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package com.fasterxml.jackson.databind.ser.std;
import java.io.IOException;
import java.net.InetAddress;
import com.fasterxml.jackson.annotation.JsonFormat;
import com.fasterxml.jackson.core.*;
import com.fasterxml.jackson.core.type.WritableTypeId;
import com.fasterxml.jackson.databind.BeanProperty;
import com.fasterxml.jackson.databind.JsonMappingException;
import com.fasterxml.jackson.databind.JsonSerializer;
import com.fasterxml.jackson.databind.SerializerProvider;
import com.fasterxml.jackson.databind.jsontype.TypeSerializer;
import com.fasterxml.jackson.databind.ser.ContextualSerializer;
/**
* Simple serializer for {@link java.net.InetAddress}. Main complexity is
* with registration, since same serializer is to be used for sub-classes.
*
* Since 2.9 allows use of {@link JsonFormat} configuration (annotation,
* per-type defaulting) so that if JsonFormat.Shape.NUMBER
* (or ARRAY
) is used, will serialize as "host address"
* (dotted numbers) instead of simple conversion.
*/
@SuppressWarnings("serial")
public class InetAddressSerializer
extends StdScalarSerializer
implements ContextualSerializer
{
/**
* @since 2.9
*/
protected final boolean _asNumeric;
public InetAddressSerializer() {
this(false);
}
/**
* @since 2.9
*/
public InetAddressSerializer(boolean asNumeric) {
super(InetAddress.class);
_asNumeric = asNumeric;
}
@Override
public JsonSerializer> createContextual(SerializerProvider serializers,
BeanProperty property) throws JsonMappingException
{
JsonFormat.Value format = findFormatOverrides(serializers,
property, handledType());
boolean asNumeric = false;
if (format != null) {
JsonFormat.Shape shape = format.getShape();
if (shape.isNumeric() || shape == JsonFormat.Shape.ARRAY) {
asNumeric = true;
}
}
if (asNumeric != _asNumeric) {
return new InetAddressSerializer(asNumeric);
}
return this;
}
@Override
public void serialize(InetAddress value, JsonGenerator g, SerializerProvider provider) throws IOException
{
String str;
if (_asNumeric) { // since 2.9
str = value.getHostAddress();
} else {
// Ok: get textual description; choose "more specific" part
str = value.toString().trim();
int ix = str.indexOf('/');
if (ix >= 0) {
if (ix == 0) { // missing host name; use address
str = str.substring(1);
} else { // otherwise use name
str = str.substring(0, ix);
}
}
}
g.writeString(str);
}
@Override
public void serializeWithType(InetAddress value, JsonGenerator g,
SerializerProvider provider, TypeSerializer typeSer) throws IOException
{
// Better ensure we don't use specific sub-classes...
WritableTypeId typeIdDef = typeSer.writeTypePrefix(g,
typeSer.typeId(value, InetAddress.class, JsonToken.VALUE_STRING));
serialize(value, g, provider);
typeSer.writeTypeSuffix(g, typeIdDef);
}
}