NotSpecification.java

package com.cheng.zenofdesignpatterns.extension.newpatterns.specification.userquery;

/**
 * 非规格说明书
 */
public class NotSpecification extends CompositeSpecification {

    // 传递一个规格书
    private IUserSpecification spec;

    public NotSpecification(IUserSpecification _spec) {
        this.spec = _spec;
    }

    // not操作
    @Override
    public boolean isSatisfiedBy(User user) {
        return !spec.isSatisfiedBy(user);
    }

}