package org.zalando.jackson.datatype.money; import com.fasterxml.jackson.core.JsonGenerator; import com.fasterxml.jackson.databind.JavaType; import com.fasterxml.jackson.databind.JsonMappingException; import com.fasterxml.jackson.databind.SerializerProvider; import com.fasterxml.jackson.databind.jsonFormatVisitors.JsonFormatVisitorWrapper; import com.fasterxml.jackson.databind.jsonFormatVisitors.JsonObjectFormatVisitor; import com.fasterxml.jackson.databind.jsontype.TypeSerializer; import com.fasterxml.jackson.databind.ser.std.StdSerializer; import javax.annotation.Nullable; import javax.money.CurrencyUnit; import javax.money.MonetaryAmount; import javax.money.format.MonetaryAmountFormat; import java.io.IOException; import java.util.Locale; final class MonetaryAmountSerializer extends StdSerializer<MonetaryAmount> { private final FieldNames names; private final AmountWriter<?> writer; private final MonetaryAmountFormatFactory factory; MonetaryAmountSerializer(final FieldNames names, final AmountWriter<?> writer, final MonetaryAmountFormatFactory factory) { super(MonetaryAmount.class); this.writer = writer; this.factory = factory; this.names = names; } @Override public void acceptJsonFormatVisitor(final JsonFormatVisitorWrapper wrapper, final JavaType hint) throws JsonMappingException { @Nullable final JsonObjectFormatVisitor visitor = wrapper.expectObjectFormat(hint); if (visitor == null) { return; } final SerializerProvider provider = wrapper.getProvider(); visitor.property(names.getAmount(), provider.findValueSerializer(writer.getType()), provider.constructType(writer.getType())); visitor.property(names.getCurrency(), provider.findValueSerializer(CurrencyUnit.class), provider.constructType(CurrencyUnit.class)); visitor.optionalProperty(names.getFormatted(), provider.findValueSerializer(String.class), provider.constructType(String.class)); } @Override public void serializeWithType(final MonetaryAmount value, final JsonGenerator generator, final SerializerProvider provider, final TypeSerializer serializer) throws IOException { // effectively assuming no type information at all serialize(value, generator, provider); } @Override public void serialize(final MonetaryAmount value, final JsonGenerator json, final SerializerProvider provider) throws IOException { final CurrencyUnit currency = value.getCurrency(); @Nullable final String formatted = format(value, provider); json.writeStartObject(); { json.writeObjectField(names.getAmount(), writer.write(value)); json.writeObjectField(names.getCurrency(), currency); if (formatted != null) { json.writeStringField(names.getFormatted(), formatted); } } json.writeEndObject(); } @Nullable private String format(final MonetaryAmount value, final SerializerProvider provider) { final Locale locale = provider.getConfig().getLocale(); final MonetaryAmountFormat format = factory.create(locale); return format == null ? null : format.format(value); } }