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MoreTypes.kt
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MoreTypes.kt
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/*
* Copyright 2021 Google LLC
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http:https://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.google.android.fhir
import java.util.Calendar
import java.util.Date
import java.util.Locale
import org.hl7.fhir.r4.model.Coding
import org.hl7.fhir.r4.model.Quantity
import org.hl7.fhir.r4.model.StringType
import org.hl7.fhir.r4.model.Type
/**
* Returns whether two instances of the [Type] class are equal.
*
* Note this is not an operator because it is not possible to overload the equality operator as an
* extension.
*/
fun equals(a: Type, b: Type): Boolean {
if (a::class != b::class) return false
if (a === b) return true
if (a.isPrimitive) return a.primitiveValue() == b.primitiveValue()
// Codes with the same system and code values are considered equal even if they have different
// display values.
if (a is Coding && b is Coding) return a.system == b.system && a.code == b.code
throw NotImplementedError("Comparison for type ${a::class.java} not supported.")
}
operator fun Type.compareTo(value: Type): Int {
if (!this.fhirType().equals(value.fhirType())) {
throw IllegalArgumentException(
"Cannot compare different data types: ${this.fhirType()} and ${value.fhirType()}"
)
}
when {
this.fhirType().equals("integer") -> {
return this.primitiveValue().toInt().compareTo(value.primitiveValue().toInt())
}
this.fhirType().equals("decimal") -> {
return this.primitiveValue().toBigDecimal().compareTo(value.primitiveValue().toBigDecimal())
}
this.fhirType().equals("date") -> {
return clearTimeFromDateValue(this.dateTimeValue().value)
.compareTo(clearTimeFromDateValue(value.dateTimeValue().value))
}
this.fhirType().equals("dateTime") -> {
return this.dateTimeValue().value.compareTo(value.dateTimeValue().value)
}
this.fhirType().equals("Quantity") -> {
val quantity = UnitConverter.getCanonicalForm(UcumValue((this as Quantity).code, this.value))
val anotherQuantity =
UnitConverter.getCanonicalForm(UcumValue((value as Quantity).code, value.value))
if (quantity.code != anotherQuantity.code) {
throw IllegalArgumentException(
"Cannot compare different quantity codes: ${quantity.code} and ${anotherQuantity.code}"
)
}
return quantity.value.compareTo(anotherQuantity.value)
}
else -> {
throw NotImplementedError()
}
}
return 0
}
private fun clearTimeFromDateValue(dateValue: Date): Date {
val calendarValue = Calendar.getInstance()
calendarValue.time = dateValue
calendarValue.set(Calendar.HOUR_OF_DAY, 0)
calendarValue.set(Calendar.MINUTE, 0)
calendarValue.set(Calendar.SECOND, 0)
calendarValue.set(Calendar.MILLISECOND, 0)
return calendarValue.time
}
fun StringType.getLocalizedText(lang: String = Locale.getDefault().toLanguageTag()): String? {
return getTranslation(lang) ?: getTranslation(lang.split("-").firstOrNull()) ?: value
}