Package com.evolveum.midpoint.repo.sqlbase.querydsl

Enum QuerydslUtils

java.lang.Object

java.lang.Enum<QuerydslUtils>

com.evolveum.midpoint.repo.sqlbase.querydsl.QuerydslUtils

All Implemented Interfaces:

Serializable, Comparable<QuerydslUtils>

public enum QuerydslUtils
extends Enum<QuerydslUtils>

Method Summary

Modifier and Type	Method	Description
static <T extends Comparable<T>> T	convertTimestampToPathType(@NotNull Object value, @NotNull com.querydsl.core.types.dsl.DateTimePath<T> path)	Tries to convert value of type type XMLGregorianCalendar to paths of Instant (most likely used), Timestamp and Long.
static <O,M> Map<O,Collection<M>>	mapOneToMany(Collection<com.querydsl.core.Tuple> rawResult, com.querydsl.core.types.Expression<O> onePath, com.querydsl.core.types.Expression<M> manyPath)	Like mapOneToMany(Collection, Expression, Expression, BiConsumer), just without any consumer for additional processing.
static <O,M> Map<O,Collection<M>>	mapOneToMany(Collection<com.querydsl.core.Tuple> rawResult, com.querydsl.core.types.Expression<O> onePath, com.querydsl.core.types.Expression<M> manyPath, @Nullable BiConsumer<O,M> manyAccumulator)	Resolves one-to-many relations between two paths from the Tuple-based result.
static com.querydsl.sql.Configuration	querydslConfiguration(SupportedDatabase databaseType)	Returns configuration for Querydsl based on the used database type.
static QuerydslUtils	valueOf(String name)	Returns the enum constant of this type with the specified name.
static QuerydslUtils[]	values()	Returns an array containing the constants of this enum type, in the order they are declared.

Methods inherited from class java.lang.Enum

clone, compareTo, equals, finalize, getDeclaringClass, hashCode, name, ordinal, toString, valueOf

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Method Detail

values

public static QuerydslUtils[] values()

Returns an array containing the constants of this enum type, in the order they are declared. This method may be used to iterate over the constants as follows:

for (QuerydslUtils c : QuerydslUtils.values())
    System.out.println(c);

Returns:

an array containing the constants of this enum type, in the order they are declared

valueOf

public static QuerydslUtils valueOf(String name)

Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. (Extraneous whitespace characters are not permitted.)

Parameters:

name - the name of the enum constant to be returned.

Returns:

the enum constant with the specified name

Throws:

IllegalArgumentException - if this enum type has no constant with the specified name

NullPointerException - if the argument is null

querydslConfiguration

public static com.querydsl.sql.Configuration querydslConfiguration(SupportedDatabase databaseType)

Returns configuration for Querydsl based on the used database type.

mapOneToMany

public static <O,M> Map<O,Collection<M>> mapOneToMany(Collection<com.querydsl.core.Tuple> rawResult,
                                                                  com.querydsl.core.types.Expression<O> onePath,
                                                                  com.querydsl.core.types.Expression<M> manyPath,
                                                                  @Nullable
                                                                  @Nullable BiConsumer<O,M> manyAccumulator)

Resolves one-to-many relations between two paths from the Tuple-based result. Returns map with "one" entities as keys (preserving original order) and related "many" entities as a collection in the value for each key.

Optional accumulator can call further processing on both objects for each "many" item with "one" being internalized to the actual key in the resulting map. This solves the problem when the same entity is represented by different instances. Without this it wouldn't be possible to accumulate "many" in the collection owned by "one".

Note that proper equals/hashCode must be implemented for <O> type.

Type Parameters:

O - type of "one" role

M - type of "many" role

Parameters:

rawResult - collection of tuples, unprocessed result

onePath - path expression designating "one" role of the relationship

manyPath - path expression designating "many" role of the relationship

manyAccumulator - optional, called for each row with respective "one" and "many" items (always the same "one" instance is used for the group matching one key, see details above)

Returns:

map of one->[many*] with keys in the original iterating order

mapOneToMany

public static <O,M> Map<O,Collection<M>> mapOneToMany(Collection<com.querydsl.core.Tuple> rawResult,
                                                                  com.querydsl.core.types.Expression<O> onePath,
                                                                  com.querydsl.core.types.Expression<M> manyPath)

Like mapOneToMany(Collection, Expression, Expression, BiConsumer), just without any consumer for additional processing.

convertTimestampToPathType

public static <T extends Comparable<T>> T convertTimestampToPathType(@NotNull
                                                                     @NotNull Object value,
                                                                     @NotNull
                                                                     @NotNull com.querydsl.core.types.dsl.DateTimePath<T> path)

Tries to convert value of type type XMLGregorianCalendar to paths of Instant (most likely used), Timestamp and Long.