public Index(final Dictionary dict, final RandomAccessFile raf) throws IOException {
this.dict = dict;
shortName = raf.readUTF();
longName = raf.readUTF();
final String languageCode = raf.readUTF();
sortLanguage = Language.lookup(languageCode);
normalizerRules = raf.readUTF();
swapPairEntries = raf.readBoolean();
if (sortLanguage == null) {
throw new IOException("Unsupported language: " + languageCode);
}
if (dict.dictFileVersion >= 2) {
mainTokenCount = raf.readInt();
}
sortedIndexEntries =
CachingList.create(
RAFList.create(raf, indexEntrySerializer, raf.getFilePointer()), CACHE_SIZE);
if (dict.dictFileVersion >= 4) {
stoplist = new SerializableSerializer<Set<String>>().read(raf);
} else {
stoplist = Collections.emptySet();
}
rows =
CachingList.create(
UniformRAFList.create(raf, new RowBase.Serializer(this), raf.getFilePointer()),
CACHE_SIZE);
}
@Override
public ITmfEvent parseEvent(final ITmfContext context) {
if (!(fEventStream instanceof TmfTraceStub)) {
return null;
}
// Highly inefficient...
final RandomAccessFile stream = ((TmfTraceStub) fEventStream).getStream();
if (stream == null) {
return null;
}
// String name = eventStream.getName();
// name = name.substring(name.lastIndexOf('/') + 1);
// no need to use synchronized since it's already cover by the calling method
long location = 0;
if (context != null && context.getLocation() != null) {
location = (Long) context.getLocation().getLocationInfo();
try {
stream.seek(location);
final long ts = stream.readLong();
stream.readUTF(); /* Previously source, now unused */
final String type = stream.readUTF();
stream.readInt(); /* Previously reference, now unused */
final int typeIndex = Integer.parseInt(type.substring(typePrefix.length()));
final String[] fields = new String[typeIndex];
for (int i = 0; i < typeIndex; i++) {
fields[i] = stream.readUTF();
}
final StringBuffer content = new StringBuffer("[");
if (typeIndex > 0) {
content.append(fields[0]);
}
for (int i = 1; i < typeIndex; i++) {
content.append(", ").append(fields[i]);
}
content.append("]");
final TmfEventField root =
new TmfEventField(ITmfEventField.ROOT_FIELD_ID, content.toString(), null);
final ITmfEvent event =
new TmfEvent(
fEventStream,
ITmfContext.UNKNOWN_RANK,
fEventStream.createTimestamp(ts * 1000000L),
fTypes[typeIndex],
root);
return event;
} catch (final EOFException e) {
} catch (final IOException e) {
}
}
return null;
}
public IndexEntry(final Index index, final RandomAccessFile raf) throws IOException {
this.index = index;
token = raf.readUTF();
startRow = raf.readInt();
numRows = raf.readInt();
final boolean hasNormalizedForm = raf.readBoolean();
normalizedToken = hasNormalizedForm ? raf.readUTF() : token;
if (index.dict.dictFileVersion >= 6) {
this.htmlEntries =
CachingList.create(
RAFList.create(raf, index.dict.htmlEntryIndexSerializer, raf.getFilePointer()), 1);
} else {
this.htmlEntries = Collections.emptyList();
}
}
private void loadFromFile() throws IOException, ReflectiveOperationException {
RandomAccessFile file = null;
try {
int fieldId = 0;
file = new RandomAccessFile(filePath, "r");
while (file.getFilePointer() < file.length()) {
String fieldName = file.readUTF();
int fieldType = file.readUnsignedByte();
BitSet bitSet = BitSet.valueOf(new byte[] {file.readByte()});
boolean indexed = bitSet.get(BIT_INDEX_INDEXED);
boolean stored = bitSet.get(BIT_INDEX_STORED);
Field f = new Field();
f.setFieldId(fieldId);
f.setFieldName(fieldName);
f.setIsIndexed(indexed);
f.setIsStored(stored);
f.setFieldType(fieldTypeStore.findTypeById(fieldType));
fieldIdMapping.add(f);
fieldNameMapping.put(f.getFieldName(), f);
fieldId++;
}
} finally {
if (file != null) {
file.close();
}
}
}
static void display() throws IOException {
RandomAccessFile rf = new RandomAccessFile(file, "r");
for (int i = 0; i < 7; i++) {
System.out.println("Value " + i + " : " + rf.readDouble());
}
System.out.println(rf.readUTF());
rf.close();
}
public void testEmptyList() throws IOException {
final File file = File.createTempFile("asdf", "asdf");
file.deleteOnExit();
final RandomAccessFile raf = new RandomAccessFile(file, "rw");
raf.writeUTF("Hello World!");
final List<String> l1 = Collections.emptyList();
RAFList.write(raf, l1, RAFSerializer.STRING);
raf.writeUTF("Goodbye World!");
raf.seek(0);
assertEquals("Hello World!", raf.readUTF());
final RAFList<String> l1Copy = RAFList.create(raf, RAFSerializer.STRING, raf.getFilePointer());
assertEquals(l1, l1Copy);
raf.seek(l1Copy.getEndOffset());
