virtual void init()
{
OwnedRoxieString fname(helper->getFileName());
dlfn.set(fname);
isLocal = 0 != (TIWlocal & helper->getFlags());
unsigned minSize = helper->queryDiskRecordSize()->getMinRecordSize();
if (minSize > KEYBUILD_MAXLENGTH)
throw MakeActivityException(this, 0, "Index minimum record length (%d) exceeds %d internal limit", minSize, KEYBUILD_MAXLENGTH);
unsigned maxSize = helper->queryDiskRecordSize()->getRecordSize(NULL);
if (maxSize > KEYBUILD_MAXLENGTH)
throw MakeActivityException(this, 0, "Index maximum record length (%d) exceeds %d internal limit. Minimum size = %d, try setting index MAXLENGTH", maxSize, KEYBUILD_MAXLENGTH, minSize);
singlePartKey = 0 != (helper->getFlags() & TIWsmall) || dlfn.isExternal();
clusters.kill();
unsigned idx=0;
while (true)
{
OwnedRoxieString cluster(helper->getCluster(idx));
if(!cluster)
break;
clusters.append(cluster);
idx++;
}
IArrayOf<IGroup> groups;
if (singlePartKey)
{
isLocal = true;
buildTlk = false;
}
else if (!isLocal || globals->getPropBool("@buildLocalTlks", true))
buildTlk = true;
fillClusterArray(container.queryJob(), fname, clusters, groups);
unsigned restrictedWidth = 0;
if (TIWhaswidth & helper->getFlags())
{
restrictedWidth = helper->getWidth();
if (restrictedWidth > container.queryJob().querySlaves())
throw MakeActivityException(this, 0, "Unsupported, can't refactor to width(%d) larger than host cluster(%d)", restrictedWidth, container.queryJob().querySlaves());
else if (restrictedWidth < container.queryJob().querySlaves())
{
if (!isLocal)
throw MakeActivityException(this, 0, "Unsupported, refactoring to few parts only supported for local indexes.");
assertex(!singlePartKey);
unsigned gwidth = groups.item(0).ordinality();
if (0 != container.queryJob().querySlaves() % gwidth)
throw MakeActivityException(this, 0, "Unsupported, refactored target size (%d) must be factor of thor cluster width (%d)", groups.item(0).ordinality(), container.queryJob().querySlaves());
if (0 == restrictedWidth)
restrictedWidth = gwidth;
ForEachItemIn(g, groups)
{
IGroup &group = groups.item(g);
if (gwidth != groups.item(g).ordinality())
throw MakeActivityException(this, 0, "Unsupported, cannot output multiple refactored widths, targeting cluster '%s' and '%s'", clusters.item(0), clusters.item(g));
if (gwidth != restrictedWidth)
groups.replace(*group.subset((unsigned)0, restrictedWidth), g);
}
refactor = true;
}
