org.activiti.engine.impl.bpmn.helper.DelegateExpressionUtil 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.activiti.engine.impl.bpmn.helper;
import org.activiti.engine.delegate.Expression;
import org.activiti.engine.delegate.VariableScope;
import org.activiti.engine.impl.bpmn.parser.FieldDeclaration;
import org.activiti.engine.impl.cfg.DelegateExpressionFieldInjectionMode;
import org.activiti.engine.impl.context.Context;
import java.util.List;
/**
*/
public class DelegateExpressionUtil {
public static Object resolveDelegateExpression(Expression expression, VariableScope variableScope) {
return resolveDelegateExpression(expression, variableScope, null);
}
public static Object resolveDelegateExpression(Expression expression,
VariableScope variableScope, List fieldDeclarations) {
// Note: we can't cache the result of the expression, because the
// execution can change: eg. delegateExpression='${mySpringBeanFactory.randomSpringBean()}'
Object delegate = expression.getValue(variableScope);
if (fieldDeclarations != null && fieldDeclarations.size() > 0) {
DelegateExpressionFieldInjectionMode injectionMode = Context.getProcessEngineConfiguration().getDelegateExpressionFieldInjectionMode();
if (injectionMode.equals(DelegateExpressionFieldInjectionMode.COMPATIBILITY)) {
ClassDelegate.applyFieldDeclaration(fieldDeclarations, delegate, true);
} else if (injectionMode.equals(DelegateExpressionFieldInjectionMode.MIXED)) {
ClassDelegate.applyFieldDeclaration(fieldDeclarations, delegate, false);
}
}
return delegate;
}
}