com.pig4cloud.pigx.common.sequence.builder.DbSeqBuilder Maven / Gradle / Ivy
package com.pig4cloud.pigx.common.sequence.builder;
import com.pig4cloud.pigx.common.sequence.range.BizName;
import com.pig4cloud.pigx.common.sequence.range.impl.db.DbSeqRangeMgr;
import com.pig4cloud.pigx.common.sequence.sequence.Sequence;
import com.pig4cloud.pigx.common.sequence.sequence.impl.DefaultRangeSequence;
import javax.sql.DataSource;
/**
* 基于DB取步长，序列号生成器构建者
*
* @author xuan
*/
public class DbSeqBuilder implements SeqBuilder {
/**
* 数据库数据源[必选]
*/
private DataSource dataSource;
/**
* 业务名称[必选]
*/
private BizName bizName;
/**
* 存放序列号步长的表[可选：默认：sequence]
*/
private String tableName = "sequence";
/**
* 并发是数据使用了乐观策略，这个是失败重试的次数[可选：默认：100]
*/
private int retryTimes = 100;
/**
* 获取range步长[可选：默认：1000]
*/
private int step = 1000;
/**
* 序列号分配起始值[可选：默认：0]
*/
private long stepStart = 0;
public static DbSeqBuilder create() {
DbSeqBuilder builder = new DbSeqBuilder();
return builder;
}
@Override
public Sequence build() {
// 利用DB获取区间管理器
DbSeqRangeMgr dbSeqRangeMgr = new DbSeqRangeMgr();
dbSeqRangeMgr.setDataSource(this.dataSource);
dbSeqRangeMgr.setTableName(this.tableName);
dbSeqRangeMgr.setRetryTimes(this.retryTimes);
dbSeqRangeMgr.setStep(this.step);
dbSeqRangeMgr.setStepStart(stepStart);
dbSeqRangeMgr.init();
// 构建序列号生成器
DefaultRangeSequence sequence = new DefaultRangeSequence();
sequence.setName(this.bizName);
sequence.setSeqRangeMgr(dbSeqRangeMgr);
return sequence;
}
public DbSeqBuilder dataSource(DataSource dataSource) {
this.dataSource = dataSource;
return this;
}
public DbSeqBuilder tableName(String tableName) {
this.tableName = tableName;
return this;
}
public DbSeqBuilder retryTimes(int retryTimes) {
this.retryTimes = retryTimes;
return this;
}
public DbSeqBuilder step(int step) {
this.step = step;
return this;
}
public DbSeqBuilder bizName(BizName bizName) {
this.bizName = bizName;
return this;
}
public DbSeqBuilder stepStart(long stepStart) {
this.stepStart = stepStart;
return this;
}
}