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DATACMNS-1322 - Add support for Kotlin's copy(…) method.

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We now support updating of immutable Kotlin data objects by creating new copies through Kotlin's copy method that is generated along with data classes and immutable properties.

data class DataClassKt(val id: String) {
}

data class ExtendedDataClassKt(val id: String, val name: String) {
}
This commit is contained in:
Mark Paluch
2018-05-22 16:08:49 +02:00
committed by Oliver Gierke
parent 80db17d6ba
commit 79119000bb
8 changed files with 559 additions and 97 deletions
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38
src/test/java/org/springframework/data/mapping/model/PersistentPropertyAccessorTests.java
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@@ -84,6 +84,34 @@ public class PersistentPropertyAccessorTests {
assertThat(accessor.getProperty(property)).isEqualTo("value");
}
@Test // DATACMNS-1322
public void shouldSetKotlinDataClassProperty() {
DataClassKt bean = new DataClassKt("foo");
PersistentPropertyAccessor accessor = propertyAccessorFunction.apply(bean);
SamplePersistentProperty property = getProperty(bean, "id");
accessor.setProperty(property, "value");
assertThat(accessor.getBean()).hasFieldOrPropertyWithValue("id", "value");
assertThat(accessor.getBean()).isNotSameAs(bean);
assertThat(accessor.getProperty(property)).isEqualTo("value");
}
@Test // DATACMNS-1322
public void shouldSetExtendedKotlinDataClassProperty() {
ExtendedDataClassKt bean = new ExtendedDataClassKt("foo", "bar");
PersistentPropertyAccessor accessor = propertyAccessorFunction.apply(bean);
SamplePersistentProperty property = getProperty(bean, "id");
accessor.setProperty(property, "value");
assertThat(accessor.getBean()).hasFieldOrPropertyWithValue("id", "value");
assertThat(accessor.getBean()).isNotSameAs(bean);
assertThat(accessor.getProperty(property)).isEqualTo("value");
}
@Test // DATACMNS-1322
public void shouldWitherProperty() {
@@ -108,6 +136,16 @@ public class PersistentPropertyAccessorTests {
assertThatThrownBy(() -> accessor.setProperty(property, "value")).isInstanceOf(UnsupportedOperationException.class);
}
@Test // DATACMNS-1322
public void shouldRejectImmutableKotlinClassPropertyUpdate() {
ValueClassKt bean = new ValueClassKt("foo");
PersistentPropertyAccessor accessor = propertyAccessorFunction.apply(bean);
SamplePersistentProperty property = getProperty(bean, "immutable");
assertThatThrownBy(() -> accessor.setProperty(property, "value")).isInstanceOf(UnsupportedOperationException.class);
}
private static SamplePersistentProperty getProperty(Object bean, String propertyName) {
return mappingContext.getRequiredPersistentEntity(bean.getClass()).getRequiredPersistentProperty(propertyName);