>();
Constructor ctor = null;
if (className.contains("$")) {
- Object javaParent = createObject(className.substring(0,
- className.lastIndexOf('$')));
- args = new Object[] { javaParent };
- ctor = clazz.getDeclaredConstructor(new Class[] { javaParent
- .getClass() });
+ for (String parentName = className.substring(0,
+ className.lastIndexOf('$'));; parentName = parentName
+ .substring(0, parentName.lastIndexOf('$'))) {
+ Object parent = createObject(parentName);
+ args.add(parent);
+ classes.add(parent.getClass());
+
+ if (!parentName.contains("$")) {
+ break;
+ }
+ }
+
+ // Better error description in case there is no empty
+ // constructor:
+ desc = "";
+ String end = "";
+ for (Class parent = clazz; parent != null
+ && !parent.equals(Object.class); parent = parent
+ .getSuperclass()) {
+ if (!desc.isEmpty()) {
+ desc += " [:";
+ end += "]";
+ }
+ desc += parent;
+ }
+ desc += end;
+ //
+
+ try {
+ ctor = clazz.getDeclaredConstructor(classes
+ .toArray(new Class[] {}));
+ } catch (NoSuchMethodException nsme) {
+ // TODO: it seems we do not always need a parameter for each
+ // level, so we currently try "ALL" levels or "FIRST" level
+ // only -> we should check the actual rule and use it
+ ctor = clazz.getDeclaredConstructor(classes.get(0));
+ Object firstParent = args.get(0);
+ args.clear();
+ args.add(firstParent);
+ }
+ desc = null;
} else {
- args = new Object[] {};
ctor = clazz.getDeclaredConstructor();
}
ctor.setAccessible(true);
- return ctor.newInstance(args);
+ return ctor.newInstance(args.toArray());
} catch (ClassNotFoundException e) {
throw e;
} catch (NoSuchMethodException e) {
+ if (desc != null) {
+ throw new NoSuchMethodException("Empty constructor not found: "
+ + desc);
+ }
throw e;
} catch (Exception e) {
throw new NoSuchMethodException("Cannot instantiate: " + type);
@@ -165,14 +294,14 @@ public class SerialUtils {
}
/**
- * Serialise the given object into this {@link StringBuilder}.
+ * Serialise the given object into this {@link OutputStream}.
*
* Important: If the operation fails (with a
* {@link NotSerializableException}), the {@link StringBuilder} will be
* corrupted (will contain bad, most probably not importable data).
*
- * @param builder
- * the output {@link StringBuilder} to serialise to
+ * @param out
+ * the output {@link OutputStream} to serialise to
* @param o
* the object to serialise
* @param map
@@ -184,9 +313,11 @@ public class SerialUtils {
* if the object cannot be serialised (in this case, the
* {@link StringBuilder} can contain bad, most probably not
* importable data)
+ * @throws IOException
+ * in case of I/O errors
*/
- static void append(StringBuilder builder, Object o, Map map)
- throws NotSerializableException {
+ static void append(OutputStream out, Object o, Map map)
+ throws NotSerializableException, IOException {
Field[] fields = new Field[] {};
String type = "";
@@ -197,10 +328,8 @@ public class SerialUtils {
fields = o.getClass().getDeclaredFields();
type = o.getClass().getCanonicalName();
if (type == null) {
- throw new NotSerializableException(
- String.format(
- "Cannot find the class for this object: %s (it could be an inner class, which is not supported)",
- o));
+ // Anonymous inner classes support
+ type = o.getClass().getName();
}
id = Integer.toString(hash);
if (map.containsKey(hash)) {
@@ -210,9 +339,13 @@ public class SerialUtils {
}
}
- builder.append("{\nREF ").append(type).append("@").append(id)
- .append(":");
- if (!encode(builder, o)) { // check if direct value
+ write(out, "{\nREF ");
+ write(out, type);
+ write(out, "@");
+ write(out, id);
+ write(out, ":");
+
+ if (!encode(out, o)) { // check if direct value
try {
for (Field field : fields) {
field.setAccessible(true);
@@ -226,16 +359,15 @@ public class SerialUtils {
continue;
}
- builder.append("\n");
- builder.append(field.getName());
- builder.append(":");
- Object value;
+ write(out, "\n");
+ write(out, field.getName());
+ write(out, ":");
- value = field.get(o);
+ Object value = field.get(o);
- if (!encode(builder, value)) {
- builder.append("\n");
- append(builder, value, map);
+ if (!encode(out, value)) {
+ write(out, "\n");
+ append(out, value, map);
}
}
} catch (IllegalArgumentException e) {
@@ -245,42 +377,72 @@ public class SerialUtils {
e.printStackTrace(); // should not happen (see
// setAccessible)
}
+
+ write(out, "\n}");
}
- builder.append("\n}");
}
- // return true if encoded (supported)
- static boolean encode(StringBuilder builder, Object value) {
+ /**
+ * Encode the object into the given {@link OutputStream} if possible and if
+ * supported.
