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Code Issues Packages Projects Releases Wiki Activity

Search by short name #11

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This commit is contained in:
Sad Ellie 2022-12-31 14:24:49 +04:00
parent d715bc61fa
commit f7b625df50
2 changed files with 26 additions and 13 deletions
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33
app/src/main/java/com/sadellie/unitto/data/units/AbstractUnit.kt
View File

@ -32,8 +32,10 @@ import java.math.BigDecimal
* basicUnit. For example, in [UnitGroup.LENGTH] basic unit is an attometer (1), then nanometer is
* 1.0E+9 times bigger than that. This number (1.0E+9) is a basic unit for nanometer
* @property group [UnitGroup] of this unit
* @property renderedName Used a cache. Stores long name string for this specific device. Need for
* search functionality
* @property renderedName Used as cache. Stores long name string for this specific device. Need for
* search functionality.
* @property renderedShortName Used as cache. Stores short name string for this specific device. Need for
* search functionality.
* @property isFavorite Whether this unit is favorite.
* @property isEnabled Whether we need to show this unit or not
* @property pairedUnit Latest paired unit on the right
@ -46,6 +48,7 @@ abstract class AbstractUnit(
var basicUnit: BigDecimal,
val group: UnitGroup,
var renderedName: String = String(),
var renderedShortName: String = String(),
var isFavorite: Boolean = false,
var isEnabled: Boolean = true,
var pairedUnit: String? = null,
@ -79,21 +82,31 @@ fun Sequence<AbstractUnit>.sortByLev(stringA: String): Sequence<AbstractUnit> {
// List of pair: Unit and it's levDist
val unitsWithDist = mutableListOf<Pair<AbstractUnit, Int>>()
this.forEach { unit ->
val unitName: String = unit.renderedName.lowercase()
val unitShortName: String = unit.renderedShortName.lowercase()
/**
* There is a chance that we search for unit with a specific short name. Such cases are
* should be higher in the list. Best possible match.
*/
if (stringToCompare == unitShortName) {
unitsWithDist.add(Pair(unit, 0))
return@forEach
}
val unitFullName: String = unit.renderedName.lowercase()
/**
* There is chance that unit name doesn't need any edits (contains part of the query)
* So computing levDist is a waste of resources
*/
when {
// It's the best possible match if it start with
unitName.startsWith(stringToCompare) -> {
unitsWithDist.add(Pair(unit, 0))
// It's the second best possible match if it start with
unitFullName.startsWith(stringToCompare) -> {
unitsWithDist.add(Pair(unit, 1))
return@forEach
}
// It's a little bit worse when it just contains part of the query
unitName.contains(stringToCompare) -> {
unitsWithDist.add(Pair(unit, 1))
unitFullName.contains(stringToCompare) -> {
unitsWithDist.add(Pair(unit, 2))
return@forEach
}
}
@ -111,8 +124,8 @@ fun Sequence<AbstractUnit>.sortByLev(stringA: String): Sequence<AbstractUnit> {
*
* With substring levDist will be 3 so unit will be included
*/
val levDist = unitName
.substring(0, minOf(stringToCompare.length, unitName.length))
val levDist = unitFullName
.substring(0, minOf(stringToCompare.length, unitFullName.length))
.lev(stringToCompare)
// Threshold

6
app/src/main/java/com/sadellie/unitto/data/units/AllUnitsRepository.kt
View File

@ -126,9 +126,8 @@ class AllUnitsRepository @Inject constructor() {
// Query is empty, i.e. we want to see all units and they need to be sorted by usage
basicFilteredUnits.sortedByDescending { it.counter }
} else {
// We are searching for a specific unit, we don't care about popularity
// We need search accuracy
basicFilteredUnits.sortByLev(searchQuery)
// We sort by popularity and Levenshtein distance (short and long name).
basicFilteredUnits.sortedByDescending { it.counter }.sortByLev(searchQuery)
}
return unitsToShow.groupBy { it.group }
@ -145,6 +144,7 @@ class AllUnitsRepository @Inject constructor() {
allUnits.forEach {
// Loading unit names so that we can search through them
it.renderedName = context.getString(it.displayName)
it.renderedShortName = context.getString(it.shortName)
val based = allBasedUnits.firstOrNull { based -> based.unitId == it.unitId }
// Loading paired units
it.pairedUnit = based?.pairedUnitId