分布式ID选型对比（4）

百度UID generator

一, 创建表: worker_node(在项目启动时初始化生成workId)

CREATE TABLE `worker_node` (
  `ID` bigint NOT NULL AUTO_INCREMENT COMMENT 'auto increment id',
  `HOST_NAME` varchar(64) NOT NULL COMMENT 'host name',
  `PORT` varchar(64) NOT NULL COMMENT 'port',
  `TYPE` int NOT NULL COMMENT 'node type: ACTUAL or CONTAINER',
  `LAUNCH_DATE` date NOT NULL COMMENT 'launch date',
  `MODIFIED` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP COMMENT 'modified time',
  `CREATED` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP COMMENT 'created time',
  PRIMARY KEY (`ID`)
) ENGINE=InnoDB AUTO_INCREMENT=9 DEFAULT CHARSET=utf8mb3 COMMENT='DB WorkerID Assigner for UID Generator';

二, 创建Model及Exmple、Dao

Model: WorkerNode

package org.com.spi.model;

import java.util.Date;

public class WorkerNode {
    private Long id;

    private String hostName;

    private String port;

    private Integer type;

    private Date launchDate;

    private Date modified;

    private Date created;

    public Long getId() {
        return id;
    }

    public void setId(Long id) {
        this.id = id;
    }

    public String getHostName() {
        return hostName;
    }

    public void setHostName(String hostName) {
        this.hostName = hostName == null ? null : hostName.trim();
    }

    public String getPort() {
        return port;
    }

    public void setPort(String port) {
        this.port = port == null ? null : port.trim();
    }

    public Integer getType() {
        return type;
    }

    public void setType(Integer type) {
        this.type = type;
    }

    public Date getLaunchDate() {
        return launchDate;
    }

    public void setLaunchDate(Date launchDate) {
        this.launchDate = launchDate;
    }

    public Date getModified() {
        return modified;
    }

    public void setModified(Date modified) {
        this.modified = modified;
    }

    public Date getCreated() {
        return created;
    }

    public void setCreated(Date created) {
        this.created = created;
    }
}

Example: WorkerNodeExample

package org.com.spi.model;

import java.util.ArrayList;
import java.util.Date;
import java.util.Iterator;
import java.util.List;

public class WorkerNodeExample {
    protected String orderByClause;

    protected boolean distinct;

    protected List oredCriteria;

    public WorkerNodeExample() {
        oredCriteria = new ArrayList();
    }

    public void setOrderByClause(String orderByClause) {
        this.orderByClause = orderByClause;
    }

    public String getOrderByClause() {
        return orderByClause;
    }

    public void setDistinct(boolean distinct) {
        this.distinct = distinct;
    }

    public boolean isDistinct() {
        return distinct;
    }

    public List getOredCriteria() {
        return oredCriteria;
    }

    public void or(Criteria criteria) {
        oredCriteria.add(criteria);
    }

    public Criteria or() {
        Criteria criteria = createCriteriaInternal();
        oredCriteria.add(criteria);
        return criteria;
    }

    public Criteria createCriteria() {
        Criteria criteria = createCriteriaInternal();
        if (oredCriteria.size() == 0) {
            oredCriteria.add(criteria);
        }
        return criteria;
    }

    protected Criteria createCriteriaInternal() {
        Criteria criteria = new Criteria();
        return criteria;
    }

    public void clear() {
        oredCriteria.clear();
        orderByClause = null;
        distinct = false;
    }

    protected abstract static class GeneratedCriteria {
        protected List criteria;

        protected GeneratedCriteria() {
            super();
            criteria = new ArrayList();
        }

        public boolean isValid() {
            return criteria.size() > 0;
        }

        public List getAllCriteria() {
            return criteria;
        }

        public List getCriteria() {
            return criteria;
        }

        protected void addCriterion(String condition) {
            if (condition == null) {
                throw new RuntimeException("Value for condition cannot be null");
            }
            criteria.add(new Criterion(condition));
        }

        protected void addCriterion(String condition, Object value, String property) {
            if (value == null) {
                throw new RuntimeException("Value for " + property + " cannot be null");
            }
            criteria.add(new Criterion(condition, value));
        }

        protected void addCriterion(String condition, Object value1, Object value2, String property) {
            if (value1 == null || value2 == null) {
                throw new RuntimeException("Between values for " + property + " cannot be null");
            }
            criteria.add(new Criterion(condition, value1, value2));
        }