+ *
+ * A supported object in this context means an object we can directly
+ * encode, like an Integer or a String. Custom objects and arrays are also
+ * considered supported, but compound objects are not supported here.
+ *
+ * For compound objects, you should use {@link Exporter}.
+ *
+ * @param out
+ * the {@link OutputStream} to append to
+ * @param value
+ * the object to encode (can be NULL, which will be encoded)
+ *
+ * @return TRUE if success, FALSE if not (the content of the
+ * {@link OutputStream} won't be changed in case of failure)
+ *
+ * @throws IOException
+ * in case of I/O error
+ */
+ static boolean encode(OutputStream out, Object value) throws IOException {
if (value == null) {
- builder.append("NULL");
- } else if (value.getClass().getCanonicalName().endsWith("[]")) {
- customTypes.get("[]").encode(builder, value);
+ write(out, "NULL");
+ } else if (value.getClass().getSimpleName().endsWith("[]")) {
+ // Simple name does support [] suffix and do not return NULL for
+ // inner anonymous classes
+ customTypes.get("[]").encode(out, value);
} else if (customTypes.containsKey(value.getClass().getCanonicalName())) {
customTypes.get(value.getClass().getCanonicalName())//
- .encode(builder, value);
+ .encode(out, value);
} else if (value instanceof String) {
- encodeString(builder, (String) value);
+ encodeString(out, (String) value);
} else if (value instanceof Boolean) {
- builder.append(value);
+ write(out, value);
} else if (value instanceof Byte) {
- builder.append(value).append('b');
+ write(out, value);
+ write(out, "b");
} else if (value instanceof Character) {
- encodeString(builder, "" + value);
- builder.append('c');
+ encodeString(out, "" + value);
+ write(out, "c");
} else if (value instanceof Short) {
- builder.append(value).append('s');
+ write(out, value);
+ write(out, "s");
} else if (value instanceof Integer) {
- builder.append(value);
+ write(out, value);
} else if (value instanceof Long) {
- builder.append(value).append('L');
+ write(out, value);
+ write(out, "L");
} else if (value instanceof Float) {
- builder.append(value).append('F');
+ write(out, value);
+ write(out, "F");
} else if (value instanceof Double) {
- builder.append(value).append('d');
+ write(out, value);
+ write(out, "d");
} else if (value instanceof Enum) {
String type = value.getClass().getCanonicalName();
- builder.append(type).append(".").append(((Enum) value).name())
- .append(";");
+ write(out, type);
+ write(out, ".");
+ write(out, ((Enum) value).name());
+ write(out, ";");
} else {
return false;
}
@@ -288,48 +450,94 @@ public class SerialUtils {
return true;
}
- static Object decode(String encodedValue) {
- String cut = "";
- if (encodedValue.length() > 1) {
- cut = encodedValue.substring(0, encodedValue.length() - 1);
- }
+ /**
+ * Decode the data into an equivalent supported source object.
+ *
+ * A supported object in this context means an object we can directly
+ * encode, like an Integer or a String. Custom objects and arrays are also
+ * considered supported, but compound objects are not supported here.
+ *
+ * For compound objects, you should use {@link Importer}.
+ *
+ * @param encodedValue
+ * the encoded data, cannot be NULL
+ *
+ * @return the object (can be NULL for NULL encoded values)
+ *
+ * @throws IOException
+ * if the content cannot be converted
+ */
+ static Object decode(String encodedValue) throws IOException {
+ try {
+ String cut = "";
+ if (encodedValue.length() > 1) {
+ cut = encodedValue.substring(0, encodedValue.length() - 1);
+ }
- if (CustomSerializer.isCustom(encodedValue)) {
- // custom:TYPE_NAME:"content is String-encoded"
- String type = CustomSerializer.typeOf(encodedValue);
- if (customTypes.containsKey(type)) {
- return customTypes.get(type).decode(encodedValue);
+ if (CustomSerializer.isCustom(encodedValue)) {
+ // custom:TYPE_NAME:"content is String-encoded"
+ String type = CustomSerializer.typeOf(encodedValue);
+ if (customTypes.containsKey(type)) {
+ // TODO: we should start with a stream
+ InputStream streamEncodedValue = new ByteArrayInputStream(
+ StringUtils.getBytes(encodedValue));
+ try {
+ return customTypes.get(type).decode(streamEncodedValue);
+ } finally {
+ streamEncodedValue.close();
+ }
+ }
+ throw new IOException("Unknown custom type: " + type);
+ } else if (encodedValue.equals("NULL")
+ || encodedValue.equals("null")) {
+ return null;
+ } else if (encodedValue.endsWith("\"")) {
+ return decodeString(encodedValue);
+ } else if (encodedValue.equals("true")) {
+ return true;
