/**
* Copyright (c) 2002-2007 Yuri Schimke. All Rights Reserved.
*
* This library is free software; you can redistribute it and/or modify it under
* the terms of the GNU Lesser General Public License as published by the Free
* Software Foundation; either version 2.1 of the License, or (at your option)
* any later version.
*
* This library is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
* FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
* details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this library; if not, write to the Free Software Foundation, Inc.,
* 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
package com.baulsupp.kolja.log.line;
import java.util.ArrayList;
import java.util.List;
import org.apache.commons.collections.primitives.ArrayIntList;
import com.baulsupp.kolja.log.field.MemoryIntField;
import com.baulsupp.kolja.log.field.MemorySparseIntField;
import com.baulsupp.kolja.log.field.SparseIntField;
import com.baulsupp.kolja.log.util.IntRange;
public class ValueIndexer implements LineListener, CompletionStatus {
protected SparseIntField indexed = new MemorySparseIntField();
protected LineIndex li;
private boolean inRead = false;
public ValueIndexer(LineIndex li) {
this.li = li;
}
public void linesAvailable(IntRange region, List<Line> lines) {
if (!inRead) {
IntRange[] unknown = indexed.listUnknownRanges(region);
for (IntRange range : unknown) {
List<Line> regionLines = new ArrayList<Line>();
for (Line line : lines) {
if (range.contains(line.getIntOffset())) {
regionLines.add(line);
}
}
processLines(range, regionLines);
}
}
}
public void ensureAllKnown() {
ensureKnown(new IntRange(0, li.length()));
}
public void ensureKnown(IntRange region) {
IntRange[] unknown = indexed.listUnknownRanges(region);
for (IntRange unknownRegion : unknown) {
List<Line> list;
try {
inRead = true;
list = li.get(unknownRegion);
} finally {
inRead = false;
}
// TODO check this is making sense
processLines(unknownRegion, list);
}
}
public IntRange[] listUnknown() {
return indexed.listUnknownRanges(new IntRange(0, li.length()));
}
protected void processLines(IntRange range, List<Line> regionLines) {
indexed.add(new MemoryIntField(range, new ArrayIntList(0)));
}
public int getLength() {
return li.length();
}
public double getCompletionPercentage(IntRange range) {
IntRange[] unknown = indexed.listUnknownRanges(range);
int totalUnknown = 0;
for (IntRange r : unknown) {
totalUnknown += r.getLength();
}
return totalUnknown / range.getLength();
}
public void deregister() {
li.removeLineListener(this);
}
}