Query (Flowable - Engine Common API 6.8.1 API)

```
public interface Query<T extends Query<?,?>,U>
```
Describes basic methods for querying.

Author:

Frederik Heremans

Nested Class Summary

Nested Classes
Modifier and Type Interface Description

static class Query.NullHandlingOnOrder

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).
`List<U>`	`list()`	Executes the query and get a list of entities as the result.
`List<U>`	`listPage(int firstResult, int maxResults)`	Executes the query and get a list of entities as the result.
`T`	`orderBy(QueryProperty property)`
`T`	`orderBy(QueryProperty property, Query.NullHandlingOnOrder nullHandlingOnOrder)`
`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)
```
  - orderBy
```
T orderBy(QueryProperty property,
          Query.NullHandlingOnOrder nullHandlingOnOrder)
```
  - 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:
    
    FlowableException - when the query results in more than one entities.
  - list
```
List<U> list()
```
    Executes the query and get a list of entities as the result.
  - listPage
```
List<U> listPage(int firstResult,
                 int maxResults)
```
    Executes the query and get a list of entities as the result.