Package cz.encircled.joiner.core

Class DefaultPredicateAliasResolver

java.lang.Object

cz.encircled.joiner.core.DefaultPredicateAliasResolver

All Implemented Interfaces:

PredicateAliasResolver

public class DefaultPredicateAliasResolver
extends Object
implements PredicateAliasResolver

Author:

Vlad on 10-Feb-17.

See Also:

PredicateAliasResolver

Constructor Summary

Constructors

Constructor	Description
DefaultPredicateAliasResolver(Joiner joiner)

Method Summary

Modifier and Type	Method	Description
com.querydsl.core.types.Predicate	resolveOperation(com.querydsl.core.types.Operation<?> operation, List<JoinDescription> joins, Set<com.querydsl.core.types.Path<?>> usedAliases)	Resolves all correct paths used in specified operation
<T> com.querydsl.core.types.Path<T>	resolvePath(com.querydsl.core.types.Path<T> path, Map<AnnotatedElement,List<JoinDescription>> classToJoin, Set<com.querydsl.core.types.Path<?>> usedAliases)	If alias from path is not present in usedAliases, try to find it in joins.
com.querydsl.core.types.Predicate	resolvePredicate(com.querydsl.core.types.Predicate predicate, List<JoinDescription> joins, Set<com.querydsl.core.types.Path<?>> usedAliases)	Resolves all correct paths used in specified predicate

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

DefaultPredicateAliasResolver

public DefaultPredicateAliasResolver(Joiner joiner)

Method Detail

resolvePredicate

public com.querydsl.core.types.Predicate resolvePredicate(com.querydsl.core.types.Predicate predicate,
                                                          List<JoinDescription> joins,
                                                          Set<com.querydsl.core.types.Path<?>> usedAliases)

Description copied from interface: PredicateAliasResolver

Resolves all correct paths used in specified predicate

Specified by:

resolvePredicate in interface PredicateAliasResolver

Parameters:

predicate - original predicate

joins - all query joins

usedAliases - paths that are present in joins

Returns:

rebuilt predicate

See Also:

PredicateAliasResolver.resolvePath(Path, Map, Set)

resolveOperation

public com.querydsl.core.types.Predicate resolveOperation(com.querydsl.core.types.Operation<?> operation,
                                                          List<JoinDescription> joins,
                                                          Set<com.querydsl.core.types.Path<?>> usedAliases)

Description copied from interface: PredicateAliasResolver

Resolves all correct paths used in specified operation

Specified by:

resolveOperation in interface PredicateAliasResolver

Parameters:

operation - original operation

joins - all query joins

usedAliases - paths that are present in joins

Returns:

rebuilt predicate

See Also:

PredicateAliasResolver.resolvePath(Path, Map, Set)

resolvePath

public <T> com.querydsl.core.types.Path<T> resolvePath(com.querydsl.core.types.Path<T> path,
                                                       Map<AnnotatedElement,List<JoinDescription>> classToJoin,
                                                       Set<com.querydsl.core.types.Path<?>> usedAliases)

Description copied from interface: PredicateAliasResolver

If alias from path is not present in usedAliases, try to find it in joins. If unambiguous alias is found, return rebuilt Path with corresponding alias.

It other words, it allows to use QStatus.status.some... instead of J#path(QStatusParent.parent, QStatus.status (when target path is unambiguous, i.e. exactly one join with java type Status is present)

Specified by:

resolvePath in interface PredicateAliasResolver

Type Parameters:

T - any

Parameters:

path - original path

classToJoin - java type to present joins

usedAliases - paths that are present in joins

Returns:

rebuilt or original path