Package io.micronaut.core.value

Interface PropertyResolver

All Superinterfaces:
ValueResolver<String>
All Known Subinterfaces:
ApplicationContext, ConditionContext<T>, ConfigurableApplicationContext, Environment
All Known Implementing Classes:
DefaultApplicationContext, DefaultEnvironment, MapPropertyResolver, PropertySourcePropertyResolver
public interface PropertyResolver extends ValueResolver<String>
A property resolver is capable of resolving properties from an underlying property source.
Since:
1.0
Author:
Graeme Rocher

  • Method Details

    • containsProperty

      boolean containsProperty(@NonNull @NonNull String name)

      Whether the given property is contained within this resolver.

      Note that this method will return false for nested properties. In other words given a key of foo.bar this method will return false for: resolver.containsProperty("foo")

      To check for nested properties using containsProperties(String) instead.

      Parameters:
      name - The name of the property
      Returns:
      True if it is

    • containsProperties

      boolean containsProperties(@NonNull @NonNull String name)
      Whether the given property or any nested properties exist for the key given key within this resolver.
      Parameters:
      name - The name of the property
      Returns:
      True if it is

    • getProperty

      @NonNull <T> @NonNull Optional<T> getProperty(@NonNull @NonNull String name, @NonNull @NonNull ArgumentConversionContext<T> conversionContext)

      Resolve the given property for the given name, type and generic type arguments.

      Implementers can choose to implement more intelligent type conversion by analyzing the typeArgument.

      Type Parameters:
      T - The concrete type
      Parameters:
      name - The name
      conversionContext - The conversion context
      Returns:
      An optional containing the property value if it exists

    • getPropertyEntries

      @NonNull default @NonNull Collection<String> getPropertyEntries(@NonNull @NonNull String name)
      Returns a collection of properties entries under the given key. For example given the following keys: 
      
 datasource.default.url=localhost
 datasource.another.url=someother
      Calling getPropertyEntries(String) with a value of datasource will result in a collection containing default and other.
      Parameters:
      name - The name to resolve
      Returns:
      The property entries.

    • getProperty

      @NonNull default <T> @NonNull Optional<T> getProperty(@NonNull @NonNull String name, @NonNull @NonNull Argument<T> argument)

      Resolve the given property for the given name, type and generic type arguments.

      Implementers can choose to implement more intelligent type conversion by analyzing the typeArgument.

      Type Parameters:
      T - The concrete type
      Parameters:
      name - The name
      argument - The required type
      Returns:
      An optional containing the property value if it exists

    • getProperties

      @NonNull default @NonNull Map<String,Object> getProperties(@NonNull @NonNull String name)
      Return all the properties under the given key.
      Parameters:
      name - The name
      Returns:
      The properties

    • getProperties

      @NonNull default @NonNull Map<String,Object> getProperties(@Nullable @Nullable String name, @Nullable @Nullable StringConvention keyFormat)
      Return all the properties under the given key. By default, Micronaut stores keys in keb-case, such that normalized lookups are more efficient. You can obtain the raw key values by passing in StringConvention.RAW.
      Parameters:
      name - The name
      keyFormat - The key format to use for the keys. Default is kebab-case.
      Returns:
      The properties

    • getProperty

      @NonNull default <T> @NonNull Optional<T> getProperty(@NonNull @NonNull String name, @NonNull @NonNull Class<T> requiredType, @NonNull @NonNull ConversionContext context)

      Resolve the given property for the given name, type and generic type arguments.

      Implementers can choose to implement more intelligent type conversion by analyzing the typeArgument.

      Type Parameters:
      T - The concrete type
      Parameters:
      name - The name
      requiredType - The required type
      context - The ConversionContext to apply to any conversion
      Returns:
      An optional containing the property value if it exists

    • get

      @NonNull default <T> @NonNull Optional<T> get(@NonNull @NonNull String name, @NonNull @NonNull ArgumentConversionContext<T> conversionContext)
      Description copied from interface: ValueResolver
      Resolve the given property for the given name.
      Specified by:
      get in interface ValueResolver<String>
      Type Parameters:
      T - The concrete type
      Parameters:
      name - The name
      conversionContext - The conversion context
      Returns:
      An optional containing the property value if it exists and is able to be converted

    • getProperty

      @NonNull default <T> @NonNull Optional<T> getProperty(@NonNull @NonNull String name, @NonNull @NonNull Class<T> requiredType)
      Resolve the given property for the given name.
      Type Parameters:
      T - The concrete type
      Parameters:
      name - The name
      requiredType - The required type
      Returns:
      An optional containing the property value if it exists

    • getProperty

      @Nullable default <T> T getProperty(@NonNull @NonNull String name, @NonNull @NonNull Class<T> requiredType, @Nullable T defaultValue)
      Resolve the given property for the given name.
      Type Parameters:
      T - The concrete type
      Parameters:
      name - The name
      requiredType - The required type
      defaultValue - The default value
      Returns:
      An optional containing the property value if it exists

    • getRequiredProperty

      @NonNull default <T> T getRequiredProperty(@NonNull @NonNull String name, @NonNull @NonNull Class<T> requiredType) throws PropertyNotFoundException
      Resolve the given property for the given name.
      Type Parameters:
      T - The concrete type
      Parameters:
      name - The name of the property
      requiredType - The required type
      Returns:
      The value of the property
      Throws:
      PropertyNotFoundException - exception when property does not exist

    • nameOf

      static String nameOf(String... path)
      Builds a property name for the given property path.
      Parameters:
      path - The path
      Returns:
      The property name

    • getPropertyPathMatches

      @NonNull @NonNull Collection<List<String>> getPropertyPathMatches(@NonNull @NonNull String pathPattern)
      Will return for a given pattern such as foo.*.bar.* and array of arrays containing the variable names that match the pattern.
      Parameters:
      pathPattern - The path pattern
      Returns:
      An array of arrays.
      Since:
      4.0.0