Improved exceptions and simplified JsonProviderFactory.

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

@@ -0,0 +1,24 @@
+package com.jayway.jsonpath;
+
+/**
+ * User: kalle
+ * Date: 8/20/13
+ * Time: 2:33 PM
+ */
+public class PathNotFoundException extends InvalidPathException {
+
+    public PathNotFoundException() {
+    }
+
+    public PathNotFoundException(String message) {
+        super(message);
+    }
+
+    public PathNotFoundException(String message, Throwable cause) {
+        super(message, cause);
+    }
+
+    public PathNotFoundException(Throwable cause) {
+        super(cause);
+    }
+}

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

@@ -16,6 +16,7 @@ package com.jayway.jsonpath.internal.filter;
 
 import com.jayway.jsonpath.Filter;
 import com.jayway.jsonpath.InvalidPathException;
+import com.jayway.jsonpath.PathNotFoundException;
 import com.jayway.jsonpath.spi.JsonProvider;
 
 import java.util.LinkedList;
@@ -38,7 +39,7 @@ public class FieldFilter extends PathTokenFilter {
     public Object filter(Object obj, JsonProvider jsonProvider, LinkedList<Filter> filters, boolean inArrayContext) {
         if (jsonProvider.isList(obj)) {
             if (!inArrayContext) {
-                throw new InvalidPathException("Trying to access field on array");
+                throw new PathNotFoundException("Trying to access the field '" + condition +"' in an array context.");
             } else {
                 List<Object> result = jsonProvider.createList();
                 for (Object current : jsonProvider.toList(obj)) {
@@ -73,7 +74,7 @@ public class FieldFilter extends PathTokenFilter {
 
             Map<String, Object> map = jsonProvider.toMap(obj);
             if(!map.containsKey(condition) && split.length == 1){
-                throw new InvalidPathException("invalid path");
+                throw new PathNotFoundException("Path '" + condition + "' not found in the current context.");
             } else {
 
                 if(split.length == 1){
@@ -83,8 +84,6 @@ public class FieldFilter extends PathTokenFilter {
                     for (String prop : split) {
                         if(map.containsKey(prop)){
                             res.put(prop, map.get(prop));
-                        } else {
-                            throw new InvalidPathException("invalid path");
                         }
                     }
                     return res;

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

@@ -21,35 +21,15 @@ import com.jayway.jsonpath.spi.impl.JsonSmartJsonProvider;
  */
 public abstract class JsonProviderFactory {
 
-	private static Class defaultProvider = null;
+    private static JsonProvider provider = new JsonSmartJsonProvider();
-	
-    public static JsonProviderFactory factory = new JsonProviderFactory() {
-        @Override
-        protected JsonProvider create() {
-			JsonProvider provider = null;
-			try {
-				if(defaultProvider != null) {
-					provider = (JsonProvider)defaultProvider.newInstance();
-				}
-			} catch(Throwable t) {
-			
-			}
-			if(provider == null) {
-				provider = new JsonSmartJsonProvider();
-			}
-			return provider;
-            //return new JacksonProvider();
-        }
-    };
 
     public static JsonProvider createProvider() {
-        return factory.create();
+        return provider;
     }
 
-    public static synchronized void setDefaultProvider(Class<? extends JsonProvider> jsonProvider) {
+    public static synchronized void setProvider(JsonProvider jsonProvider) {
-        defaultProvider = jsonProvider;
+        provider = jsonProvider;
     }
 
-    protected abstract JsonProvider create();
 
 }

json-path/src/main/java/com/jayway/jsonpath/spi/impl/JsonSmartJsonProvider.java

@@ -37,6 +37,8 @@ public class JsonSmartJsonProvider extends AbstractJsonProvider {
 
     private JSONParser parser;
 
