source: references/src/main/java/geniusweb/references/ProtocolRef.java@ 44

package geniusweb.references;

import java.net.URI;
import java.net.URISyntaxException;

import com.fasterxml.jackson.annotation.JsonCreator;
import com.fasterxml.jackson.annotation.JsonValue;

/**
 * A URI reference to create a new instance of a protocol on a party server.
 * There is currently no real protocol server, instead the protocol is created
 * locally on the party server and used only there. Refer to the PartyServer for
 * the available protocols.
 */
public class ProtocolRef implements Reference {
        @JsonValue // serializes nicely but requires custom deserializer.
        private URI protocol;

        @JsonCreator // special: we need URI so no @JsonProperty
        public ProtocolRef(String uri) {
                if (uri == null) {
                        throw new IllegalArgumentException("uri=null");
                }
                try {
                        this.protocol = new URI(uri);
                } catch (URISyntaxException e) {
                        throw new IllegalArgumentException("Illegal string for URI", e);
                }
        }

        public ProtocolRef(URI uri) {
                if (uri == null) {
                        throw new IllegalArgumentException("uri=null");
                }
                this.protocol = uri;
        }

        @Override
        public URI getURI() {
                return protocol;
        }

        @Override
        public String toString() {
                return "ProtocolRef[" + protocol + "]";
        }

        @Override
        public int hashCode() {
                final int prime = 31;
                int result = 1;
                result = prime * result
                                + ((protocol == null) ? 0 : protocol.hashCode());
                return result;
        }

        @Override
        public boolean equals(Object obj) {
                if (this == obj)
                        return true;
                if (obj == null)
                        return false;
                if (getClass() != obj.getClass())
                        return false;
                ProtocolRef other = (ProtocolRef) obj;
                if (protocol == null) {
                        if (other.protocol != null)
                                return false;
                } else if (!protocol.equals(other.protocol))
                        return false;
                return true;
        }
}