+ } else if (encodedValue.equals("false")) {
+ return false;
+ } else if (encodedValue.endsWith("b")) {
+ return Byte.parseByte(cut);
+ } else if (encodedValue.endsWith("c")) {
+ return decodeString(cut).charAt(0);
+ } else if (encodedValue.endsWith("s")) {
+ return Short.parseShort(cut);
+ } else if (encodedValue.endsWith("L")) {
+ return Long.parseLong(cut);
+ } else if (encodedValue.endsWith("F")) {
+ return Float.parseFloat(cut);
+ } else if (encodedValue.endsWith("d")) {
+ return Double.parseDouble(cut);
+ } else if (encodedValue.endsWith(";")) {
+ return decodeEnum(encodedValue);
} else {
- throw new UnknownFormatConversionException(
- "Unknown custom type: " + type);
+ return Integer.parseInt(encodedValue);
}
- } else if (encodedValue.equals("NULL") || encodedValue.equals("null")) {
- return null;
- } else if (encodedValue.endsWith("\"")) {
- return decodeString(encodedValue);
- } else if (encodedValue.equals("true")) {
- return true;
- } else if (encodedValue.equals("false")) {
- return false;
- } else if (encodedValue.endsWith("b")) {
- return Byte.parseByte(cut);
- } else if (encodedValue.endsWith("c")) {
- return decodeString(cut).charAt(0);
- } else if (encodedValue.endsWith("s")) {
- return Short.parseShort(cut);
- } else if (encodedValue.endsWith("L")) {
- return Long.parseLong(cut);
- } else if (encodedValue.endsWith("F")) {
- return Float.parseFloat(cut);
- } else if (encodedValue.endsWith("d")) {
- return Double.parseDouble(cut);
- } else if (encodedValue.endsWith(";")) {
- return decodeEnum(encodedValue);
- } else {
- return Integer.parseInt(encodedValue);
+ } catch (Exception e) {
+ if (e instanceof IOException) {
+ throw (IOException) e;
+ }
+ throw new IOException(e.getMessage(), e);
}
}
+ /**
+ * Write the given {@link String} into the given {@link OutputStream} in
+ * UTF-8.
+ *
+ * @param out
+ * the {@link OutputStream}
+ * @param data
+ * the data to write, cannot be NULL
+ *
+ * @throws IOException
+ * in case of I/O error
+ */
+ static void write(OutputStream out, Object data) throws IOException {
+ out.write(StringUtils.getBytes(data.toString()));
+ }
+
/**
* Return the corresponding class or throw an {@link Exception} if it
* cannot.
@@ -381,7 +589,7 @@ public class SerialUtils {
}
@SuppressWarnings({ "unchecked", "rawtypes" })
- private static Enum decodeEnum(String escaped) {
+ static private Enum decodeEnum(String escaped) {
// escaped: be.xxx.EnumType.VALUE;
int pos = escaped.lastIndexOf(".");
String type = escaped.substring(0, pos);
@@ -390,39 +598,63 @@ public class SerialUtils {
try {
return Enum.valueOf((Class) getClass(type), name);
} catch (Exception e) {
- e.printStackTrace();
throw new UnknownFormatConversionException("Unknown enum: <" + type
+ "> " + name);
}
}
// aa bb -> "aa\tbb"
- private static void encodeString(StringBuilder builder, String raw) {
- builder.append('\"');
+ static void encodeString(OutputStream out, String raw) throws IOException {
+ // TODO: not. efficient.
+ out.write('\"');
+ // TODO !! utf-8 required
for (char car : raw.toCharArray()) {
- switch (car) {
- case '\\':
- builder.append("\\\\");
- break;
- case '\r':
- builder.append("\\r");
- break;
- case '\n':
- builder.append("\\n");
- break;
- case '"':
- builder.append("\\\"");
- break;
- default:
- builder.append(car);
- break;
+ encodeString(out, car);
+ }
+ out.write('\"');
+ }
+
+ // aa bb -> "aa\tbb"
+ static void encodeString(OutputStream out, InputStream raw)
+ throws IOException {
+ out.write('\"');
+ byte buffer[] = new byte[4096];
+ for (int len = 0; (len = raw.read(buffer)) > 0;) {
+ for (int i = 0; i < len; i++) {
+ // TODO: not 100% correct, look up howto for UTF-8
+ encodeString(out, (char) buffer[i]);
}
}
- builder.append('\"');
+ out.write('\"');
+ }
+
+ // for encode string, NOT to encode a char by itself!
+ static void encodeString(OutputStream out, char raw) throws IOException {
+ switch (raw) {
+ case '\\':
+ out.write('\\');
+ out.write('\\');
+ break;
+ case '\r':
+ out.write('\\');
+ out.write('r');
+ break;
+ case '\n':
+ out.write('\\');
+ out.write('n');
+ break;
+ case '"':
+ out.write('\\');
+ out.write('\"');
+ break;
+ default:
+ out.write(raw);
+ break;
+ }
}
// "aa\tbb" -> aa bb
- private static String decodeString(String escaped) {
+ static String decodeString(String escaped) {
StringBuilder builder = new StringBuilder();
boolean escaping = false;
@@ -452,6 +684,6 @@ public class SerialUtils {
}
}
- return builder.substring(1, builder.length() - 1).toString();
+ return builder.substring(1, builder.length() - 1);
}
}