public void openAppend() {
if (!datafile.hasLock()) {
throw new RuntimeException(
PrintTools.sprintf("Should lock file before append %s", datafile.getName()));
}
datafile.openAppend();
}
protected static void out(String s, Object... args) throws IOException {
if (out == null) {
systemout.println(sprintf(s, args));
} else {
out.printf(s + "\n", args);
out.flush();
}
}
public static void print(String s) throws IOException {
if (out == null) {
systemout.println(s);
} else {
out.printf(s + "\n");
out.flush();
}
}
public boolean findFirstRecord() {
if (getOffset() == 0 && getOffset() < getCeiling()) {
return true;
}
ByteSearchPosition matchPos = datafile.matchPos(root.section);
if (matchPos.found()) {
datafile.movePast(matchPos);
return getOffset() < getCeiling();
}
return false;
}
public void openWrite() {
checkFirstUse();
if (root.writeenabled() && datafile != null) {
datafile.openWrite();
if (hasHeader) {
root.writeHeader();
}
}
}
public void openRead() {
checkFirstUse();
if (datafile != null) {
if (reader == null) {
reader = datafile.rwbuffer;
}
datafile.openRead();
if (hasHeader) {
ByteSearchSection section = reader.readSectionStart(root.section);
if (section.notEmpty()) {
root.readHeader(section);
reader.movePast(section);
}
}
}
}
public boolean hasMore() {
return datafile.hasMore();
}
public void setBufferSize(int buffersize) {
datafile.setBufferSize(buffersize);
}
public void setOffset(long offset) {
datafile.setOffset(offset);
}
public void setCeiling(long ceiling) {
datafile.setCeiling(ceiling);
}
public long getCeiling() {
return datafile.getCeiling();
}
public void closeWrite() {
if (datafile != null) {
datafile.closeWrite();
}
}
public void unlock() {
datafile.unlock();
}
public boolean lock() {
return datafile.lock();
}
public boolean exists() {
return datafile.existsDir();
}
public void delete() {
datafile.delete();
}
public long getLength() {
return datafile.getLength();
}
public void resetStart() {
if (datafile != null) {
datafile.resetStart();
}
}
public long getOffset() {
return datafile.getOffset();
}
public void closeRead() {
if (datafile != null) {
datafile.closeRead();
}
}