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package org.activiti.engine.history;
import org.activiti.engine.api.internal.Internal;
import org.activiti.engine.task.Comment;
/**
* Allows to fetch the {@link ProcessInstanceHistoryLog} for a process instance.
*
* Note that every includeXXX() method below will lead to an additional query.
*
* This class is actually a convenience on top of the other specific queries such as {@link HistoricTaskInstanceQuery}, {@link HistoricActivityInstanceQuery}, ... It will execute separate queries for
* each included type, order the data according to the date (ascending) and wrap the results in the {@link ProcessInstanceHistoryLog}.
*
*/
@Internal
public interface ProcessInstanceHistoryLogQuery {
/**
* The {@link ProcessInstanceHistoryLog} will contain the {@link HistoricTaskInstance} instances.
*/
ProcessInstanceHistoryLogQuery includeTasks();
/**
* The {@link ProcessInstanceHistoryLog} will contain the {@link HistoricActivityInstance} instances.
*/
ProcessInstanceHistoryLogQuery includeActivities();
/**
* The {@link ProcessInstanceHistoryLog} will contain the {@link HistoricVariableInstance} instances.
*/
ProcessInstanceHistoryLogQuery includeVariables();
/**
* The {@link ProcessInstanceHistoryLog} will contain the {@link Comment} instances.
*/
ProcessInstanceHistoryLogQuery includeComments();
/**
* The {@link ProcessInstanceHistoryLog} will contain the {@link HistoricVariableUpdate} instances.
*/
ProcessInstanceHistoryLogQuery includeVariableUpdates();
/**
* The {@link ProcessInstanceHistoryLog} will contain the {@link HistoricFormProperty} instances.
*/
ProcessInstanceHistoryLogQuery includeFormProperties();
/** Executes the query. */
ProcessInstanceHistoryLog singleResult();
}