package org.apache.lucene.analysis.ko.dict;
import java.io.BufferedInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.nio.ByteBuffer;
import org.apache.lucene.codecs.CodecUtil;
import org.apache.lucene.store.DataInput;
import org.apache.lucene.store.InputStreamDataInput;
import org.apache.lucene.util.IOUtils;
public final class ConnectionCosts {
public static final String FILENAME_SUFFIX = ".dat";
public static final String = "ko_cc";
public static final int VERSION = 1;
private final ByteBuffer buffer;
private final int forwardSize;
private ConnectionCosts() throws IOException {
InputStream is = null;
ByteBuffer buffer = null;
boolean success = false;
try {
is = BinaryDictionary.getClassResource(getClass(), FILENAME_SUFFIX);
is = new BufferedInputStream(is);
final DataInput in = new InputStreamDataInput(is);
CodecUtil.checkHeader(in, HEADER, VERSION, VERSION);
this.forwardSize = in.readVInt();
int backwardSize = in.readVInt();
int size = forwardSize * backwardSize;
final ByteBuffer tmpBuffer = ByteBuffer.allocateDirect(size*2);
int accum = 0;
for (int j = 0; j < backwardSize; j++) {
for (int i = 0; i < forwardSize; i++) {
accum += in.readZInt();
tmpBuffer.putShort((short) accum);
}
}
buffer = tmpBuffer.asReadOnlyBuffer();
success = true;
} finally {
if (success) {
IOUtils.close(is);
} else {
IOUtils.closeWhileHandlingException(is);
}
}
this.buffer = buffer;
}
public int get(int forwardId, int backwardId) {
int offset = (backwardId * forwardSize + forwardId) * 2;
return buffer.getShort(offset);
}
public static ConnectionCosts getInstance() {
return SingletonHolder.INSTANCE;
}
private static class SingletonHolder {
static final ConnectionCosts INSTANCE;
static {
try {
INSTANCE = new ConnectionCosts();
} catch (IOException ioe) {
throw new RuntimeException("Cannot load ConnectionCosts.", ioe);
}
}
}
}