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BitSetSerializer.java
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BitSetSerializer.java
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/*
* Copyright 2015 Odnoklassniki Ltd, Mail.Ru Group
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package one.nio.serial;
import one.nio.util.Base64;
import java.io.IOException;
import java.nio.LongBuffer;
import java.util.BitSet;
class BitSetSerializer extends Serializer<BitSet> {
BitSetSerializer() {
super(BitSet.class);
}
@Override
public void calcSize(BitSet obj, CalcSizeStream css) {
int wordCount = (obj.length() + 63) / 64;
css.count += 4 + wordCount * 8;
}
@Override
public void write(BitSet obj, DataStream out) throws IOException {
long[] words = obj.toLongArray();
out.writeInt(words.length);
for (long word : words) {
out.writeLong(word);
}
}
@Override
public BitSet read(DataStream in) throws IOException {
int wordCount = in.readInt();
LongBuffer buf = in.byteBuffer(wordCount * 8).asLongBuffer();
BitSet result = BitSet.valueOf(buf);
in.register(result);
return result;
}
@Override
public void skip(DataStream in) throws IOException {
in.skipBytes(in.readInt() * 8);
}
@Override
public void toJson(BitSet obj, StringBuilder builder) {
Json.appendBinary(builder, obj.toByteArray());
}
@Override
public BitSet fromJson(JsonReader in) throws IOException {
return BitSet.valueOf(in.readBinary());
}
@Override
public BitSet fromString(String s) {
return BitSet.valueOf(Base64.decodeFromChars(s.toCharArray()));
}
}