46 lines
1.2 KiB
Java
46 lines
1.2 KiB
Java
package org.warp.jcwdb;
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import java.util.ArrayList;
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import it.unimi.dsi.fastutil.longs.LongArrayList;
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public class DBLightListParser extends DBTypeParserImpl<LightList> {
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private final JCWDatabase db;
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public DBLightListParser(JCWDatabase db) {
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this.db = db;
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}
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public DBReader<LightList> getReader() {
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return (i, size) -> {
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LongArrayList internalList = new LongArrayList();
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LongArrayList hashes = new LongArrayList();
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long max = size / (Long.BYTES * 2);
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for (int item = 0; item < max; item++){
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long itm = i.readLong();
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long hash = i.readLong();
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internalList.add(itm);
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hashes.add(hash);
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}
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return new LightList(db, internalList, hashes);
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};
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}
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public DBDataOutput<LightList> getWriter(final LightList value) {
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final int elementsCount = value.size();
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return DBDataOutput.create((o) -> {
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LongArrayList list = value.internalList;
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LongArrayList hashes = value.hashes;
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for (int i = 0; i < elementsCount; i++) {
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o.writeLong(list.getLong(i));
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o.writeLong(hashes.getLong(i));
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}
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}, DBStandardTypes.LIGHT_LIST, elementsCount * Long.BYTES * 2, calculateHash(value));
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}
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@Override
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public long calculateHash(LightList value) {
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return value.hashCodeLong();
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}
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}
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