org.flowable.engine.impl.util.condition.ConditionUtil Maven / Gradle / Ivy
/* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.flowable.engine.impl.util.condition;
import org.apache.commons.lang3.StringUtils;
import org.flowable.bpmn.model.SequenceFlow;
import org.flowable.common.engine.api.delegate.Expression;
import org.flowable.engine.DynamicBpmnConstants;
import org.flowable.engine.delegate.DelegateExecution;
import org.flowable.engine.impl.Condition;
import org.flowable.engine.impl.context.BpmnOverrideContext;
import org.flowable.engine.impl.el.UelExpressionCondition;
import org.flowable.engine.impl.util.CommandContextUtil;
import com.fasterxml.jackson.databind.JsonNode;
import com.fasterxml.jackson.databind.node.ObjectNode;
/**
* @author Joram Barrez
* @author Tijs Rademakers
*/
public class ConditionUtil {
public static boolean hasTrueCondition(SequenceFlow sequenceFlow, DelegateExecution execution) {
String conditionExpression = null;
if (CommandContextUtil.getProcessEngineConfiguration().isEnableProcessDefinitionInfoCache()) {
ObjectNode elementProperties = BpmnOverrideContext.getBpmnOverrideElementProperties(sequenceFlow.getId(), execution.getProcessDefinitionId());
conditionExpression = getActiveValue(sequenceFlow.getConditionExpression(), DynamicBpmnConstants.SEQUENCE_FLOW_CONDITION, elementProperties);
} else {
conditionExpression = sequenceFlow.getConditionExpression();
}
if (StringUtils.isNotEmpty(conditionExpression)) {
Expression expression = CommandContextUtil.getProcessEngineConfiguration().getExpressionManager().createExpression(conditionExpression);
Condition condition = new UelExpressionCondition(expression);
return condition.evaluate(sequenceFlow.getId(), execution);
} 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;
}
}