().isMap(parse(ctx));
         }
 
         public int length(Predicate.PredicateContext ctx) {
-            return isArray(ctx) ? ((List) parse(ctx)).size() : -1;
+            return isArray(ctx) ? ctx.configuration().jsonProvider().length(parse(ctx)) : -1;
         }
 
         public boolean isEmpty(Predicate.PredicateContext ctx) {
-            if (isArray(ctx)) return ((List) parse(ctx)).size() == 0;
-            else if (isMap(ctx)) return ((Map) parse(ctx)).size() == 0;
+            if (isArray(ctx) || isMap(ctx)) return ctx.configuration().jsonProvider().length(parse(ctx)) == 0;
             else if((parse(ctx) instanceof String)) return ((String)parse(ctx)).length() == 0;
             return true;
         }

json-path/src/main/java/com/jayway/jsonpath/spi/mapper/GsonMappingProvider.java

@@ -62,6 +62,9 @@ public class GsonMappingProvider implements MappingProvider {
 
     @Override
     public <T> T map(Object source, Class<T> targetType, Configuration configuration) {
+        if(source == null){
+            return null;
+        }
         try {
             return factory.call().getAdapter(targetType).fromJsonTree((JsonElement) source);
         } catch (Exception e){
@@ -71,6 +74,9 @@ public class GsonMappingProvider implements MappingProvider {
 
     @Override
     public <T> T map(Object source, TypeRef<T> targetType, Configuration configuration) {
+        if(source == null){
+            return null;
+        }
         try {
             return (T) factory.call().getAdapter(TypeToken.get(targetType.getType())).fromJsonTree((JsonElement) source);
         } catch (Exception e){

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

@@ -3,6 +3,8 @@ package com.jayway.jsonpath;
 import com.google.gson.JsonArray;
 import com.google.gson.JsonElement;
 import com.google.gson.JsonObject;
+import com.jayway.jsonpath.spi.json.GsonJsonProvider;
+import com.jayway.jsonpath.spi.mapper.GsonMappingProvider;
 import com.jayway.jsonpath.spi.mapper.MappingException;
 import org.junit.Test;
 
@@ -181,6 +183,25 @@ public class GsonJsonProviderTest extends BaseTest {
 
         using(GSON_CONFIGURATION).parse(JSON).read("$", typeRef);
     }
+    
+    @Test
+    // https://github.com/json-path/JsonPath/issues/351
+    public void no_error_when_mapping_null() throws IOException {
+      
+      Configuration configuration = Configuration
+          .builder()
+          .mappingProvider(new GsonMappingProvider())
+          .jsonProvider(new GsonJsonProvider())
+          .options(Option.DEFAULT_PATH_LEAF_TO_NULL, Option.SUPPRESS_EXCEPTIONS)
+          .build();
+      
+      String json = "{\"M\":[]}";
+
+      String result = JsonPath.using(configuration).parse(json).read("$.M[0].A[0]", String.class);
+
+      assertThat(result).isNull();
+    }
+
 
     public static class FooBarBaz<T> {
         public T gen;

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

@@ -122,6 +122,33 @@ public class JacksonJsonNodeJsonProviderTest extends BaseTest {
       String id = context.read("$.data.id", String.class);
       assertThat(id).isEqualTo(uuid.toString());
     }
+    // https://github.com/json-path/JsonPath/issues/366
+    public void empty_array_check_works() throws IOException {
+      String json = "[" +
+          "  {" +
+          "    \"name\": \"a\"," +
+          "    \"groups\": [{" +
+          "      \"type\": \"phase\"," +
+          "      \"name\": \"alpha\"" +
+          "    }, {" +
+          "      \"type\": \"not_phase\"," +
+          "      \"name\": \"beta\"" +
+          "    }]" +
+          "  }, {" +
+          "    \"name\": \"b\"," +
+          "    \"groups\": [{" +
+          "      \"type\": \"phase\"," +
+          "      \"name\": \"beta\"" +
+          "    }, {" +
+          "      \"type\": \"not_phase\"," +
+          "      \"name\": \"alpha\"" +
+          "    }]" +
+          "  }" +
+          "]";
+      ArrayNode node = using(JACKSON_JSON_NODE_CONFIGURATION).parse(json).read("$[?(@.groups[?(@.type == 'phase' && @.name == 'alpha')] empty false)]");
+      assertThat(node.size()).isEqualTo(1);
+      assertThat(node.get(0).get("name").asText()).isEqualTo("a");
+    }
 
     public static class FooBarBaz<T> {
         public T gen;