org.activiti.engine.impl.variable.DeserializedObject Maven / Gradle / Ivy
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/* 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.variable;
import org.activiti.engine.impl.persistence.entity.VariableInstanceEntity;
import java.util.Arrays;
/**
*/
public class DeserializedObject {
protected SerializableType type;
protected Object deserializedObject;
protected byte[] originalBytes;
protected VariableInstanceEntity variableInstanceEntity;
public DeserializedObject(SerializableType type, Object deserializedObject, byte[] serializedBytes, VariableInstanceEntity variableInstanceEntity) {
this.type = type;
this.deserializedObject = deserializedObject;
this.originalBytes = serializedBytes;
this.variableInstanceEntity = variableInstanceEntity;
}
public void verifyIfBytesOfSerializedObjectChanged() {
// this first check verifies if the variable value was not overwritten with another object
if (deserializedObject == variableInstanceEntity.getCachedValue() && !variableInstanceEntity.isDeleted()) {
byte[] bytes = type.serialize(deserializedObject, variableInstanceEntity);
if (!Arrays.equals(originalBytes, bytes)) {
// Add an additional check to prevent byte differences due to JDK changes etc
Object originalObject = type.deserialize(originalBytes, variableInstanceEntity);
byte[] refreshedOriginalBytes = type.serialize(originalObject, variableInstanceEntity);
if (!Arrays.equals(refreshedOriginalBytes, bytes)) {
variableInstanceEntity.setBytes(bytes);
}
}
}
}
}