// Update and return given train line with the Jackson parser
// AG
public static <T> TrainLine updateLine(T address, TrainLine line) {
try {
Object trainData = new Object();
if (address instanceof URL) {
// Get train data from web
trainData = mapper.readValue((URL) address, Object.class);
} else if (address instanceof File) {
// Get train data locally
trainData = mapper.readValue((File) address, Object.class);
}
// System.out.println(trainData.toString());
// Go inside the wrapper
Object tripListObj = getFromMap(trainData, TRIP_LIST_KEY);
line = new TrainLine(tripListObj);
} catch (JsonParseException e) {
e.printStackTrace();
} catch (JsonMappingException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
return line;
}
// [JACKSON-484]
public void testInetAddress() throws IOException {
InetAddress address = MAPPER.readValue(quote("127.0.0.1"), InetAddress.class);
assertEquals("127.0.0.1", address.getHostAddress());
// should we try resolving host names? That requires connectivity...
final String HOST = "google.com";
address = MAPPER.readValue(quote(HOST), InetAddress.class);
assertEquals(HOST, address.getHostName());
}
// for [JACKSON-652]
// @since 1.9
public void testUntypedWithJsonArrays() throws Exception {
// by default we get:
Object ob = MAPPER.readValue("[1]", Object.class);
assertTrue(ob instanceof List<?>);
// but can change to produce Object[]:
MAPPER.configure(DeserializationFeature.USE_JAVA_ARRAY_FOR_JSON_ARRAY, true);
ob = MAPPER.readValue("[1]", Object.class);
assertEquals(Object[].class, ob.getClass());
}
// [JACKSON-597]
public void testClass() throws IOException {
ObjectMapper mapper = new ObjectMapper();
assertSame(String.class, mapper.readValue(quote("java.lang.String"), Class.class));
// then primitive types
assertSame(Boolean.TYPE, mapper.readValue(quote("boolean"), Class.class));
assertSame(Byte.TYPE, mapper.readValue(quote("byte"), Class.class));
assertSame(Short.TYPE, mapper.readValue(quote("short"), Class.class));
assertSame(Character.TYPE, mapper.readValue(quote("char"), Class.class));
assertSame(Integer.TYPE, mapper.readValue(quote("int"), Class.class));
assertSame(Long.TYPE, mapper.readValue(quote("long"), Class.class));
assertSame(Float.TYPE, mapper.readValue(quote("float"), Class.class));
assertSame(Double.TYPE, mapper.readValue(quote("double"), Class.class));
assertSame(Void.TYPE, mapper.readValue(quote("void"), Class.class));
}
// [JACKSON-605]
public void testClassWithParams() throws IOException {
String json = MAPPER.writeValueAsString(new ParamClassBean("Foobar"));
ParamClassBean result = MAPPER.readValue(json, ParamClassBean.class);
assertEquals("Foobar", result.name);
assertSame(String.class, result.clazz);
}
public static <T> T fromJson(String json, Class<T> type) {
try {
return OBJECT_MAPPER.readValue(json, type);
} catch (IOException e) {
throw new IllegalArgumentException("Unable to parse json", e);
}
}
@SuppressWarnings("unchecked")
public static LelyFeedEvent fromJson(String json) {
try {
return new LelyFeedEvent((Map<String, Object>) jsonMapper.readValue(json, Map.class));
} catch (Exception e) {
throw new SamzaException(e);
}
}
/** Related to issues [JACKSON-155], [#170]. */
public void testFile() throws Exception {
// Not portable etc... has to do:
File src = new File("/test").getAbsoluteFile();
String abs = src.getAbsolutePath();
// escape backslashes (for portability with windows)
String json = MAPPER.writeValueAsString(abs);
File result = MAPPER.readValue(json, File.class);
assertEquals(abs, result.getAbsolutePath());
// Then #170
final ObjectMapper mapper2 = new ObjectMapper();
mapper2.setVisibility(PropertyAccessor.CREATOR, Visibility.NONE);
result = mapper2.readValue(json, File.class);
assertEquals(abs, result.getAbsolutePath());
}
public void testForJackson288() throws Exception {
final long TIMESTAMP = 12345678L;
ObjectMapper mapper = getJaxbMapper();
Bean288 bean = mapper.readValue("{\"date\":" + TIMESTAMP + "}", Bean288.class);
assertNotNull(bean);
Date d = bean.date;
assertNotNull(d);
assertEquals(TIMESTAMP, d.getTime());
}
public void testMapError() throws Exception {
ObjectMapper mapper = new ObjectMapper();
try {
Object result = mapper.readValue("[ 1, 2 ]", new TypeReference<Map<String, String>>() {});
fail("Expected an exception, but got result value: " + result);
} catch (JsonMappingException jex) {
verifyException(jex, "START_ARRAY");
}
}
/** tests getting serializer/deserializer instances. */
public void testSerializeDeserializeWithJaxbAnnotations() throws Exception {
ObjectMapper mapper = getJaxbMapper();
// test expects that wrapper name be used...
