flowableのID生成器

1.  ID生成器

• DbIdGenerator
• StrongUuidGenerator
• 自定义生成器

2. 在流程配置类ProcessEngineConfigurationImpl中初始化生成

    @Override
    public void initIdGenerator() {
        if (idGenerator == null) {
            DbIdGenerator dbIdGenerator = new DbIdGenerator();
            dbIdGenerator.setIdBlockSize(idBlockSize);
            idGenerator = dbIdGenerator;
        }

        if (idGenerator instanceof DbIdGenerator) {
            DbIdGenerator dbIdGenerator = (DbIdGenerator) idGenerator;
            if (dbIdGenerator.getIdBlockSize() == 0) {
                dbIdGenerator.setIdBlockSize(idBlockSize);
            }
            if (dbIdGenerator.getCommandExecutor() == null) {
                dbIdGenerator.setCommandExecutor(getCommandExecutor());
            }
            if (dbIdGenerator.getCommandConfig() == null) {
                dbIdGenerator.setCommandConfig(getDefaultCommandConfig().transactionRequiresNew());
            }
        }
    }

3.  自定义ID生成器实现IdGenerator

import org.flowable.common.engine.impl.cfg.IdGenerator;
import java.util.UUID;

public class McmUuidGenerator implements IdGenerator {
    @Override
    public String getNextId() {
        return "mcm_"+UUID.randomUUID().toString();
    }
}

4.  在配置类中设置

@Configuration
public class FlowableConfig implements EngineConfigurationConfigurer<SpringProcessEngineConfiguration> {
    @Override
    public void configure(SpringProcessEngineConfiguration engineConfiguration) {
        engineConfiguration.setActivityFontName("宋体");
        engineConfiguration.setLabelFontName("宋体");
        engineConfiguration.setAnnotationFontName("宋体");
        engineConfiguration.setIdGenerator(new McmUuidGenerator());//自定义id生成器
    }

}