Predicate (Hibernate Javadocs)

All Superinterfaces:

DomainResultProducer<Boolean>, Expression, SqlAstNode, SqlSelectionProducer

All Known Implementing Classes:

AbstractPredicate, BetweenPredicate, BooleanExpressionPredicate, ComparisonPredicate, ExistsPredicate, FilterPredicate, FilterPredicate.FilterFragmentPredicate, GroupedPredicate, InArrayPredicate, InListPredicate, InSubQueryPredicate, Junction, LikePredicate, NegatedPredicate, NullnessPredicate, SelfRenderingPredicate, SqlFragmentPredicate, ThruthnessPredicate
```
public interface Predicate
extends Expression, DomainResultProducer<Boolean>
```
Models a predicate in the SQL AST

Method Summary

All Methods Static Methods Instance Methods Abstract Methods Default Methods
Modifier and Type	Method	Description
`default void`	`applySqlSelections(DomainResultCreationState creationState)`	Used when this producer is a selection in a sub-query.
`static Predicate`	`combinePredicates(Predicate p1, Predicate p2)`	Short-cut for `SqlAstTreeHelper.combinePredicates(org.hibernate.sql.ast.tree.predicate.Predicate, org.hibernate.sql.ast.tree.predicate.Predicate)`
`default DomainResult<Boolean>`	`createDomainResult(String resultVariable, DomainResultCreationState creationState)`	Produce the domain query
`boolean`	`isEmpty()`

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

Methods inherited from interface org.hibernate.sql.ast.tree.SqlAstNode
accept

- Method Detail
  - combinePredicates
```
static Predicate combinePredicates(Predicate p1,
                                   Predicate p2)
```
    Short-cut for SqlAstTreeHelper.combinePredicates(org.hibernate.sql.ast.tree.predicate.Predicate, org.hibernate.sql.ast.tree.predicate.Predicate)
  - isEmpty
```
boolean isEmpty()
```
  - createDomainResult
```
default DomainResult<Boolean> createDomainResult(String resultVariable,
                                                 DomainResultCreationState creationState)
```
    Description copied from interface: DomainResultProducer
    
    Produce the domain query
    
    Specified by:
    
    createDomainResult in interface DomainResultProducer<Boolean>
  - applySqlSelections
```
default 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<Boolean>