新建

李林

2023-10-07 658d4927d468c47208fd012d9128b09249c07eff

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package com.chinaztt.mes.technology.state.structure;
 
import com.chinaztt.mes.technology.entity.Structure;
import com.chinaztt.mes.technology.state.structure.constant.StructureEvents;
import com.chinaztt.mes.technology.state.structure.constant.StructureStates;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.statemachine.StateMachineContext;
import org.springframework.statemachine.StateMachinePersist;
import org.springframework.statemachine.config.EnableStateMachineFactory;
import org.springframework.statemachine.config.EnumStateMachineConfigurerAdapter;
import org.springframework.statemachine.config.builders.StateMachineConfigurationConfigurer;
import org.springframework.statemachine.config.builders.StateMachineStateConfigurer;
import org.springframework.statemachine.config.builders.StateMachineTransitionConfigurer;
import org.springframework.statemachine.persist.DefaultStateMachinePersister;
import org.springframework.statemachine.persist.StateMachinePersister;
import org.springframework.statemachine.support.DefaultStateMachineContext;
 
import java.util.EnumSet;
 
/**
 * @Author: zhangxy
 * @Date: 2020-08-24 17:21
 */
@Configuration
@EnableStateMachineFactory(name = "structureStateMachineFactory")
public class StructureStateMachineConfig extends EnumStateMachineConfigurerAdapter<StructureStates, StructureEvents> {
 
    public final static String MACHINE_ID = "structureStateMachine";
 
    @Override
    public void configure(StateMachineStateConfigurer<StructureStates, StructureEvents> states) throws Exception {
        states.withStates()
                .initial(StructureStates.DRAFT)
                .states(EnumSet.allOf(StructureStates.class));
    }
 
    @Override
    public void configure(StateMachineTransitionConfigurer<StructureStates, StructureEvents> transitions) throws Exception {
        transitions
                .withExternal()
                .source(StructureStates.DRAFT).target(StructureStates.ACCEPTED)
                .event(StructureEvents.ACCEPT)
                .and()
                .withExternal()
                .source(StructureStates.ACCEPTED).target(StructureStates.DRAFT)
                .event(StructureEvents.REVOKE)
                .and()
                .withExternal()
                .source(StructureStates.ACCEPTED).target(StructureStates.CANCELLED)
                .event(StructureEvents.CANCEL);
    }
 
    @Override
    public void configure(StateMachineConfigurationConfigurer<StructureStates, StructureEvents> config)
            throws Exception {
        config.withConfiguration().machineId(MACHINE_ID);
    }
 
    /**
     * 持久化配置
     *
     * @return
     */
    @Bean(name = "structurePersister")
    public StateMachinePersister<StructureStates, StructureEvents, Structure> persister() {
        return new DefaultStateMachinePersister<>(new StateMachinePersist<StructureStates, StructureEvents, Structure>() {
            @Override
            public void write(StateMachineContext<StructureStates, StructureEvents> stateMachineContext, Structure structure) throws Exception {
 
            }
 
            @Override
            public StateMachineContext<StructureStates, StructureEvents> read(Structure structure) throws Exception {
                StateMachineContext<StructureStates, StructureEvents> result = new DefaultStateMachineContext<StructureStates, StructureEvents>(StructureStates.getEnum(structure.getState()),
                        null, null, null, null, MACHINE_ID);
                return result;
            }
        });
    }
 
}