package com.fasterxml.jackson.datatype.guava.deser;
import java.io.IOException;
import java.util.Collection;
import com.fasterxml.jackson.annotation.JsonFormat;
import com.fasterxml.jackson.core.*;
import com.fasterxml.jackson.databind.*;
import com.fasterxml.jackson.databind.deser.ContextualDeserializer;
import com.fasterxml.jackson.databind.deser.NullValueProvider;
import com.fasterxml.jackson.databind.deser.std.ContainerDeserializerBase;
import com.fasterxml.jackson.databind.jsontype.TypeDeserializer;
import com.fasterxml.jackson.databind.type.LogicalType;
import com.fasterxml.jackson.databind.util.AccessPattern;
public abstract class GuavaCollectionDeserializer<T>
extends ContainerDeserializerBase<T>
implements ContextualDeserializer
{
private static final long serialVersionUID = 1L;
protected final JsonDeserializer<?> _valueDeserializer;
protected final TypeDeserializer _valueTypeDeserializer;
protected GuavaCollectionDeserializer(JavaType selfType,
JsonDeserializer<?> deser, TypeDeserializer typeDeser,
NullValueProvider nuller, Boolean unwrapSingle)
{
super(selfType, nuller, unwrapSingle);
_valueTypeDeserializer = typeDeser;
_valueDeserializer = deser;
}
public abstract GuavaCollectionDeserializer<T> withResolved(
JsonDeserializer<?> valueDeser, TypeDeserializer typeDeser,
NullValueProvider nuller, Boolean unwrapSingle);
@Override
public JsonDeserializer<?> createContextual(DeserializationContext ctxt,
BeanProperty property) throws JsonMappingException
{
Boolean unwrapSingle = findFormatFeature(ctxt, property, Collection.class,
JsonFormat.Feature.ACCEPT_SINGLE_VALUE_AS_ARRAY);
JsonDeserializer<?> valueDeser = _valueDeserializer;
TypeDeserializer valueTypeDeser = _valueTypeDeserializer;
if (valueDeser == null) {
valueDeser = ctxt.findContextualValueDeserializer(_containerType.getContentType(), property);
}
if (valueTypeDeser != null) {
valueTypeDeser = valueTypeDeser.forProperty(property);
}
NullValueProvider nuller = findContentNullProvider(ctxt, property, valueDeser);
if ( (unwrapSingle != _unwrapSingle)
|| (nuller != _nullProvider)
|| (valueDeser != _valueDeserializer)
|| (valueTypeDeser != _valueTypeDeserializer)) {
return withResolved(valueDeser, valueTypeDeser, nuller, unwrapSingle);
}
return this;
}
@SuppressWarnings("unchecked")
@Override
public JsonDeserializer<Object> getContentDeserializer() {
return (JsonDeserializer<Object>) _valueDeserializer;
}
@Override
public LogicalType logicalType() {
return LogicalType.Collection;
}
@Override
public Object deserializeWithType(JsonParser p, DeserializationContext ctxt,
TypeDeserializer typeDeserializer)
throws IOException
{
return typeDeserializer.deserializeTypedFromArray(p, ctxt);
}
@SuppressWarnings("unchecked")
@Override
public T deserialize(JsonParser p, DeserializationContext ctxt)
throws IOException
{
if (p.isExpectedStartArrayToken()) {
return _deserializeContents(p, ctxt);
}
if (ctxt.isEnabled(DeserializationFeature.ACCEPT_SINGLE_VALUE_AS_ARRAY)) {
return _deserializeFromSingleValue(p, ctxt);
}
return (T) ctxt.handleUnexpectedToken(_valueClass, p);
}
@Override
public abstract AccessPattern getEmptyAccessPattern();
@Override
public abstract Object getEmptyValue(DeserializationContext ctxt) throws JsonMappingException;
protected abstract T _deserializeContents(JsonParser p, DeserializationContext ctxt)
throws IOException;
protected T _deserializeFromSingleValue(JsonParser p, DeserializationContext ctxt)
throws IOException
{
final JsonDeserializer<?> valueDes = _valueDeserializer;
final TypeDeserializer typeDeser = _valueTypeDeserializer;
final JsonToken t = p.getCurrentToken();
final Object value;
if (t == JsonToken.VALUE_NULL) {
if (_skipNullValues) {
return _createEmpty(ctxt);
}
value = _nullProvider.getNullValue(ctxt);
} else if (typeDeser == null) {
value = valueDes.deserialize(p, ctxt);
} else {
value = valueDes.deserializeWithType(p, ctxt, typeDeser);
}
return _createWithSingleElement(ctxt, value);
}
protected abstract T _createEmpty(DeserializationContext ctxt);
protected abstract T _createWithSingleElement(DeserializationContext ctxt, Object value);
}