Examples of org.quickconnectfamily.json.JSONInputStream

org.quickconnectfamily.json.JSONInputStream

The JSONInputStream class is used when you want to read JSON from any type of InputStream such as a FileInputStream or a SocketInputStream. If you want to convert JSON string to the appropriate Object and Array representations use the JSONUtilities.parse methods instead.

When your JSON is being parsed any JSON objects that it finds will be converted to HashMaps and any arrays found will be converted to ArrayLists. All keys and values in the HashMaps generated are Strings and all values in the ArrayLists generated are Strings.

Example 1 JSON: ["1", "hello", {"name":"fred","age":"23"}]
Example 1 Result: An ArrayList with three values: a String "1", a String "hello", and a HashMap as the third value in the ArrayList. This HashMap has two key/value pairs: "name"/"fred" and "age"/"23".

Example 2 JSON: {"state":"Idaho", "city":"Rexburg", "people":["bob","sue"]}
Example 2 Result: A HashMap with three key/value pairs: "state"/"Idaho", "city"/"Rexburg", and "people"/ArrayList. The ArrayList that is the value for the "people" key has two String values "bob" and "sue".

While these examples only show two levels of depth your JSON string can go to any depth level. You can have any combination of arrays, objects, sub-arrays, and sub-objects. @author Lee S. Barney


    String aJSONString = "{\"aNumber\":\"16.5\",\"stringOne\":\"Some sort of string\",\"20\":\"some other stuff\",\"aTester\":{\"stringAtt\":\"hello\",\"doubleAtt\":\"-4.5\",\"doubleObjAtt\":\"1000.567789\",\"listAtt\":[\"7\",\"hello there from list\"],\"parentString\":\"In The Parent\"}}\n";


    byte[] byteArray = aJSONString.getBytes(); 
    ByteArrayInputStream theByteStream = new ByteArrayInputStream(byteArray);
    JSONInputStream aJSONInputStream = new JSONInputStream(theByteStream);
    Class<?> theJSONInputStreamClass = aJSONInputStream.getClass();


      try {
      Field theParserField = theJSONInputStreamClass.getDeclaredField("aParser");
      theParserField.setAccessible(true);
      assertNotNull(theParserField.get(aJSONInputStream));

    try {
      PrintWriter fileWriter = new PrintWriter(new FileOutputStream(multiObjectFile));
      fileWriter.println("{\"name\":\"Bob\",\"age\":27}[7,16,0 -4]");
      fileWriter.flush();


      JSONInputStream jsonIn = new JSONInputStream(new FileInputStream(multiObjectFile));


      /*
       * Read the first object from the file
       */
      Object aPossibleMap = jsonIn.readObject();
      assertEquals(HashMap.class, aPossibleMap.getClass());
      HashMap aMap = (HashMap)aPossibleMap;
      assertEquals("Bob", aMap.get("name"));
      assertEquals((long)27, aMap.get("age"));
      
      /*
       * Test if a second entry be read correctly?
       */
      Object aPossibleArrayList = jsonIn.readObject();
      assertEquals(ArrayList.class, aPossibleArrayList.getClass());
      ArrayList anArrayList = (ArrayList)aPossibleArrayList;
      
      
    } catch (Exception e) {

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