/** Write the header data. */
void initWrite() {
data = store.createData();
data.writeByte((byte) Page.TYPE_STREAM_DATA);
data.writeShortInt(0);
data.writeInt(trunk);
data.writeInt(logKey);
remaining = store.getPageSize() - data.length();
}
private void writeRow(Data buff, Row r) {
buff.checkCapacity(1 + Data.LENGTH_INT * 8);
buff.writeByte((byte) 1);
buff.writeInt(r.getMemory());
int columnCount = r.getColumnCount();
buff.writeInt(columnCount);
buff.writeLong(r.getKey());
buff.writeInt(r.getVersion());
buff.writeInt(r.isDeleted() ? 1 : 0);
buff.writeInt(r.getSessionId());
for (int i = 0; i < columnCount; i++) {
Value v = r.getValue(i);
buff.checkCapacity(1);
if (v == null) {
buff.writeByte((byte) 0);
} else {
buff.writeByte((byte) 1);
if (v.getType() == Value.CLOB || v.getType() == Value.BLOB) {
// need to keep a reference to temporary lobs,
// otherwise the temp file is deleted
if (v.getSmall() == null && v.getTableId() == 0) {
if (lobs == null) {
lobs = New.arrayList();
}
// need to create a copy, otherwise,
// if stored multiple times, it may be renamed
// and then not found
v = v.copyToTemp();
lobs.add(v);
}
}
buff.checkCapacity(buff.getValueLen(v));
buff.writeValue(v);
}
}
}
@Override
public int addRows(ArrayList<Value[]> rows) {
if (sort != null) {
sort.sort(rows);
}
Data buff = rowBuff;
long start = file.getFilePointer();
ByteArrayOutputStream buffer = new ByteArrayOutputStream();
int bufferLen = 0;
for (Value[] row : rows) {
buff.reset();
buff.writeInt(0);
for (int j = 0; j < columnCount; j++) {
Value v = row[j];
buff.checkCapacity(buff.getValueLen(v));
buff.writeValue(v);
}
buff.fillAligned();
int len = buff.length();
buff.setInt(0, len);
if (maxBufferSize > 0) {
buffer.write(buff.getBytes(), 0, len);
bufferLen += len;
if (bufferLen > maxBufferSize) {
byte[] data = buffer.toByteArray();
buffer.reset();
file.write(data, 0, data.length);
bufferLen = 0;
}
} else {
file.write(buff.getBytes(), 0, len);
}
}
if (bufferLen > 0) {
byte[] data = buffer.toByteArray();
file.write(data, 0, data.length);
}
if (sort != null) {
ResultDiskTape tape = new ResultDiskTape();
tape.start = start;
tape.end = file.getFilePointer();
tapes.add(tape);
} else {
mainTape.end = file.getFilePointer();
}
rowCount += rows.size();
return rowCount;
}
private static void initBuffer(Data buff) {
buff.reset();
buff.writeInt(0);
}
/**
* Append a long value. This method writes two int values.
*
* @param x the value
*/
public void writeLong(long x) {
writeInt((int) (x >>> 32));
writeInt((int) x);
}