mapper.enable(MapperFeature.USE_WRAPPER_NAME_AS_PROPERTY_NAME);
mapper.enable(SerializationFeature.INDENT_OUTPUT);
JaxbExample ex = new JaxbExample();
QName qname = new QName("urn:hi", "hello");
ex.setQname(qname);
QName qname1 = new QName("urn:hi", "hello1");
ex.setQname1(qname1);
ex.setAttributeProperty("attributeValue");
ex.setElementProperty("elementValue");
ex.setWrappedElementProperty(Arrays.asList("wrappedElementValue"));
ex.setEnumProperty(EnumExample.VALUE1);
ex.setPropertyToIgnore("ignored");
String json = mapper.writeValueAsString(ex);
// uncomment to see what the JSON looks like.
// System.out.println(json);
// make sure the json is written out correctly.
JsonNode node = mapper.readValue(json, JsonNode.class);
assertEquals(qname.toString(), node.get("qname").asText());
JsonNode attr = node.get("myattribute");
assertNotNull(attr);
assertEquals("attributeValue", attr.asText());
assertEquals("elementValue", node.get("myelement").asText());
assertTrue(node.has("mywrapped"));
assertEquals(1, node.get("mywrapped").size());
assertEquals("wrappedElementValue", node.get("mywrapped").get(0).asText());
assertEquals("Value One", node.get("enumProperty").asText());
assertNull(node.get("propertyToIgnore"));
// now make sure it gets deserialized correctly.
JaxbExample readEx = mapper.readValue(json, JaxbExample.class);
assertEquals(ex.qname, readEx.qname);
assertEquals(ex.qname1, readEx.qname1);
assertEquals(ex.attributeProperty, readEx.attributeProperty);
assertEquals(ex.elementProperty, readEx.elementProperty);
assertEquals(ex.wrappedElementProperty, readEx.wrappedElementProperty);
assertEquals(ex.enumProperty, readEx.enumProperty);
assertNull(readEx.propertyToIgnore);
}
// Test for verifying that Long values are coerced to boolean correctly as well
public void testLongToBoolean() throws Exception {
long value = 1L + Integer.MAX_VALUE;
BooleanBean b =
MAPPER.readValue(
"{\"primitive\" : " + value + ", \"wrapper\":" + value + ", \"ctor\":" + value + "}",
BooleanBean.class);
assertEquals(Boolean.TRUE, b.wrapper);
assertTrue(b.primitive);
assertEquals(Boolean.TRUE, b.ctor);
}
public void testRegexps() throws IOException {
final String PATTERN_STR = "abc:\\s?(\\d+)";
Pattern exp = Pattern.compile(PATTERN_STR);
/* Ok: easiest way is to just serialize first; problem
* is the backslash
*/
String json = MAPPER.writeValueAsString(exp);
Pattern result = MAPPER.readValue(json, Pattern.class);
assertEquals(exp.pattern(), result.pattern());
}
public void testInetSocketAddress() throws IOException {
InetSocketAddress address = MAPPER.readValue(quote("127.0.0.1"), InetSocketAddress.class);
assertEquals("127.0.0.1", address.getAddress().getHostAddress());
InetSocketAddress ip6 =
MAPPER.readValue(quote("2001:db8:85a3:8d3:1319:8a2e:370:7348"), InetSocketAddress.class);
assertEquals("2001:db8:85a3:8d3:1319:8a2e:370:7348", ip6.getAddress().getHostAddress());
InetSocketAddress ip6port =
MAPPER.readValue(
quote("[2001:db8:85a3:8d3:1319:8a2e:370:7348]:443"), InetSocketAddress.class);
assertEquals("2001:db8:85a3:8d3:1319:8a2e:370:7348", ip6port.getAddress().getHostAddress());
assertEquals(443, ip6port.getPort());
// should we try resolving host names? That requires connectivity...
