Examples with JsonParser javax.json.stream.JsonParser used on opensource projects

Example 26 with JsonParser

use of javax.json.stream.JsonParser in project tutorials by eugenp.

the class JsonUnitTest method whenUsingStreamingApiToQueryForSpecificProperty_thenExpectedValueIsReturned.

@Test
public void whenUsingStreamingApiToQueryForSpecificProperty_thenExpectedValueIsReturned() throws IOException, ParseException {
    JsonParser jsonParser = Json.createParser(new StringReader(petshopJson));
    int count = 0;
    String result = null;
    while (jsonParser.hasNext()) {
        Event e = jsonParser.next();
        if (e == Event.KEY_NAME) {
            if (jsonParser.getString().equals("name")) {
                jsonParser.next();
                if (++count == 3) {
                    result = jsonParser.getString();
                    break;
                }
            }
        }
    }
    assertEquals("The query should return the 'name' property of the third pet from the list", "Jake", result);
}

Example 27 with JsonParser

use of javax.json.stream.JsonParser in project javaee7-samples by javaee-samples.

the class JsonParserFromStreamTest method testSimpleObject.

@Test
public void testSimpleObject() throws JSONException {
    JsonParser parser = Json.createParser(Thread.currentThread().getContextClassLoader().getResourceAsStream("/2.json"));
    assertEquals(JsonParser.Event.START_OBJECT, parser.next());
    assertEquals(JsonParser.Event.KEY_NAME, parser.next());
    assertEquals(JsonParser.Event.VALUE_STRING, parser.next());
    assertEquals(JsonParser.Event.KEY_NAME, parser.next());
    assertEquals(JsonParser.Event.VALUE_STRING, parser.next());
    assertEquals(JsonParser.Event.END_OBJECT, parser.next());
}

Example 28 with JsonParser

use of javax.json.stream.JsonParser in project javaee7-samples by javaee-samples.

the class JsonParserFromStreamTest method testNestedStructure.

@Test
public void testNestedStructure() throws JSONException {
    JsonParser parser = Json.createParser(Thread.currentThread().getContextClassLoader().getResourceAsStream("/4.json"));
    assertEquals(JsonParser.Event.START_OBJECT, parser.next());
    assertEquals(JsonParser.Event.KEY_NAME, parser.next());
    assertEquals(JsonParser.Event.VALUE_STRING, parser.next());
    assertEquals(JsonParser.Event.KEY_NAME, parser.next());
    assertEquals(JsonParser.Event.VALUE_NUMBER, parser.next());
    assertEquals(JsonParser.Event.KEY_NAME, parser.next());
    assertEquals(JsonParser.Event.START_ARRAY, parser.next());
    assertEquals(JsonParser.Event.VALUE_STRING, parser.next());
    assertEquals(JsonParser.Event.VALUE_STRING, parser.next());
    assertEquals(JsonParser.Event.VALUE_STRING, parser.next());
    assertEquals(JsonParser.Event.END_ARRAY, parser.next());
    assertEquals(JsonParser.Event.END_OBJECT, parser.next());
}

Example 29 with JsonParser

use of javax.json.stream.JsonParser in project javaee7-samples by javaee-samples.

the class JsonParserFromStreamTest method testEmptyObject.

@Test
public void testEmptyObject() throws JSONException {
    JsonParser parser = Json.createParser(Thread.currentThread().getContextClassLoader().getResourceAsStream("/1.json"));
    assertEquals(JsonParser.Event.START_OBJECT, parser.next());
    assertEquals(JsonParser.Event.END_OBJECT, parser.next());
}

Example 30 with JsonParser

use of javax.json.stream.JsonParser in project javaee7-samples by javaee-samples.

the class JsonParserFromStreamTest method testArray.

@Test
public void testArray() throws JSONException {
    JsonParser parser = Json.createParser(Thread.currentThread().getContextClassLoader().getResourceAsStream("/3.json"));
    assertEquals(JsonParser.Event.START_ARRAY, parser.next());
    assertEquals(JsonParser.Event.START_OBJECT, parser.next());
    assertEquals(JsonParser.Event.KEY_NAME, parser.next());
    assertEquals(JsonParser.Event.VALUE_STRING, parser.next());
    assertEquals(JsonParser.Event.END_OBJECT, parser.next());
    assertEquals(JsonParser.Event.START_OBJECT, parser.next());
    assertEquals(JsonParser.Event.KEY_NAME, parser.next());
    assertEquals(JsonParser.Event.VALUE_STRING, parser.next());
    assertEquals(JsonParser.Event.END_OBJECT, parser.next());
    assertEquals(JsonParser.Event.END_ARRAY, parser.next());
}