assertEquals("Goodbye World!", raf.readUTF());
}
public static void main(String args[]) {
try {
String fname = "d:\\q.txt";
String mode;
// mode = "r";//r : file must exist
mode = "rw"; // rw : file will be created or opened
// open the file
RandomAccessFile raf = new RandomAccessFile(fname, mode);
/*
//seek and write demo
raf.seek(10);//position file r/w pointer at index 10 wrt BOF
//a seek beyond file size causes file to grow upto the seek value
raf.write(65);//raf.write('A');
*/
// r/w java datatypes
int i1, i2;
float f1, f2;
char c1, c2;
String s1, s2;
i1 = -10;
f1 = 1234.5678F;
c1 = 'q';
s1 = "hello files";
raf.seek(0); // reach BOF
raf.writeInt(i1);
raf.writeFloat(f1);
raf.writeChar(c1);
raf.writeUTF(s1);
raf.seek(0); // reach BOF
i2 = raf.readInt();
f2 = raf.readFloat();
c2 = raf.readChar();
s2 = raf.readUTF();
System.out.println(i2);
System.out.println(f2);
System.out.println(c2);
System.out.println(s2);
// close the file
raf.close();
} catch (IOException ex) {
System.out.println(ex); // ex converts into ex.toString()
}
} // main
public void testFileList(final RAFSerializer<String> serializer) throws IOException {
final File file = File.createTempFile("asdf", "asdf");
file.deleteOnExit();
final RandomAccessFile raf = new RandomAccessFile(file, "rw");
raf.writeUTF("Hello World!");
final List<String> l1 = Arrays.asList("1a", "1bc", "1def");
final List<String> l2 = Arrays.asList("2aa", "2abc", "2adef");
RAFList.write(raf, l1, serializer);
RAFList.write(raf, l2, serializer);
raf.writeUTF("Goodbye World!");
raf.seek(0);
assertEquals("Hello World!", raf.readUTF());
final RAFList<String> l1Copy = RAFList.create(raf, serializer, raf.getFilePointer());
assertEquals(l1, l1Copy);
final RAFList<String> l2Copy = RAFList.create(raf, serializer, l1Copy.getEndOffset());
assertEquals(l2, l2Copy);
raf.seek(l2Copy.getEndOffset());
assertEquals("Goodbye World!", raf.readUTF());
}
public static void main(String args[]) {
RandomAccessFile classe = null;
Scanner entrada = new Scanner(System.in);
Aluno b = new Aluno();
boolean achou = false;
float media;
try {
classe = new RandomAccessFile("c:\\alunos.dat", "rw");
achou = false;
while (true) {
b.numero = classe.readInt();
b.nome = classe.readUTF();
b.curso = classe.readUTF();
b.nota1 = classe.readFloat();
b.nota2 = classe.readFloat();
media = (float) ((b.nota1 + b.nota2) / 2);
if (media >= 7) {
System.out.print("\nNome: " + b.nome);
System.out.print("\nCurso: " + b.curso);
System.out.print("\nNota1: " + b.nota1);
System.out.print("\nNota2: " + b.nota2);
System.out.print("\nMedia: " + media + "\n");
}
}
} // fim try
catch (EOFException e) {
try {
classe.close();
} // fim try
catch (IOException e2) {
System.out.println("\nErro de I/O");
}
} // fimn catch (EOFException e)
catch (IOException e) {
System.out.println("Erro na criacao o arquivo");
}
} // fim main
/** {@inheritDoc} */
public String readUTF() throws IOException {
final String token;
// peek ahead to determine the length of the String:
final long position = dataInput.getChannel().position();
final int stringLength = readShort();
dataInput.seek(position);
fileSize -= stringLength;
if (fileSize < 0) {
throw new EOFException();
}
token = dataInput.readUTF();
return token;
}
public My_Room_AC_db(String name) {
y = new ArrayList<String>();
try {
raf = new RandomAccessFile("ac_db.dat", "r");
String arr2[] = name.split("#");
while (true) {
String rec = raf.readUTF();
String arr[] = rec.split("#");
if (arr[0].equals(arr2[0])) {
y.add(name);
} else {
y.add(rec);
}
}
} catch (Exception ep) {
} finally {
try {
// if(raf!=null)
raf.close();
File f = new File("ac_db.dat", "r");
f.delete();
} catch (Exception ex) {
}
}
raf = null;
try {
raf = new RandomAccessFile("ac_db.dat", "rw");
for (String ss : y) {
raf.writeUTF(ss);
}
} catch (Exception ef) {
} finally {
try {
raf.close();
} catch (Exception ex) {
}
}
}
public T readObj(String fileName) {
RandomAccessFile file = null;
T retObj = null;
if (!configDirExists(fileName)) {
return null;
}
try {
file = new RandomAccessFile(fileName, "rw");
if (debug) {
System.out.printf("ConfigLoader reading:%s\n", fileName);
}
retObj = (T) xstream.fromXML(file.readUTF());
} catch (IOException ex) {
System.err.printf(
"Warning: failed to read config:%s : %s -- %s\n",
configPathToFile, fileName, getPathToConfigDir());
return null;
} finally {
try {
if (file != null) {
file.close();
}
} catch (IOException e) {
e.printStackTrace();
}
}
if (retObj != null && retObj instanceof ConfPortfolio) {