final String HOST = "www.ning.com";
address = MAPPER.readValue(quote(HOST), InetSocketAddress.class);
assertEquals(HOST, address.getHostName());
}
public void testNoCtorMap() throws Exception {
ObjectMapper mapper = new ObjectMapper();
try {
BrokenMap result = mapper.readValue("{ \"a\" : 3 }", BrokenMap.class);
// should never get here; assert added to remove compiler warning
assertNull(result);
} catch (JsonMappingException e) {
// instead, should get this exception:
verifyException(e, "no default constructor found");
}
}
public void testPolymorphicAtomicRefProperty() throws Exception {
TypeInfoAtomic data = new TypeInfoAtomic();
data.value = new AtomicReference<BaseForAtomic>(new ImplForAtomic(42));
String json = MAPPER.writeValueAsString(data);
TypeInfoAtomic result = MAPPER.readValue(json, TypeInfoAtomic.class);
assertNotNull(result);
BaseForAtomic value = result.value.get();
assertNotNull(value);
assertEquals(ImplForAtomic.class, value.getClass());
assertEquals(42, ((ImplForAtomic) value).x);
}
// [Issue#239]
public void testByteBuffer() throws Exception {
byte[] INPUT = new byte[] {1, 3, 9, -1, 6};
String exp = MAPPER.writeValueAsString(INPUT);
ByteBuffer result = MAPPER.readValue(exp, ByteBuffer.class);
assertNotNull(result);
assertEquals(INPUT.length, result.remaining());
for (int i = 0; i < INPUT.length; ++i) {
assertEquals(INPUT[i], result.get());
}
assertEquals(0, result.remaining());
}
public void testAtomicRefViaDefaultTyping() throws Exception {
ObjectMapper mapper = new ObjectMapper();
mapper.enableDefaultTyping(DefaultTyping.NON_FINAL);
AtomicStringWrapper data = new AtomicStringWrapper("foo");
String json = mapper.writerWithDefaultPrettyPrinter().writeValueAsString(data);
AtomicStringWrapper result = mapper.readValue(json, AtomicStringWrapper.class);
assertNotNull(result);
assertNotNull(result.wrapper);
assertEquals(AtomicReference.class, result.wrapper.getClass());
StringWrapper w = result.wrapper.get();
assertEquals("foo", w.str);
}
/** Unit test for [JACKSON-185] */
public void testUntypedMap3() throws Exception {
String JSON = "{\"a\":[{\"a\":\"b\"},\"value\"]}";
ObjectMapper m = new ObjectMapper();
Map<?, ?> result = m.readValue(JSON, Map.class);
assertTrue(result instanceof Map<?, ?>);
assertEquals(1, result.size());
Object ob = result.get("a");
assertNotNull(ob);
Collection<?> list = (Collection<?>) ob;
assertEquals(2, list.size());
JSON =
"{ \"var1\":\"val1\", \"var2\":\"val2\", "
+ "\"subvars\": ["
+ " { \"subvar1\" : \"subvar2\", \"x\" : \"y\" }, "
+ " { \"a\":1 } ]"
+ " }";
result = m.readValue(JSON, Map.class);
assertTrue(result instanceof Map<?, ?>);
assertEquals(3, result.size());
}
// [JACKSON-726]
public void testUUIDKeyMap() throws Exception {
ObjectMapper mapper = new ObjectMapper();
UUID key = UUID.nameUUIDFromBytes("foobar".getBytes("UTF-8"));
String JSON = "{ \"" + key + "\":4}";
Map<UUID, Object> result = mapper.readValue(JSON, new TypeReference<Map<UUID, Object>>() {});
assertNotNull(result);
assertEquals(1, result.size());
Object ob = result.keySet().iterator().next();
assertNotNull(ob);
assertEquals(UUID.class, ob.getClass());
assertEquals(key, ob);
}
public void testSimpleKeyDeser() throws Exception {
ObjectMapper mapper = new ObjectMapper();
SimpleModule module = new SimpleModule("test", Version.unknownVersion());
module.addKeyDeserializer(String.class, new ContextualDeser("???"));
mapper.registerModule(module);
