package com.facebook.presto.jdbc.internal.jackson.datatype.guava.deser;
import java.io.IOException;
import com.facebook.presto.jdbc.internal.jackson.core.JsonParser;
import com.facebook.presto.jdbc.internal.jackson.core.JsonProcessingException;
import com.facebook.presto.jdbc.internal.jackson.core.JsonToken;
import com.facebook.presto.jdbc.internal.jackson.databind.DeserializationContext;
import com.facebook.presto.jdbc.internal.jackson.databind.JsonDeserializer;
import com.facebook.presto.jdbc.internal.jackson.databind.jsontype.TypeDeserializer;
import com.facebook.presto.jdbc.internal.jackson.databind.type.CollectionType;
import com.facebook.presto.jdbc.internal.guava.collect.Multiset;
abstract class GuavaMultisetDeserializer<T extends Multiset<Object>> extends GuavaCollectionDeserializer<T> {
GuavaMultisetDeserializer(CollectionType type, TypeDeserializer typeDeser, JsonDeserializer<?> deser) {
super(type, typeDeser, deser);
}
protected abstract T createMultiset();
@Override
protected T _deserializeContents(JsonParser jp, DeserializationContext ctxt) throws IOException,
JsonProcessingException {
JsonDeserializer<?> valueDes = _valueDeserializer;
JsonToken t;
final TypeDeserializer typeDeser = _typeDeserializerForValue;
T set = createMultiset();
while ((t = jp.nextToken()) != JsonToken.END_ARRAY) {
Object value;
if (t == JsonToken.VALUE_NULL) {
value = null;
} else if (typeDeser == null) {
value = valueDes.deserialize(jp, ctxt);
} else {
value = valueDes.deserializeWithType(jp, ctxt, typeDeser);
}
set.add(value);
}
return set;
}
}