com.facebook.presto.jdbc.internal.jackson.datatype.guava.deser.HostAndPortDeserializer Maven / Gradle / Ivy

package com.facebook.presto.jdbc.internal.jackson.datatype.guava.deser;

import java.io.IOException;

import com.facebook.presto.jdbc.internal.jackson.core.*;
import com.facebook.presto.jdbc.internal.jackson.databind.DeserializationContext;
import com.facebook.presto.jdbc.internal.jackson.databind.JsonNode;
import com.facebook.presto.jdbc.internal.jackson.databind.deser.std.FromStringDeserializer;
import com.facebook.presto.jdbc.internal.guava.net.HostAndPort;

public class HostAndPortDeserializer extends FromStringDeserializer
{
    private static final long serialVersionUID = 1L;

    public final static HostAndPortDeserializer std = new HostAndPortDeserializer();
    
    public HostAndPortDeserializer() { super(HostAndPort.class); }

    @Override
    public HostAndPort deserialize(JsonParser jp, DeserializationContext ctxt)
        throws IOException
    {
        // Need to override this method, which otherwise would work just fine,
        // since we have legacy JSON Object format to support too:
        if (jp.getCurrentToken() == JsonToken.START_OBJECT) { // old style
            JsonNode root = jp.readValueAsTree();
            String host = root.path("hostText").asText();
            JsonNode n = root.get("port");
            if (n == null) {
                return HostAndPort.fromString(host);
            }
            return HostAndPort.fromParts(host, n.asInt());
        }
        return super.deserialize(jp, ctxt);
    }

    @Override
    protected HostAndPort _deserialize(String value, DeserializationContext ctxt)
            throws IOException {
        return HostAndPort.fromString(value);
    }
}