MapBean result = mapper.readValue("{\"map\":{\"a\":3}}", MapBean.class);
Map<String, Integer> map = result.map;
assertNotNull(map);
assertEquals(1, map.size());
Map.Entry<String, Integer> entry = map.entrySet().iterator().next();
assertEquals(Integer.valueOf(3), entry.getValue());
assertEquals("map:a", entry.getKey());
}
public void testExactStringStringMap() throws Exception {
ObjectMapper mapper = new ObjectMapper();
// to get typing, must use type reference
String JSON = "{ \"a\" : \"b\" }";
Map<String, Integer> result =
mapper.readValue(JSON, new TypeReference<TreeMap<String, String>>() {});
assertNotNull(result);
assertEquals(TreeMap.class, result.getClass());
assertEquals(1, result.size());
assertEquals("b", result.get("a"));
assertNull(result.get("b"));
}
/**
* Simple test to verify that byte[] values can be handled properly when converting, as long as
* there is metadata (from POJO definitions).
*/
public void testIssue709() throws Exception {
byte[] inputData = new byte[] {1, 2, 3};
ObjectNode node = MAPPER.createObjectNode();
node.put("data", inputData);
Issue709Bean result = MAPPER.treeToValue(node, Issue709Bean.class);
String json = MAPPER.writeValueAsString(node);
Issue709Bean resultFromString = MAPPER.readValue(json, Issue709Bean.class);
Issue709Bean resultFromConvert = MAPPER.convertValue(node, Issue709Bean.class);
// all methods should work equally well:
Assert.assertArrayEquals(inputData, resultFromString.data);
Assert.assertArrayEquals(inputData, resultFromConvert.data);
Assert.assertArrayEquals(inputData, result.data);
}
/**
* Let's also try another way to express "gimme a Map" deserialization; this time by specifying a
* Map class, to reduce need to cast
*/
public void testUntypedMap2() throws Exception {
ObjectMapper mapper = new ObjectMapper();
// to get "untyped" default map-to-map, pass Object.class
String JSON = "{ \"a\" : \"x\" }";
@SuppressWarnings("unchecked")
HashMap<String, Object> result = /*(HashMap<String,Object>)*/
mapper.readValue(JSON, HashMap.class);
assertNotNull(result);
assertTrue(result instanceof Map<?, ?>);
assertEquals(1, result.size());
assertEquals("x", result.get("a"));
}
public void testMapWithEnums() throws Exception {
ObjectMapper mapper = new ObjectMapper();
String JSON = "{ \"KEY2\" : \"WHATEVER\" }";
// to get typing, must use type reference
Map<Enum<?>, Enum<?>> result = mapper.readValue(JSON, new TypeReference<Map<Key, Key>>() {});
assertNotNull(result);
assertTrue(result instanceof Map<?, ?>);
assertEquals(1, result.size());
assertEquals(Key.WHATEVER, result.get(Key.KEY2));
assertNull(result.get(Key.WHATEVER));
assertNull(result.get(Key.KEY1));
}
public void testXmlElementTypeDeser() throws Exception {
ObjectMapper mapper = getJaxbMapper();
SimpleNamed originalModel = new SimpleNamed();
originalModel.setName("Foobar");
String json = mapper.writeValueAsString(originalModel);
SimpleNamed result = null;
try {
result = mapper.readValue(json, SimpleNamed.class);
} catch (Exception ie) {
fail("Failed to deserialize '" + json + "': " + ie.getMessage());
}
if (!"Foobar".equals(result.name)) {
fail("Failed, JSON == '" + json + "')");
}
}
/**
* Unit test that verifies that it's ok to have incomplete information about Map class itself, as
* long as it's something we good guess about: for example, <code>Map.Class</code> will be
* replaced by something like <code>HashMap.class</code>, if given.
