ExtractUnit (Hibernate Javadocs)

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

All Implemented Interfaces:

SqlSelectionProducer, Expression, SqlAstNode
```
public class ExtractUnit
extends Object
implements Expression, SqlAstNode
```
A TemporalUnit passed as an argument to the ExtractFunction. These are different to DurationUnits because of how the TemporalUnit.WEEK field is handled on some platforms.

Constructor Summary

Constructors
Constructor Description

ExtractUnit(TemporalUnit unit, BasicValuedMapping type)

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`void`	`accept(SqlAstWalker sqlTreeWalker)`
`BasicValuedMapping`	`getExpressionType()`	The type for this expression
`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

ExtractUnit

public ExtractUnit(TemporalUnit unit,
                   BasicValuedMapping type)

Method Detail
- getUnit
```
public TemporalUnit getUnit()
```
- getExpressionType
```
public BasicValuedMapping getExpressionType()
```
  Description copied from interface: Expression
  
  The type for this expression
  
  Specified by:
  
  getExpressionType in interface Expression
- accept
```
public void accept(SqlAstWalker sqlTreeWalker)
```
  Specified by:
  
  accept in interface SqlAstNode