+    private ContainerFactory containerFactory = ContainerFactory.FACTORY_SIMPLE;
+
     public JsonSmartJsonProvider() {
         this(Mode.SLACK);
     }
@@ -47,16 +49,17 @@ public class JsonSmartJsonProvider extends AbstractJsonProvider {
     }
 
     public Map<String, Object> createMap() {
-        return new JSONObject();
+        return containerFactory.createObjectContainer();
     }
 
     public List<Object> createList() {
-        return new JSONArray();
+        return containerFactory.createArrayContainer();
     }
 
     public Object parse(String json) {
         try {
-            return parser.parse(json, ContainerFactory.FACTORY_ORDERED);
+            //return parser.parse(json, ContainerFactory.FACTORY_ORDERED);
+            return parser.parse(json, containerFactory);
         } catch (ParseException e) {
             throw new InvalidJsonException(e);
         }
@@ -65,7 +68,7 @@ public class JsonSmartJsonProvider extends AbstractJsonProvider {
     @Override
     public Object parse(Reader jsonReader) throws InvalidJsonException {
         try {
-            return parser.parse(jsonReader, ContainerFactory.FACTORY_ORDERED);
+            return parser.parse(jsonReader, containerFactory);
         } catch (ParseException e) {
             throw new InvalidJsonException(e);
         }
@@ -74,7 +77,7 @@ public class JsonSmartJsonProvider extends AbstractJsonProvider {
     @Override
     public Object parse(InputStream jsonStream) throws InvalidJsonException {
         try {
-            return parser.parse(new InputStreamReader(jsonStream), ContainerFactory.FACTORY_ORDERED);
+            return parser.parse(new InputStreamReader(jsonStream), containerFactory);
         } catch (ParseException e) {
             throw new InvalidJsonException(e);
         }

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

@@ -62,6 +62,20 @@ public class HelpTest {
             "                    \"mimeType\": \"application/octet-stream\"\n" +
             "                }\n" +
             "            ]\n" +
+            "        },\n" +
+            "        {\n" +
+            "            \"groupType\": \"series\",\n" +
+            "             \"instanceId\": \"grp://15\",\n" +
+            "             \"extra\": 1,\n" +
+            "             \"id\": \"prg://16\",\n" +
+            "            \"type\": \"group\",\n" +
+            "            \"media\": [\n" +
+            "                {\n" +
+            "                    \"classification\": \"urn:1.2.3\",\n" +
+            "                    \"uri\": \"http://yahoo.com/1.png\",\n" +
+            "                    \"mimeType\": \"application/octet-stream\"\n" +
+            "                }\n" +
+            "            ]\n" +
             "        }\n" +
             "    ],\n" +
             "    \"header\": {\n" +
@@ -71,7 +85,13 @@ public class HelpTest {
 
 
     @Test
-    public void sample_one_x(){
+    public void sample_one_a(){
+        System.out.println(JsonPath.read(JSON2, "$.['error', 'header']"));
+        System.out.println(JsonPath.read(JSON2, "$.contents[*].['groupType', 'type', 'extra']"));
+    }
+
+    @Test
+    public void sample_one_b(){
         System.out.println(JsonPath.read(JSON2, "$.['error', 'header']"));
         System.out.println(JsonPath.read(JSON2, "$.contents[*].['groupType', 'type']"));
     }

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

@@ -123,11 +123,23 @@ public class IssuesTest {
     }
 
 
+    @Test(expected = PathNotFoundException.class)
+    public void issue_22() throws Exception {
+        String json = "{\"a\":{\"b\":1,\"c\":2}}";
+        System.out.println(JsonPath.read(json, "a.d"));
+    }
 
     @Test
-    public void issue_22() throws Exception {
+    public void issue_22b() throws Exception {
         String json = "{\"a\":[{\"b\":1,\"c\":2},{\"b\":5,\"c\":2}]}";
         System.out.println(JsonPath.read(json, "a[?(@.b==5)].d"));
+        System.out.println(JsonPath.read(json, "a[?(@.b==5)].d"));
+    }
+
+    @Test(expected = PathNotFoundException.class)
+    public void issue_26() throws Exception {
+        String json = "[{\"a\":[{\"b\":1,\"c\":2}]}]";
+        Object o = JsonPath.read(json, "$.a");
     }
 
     @Test
@@ -139,5 +151,4 @@ public class IssuesTest {
     }
 
 
-
 }