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Kamil Patryk Kozakowski
2026-06-06 15:07:03 +02:00
parent 00161b294c
commit cc66b7517b
88 changed files with 1090 additions and 79 deletions
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159
state_machines/complex_state_machine/src/main/java/click/kamil/examples/statemachine/complex/ComplexStateMachineConfig.java Normal file
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package click.kamil.examples.statemachine.complex;
import org.springframework.context.annotation.Configuration;
import org.springframework.statemachine.action.Action;
import org.springframework.statemachine.config.EnableStateMachineFactory;
import org.springframework.statemachine.config.StateMachineConfigurerAdapter;
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.guard.Guard;
import java.util.EnumSet;
@Configuration
@EnableStateMachineFactory(name = "complexStateMachineFactory")
public class ComplexStateMachineConfig extends StateMachineConfigurerAdapter<ComplexStateMachineConfig.States, ComplexStateMachineConfig.Events> {
public enum States {
STATE1, STATE2, STATE3, STATE4, STATE5,
STATE6, STATE7, STATE8, STATE9, STATE10,
STATE11, STATE12, STATE13, STATE14, STATE15,
STATE16, STATE17, STATE18, STATE19, STATE20
}
public enum Events {
EVENT1, EVENT2, EVENT3, EVENT4, EVENT5,
EVENT6, EVENT7, EVENT8, EVENT9, EVENT10,
EVENT11, EVENT12, EVENT13, EVENT14, EVENT15
}
@Override
public void configure(StateMachineConfigurationConfigurer<States, Events> config) throws Exception {
config
.withConfiguration()
.autoStartup(true);
}
@Override
public void configure(StateMachineStateConfigurer<States, Events> states) throws Exception {
states
.withStates()
.initial(States.STATE1)
.states(EnumSet.allOf(States.class))
.stateEntry(States.STATE5, logEntryAction("Entered STATE5"))
.stateExit(States.STATE10, logExitAction("Exited STATE10"));
}
@Override
public void configure(StateMachineTransitionConfigurer<States, Events> transitions) throws Exception {
// External transitions
transitions
.withExternal().source(States.STATE1).target(States.STATE2).event(Events.EVENT1)
.and()
.withExternal().source(States.STATE2).target(States.STATE3).event(Events.EVENT2)
.and()
.withExternal().source(States.STATE3).target(States.STATE4).event(Events.EVENT3)
.and()
.withExternal().source(States.STATE4).target(States.STATE5).event(Events.EVENT4)
.and()
.withExternal().source(States.STATE5).target(States.STATE6).event(Events.EVENT5)
.and()
.withExternal().source(States.STATE6).target(States.STATE7).event(Events.EVENT6)
.and()
.withExternal().source(States.STATE7).target(States.STATE8).event(Events.EVENT7)
.and()
.withExternal().source(States.STATE8).target(States.STATE9).event(Events.EVENT8)
.and()
.withExternal().source(States.STATE9).target(States.STATE10).event(Events.EVENT9)
.and()
.withExternal().source(States.STATE10).target(States.STATE11).event(Events.EVENT10)
.and()
.withExternal().source(States.STATE11).target(States.STATE12).event(Events.EVENT11)
.and()
.withExternal().source(States.STATE12).target(States.STATE13).event(Events.EVENT12)
.and()
.withExternal().source(States.STATE13).target(States.STATE14).event(Events.EVENT13)
.and()
.withExternal().source(States.STATE14).target(States.STATE15).event(Events.EVENT14)
.and()
.withExternal().source(States.STATE15).target(States.STATE16).event(Events.EVENT15);
// Choice transitions (at least 10)
transitions
.withChoice()
.source(States.STATE16)
.first(States.STATE17, guardVarEquals("value1"))
.then(States.STATE18, guardVarEquals("value2"))
.last(States.STATE19)
.and()
.withChoice()
.source(States.STATE17)
.first(States.STATE20, guardEventHeaderEquals("header1", "foo"))
.last(States.STATE16)
.and()
.withChoice()
.source(States.STATE18)
.first(States.STATE19, guardVarEquals("value3"))
.last(States.STATE20)
.and()
.withChoice()
.source(States.STATE19)
.first(States.STATE1, guardVarEquals("reset"))
.last(States.STATE20)
.and()
.withChoice()
.source(States.STATE20)
.first(States.STATE5, guardEventHeaderEquals("header2", "bar"))
.last(States.STATE1)
.and()
.withChoice()
.source(States.STATE11)
.first(States.STATE13, guardVarEquals("goTo13"))
.then(States.STATE14, guardVarEquals("goTo14"))
.last(States.STATE15)
.and()
.withChoice()
.source(States.STATE12)
.first(States.STATE10, guardVarEquals("goBack10"))
.last(States.STATE11)
.and()
.withChoice()
.source(States.STATE14)
.first(States.STATE12, guardVarEquals("loop12"))
.last(States.STATE16)
.and()
.withChoice()
.source(States.STATE9)
.first(States.STATE8, guardVarEquals("stepBack"))
.then(States.STATE7, guardVarEquals("stepBackMore"))
.last(States.STATE6)
.and()
.withChoice()
.source(States.STATE8)
.first(States.STATE9, guardVarEquals("forward9"))
.last(States.STATE10);
}
private Guard<States, Events> guardVarEquals(String expected) {
return context -> {
Object var = context.getExtendedState().getVariables().get("var");
return expected.equals(var);
};
}
private Guard<States, Events> guardEventHeaderEquals(String headerName, String expected) {
return context -> {
Object header = context.getMessageHeader(headerName);
return expected.equals(header);
};
}
private Action<States, Events> logEntryAction(String msg) {
return context -> System.out.println(msg);
}
private Action<States, Events> logExitAction(String msg) {
return context -> System.out.println(msg);
}
}

11
state_machines/complex_state_machine/src/main/java/click/kamil/examples/statemachine/complex/app/StateMachineApplication.java Normal file
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package click.kamil.examples.statemachine.complex.app;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
@SpringBootApplication
class StateMachineApplication {
public static void main(String[] args) {
SpringApplication.run(StateMachineApplication.class, args);
}
}

1
state_machines/complex_state_machine/src/main/resources/application.properties Normal file
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spring.application.name=statemachinedemo

11
state_machines/complex_state_machine/src/test/java/click/kamil/examples/statemachine/MyTest.java Normal file
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package click.kamil.examples.statemachine;
import org.junit.jupiter.api.Test;
class MyTest {
@Test
void contextLoads() {
}
}