Query (Activiti :: Engine 7.1.0.M6 API)

All Known Subinterfaces:

DeadLetterJobQuery, DeploymentQuery, ExecutionQuery, HistoricActivityInstanceQuery, HistoricDetailQuery, HistoricProcessInstanceQuery, HistoricTaskInstanceQuery, HistoricVariableInstanceQuery, JobQuery, ModelQuery, ProcessDefinitionQuery, ProcessInstanceQuery, SuspendedJobQuery, TaskInfoQuery<T,V>, TaskQuery, TimerJobQuery

All Known Implementing Classes:

AbstractQuery, AbstractVariableQueryImpl, DeadLetterJobQueryImpl, DeploymentQueryImpl, EventSubscriptionQueryImpl, ExecutionQueryImpl, HistoricActivityInstanceQueryImpl, HistoricDetailQueryImpl, HistoricProcessInstanceQueryImpl, HistoricTaskInstanceQueryImpl, HistoricVariableInstanceQueryImpl, JobQueryImpl, ModelQueryImpl, ProcessDefinitionQueryImpl, ProcessInstanceQueryImpl, SuspendedJobQueryImpl, TaskQueryImpl, TimerJobQueryImpl
```
@Internal
public interface Query<T extends Query<?,?>,U>
```
Describes basic methods for querying.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`T`	`asc()`	Order the results ascending on the given property as defined in this class (needs to come after a call to one of the orderByXxxx methods).
`long`	`count()`	Executes the query and returns the number of results
`T`	`desc()`	Order the results descending on the given property as defined in this class (needs to come after a call to one of the orderByXxxx methods).
`java.util.List<U>`	`list()`	Executes the query and get a list of entities as the result.
`java.util.List<U>`	`listPage(int firstResult, int maxResults)`	Executes the query and get a list of entities as the result.
`T`	`orderBy(QueryProperty property)`	Order the results by the given `QueryProperty` (needs to be followed by `asc()` or `desc()`)
`U`	`singleResult()`	Executes the query and returns the resulting entity or null if no entity matches the query criteria.

- Method Detail
  - asc
```
T asc()
```
    Order the results ascending on the given property as defined in this class (needs to come after a call to one of the orderByXxxx methods).
  - desc
```
T desc()
```
    Order the results descending on the given property as defined in this class (needs to come after a call to one of the orderByXxxx methods).
  - orderBy
```
T orderBy(QueryProperty property)
```
    Order the results by the given QueryProperty (needs to be followed by asc() or desc())
    
    Parameters:
    
    property - the QueryProperty to be used to order the results
    
    Returns:
    
    itself
  - count
```
long count()
```
    Executes the query and returns the number of results
  - singleResult
```
U singleResult()
```
    Executes the query and returns the resulting entity or null if no entity matches the query criteria.
    
    Throws:
    
    ActivitiException - when the query results in more than one entities.
  - list
```
java.util.List<U> list()
```
    Executes the query and get a list of entities as the result.
  - listPage
```
java.util.List<U> listPage(int firstResult,
                           int maxResults)
```
    Executes the query and get a list of entities as the result.