Duration (Hibernate Javadocs)

java.lang.Object
- org.hibernate.sql.ast.tree.expression.Duration

All Implemented Interfaces:

DomainResultProducer, SqlSelectionProducer, Expression, SqlAstNode
```
public class Duration
extends Object
implements Expression, DomainResultProducer
```
A duration expressed in terms of a given temporal unit. Represents a conversion of a scalar value to a Duration, by providing a duration unit.

See Also:

which does the opposite

Constructor Summary

Constructors
Constructor Description

Duration(Expression magnitude, TemporalUnit unit, BasicValuedMapping type)

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`void`	`accept(SqlAstWalker walker)`
`void`	`applySqlSelections(DomainResultCreationState creationState)`	Used when this producer is a selection in a sub-query.
`DomainResult`	`createDomainResult(String resultVariable, DomainResultCreationState creationState)`	Produce the domain query
`BasicValuedMapping`	`getExpressionType()`	The type for this expression
`Expression`	`getMagnitude()`
`TemporalUnit`	`getUnit()`

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface org.hibernate.sql.ast.tree.expression.Expression
createDomainResultSqlSelection, createDomainResultSqlSelection, createSqlSelection, createSqlSelection, getColumnReference

- Constructor Detail
  - Duration
```
public Duration(Expression magnitude,
                TemporalUnit unit,
                BasicValuedMapping type)
```
- Method Detail
  - getUnit
```
public TemporalUnit getUnit()
```
  - getMagnitude
```
public Expression getMagnitude()
```
  - accept
```
public void accept(SqlAstWalker walker)
```
    Specified by:
    
    accept in interface SqlAstNode
  - createDomainResult
```
public DomainResult createDomainResult(String resultVariable,
                                       DomainResultCreationState creationState)
```
    Description copied from interface: DomainResultProducer
    
    Produce the domain query
    
    Specified by:
    
    createDomainResult in interface DomainResultProducer
  - applySqlSelections
```
public void applySqlSelections(DomainResultCreationState creationState)
```
    Description copied from interface: DomainResultProducer
    
    Used when this producer is a selection in a sub-query. The DomainResult is only needed for root query of a SELECT statement. This default impl assumes this producer is a true (Sql)Expression
    
    Specified by:
    
    applySqlSelections in interface DomainResultProducer
  - getExpressionType
```
public BasicValuedMapping getExpressionType()
```
    Description copied from interface: Expression
    
    The type for this expression
    
    Specified by:
    
    getExpressionType in interface Expression