protected static Header readHeader(DataInput in) throws Exception {
short magic_number = in.readShort();
Class clazz = ClassConfigurator.get(magic_number);
if (clazz == null)
throw new IllegalArgumentException(
"magic number " + magic_number + " is not available in magic map");
Header hdr = (Header) clazz.newInstance();
hdr.readFrom(in);
return hdr;
}
public void readFrom(DataInput in) throws Exception {
// 1. read the leading byte first
byte leading = in.readByte();
// 2. the flags
flags = in.readShort();
// 3. dest_addr
if (Util.isFlagSet(leading, DEST_SET)) dest_addr = Util.readAddress(in);
// 4. src_addr
if (Util.isFlagSet(leading, SRC_SET)) src_addr = Util.readAddress(in);
// 5. buf
if (Util.isFlagSet(leading, BUF_SET)) {
int len = in.readInt();
buf = new byte[len];
in.readFully(buf, 0, len);
length = len;
}
// 6. headers
int len = in.readShort();
headers = createHeaders(len);
short[] ids = headers.getRawIDs();
Header[] hdrs = headers.getRawHeaders();
for (int i = 0; i < len; i++) {
short id = in.readShort();
Header hdr = readHeader(in);
ids[i] = id;
hdrs[i] = hdr;
}
}
public void readFrom(DataInput in) throws Exception {
type = Type.values()[in.readByte()];
// We can't use Util.readObject since it's size is limited to 2^15-1
try {
short first = in.readShort();
if (first == -1) {
object = Util.readGenericStreamable(in);
} else {
ByteBuffer bb = ByteBuffer.allocate(4);
bb.putShort(first);
bb.putShort(in.readShort());
int size = bb.getInt(0);
byte[] bytes = new byte[size];
in.readFully(bytes, 0, size);
object = Util.objectFromByteBuffer(bytes);
}
} catch (IOException e) {
throw e;
} catch (Exception e) {
throw new IOException("Exception encountered while serializing execution request", e);
}
request = in.readLong();
}
public void readObject(DataInput in) throws IOException {
boolean sgIO = in.readBoolean();
int nodeID = in.readInt();
int nodeClassID = in.readShort();
nodeClassName = null;
if (nodeClassID == -1) nodeClassName = in.readUTF();
readConstructorParams(in);
if (nodeClassID != -1) {
node = createNode();
nodeClassName = node.getClass().getName();
} else node = createNode(nodeClassName);
if (sgIO) {
if (control.getCurrentFileVersion() == 1)
((com.sun.j3d.utils.scenegraph.io.SceneGraphIO) node).readSceneGraphObject(in);
else {
int size = in.readInt();
if (node instanceof com.sun.j3d.utils.scenegraph.io.SceneGraphIO) {
byte[] bytes = new byte[size];
in.readFully(bytes);
ByteArrayInputStream byteStream = new ByteArrayInputStream(bytes);
DataInputStream tmpIn = new DataInputStream(byteStream);
((com.sun.j3d.utils.scenegraph.io.SceneGraphIO) node).readSceneGraphObject(tmpIn);
tmpIn.close();
} else {
in.skipBytes(size);
}
}
}
symbol = control.getSymbolTable().createSymbol(this, node, nodeID);
readUserData(in);
if (control.getCurrentFileVersion() > 2) {
node.setName(readString(in));
}
readCapabilities(in);
}
/**
* Reads a primitive value of the specified class type from the stream.
*
* @param in A stream to read from.
* @param cls A class type of the primitive.
* @return A primitive.
* @throws IOException If an I/O error occurs.