        protected void addCriterionForJDBCDate(String condition, Date value, String property) {
            if (value == null) {
                throw new RuntimeException("Value for " + property + " cannot be null");
            }
            addCriterion(condition, new java.sql.Date(value.getTime()), property);
        }

        protected void addCriterionForJDBCDate(String condition, List values, String property) {
            if (values == null || values.size() == 0) {
                throw new RuntimeException("Value list for " + property + " cannot be null or empty");
            }
            List dateList = new ArrayList();
            Iterator iter = values.iterator();
            while (iter.hasNext()) {
                dateList.add(new java.sql.Date(iter.next().getTime()));
            }
            addCriterion(condition, dateList, property);
        }

        protected void addCriterionForJDBCDate(String condition, Date value1, Date value2, String property) {
            if (value1 == null || value2 == null) {
                throw new RuntimeException("Between values for " + property + " cannot be null");
            }
            addCriterion(condition, new java.sql.Date(value1.getTime()), new java.sql.Date(value2.getTime()), property);
        }

        public Criteria andIdIsNull() {
            addCriterion("ID is null");
            return (Criteria) this;
        }

        public Criteria andIdIsNotNull() {
            addCriterion("ID is not null");
            return (Criteria) this;
        }

        public Criteria andIdEqualTo(Long value) {
            addCriterion("ID =", value, "id");
            return (Criteria) this;
        }

        public Criteria andIdNotEqualTo(Long value) {
            addCriterion("ID <>", value, "id");
            return (Criteria) this;
        }

        public Criteria andIdGreaterThan(Long value) {
            addCriterion("ID >", value, "id");
            return (Criteria) this;
        }

        public Criteria andIdGreaterThanOrEqualTo(Long value) {
            addCriterion("ID >=", value, "id");
            return (Criteria) this;
        }

        public Criteria andIdLessThan(Long value) {
            addCriterion("ID <", value, "id");
            return (Criteria) this;
        }

        public Criteria andIdLessThanOrEqualTo(Long value) {
            addCriterion("ID <=", value, "id");
            return (Criteria) this;
        }

        public Criteria andIdIn(List values) {
            addCriterion("ID in", values, "id");
            return (Criteria) this;
        }

        public Criteria andIdNotIn(List values) {
            addCriterion("ID not in", values, "id");
            return (Criteria) this;
        }

        public Criteria andIdBetween(Long value1, Long value2) {
            addCriterion("ID between", value1, value2, "id");
            return (Criteria) this;
        }

        public Criteria andIdNotBetween(Long value1, Long value2) {
            addCriterion("ID not between", value1, value2, "id");
            return (Criteria) this;
        }

        public Criteria andHostNameIsNull() {
            addCriterion("HOST_NAME is null");
            return (Criteria) this;
        }

        public Criteria andHostNameIsNotNull() {
            addCriterion("HOST_NAME is not null");
            return (Criteria) this;
        }

        public Criteria andHostNameEqualTo(String value) {
            addCriterion("HOST_NAME =", value, "hostName");
            return (Criteria) this;
        }

        public Criteria andHostNameNotEqualTo(String value) {
            addCriterion("HOST_NAME <>", value, "hostName");
            return (Criteria) this;
        }

        public Criteria andHostNameGreaterThan(String value) {
            addCriterion("HOST_NAME >", value, "hostName");
            return (Criteria) this;
        }

        public Criteria andHostNameGreaterThanOrEqualTo(String value) {
            addCriterion("HOST_NAME >=", value, "hostName");
            return (Criteria) this;
        }

        public Criteria andHostNameLessThan(String value) {
            addCriterion("HOST_NAME <", value, "hostName");
            return (Criteria) this;
        }

        public Criteria andHostNameLessThanOrEqualTo(String value) {
            addCriterion("HOST_NAME <=", value, "hostName");
            return (Criteria) this;
        }

        public Criteria andHostNameLike(String value) {
            addCriterion("HOST_NAME like", value, "hostName");
            return (Criteria) this;
        }

        public Criteria andHostNameNotLike(String value) {
            addCriterion("HOST_NAME not like", value, "hostName");
            return (Criteria) this;
        }

        public Criteria andHostNameIn(List values) {
            addCriterion("HOST_NAME in", values, "hostName");
            return (Criteria) this;
        }

        public Criteria andHostNameNotIn(List values) {
            addCriterion("HOST_NAME not in", values, "hostName");
            return (Criteria) this;
        }

        public Criteria andHostNameBetween(String value1, String