/* 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.persistence.entity;
import java.util.ArrayList;
import java.util.Collection;
import org.activiti.engine.impl.context.Context;
/**
* List that initialises binary variable values if command-context is active.
*
* @author Frederik Heremans
*/
public class VariableInitializingList extends ArrayList<VariableInstanceEntity> {
private static final long serialVersionUID = 1L;
@Override
public void add(int index, VariableInstanceEntity e) {
super.add(index, e);
initializeBinaryVariable(e);
}
@Override
public boolean add(VariableInstanceEntity e) {
initializeBinaryVariable(e);
return super.add(e);
}
@Override
public boolean addAll(Collection< ? extends VariableInstanceEntity> c) {
for(VariableInstanceEntity e : c) {
initializeBinaryVariable(e);
}
return super.addAll(c);
}
@Override
public boolean addAll(int index, Collection< ? extends VariableInstanceEntity> c) {
for(VariableInstanceEntity e : c) {
initializeBinaryVariable(e);
}
return super.addAll(index, c);
}
/**
* If the passed {@link VariableInstanceEntity} is a binary variable and the command-context is active,
* the variable value is fetched to ensure the byte-array is populated.
*/
@SuppressWarnings("deprecation")
protected void initializeBinaryVariable(VariableInstanceEntity e) {
if(Context.getCommandContext() != null && e != null && e.getByteArrayValueId() != null) {
e.getValue();
}
}
}