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package org.activiti.engine.impl.util.condition;
import org.activiti.bpmn.model.SequenceFlow;
import org.activiti.engine.DynamicBpmnConstants;
import org.activiti.engine.delegate.DelegateExecution;
import org.activiti.engine.delegate.Expression;
import org.activiti.engine.impl.Condition;
import org.activiti.engine.impl.context.Context;
import org.activiti.engine.impl.el.UelExpressionCondition;
import org.apache.commons.lang3.StringUtils;
import com.fasterxml.jackson.databind.JsonNode;
import com.fasterxml.jackson.databind.node.ObjectNode;
/**
*/
public class ConditionUtil {
public static boolean hasTrueCondition(SequenceFlow sequenceFlow, DelegateExecution execution) {
String conditionExpression = null;
if (Context.getProcessEngineConfiguration().isEnableProcessDefinitionInfoCache()) {
ObjectNode elementProperties = Context.getBpmnOverrideElementProperties(sequenceFlow.getId(), execution.getProcessDefinitionId());
conditionExpression = getActiveValue(sequenceFlow.getConditionExpression(), DynamicBpmnConstants.SEQUENCE_FLOW_CONDITION, elementProperties);
} else {
conditionExpression = sequenceFlow.getConditionExpression();
}
if (StringUtils.isNotEmpty(conditionExpression)) {
Expression expression = Context.getProcessEngineConfiguration().getExpressionManager().createExpression(conditionExpression);
Condition condition = new UelExpressionCondition(expression);
if (condition.evaluate(sequenceFlow.getId(), execution)) {
return true;
}
return false;
} else {
return true;
}
}
protected static String getActiveValue(String originalValue, String propertyName, ObjectNode elementProperties) {
String activeValue = originalValue;
if (elementProperties != null) {
JsonNode overrideValueNode = elementProperties.get(propertyName);
if (overrideValueNode != null) {
if (overrideValueNode.isNull()) {
activeValue = null;
} else {
activeValue = overrideValueNode.asText();
}
}
}
return activeValue;
}
}
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