ConfPortfolio config = (ConfPortfolio) retObj;
if (config.useCurentDayAsEndingDate) {
config.inputEndingDate = new DateTime();
}
}
return retObj;
}
protected long readHeader(RandomAccessFile raFile) throws IOException {
raFile.seek(0);
if (raFile.length() == 0) return -1;
String versionHint = raFile.readUTF();
if (!"GH".equals(versionHint))
throw new IllegalArgumentException(
"Not a GraphHopper file! Expected 'GH' as file marker but was " + versionHint);
// use a separate version field
int majorVersion = raFile.readInt();
if (majorVersion != version())
throw new IllegalArgumentException(
"This GraphHopper file has the wrong version! "
+ "Expected "
+ version()
+ " but was "
+ majorVersion);
long bytes = raFile.readLong();
segmentSize(raFile.readInt());
for (int i = 0; i < header.length; i++) {
header[i] = raFile.readInt();
}
return bytes;
}
private String readString(long strOffset) throws IOException {
stringFile.seek(strOffset);
return stringFile.readUTF();
}
/* @see java.io.DataInput.readUTF() */
public String readUTF() throws IOException {
raf.seek(position);
String utf8 = raf.readUTF();
buffer(raf.getFilePointer(), 0);
return utf8;
}
private java.nio.channels.FileLock lock(FileLockManager.LockMode lockMode) throws Throwable {
LOGGER.debug(
"Waiting to acquire {} lock on {}.", lockMode.toString().toLowerCase(), displayName);
long timeout = System.currentTimeMillis() + lockTimeoutMs;
// Lock the state region, with the requested mode
java.nio.channels.FileLock stateRegionLock = lockStateRegion(lockMode, timeout);
if (stateRegionLock == null) {
// Can't acquire lock, get details of owner to include in the error message
String ownerPid = "unknown";
String ownerOperation = "unknown";
java.nio.channels.FileLock informationRegionLock =
lockInformationRegion(LockMode.Shared, timeout);
if (informationRegionLock == null) {
LOGGER.debug("Could not lock information region for {}. Ignoring.", displayName);
} else {
try {
if (lockFileAccess.length() <= INFORMATION_REGION_POS) {
LOGGER.debug(
"Lock file for {} is too short to contain information region. Ignoring.",
displayName);
} else {
lockFileAccess.seek(INFORMATION_REGION_POS);
if (lockFileAccess.readByte() != INFORMATION_REGION_PROTOCOL) {
throw new IllegalStateException(
String.format(
"Unexpected lock protocol found in lock file '%s' for %s.",
lockFile, displayName));
}
ownerPid = lockFileAccess.readUTF();
ownerOperation = lockFileAccess.readUTF();
}
} finally {
informationRegionLock.release();
}
}
throw new LockTimeoutException(
String.format(
"Timeout waiting to lock %s. It is currently in use by another Gradle instance.%nOwner PID: %s%nOur PID: %s%nOwner Operation: %s%nOur operation: %s%nLock file: %s",
displayName,
ownerPid,
metaDataProvider.getProcessIdentifier(),
ownerOperation,
operationDisplayName,
lockFile));
}
try {
if (lockFileAccess.length() > 0) {
lockFileAccess.seek(STATE_REGION_POS);
if (lockFileAccess.readByte() != STATE_REGION_PROTOCOL) {
throw new IllegalStateException(
String.format(
"Unexpected lock protocol found in lock file '%s' for %s.",
lockFile, displayName));
}
}
if (!stateRegionLock.isShared()) {
// We have an exclusive lock (whether we asked for it or not).
// Update the state region
if (lockFileAccess.length() < STATE_REGION_SIZE) {
// File did not exist before locking
lockFileAccess.seek(STATE_REGION_POS);
lockFileAccess.writeByte(STATE_REGION_PROTOCOL);
lockFileAccess.writeBoolean(false);
}
// Acquire an exclusive lock on the information region and write our details there
java.nio.channels.FileLock informationRegionLock =
lockInformationRegion(LockMode.Exclusive, timeout);
if (informationRegionLock == null) {
throw new IllegalStateException(
String.format(
"Timeout waiting to lock the information region for lock %s", displayName));
}
// check that the length of the reserved region is enough for storing our content
try {
lockFileAccess.seek(INFORMATION_REGION_POS);
lockFileAccess.writeByte(INFORMATION_REGION_PROTOCOL);
lockFileAccess.writeUTF(trimIfNecessary(metaDataProvider.getProcessIdentifier()));
lockFileAccess.writeUTF(trimIfNecessary(operationDisplayName));
lockFileAccess.setLength(lockFileAccess.getFilePointer());
} finally {
informationRegionLock.release();
}
}
} catch (Throwable t) {
stateRegionLock.release();
throw t;
}
LOGGER.debug("Lock acquired.");
return stateRegionLock;
}
/* @see java.io.DataInput.readUTF() */
public String readUTF() throws IOException {
return raf.readUTF();
}