41 lines
1.0 KiB
Java
41 lines
1.0 KiB
Java
package org.warp.jcwdb;
|
|
|
|
import java.util.ArrayList;
|
|
|
|
import it.unimi.dsi.fastutil.longs.LongArrayList;
|
|
|
|
public class DBLightListParser<T> extends DBTypeParserImpl<LightList<T>> {
|
|
private final JCWDatabase db;
|
|
|
|
public DBLightListParser(JCWDatabase db) {
|
|
this.db = db;
|
|
}
|
|
|
|
public DBReader<LightList<T>> getReader() {
|
|
return (i, size) -> {
|
|
LongArrayList internalList = new LongArrayList();
|
|
long max = size / Long.BYTES;
|
|
for (int item = 0; item < max; item++){
|
|
long itm = i.readLong();
|
|
internalList.add(itm);
|
|
}
|
|
return new LightList<T>(db, internalList);
|
|
};
|
|
}
|
|
|
|
public DBDataOutput<LightList<T>> getWriter(final LightList<T> value) {
|
|
final int elementsCount = value.size();
|
|
return DBDataOutput.create((o) -> {
|
|
LongArrayList list = value.internalList;
|
|
for (int i = 0; i < elementsCount; i++) {
|
|
o.writeLong(list.getLong(i));
|
|
}
|
|
}, DBStandardTypes.LIGHT_LIST, elementsCount * Long.BYTES, calculateHash(value));
|
|
}
|
|
|
|
@Override
|
|
public long calculateHash(LightList<T> value) {
|
|
return value.internalList.hashCode();
|
|
}
|
|
}
|