*/
public void testGenericStringIntMap() throws Exception {
ObjectMapper mapper = new ObjectMapper();
// to get typing, must use type reference; but with abstract type
String JSON = "{ \"a\" : 1, \"b\" : 2, \"c\" : -99 }";
Map<String, Integer> result =
mapper.readValue(JSON, new TypeReference<Map<String, Integer>>() {});
assertNotNull(result);
assertTrue(result instanceof Map<?, ?>);
assertEquals(3, result.size());
assertEquals(Integer.valueOf(-99), result.get("c"));
assertEquals(Integer.valueOf(2), result.get("b"));
assertEquals(Integer.valueOf(1), result.get("a"));
assertNull(result.get(""));
}
/**
* Let's also check that it is possible to do type conversions to allow use of non-String Map
* keys.
*/
public void testIntBooleanMap() throws Exception {
ObjectMapper mapper = new ObjectMapper();
// to get typing, must use type reference
String JSON = "{ \"1\" : true, \"-1\" : false }";
Map<String, Integer> result =
mapper.readValue(JSON, new TypeReference<HashMap<Integer, Boolean>>() {});
assertNotNull(result);
assertEquals(HashMap.class, result.getClass());
assertEquals(2, result.size());
assertEquals(Boolean.TRUE, result.get(Integer.valueOf(1)));
assertEquals(Boolean.FALSE, result.get(Integer.valueOf(-1)));
assertNull(result.get("foobar"));
assertNull(result.get(0));
}
// [JACKSON-888]
public void testStackTraceElement() throws Exception {
StackTraceElement elem = null;
try {
throw new IllegalStateException();
} catch (Exception e) {
elem = e.getStackTrace()[0];
}
String json = MAPPER.writeValueAsString(elem);
StackTraceElement back = MAPPER.readValue(json, StackTraceElement.class);
assertEquals("testStackTraceElement", back.getMethodName());
assertEquals(elem.getLineNumber(), back.getLineNumber());
assertEquals(elem.getClassName(), back.getClassName());
assertEquals(elem.isNativeMethod(), back.isNativeMethod());
assertTrue(back.getClassName().endsWith("TestJdkTypes"));
assertFalse(back.isNativeMethod());
}
public void testExactStringIntMap() throws Exception {
ObjectMapper mapper = new ObjectMapper();
// to get typing, must use type reference
String JSON = "{ \"foo\" : 13, \"bar\" : -39, \n \"\" : 0 }";
Map<String, Integer> result =
mapper.readValue(JSON, new TypeReference<HashMap<String, Integer>>() {});
assertNotNull(result);
assertEquals(HashMap.class, result.getClass());
assertEquals(3, result.size());
assertEquals(Integer.valueOf(13), result.get("foo"));
assertEquals(Integer.valueOf(-39), result.get("bar"));
assertEquals(Integer.valueOf(0), result.get(""));
assertNull(result.get("foobar"));
assertNull(result.get(" "));
}