*/
static Object readPrimitive(DataInput in, Class cls) throws IOException {
if (cls == byte.class) return in.readByte();
if (cls == short.class) return in.readShort();
if (cls == int.class) return in.readInt();
if (cls == long.class) return in.readLong();
if (cls == float.class) return in.readFloat();
if (cls == double.class) return in.readDouble();
if (cls == boolean.class) return in.readBoolean();
if (cls == char.class) return in.readChar();
throw new IllegalArgumentException();
}
public static ProteinSequence readProteinSequence(DataInput in) throws IOException {
int size = in.readInt();
char[] chars = new char[size];
int completed = 0;
while (completed < size) {
int value = in.readShort();
chars[completed++] = getUnserializedAminoAcid((short) (value >> 10));
if (completed < size) {
chars[completed++] =
getUnserializedAminoAcid((short) ((value >> 5) - ((value >> 10) << 5)));
}
if (completed < size) {
chars[completed++] = getUnserializedAminoAcid((short) ((value) - ((value >> 5) << 5)));
}
}
return new ProteinSequence(new String(chars));
}
@Override
public void readFields(DataInput in) throws IOException {
/*
* extract pkt len.
*
* GPSQL-1107:
* The DataInput might already be empty (EOF), but we can't check it beforehand.
* If that's the case, pktlen is updated to -1, to mark that the object is still empty.
* (can be checked with isEmpty()).
*/
pktlen = readPktLen(in);
if (isEmpty()) {
return;
}
/* extract the version and col cnt */
int version = in.readShort();
int curOffset = 4 + 2;
int colCnt;
/* !!! Check VERSION !!! */
if (version != GPDBWritable.VERSION && version != GPDBWritable.PREV_VERSION) {
throw new IOException(
"Current GPDBWritable version("
+ GPDBWritable.VERSION
+ ") does not match input version("
+ version
+ ")");
}
if (version == GPDBWritable.VERSION) {
errorFlag = in.readByte();
curOffset += 1;
}
colCnt = in.readShort();
curOffset += 2;
/* Extract Column Type */
colType = new int[colCnt];
DBType[] coldbtype = new DBType[colCnt];
for (int i = 0; i < colCnt; i++) {
int enumType = (in.readByte());
curOffset += 1;
if (enumType == DBType.BIGINT.ordinal()) {
colType[i] = BIGINT.getOID();
coldbtype[i] = DBType.BIGINT;
} else if (enumType == DBType.BOOLEAN.ordinal()) {
colType[i] = BOOLEAN.getOID();
coldbtype[i] = DBType.BOOLEAN;
} else if (enumType == DBType.FLOAT8.ordinal()) {
colType[i] = FLOAT8.getOID();
coldbtype[i] = DBType.FLOAT8;
} else if (enumType == DBType.INTEGER.ordinal()) {
colType[i] = INTEGER.getOID();
coldbtype[i] = DBType.INTEGER;
} else if (enumType == DBType.REAL.ordinal()) {
colType[i] = REAL.getOID();
coldbtype[i] = DBType.REAL;
} else if (enumType == DBType.SMALLINT.ordinal()) {
colType[i] = SMALLINT.getOID();
coldbtype[i] = DBType.SMALLINT;
} else if (enumType == DBType.BYTEA.ordinal()) {
colType[i] = BYTEA.getOID();
coldbtype[i] = DBType.BYTEA;
} else if (enumType == DBType.TEXT.ordinal()) {
colType[i] = TEXT.getOID();
coldbtype[i] = DBType.TEXT;
} else {
throw new IOException("Unknown GPDBWritable.DBType ordinal value");
}
}
/* Extract null bit array */
byte[] nullbytes = new byte[getNullByteArraySize(colCnt)];
in.readFully(nullbytes);
curOffset += nullbytes.length;
boolean[] colIsNull = byteArrayToBooleanArray(nullbytes, colCnt);
/* extract column value */
colValue = new Object[colCnt];
for (int i = 0; i < colCnt; i++) {
if (!colIsNull[i]) {
/* Skip the alignment padding */
int skipbytes = roundUpAlignment(curOffset, coldbtype[i].getAlignment()) - curOffset;
for (int j = 0; j < skipbytes; j++) {
in.readByte();
}
curOffset += skipbytes;
/* For fixed length type, increment the offset according to type type length here.
* For var length type (BYTEA, TEXT), we'll read 4 byte length header and the
* actual payload.
