org.squirrelframework.foundation.component.IdProvider Maven / Gradle / Ivy

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foundation module of squirrel framework which provided event driven infrastructure and a finite state machine implementation.

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package org.squirrelframework.foundation.component;

import java.util.UUID;

import org.apache.commons.lang3.RandomStringUtils;

public interface IdProvider {
    String get();
    
    public class Default implements IdProvider, SquirrelSingleton {
        private static IdProvider instance = new Default();

        public static IdProvider getInstance() {
            return instance;
        }

        public static void setInstance(IdProvider instance) {
            Default.instance = instance;
        }
        
        @Override
        public String get() {
            return RandomStringUtils.randomAlphanumeric(10);
        }
    }
    
    public class UUIDProvider implements IdProvider, SquirrelSingleton {
        private static IdProvider instance = new UUIDProvider();

        public static IdProvider getInstance() {
            return instance;
        }

        public static void setInstance(IdProvider instance) {
            UUIDProvider.instance = instance;
        }
        
        @Override
        public String get() {
            return UUID.randomUUID().toString();
        }
    }
}