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[New] Added SearchResult.toMapOf*

This commit is contained in:
Robert von Burg 2019-10-02 11:27:23 +02:00
parent 64c32c7344
commit ff434cb285
1 changed files with 99 additions and 0 deletions
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99
li.strolch.agent/src/main/java/li/strolch/search/SearchResult.java
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@ -10,6 +10,9 @@ import java.util.function.Supplier;
import java.util.stream.Collectors;
import java.util.stream.Stream;
import li.strolch.utils.collections.MapOfLists;
import li.strolch.utils.collections.MapOfMaps;
import li.strolch.utils.collections.MapOfSets;
import li.strolch.utils.collections.Paging;
/**
@ -119,6 +122,102 @@ public class SearchResult<T> {
return this.stream.collect(Collectors.toMap(keyMapper, valueMapper));
}
/**
* Collects this stream to a {@link MapOfSets}, using the given key mapper. The value is returned as is
*
* @param keyMapper
* function to get the key of the element
*
* @return a map of this stream
*/
public <U> MapOfSets<U, T> toMapOfSets(Function<T, U> keyMapper) {
return this.stream.collect(MapOfSets::new, //
(map, e) -> map.addElement(keyMapper.apply(e), e), //
MapOfSets::addAll);
}
/**
* Collects this stream to a {@link MapOfSets}, using the given key mapper
*
* @param keyMapper
* function to get the key of the element
* @param valueMapper
* function to get the value of the element
*
* @return a map of this stream
*/
public <U, V> MapOfSets<U, V> toMapOfSets(Function<T, U> keyMapper, Function<T, V> valueMapper) {
return this.stream.collect(MapOfSets::new, //
(map, e) -> map.addElement(keyMapper.apply(e), valueMapper.apply(e)), //
MapOfSets::addAll);
}
/**
* Collects this stream to a {@link MapOfLists}, using the given key mapper. The value is returned as is
*
* @param keyMapper
* function to get the key of the element
*
* @return a map of this stream
*/
public <U> MapOfLists<U, T> toMapOfLists(Function<T, U> keyMapper) {
return this.stream.collect(MapOfLists::new, //
(map, e) -> map.addElement(keyMapper.apply(e), e), //
MapOfLists::addAll);
}
/**
* Collects this stream to a {@link MapOfLists}, using the given key mapper
*
* @param keyMapper
* function to get the key of the element
* @param valueMapper
* function to get the value of the element
*
* @return a map of this stream
*/
public <U, V> MapOfLists<U, V> toMapOfLists(Function<T, U> keyMapper, Function<T, V> valueMapper) {
return this.stream.collect(MapOfLists::new, //
(map, e) -> map.addElement(keyMapper.apply(e), valueMapper.apply(e)), //
MapOfLists::addAll);
}
/**
* Collects this stream to a {@link MapOfMaps}, using the given key mapper and sub key mapper. The value is returned
* as is
*
* @param keyMapper
* function to get the key of the element
* @param subKeyMapper
* function to get the sub key of the element
*
* @return a map of this stream
*/
public <U, V> MapOfMaps<U, V, T> toMapOfMaps(Function<T, U> keyMapper, Function<T, V> subKeyMapper) {
return this.stream.collect(MapOfMaps::new, //
(map, e) -> map.addElement(keyMapper.apply(e), subKeyMapper.apply(e), e), //
MapOfMaps::putAll);
}
/**
* Collects this stream to a {@link MapOfLists}, using the given key mapper
*
* @param keyMapper
* function to get the key of the element
* @param subKeyMapper
* function to get the sub key of the element
* @param valueMapper
* function to get the value of the element
*
* @return a map of this stream
*/
public <R, U, V> MapOfMaps<U, V, R> toMapOfMaps(Function<T, U> keyMapper, Function<T, V> subKeyMapper,
Function<T, R> valueMapper) {
return this.stream.collect(MapOfMaps::new, //
(map, e) -> map.addElement(keyMapper.apply(e), subKeyMapper.apply(e), valueMapper.apply(e)), //
MapOfMaps::putAll);
}
/**
* Returns a {@link Paging} element to use this object in paged results
*