*/
int varcollen = -1;
if (coldbtype[i].isVarLength()) {
varcollen = in.readInt();
curOffset += 4 + varcollen;
} else {
curOffset += coldbtype[i].getTypeLength();
}
switch (DataType.get(colType[i])) {
case BIGINT:
{
colValue[i] = in.readLong();
break;
}
case BOOLEAN:
{
colValue[i] = in.readBoolean();
break;
}
case FLOAT8:
{
colValue[i] = in.readDouble();
break;
}
case INTEGER:
{
colValue[i] = in.readInt();
break;
}
case REAL:
{
colValue[i] = in.readFloat();
break;
}
case SMALLINT:
{
colValue[i] = in.readShort();
break;
}
/* For BYTEA column, it has a 4 byte var length header. */
case BYTEA:
{
colValue[i] = new byte[varcollen];
in.readFully((byte[]) colValue[i]);
break;
}
/* For text formatted column, it has a 4 byte var length header
* and it's always null terminated string.
* So, we can remove the last "\0" when constructing the string.
*/
case TEXT:
{
byte[] data = new byte[varcollen];
in.readFully(data, 0, varcollen);
colValue[i] = new String(data, 0, varcollen - 1, CHARSET);
break;
}
default:
throw new IOException("Unknown GPDBWritable ColType");
}
}
}
/* Skip the ending alignment padding */
int skipbytes = roundUpAlignment(curOffset, 8) - curOffset;
for (int j = 0; j < skipbytes; j++) {
in.readByte();
}
curOffset += skipbytes;
if (errorFlag != 0) {
throw new IOException("Received error value " + errorFlag + " from format");
}
}
/** Read a {@link Writable}, {@link String}, primitive type, or an array of the preceding. */
@SuppressWarnings("unchecked")
public static Object readObject(DataInput in, ObjectWritable objectWritable, Configuration conf)
throws IOException {
String className = UTF8.readString(in);
Class<?> declaredClass = PRIMITIVE_NAMES.get(className);
if (declaredClass == null) {
declaredClass = loadClass(conf, className);
}
Object instance;
if (declaredClass.isPrimitive()) { // primitive types
if (declaredClass == Boolean.TYPE) { // boolean
instance = Boolean.valueOf(in.readBoolean());
} else if (declaredClass == Character.TYPE) { // char
instance = Character.valueOf(in.readChar());
} else if (declaredClass == Byte.TYPE) { // byte
instance = Byte.valueOf(in.readByte());
} else if (declaredClass == Short.TYPE) { // short
instance = Short.valueOf(in.readShort());
} else if (declaredClass == Integer.TYPE) { // int
instance = Integer.valueOf(in.readInt());
} else if (declaredClass == Long.TYPE) { // long
instance = Long.valueOf(in.readLong());
} else if (declaredClass == Float.TYPE) { // float
instance = Float.valueOf(in.readFloat());
} else if (declaredClass == Double.TYPE) { // double
instance = Double.valueOf(in.readDouble());
} else if (declaredClass == Void.TYPE) { // void
instance = null;
} else {
throw new IllegalArgumentException("Not a primitive: " + declaredClass);
}
} else if (declaredClass.isArray()) { // array
int length = in.readInt();
instance = Array.newInstance(declaredClass.getComponentType(), length);
for (int i = 0; i < length; i++) {
Array.set(instance, i, readObject(in, conf));
}
} else if (declaredClass == String.class) { // String
instance = UTF8.readString(in);
} else if (declaredClass.isEnum()) { // enum
instance = Enum.valueOf((Class<? extends Enum>) declaredClass, UTF8.readString(in));
} else { // Writable
Class instanceClass = null;
String str = UTF8.readString(in);
instanceClass = loadClass(conf, str);
Writable writable = WritableFactories.newInstance(instanceClass, conf);
writable.readFields(in);
instance = writable;
if (instanceClass == NullInstance.class) { // null
declaredClass = ((NullInstance) instance).declaredClass;
instance = null;
}
}
if (objectWritable != null) { // store values
objectWritable.declaredClass = declaredClass;
objectWritable.instance = instance;
}
return instance;
}
public void readFrom(DataInput in) throws Exception {
type = in.readByte();
short len = in.readShort();
version = new byte[len];
in.readFully(version);
}
