void FormLayoutMatrix::addFormWidget(AbstractFormWidget *fw)
{
int row, column;
bool spaceAvailable = findFreeSpace(fw->getWidthUnits(), fw->getHeightUnits(), row, column);
if (spaceAvailable) {
setFormWidget(fw, row, column);
} else {
createFreeSpace(fw->getWidthUnits(), fw->getHeightUnits(), row, column);
setFormWidget(fw, row, column);
}
}
int Rom::findFreeSpace(int startAddr,int size) {
return findFreeSpace(startAddr,romSize,size,NG);
}
int Rom::findFreeSpace(int startAddr,int endAddr,int size) {
return findFreeSpace(startAddr,endAddr,size,NG);
}
long BufferManager::insertOneTuple(char * tuple, int size)
{
DBFileManager * dBFileManager = DBFileManager::getInstance();
cout << "----------------Finding free space----------------" << endl;
long insertPosition = findFreeSpace(size);
long returnPosition = insertPosition;
if (insertPosition == -1)
{
long fileLength = dBFileManager->length();
if (fileLength < MAX_PAGE_NUM * PAGE_SIZE)
{
insertPosition = fileLength;
}
else
{
cout << "Out of max size of DB File." << endl;
exit(0);
}
}
cout << "Find the enough free space from position:'" << insertPosition << "'." << endl;
cout << "----------------Finding free space----------------" << endl;
cout << "----------------Inserting----------------" << endl;
if (getFreeSpaceInCurrentPage(insertPosition) > size)
{
//Just one segment
cout << "Just one segment. PageNumber: " << getPageNumber(insertPosition) << " PagePosition: " << getPagePosition(insertPosition) << " Size: " << (getFreeSpaceInCurrentPage(insertPosition)) << "." << endl;
write(tuple, getPageNumber(insertPosition), getPagePosition(insertPosition), size);
if (isPageWritable(getPageNumber(insertPosition)) == false) setFileHeader(getPageNumber(insertPosition), 1);
}
else
{
//More than one segment
//First segment
cout << "More than one segment. " << endl;
cout<<"Insert first segment. Start PageNumber: " << getPageNumber(insertPosition) << " PagePosition: " << getPagePosition(insertPosition) << " Size: " << getFreeSpaceInCurrentPage(insertPosition) << "." << endl;
write(tuple, getPageNumber(insertPosition), getPagePosition(insertPosition), getFreeSpaceInCurrentPage(insertPosition));
if (isPageWritable(getPageNumber(insertPosition)) == false) setFileHeader(getPageNumber(insertPosition), 1);
size -= (PAGE_SIZE - getPagePosition(insertPosition));
tuple += (PAGE_SIZE - getPagePosition(insertPosition));
insertPosition += (PAGE_SIZE - getPagePosition(insertPosition));
//Second to last second segments
while (size > PAGE_SIZE)
{
cout << "Insert segment. Start PageNumber: " << getPageNumber(insertPosition) << " PagePosition: " << getPagePosition(insertPosition) << " Size: " << PAGE_SIZE << endl;
write(tuple, getPageNumber(insertPosition), getPagePosition(insertPosition), PAGE_SIZE);
setFileHeader(getPageNumber(insertPosition), 1);
size -= PAGE_SIZE;
tuple += PAGE_SIZE;
insertPosition += PAGE_SIZE;
}
//last segment
cout << "Insert segment. Start PageNumber: " << getPageNumber(insertPosition) << " PagePosition: " << getPagePosition(insertPosition) << " Size: " << size << endl;
write(tuple, getPageNumber(insertPosition), getPagePosition(insertPosition), size);
if (isPageWritable(getPageNumber(insertPosition)) == false) setFileHeader(getPageNumber(insertPosition), 1);
}
cout << "----------------Inserting----------------" << endl;
return returnPosition;
}
