java/src/main/java/com/jsoniter/DefaultMapKeyDecoder.java at master · eason2017/java · GitHub

39 lines (32 loc) · 1.2 KB

package com.jsoniter;

import com.jsoniter.spi.*;

import java.io.IOException;

import java.lang.reflect.Type;

class DefaultMapKeyDecoder implements MapKeyDecoder {

public static MapKeyDecoder registerOrGetExisting(Type mapKeyType) {

String cacheKey = JsoniterSpi.getMapKeyDecoderCacheKey(mapKeyType);

MapKeyDecoder mapKeyDecoder = JsoniterSpi.getMapKeyDecoder(cacheKey);

if (null != mapKeyDecoder) {

return mapKeyDecoder;

}

mapKeyDecoder = new DefaultMapKeyDecoder(TypeLiteral.create(mapKeyType));

JsoniterSpi.addNewMapDecoder(cacheKey, mapKeyDecoder);

return mapKeyDecoder;

}

private final TypeLiteral mapKeyTypeLiteral;

private DefaultMapKeyDecoder(TypeLiteral mapKeyTypeLiteral) {

this.mapKeyTypeLiteral = mapKeyTypeLiteral;

}

@Override

public Object decode(Slice encodedMapKey) {

JsonIterator iter = JsonIteratorPool.borrowJsonIterator();

iter.reset(encodedMapKey);

try {

return iter.read(mapKeyTypeLiteral);

} catch (IOException e) {

throw new JsonException(e);

} finally {

JsonIteratorPool.returnJsonIterator(iter);

}

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