@Override
public synchronized byte[] info(final MainOptions options) {
final TokenBuilder tb = new TokenBuilder();
final long l = inX.length() + inY.length() + inZ.length();
tb.add(LI_NAMES).add(data.meta.ftinclude).add(NL);
tb.add(LI_SIZE + Performance.format(l, true) + NL);
final IndexStats stats = new IndexStats(options.get(MainOptions.MAXSTAT));
addOccs(stats);
stats.print(tb);
return tb.finish();
}
/**
* Constructor, initializing the index structure.
*
* @param data data reference
* @throws IOException I/O Exception
*/
public FTIndex(final Data data) throws IOException {
super(data, true);
// cache token length index
inY = new DataAccess(data.meta.dbfile(DATAFTX + 'y'));
inZ = new DataAccess(data.meta.dbfile(DATAFTX + 'z'));
inX = new DataAccess(data.meta.dbfile(DATAFTX + 'x'));
tp = new int[data.meta.maxlen + 3];
final int tl = tp.length;
for (int i = 0; i < tl; ++i) tp[i] = -1;
int is = inX.readNum();
while (--is >= 0) {
int p = inX.readNum();
final int r;
if (p < tl) {
r = inX.read4();
} else {
// legacy issue (7.0.2 -> 7.1)
r = p << 24 | (inX.read1() & 0xFF) << 16 | (inX.read1() & 0xFF) << 8 | inX.read1() & 0xFF;
p = p >> 8 | 0x40;
}
tp[p] = r;
}
tp[tl - 1] = (int) inY.length();
}
@Override
protected long index(final int pre, final int id, final byte[] value, final int kind) {
final DataAccess store;
final TokenObjMap<IntList> map;
if (kind == ATTR) {
store = values;
map = meta.attrindex ? atvBuffer : null;
} else {
store = texts;
// don't index document names
map = meta.textindex && kind != DOC ? txtBuffer : null;
}
// add text to map to index later
if (meta.updindex && map != null && value.length <= meta.maxlen) {
IntList ids = map.get(value);
if (ids == null) {
ids = new IntList(1);
map.put(value, ids);
}
ids.add(id);
}
// add text to text file
// inline integer value...
final long v = toSimpleInt(value);
if (v != Integer.MIN_VALUE) return v | IO.OFFNUM;
// store text
final long off = store.length();
final byte[] val = COMP.get().pack(value);
store.writeToken(off, val);
return val == value ? off : off | IO.OFFCOMP;
}
@Override
protected void updateText(final int pre, final byte[] value, final int kind) {
final boolean text = kind != ATTR;
if (meta.updindex) {
// update indexes
final int id = id(pre);
final byte[] oldval = text(pre, text);
final DiskValues index = (DiskValues) (text ? textIndex : attrIndex);
// don't index document names
if (index != null && kind != DOC) index.replace(oldval, value, id);
}
// reference to text store
final DataAccess store = text ? texts : values;
// file length
final long len = store.length();
// new entry (offset or value)
final long v = toSimpleInt(value);
if (v != Integer.MIN_VALUE) {
// inline integer value
textOff(pre, v | IO.OFFNUM);
} else {
// text to be stored (possibly packed)
final byte[] val = COMP.get().pack(value);
// old entry (offset or value)
final long old = textOff(pre);
// find text store offset
final long off;
if (number(old)) {
// numeric entry: append new entry at the end
off = len;
} else {
// text size (0 if value will be inlined)
final int vl = val.length;
off = store.free(old & IO.OFFCOMP - 1, vl + Num.length(vl));
}
store.writeToken(off, val);
textOff(pre, val == value ? off : off | IO.OFFCOMP);
}
}