Package io.jmix.reports.impl.repository

Class RepositoryUtil.ComparatorBuilder<T>

java.lang.Object

io.jmix.reports.impl.repository.RepositoryUtil.ComparatorBuilder<T>

Enclosing class:

RepositoryUtil

public class RepositoryUtil.ComparatorBuilder<T>
extends Object

Method Summary

Modifier and Type	Method	Description
Comparator<T>	build(Sort sort)	Build comparator.
<U extends Comparable<? super U>> RepositoryUtil.ComparatorBuilder<T>	customProperty(String sortKey, Function<T,? extends U> valueExtractor)	Register additional custom comparator for a sort key which isn't a property of the entity, e.g.

Methods inherited from class java.lang.Object

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

Method Details

build

public Comparator<T> build(Sort sort)

Build comparator. Checks that sort keys are valid.

Parameters:

sort - sort clauses

Returns:

prepared comparator

customProperty

public <U extends Comparable<? super U>>
RepositoryUtil.ComparatorBuilder<T> customProperty(String sortKey,
 Function<T,? extends U> valueExtractor)

Register additional custom comparator for a sort key which isn't a property of the entity, e.g. for a calculatable property. A value extractor function must be provided. Extracted values are cached, to avoid repeated computations of the same value.

Type Parameters:

U - type of comparable value

Parameters:

sortKey - sort key, expected to be used by repository clients

valueExtractor - function to extract comparable value from the entity, similar to Comparator.comparing(Function)

Returns:

builder object