source: events/src/main/java/geniusweb/actions/PartyId.java@ 3

package geniusweb.actions;

import com.fasterxml.jackson.annotation.JsonValue;

/**
 * Globally (that is, worldwide) unique ID of a party in a negotiation.
 * Normally, negotiation parties should not create new Party IDs as all needed
 * IDs should be provided by the protocol. Serializes only as part of a bigger
 * object. This ID may contain parts of an ip address but that address should
 * not be used to make contact.
 */
public final class PartyId {
        @JsonValue
        private final String name;

        /**
         * 
         * @param name a simple name, starting with letter, followed by zero or more
         *             letters, digits or _.
         */
        public PartyId(String name) {
                if (name == null || !name.matches("[a-zA-Z]\\w*")) {
                        throw new IllegalArgumentException("name '" + name
                                        + "' is not a letter followed by zero or more word characters (letter, digit or _)");
                }
                this.name = name;
        }

        public String getName() {
                return name;
        }

        @Override
        public String toString() {
                return name;
        }

        @Override
        public int hashCode() {
                final int prime = 31;
                int result = 1;
                result = prime * result + ((name == null) ? 0 : name.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;
                PartyId other = (PartyId) obj;
                if (name == null) {
                        if (other.name != null)
                                return false;
                } else if (!name.equals(other.name))
                        return false;
                return true;
        }

}