Package io.micronaut.context.annotation

Interface Mapper.MergeStrategy

Enclosing class:

Mapper

public static interface Mapper.MergeStrategy

An interface for defining merge strategies. Merge strategies are used when the mapping has two or more arguments.

Method Summary

Modifier and Type	Method	Description
@Nullable Object	merge(@Nullable Object currentValue, @Nullable Object value, @NonNull Object valueOwner, @NonNull String propertyName, @NonNull String mappedPropertyName)	Merge a single property by returning the value to set the property to.

Method Details

merge

@Nullable
@Nullable Object merge(@Nullable
 @Nullable Object currentValue,
 @Nullable
 @Nullable Object value,
 @NonNull
 @NonNull Object valueOwner,
 @NonNull
 @NonNull String propertyName,
 @NonNull
 @NonNull String mappedPropertyName)

Merge a single property by returning the value to set the property to. The merge strategy will be called every time a property needs to be set, even for properties of the first argument.

The property that is returned from the method will be set. For example, if you do not want to update the property, return the currentValue.

Parameters:

currentValue - The currently specified value

value - The newly supplied value

valueOwner - The owner of the new value

propertyName - The name of the property to merge

mappedPropertyName - The name of the property from the owner

Returns:

The new value to set