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目录

概述

ActivitiListener的是一个非常常见的需求。

需求：

设计思路

实现思路分析

1.ActivitiListener

protected String event;
  protected String implementationType;
  protected String implementation;
  protected List<FieldExtension> fieldExtensions = new ArrayList<FieldExtension>();
  protected String onTransaction;
  protected String customPropertiesResolverImplementationType;
  protected String customPropertiesResolverImplementation;

2.Activity

public abstract class Activity extends FlowNode {

  protected String defaultFlow;
  protected boolean forCompensation;
  protected MultiInstanceLoopCharacteristics loopCharacteristics;
  protected IOSpecification ioSpecification;
  protected List<DataAssociation> dataInputAssociations = new ArrayList<DataAssociation>();
  protected List<DataAssociation> dataOutputAssociations = new ArrayList<DataAssociation>();
  protected List<BoundaryEvent> boundaryEvents = new ArrayList<BoundaryEvent>();
  protected String failedJobRetryTimeCycleValue;
  protected List<MapExceptionEntry> mapExceptions = new ArrayList<MapExceptionEntry>();

  public String getFailedJobRetryTimeCycleValue() {
    return failedJobRetryTimeCycleValue;
  }

  public void setFailedJobRetryTimeCycleValue(String failedJobRetryTimeCycleValue) {
    this.failedJobRetryTimeCycleValue = failedJobRetryTimeCycleValue;
  }

3.Gateway

public class ExclusiveGateway extends Gateway {

  public ExclusiveGateway clone() {
    ExclusiveGateway clone = new ExclusiveGateway();
    clone.setValues(this);
    return clone;
  }

  public void setValues(ExclusiveGateway otherElement) {
    super.setValues(otherElement);
  }
}

5.FieldExtension

ublic class FieldExtension extends BaseElement {

  protected String fieldName;
  protected String stringValue;
  protected String expression;

  public FieldExtension() {

  }

  public String getFieldName() {
    return fieldName;
  }

  public void setFieldName(String fieldName) {
    this.fieldName = fieldName;
  }

  public String getStringValue() {
    return stringValue;
  }

  public void setStringValue(String stringValue) {
    this.stringValue = stringValue;
  }

  public String getExpression() {
    return expression;
  }

  public void setExpression(String expression) {
    this.expression = expression;
  }

  public FieldExtension clone() {
    FieldExtension clone = new FieldExtension();
    clone.setValues(this);
    return clone;
  }

  public void setValues(FieldExtension otherExtension) {
    setFieldName(otherExtension.getFieldName());
    setStringValue(otherExtension.getStringValue());
    setExpression(otherExtension.getExpression());
  }
}

IOSpecification

public class IOSpecification extends BaseElement {

  protected List<DataSpec> dataInputs = new ArrayList<DataSpec>();
  protected List<DataSpec> dataOutputs = new ArrayList<DataSpec>();
  protected List<String> dataInputRefs = new ArrayList<String>();
  protected List<String> dataOutputRefs = new ArrayList<String>();

  public List<DataSpec> getDataInputs() {
    return dataInputs;
  }

  public void setDataInputs(List<DataSpec> dataInputs) {
    this.dataInputs = dataInputs;
  }

  public List<DataSpec> getDataOutputs() {
    return dataOutputs;
  }

  public void setDataOutputs(List<DataSpec> dataOutputs) {
    this.dataOutputs = dataOutputs;
  }

  public List<String> getDataInputRefs() {
    return dataInputRefs;
  }

  public void setDataInputRefs(List<String> dataInputRefs) {
    this.dataInputRefs = dataInputRefs;
  }

  public List<String> getDataOutputRefs() {
    return dataOutputRefs;
  }

  public void setDataOutputRefs(List<String> dataOutputRefs) {
    this.dataOutputRefs = dataOutputRefs;
  }

  public IOSpecification clone() {
    IOSpecification clone = new IOSpecification();
    clone.setValues(this);
    return clone;
  }

  public void setValues(IOSpecification otherSpec) {
    dataInputs = new ArrayList<DataSpec>();
    if (otherSpec.getDataInputs() != null && !otherSpec.getDataInputs().isEmpty()) {
      for (DataSpec dataSpec : otherSpec.getDataInputs()) {
        dataInputs.add(dataSpec.clone());
      }
    }

    dataOutputs = new ArrayList<DataSpec>();
    if (otherSpec.getDataOutputs() != null && !otherSpec.getDataOutputs().isEmpty()) {
      for (DataSpec dataSpec : otherSpec.getDataOutputs()) {
        dataOutputs.add(dataSpec.clone());
      }
    }

    dataInputRefs = new ArrayList<String>(otherSpec.getDataInputRefs());
    dataOutputRefs = new ArrayList<String>(otherSpec.getDataOutputRefs());
  }
}

参考资料和推荐阅读

[1].www.activaty.org

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