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/**
* Copyright (C) 2019 Bonitasoft S.A.
* Bonitasoft, 32 rue Gustave Eiffel - 38000 Grenoble
* This library is free software; you can redistribute it and/or modify it under the terms
* of the GNU Lesser General Public License as published by the Free Software Foundation
* version 2.1 of the License.
* This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
* See the GNU Lesser General Public License for more details.
* You should have received a copy of the GNU Lesser General Public License along with this
* program; if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth
* Floor, Boston, MA 02110-1301, USA.
**/
package org.bonitasoft.engine.execution.state;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import org.bonitasoft.engine.bpm.model.impl.BPMInstancesCreator;
import org.bonitasoft.engine.builder.BuilderFactory;
import org.bonitasoft.engine.commons.exceptions.SBonitaException;
import org.bonitasoft.engine.core.expression.control.api.ExpressionResolverService;
import org.bonitasoft.engine.core.expression.control.model.SExpressionContext;
import org.bonitasoft.engine.core.process.definition.model.SActivityDefinition;
import org.bonitasoft.engine.core.process.definition.model.SFlowElementContainerDefinition;
import org.bonitasoft.engine.core.process.definition.model.SProcessDefinition;
import org.bonitasoft.engine.core.process.definition.model.SStandardLoopCharacteristics;
import org.bonitasoft.engine.core.process.instance.api.ActivityInstanceService;
import org.bonitasoft.engine.core.process.instance.api.exceptions.SActivityExecutionException;
import org.bonitasoft.engine.core.process.instance.api.exceptions.SActivityStateExecutionException;
import org.bonitasoft.engine.core.process.instance.api.states.FlowNodeState;
import org.bonitasoft.engine.core.process.instance.api.states.StateCode;
import org.bonitasoft.engine.core.process.instance.model.SActivityInstance;
import org.bonitasoft.engine.core.process.instance.model.SFlowElementsContainerType;
import org.bonitasoft.engine.core.process.instance.model.SFlowNodeInstance;
import org.bonitasoft.engine.core.process.instance.model.SLoopActivityInstance;
import org.bonitasoft.engine.core.process.instance.model.SStateCategory;
import org.bonitasoft.engine.core.process.instance.model.builder.SLoopActivityInstanceBuilderFactory;
import org.bonitasoft.engine.data.instance.api.DataInstanceContainer;
import org.bonitasoft.engine.execution.ContainerRegistry;
import org.bonitasoft.engine.expression.ExpressionConstants;
import org.springframework.stereotype.Component;
@Component
public class ExecutingLoopActivityState implements FlowNodeState {
private final ExpressionResolverService expressionResolverService;
private final BPMInstancesCreator bpmInstancesCreator;
private final ContainerRegistry containerRegistry;
private final ActivityInstanceService activityInstanceService;
public ExecutingLoopActivityState(final ExpressionResolverService expressionResolverService,
final BPMInstancesCreator bpmInstancesCreator,
final ContainerRegistry containerRegistry, final ActivityInstanceService activityInstanceService) {
this.expressionResolverService = expressionResolverService;
this.bpmInstancesCreator = bpmInstancesCreator;
this.containerRegistry = containerRegistry;
this.activityInstanceService = activityInstanceService;
}
@Override
public StateCode execute(final SProcessDefinition processDefinition, final SFlowNodeInstance flowNodeInstance) {
return StateCode.DONE;
}
@Override
public int getId() {
return 24;
}
@Override
public boolean isStable() {
return true;
}
@Override
public boolean isTerminal() {
return false;
}
@Override
public String getName() {
return "executing";
}
@Override
public boolean notifyChildFlowNodeHasFinished(final SProcessDefinition processDefinition,
final SFlowNodeInstance parentInstance,
final SFlowNodeInstance childInstance)
throws SActivityStateExecutionException {
try {
final SLoopActivityInstance loopActivity = (SLoopActivityInstance) activityInstanceService
.getFlowNodeInstance(parentInstance.getId());// get it
if (loopActivity.getStateCategory() != SStateCategory.NORMAL) {
// if is not a normal state (aborting / canceling), return true to change state from executing to aborting / cancelling (ChildReadstate),
// without create a new child task
return true;
}
final SFlowElementContainerDefinition processContainer = processDefinition.getProcessContainer();
final SActivityDefinition activity = (SActivityDefinition) processContainer
.getFlowNode(parentInstance.getFlowNodeDefinitionId());
final SStandardLoopCharacteristics loopCharacteristics = (SStandardLoopCharacteristics) activity
.getLoopCharacteristics();
boolean loop = false;
final int loopCounter = loopActivity.getLoopCounter();
if (loopActivity.getLoopMax() > 0 && loopCounter >= loopActivity.getLoopMax()) {
return true;
}
final SStandardLoopCharacteristics standardLoop = loopCharacteristics;
final Map input = new HashMap<>(1);
input.put(ExpressionConstants.LOOP_COUNTER.getEngineConstantName(), loopActivity.getLoopCounter());
final SExpressionContext sExpressionContext = new SExpressionContext(loopActivity.getId(),
DataInstanceContainer.ACTIVITY_INSTANCE.name(),
loopActivity.getProcessDefinitionId(), input);
loop = (Boolean) expressionResolverService.evaluate(standardLoop.getLoopCondition(), sExpressionContext);
if (loop) {
final SLoopActivityInstanceBuilderFactory keyProvider = BuilderFactory
.get(SLoopActivityInstanceBuilderFactory.class);
final long rootProcessInstanceId = parentInstance
.getLogicalGroup(keyProvider.getRootProcessInstanceIndex());
final long parentProcessInstanceId = parentInstance
.getLogicalGroup(keyProvider.getParentProcessInstanceIndex());
final SFlowNodeInstance child = bpmInstancesCreator.createFlowNodeInstance(processDefinition.getId(),
parentInstance.getRootContainerId(),
parentInstance.getId(), SFlowElementsContainerType.FLOWNODE, activity, rootProcessInstanceId,
parentProcessInstanceId, true,
loopCounter + 1, SStateCategory.NORMAL, -1);
activityInstanceService.incrementLoopCounter(loopActivity);
activityInstanceService.setTokenCount(loopActivity, loopActivity.getTokenCount() + 1);
containerRegistry.executeFlowNode(child);
}
return !loop;
} catch (final SBonitaException e) {
throw new SActivityStateExecutionException(e);
}
}
@Override
public boolean shouldExecuteState(final SProcessDefinition processDefinition,
final SFlowNodeInstance flowNodeInstance) throws SActivityExecutionException {
List childrenOfAnActivity;
try {
childrenOfAnActivity = activityInstanceService.getChildrenOfAnActivity(flowNodeInstance.getId(), 0, 1);
if (!childrenOfAnActivity.isEmpty()) {
containerRegistry.executeFlowNode(childrenOfAnActivity.get(0));
}
return !childrenOfAnActivity.isEmpty();
} catch (final SBonitaException e) {
throw new SActivityExecutionException(e);
}
}
@Override
public SStateCategory getStateCategory() {
return SStateCategory.NORMAL;
}
@Override
public boolean mustAddSystemComment(final SFlowNodeInstance flowNodeInstance) {
return false;
}
@Override
public String getSystemComment(final SFlowNodeInstance flowNodeInstance) {
return "";
}
}
