Add RFC6901 json pointer support

now Path can convert RFC6901 style path to json path
for example
Path.ofJosnPointer("/abc/0") can convert to Path.of(".abc.[0]")

Author: leonchen83

src/main/java/com/redislabs/modules/rejson/Path.java

@@ -60,7 +60,7 @@ public static Path of(final String strPath) {
         return new Path(strPath);
     }
 
-    public static Path ofJosnPointer(final String strPath) {
+    public static Path ofJsonPointer(final String strPath) {
         return new Path(parse(strPath));
     }
 
@@ -111,9 +111,9 @@ private static String parse(String path) {
                     builder.append('~');
                 }
                 if (builder.length() > 0 && num) {
-                    r.append(".[" + builder + "]");
+                    r.append(".[" + builder.toString() + "]");
                 } else {
-                    r.append("." + builder);
+                    r.append("." + builder.toString());
                 }
                 num = true;
                 builder.setLength(0);
@@ -153,9 +153,9 @@ private static String parse(String path) {
         }
         if (builder.length() > 0) {
             if (num) {
-                r.append(".[" + builder + "]");
+                r.append(".[" + builder.toString() + "]");
             } else {
-                r.append("." + builder);
+                r.append("." + builder.toString());
             }
         }
         return r.toString();

src/test/java/com/redislabs/modules/rejson/PathTest.java

@@ -34,17 +34,19 @@ public void testPathHashCode() {
 
     @Test
     public void testJsonPointer() {
-        assertEquals(Path.ofJosnPointer("/"), Path.ROOT_PATH);
-        assertEquals(Path.ofJosnPointer("/a/b/c"), Path.of(".a.b.c"));
-        assertEquals(Path.ofJosnPointer("/a/0/c"), Path.of(".a.[0].c"));
-        assertEquals(Path.ofJosnPointer("/a/0b/c"), Path.of(".a.0b.c"));
-        assertEquals(Path.ofJosnPointer("/ab/cd/1010"), Path.of(".ab.cd.[1010]"));
-        assertEquals(Path.ofJosnPointer("/a/b/c").hashCode(), Path.of(".a.b.c").hashCode());
+        assertEquals(Path.ofJsonPointer("/"), Path.ROOT_PATH);
+        assertEquals(Path.ofJsonPointer("/a/b/c"), Path.of(".a.b.c"));
+        assertEquals(Path.ofJsonPointer("/a/0/c"), Path.of(".a.[0].c"));
+        assertEquals(Path.ofJsonPointer("/a/0b/c"), Path.of(".a.0b.c"));
+        assertEquals(Path.ofJsonPointer("/ab/cd/1010"), Path.of(".ab.cd.[1010]"));
+        assertEquals(Path.ofJsonPointer("/a/b/c").hashCode(), Path.of(".a.b.c").hashCode());
 
         //escape test
-        assertEquals(Path.ofJosnPointer("/a/~0/c"), Path.of(".a.~.c"));
-        assertEquals(Path.ofJosnPointer("/a/~1/c"), Path.of(".a./.c"));
-        assertEquals(Path.ofJosnPointer("/a/~~/c"), Path.of(".a.~~.c"));
-        assertEquals(Path.ofJosnPointer("/~/~~~/~~"), Path.of(".~.~~~.~~"));
+        assertEquals(Path.ofJsonPointer("/a/~0/c"), Path.of(".a.~.c"));
+        assertEquals(Path.ofJsonPointer("/a/~1/c"), Path.of(".a./.c"));
+        assertEquals(Path.ofJsonPointer("/a/~~/c"), Path.of(".a.~~.c"));
+        assertEquals(Path.ofJsonPointer("/~/~~~/~~"), Path.of(".~.~~~.~~"));
+        assertEquals(Path.ofJsonPointer("/~/~~~0/~~"), Path.of(".~.~~~.~~"));
+        assertEquals(Path.ofJsonPointer("/~/'.'/~~"), Path.of(".~.'.'.~~"));
     }
 }