Package org.springframework.validation

Interface DataBinder.ValueResolver

All Known Implementing Classes:
ServletRequestDataBinder.ServletRequestValueResolver
Enclosing class:
DataBinder
public static interface DataBinder.ValueResolver
Strategy for constructor binding to look up the values to bind to a given constructor parameter.

  • Method Summary

    Modifier and Type
    Method
    Description
    Set<String>
    getNames()
    Return the names of all property values.
    Object
    resolveValue(String name, Class<?> type)
    Resolve the value for the given name and target parameter type.

  • Method Details

    • resolveValue

      @Nullable Object resolveValue(String name, Class<?> type)
      Resolve the value for the given name and target parameter type.
      Parameters:
      name - the name to use for the lookup, possibly a nested path for constructor parameters on nested objects
      type - the target type, based on the constructor parameter type
      Returns:
      the resolved value, possibly null if none found

    • getNames

      Set<String> getNames()
      Return the names of all property values.

      Useful for proactive checks whether there are property values nested further below the path for a constructor arg. If not then the constructor arg can be considered missing and not to be instantiated.

      Since:
      6.1.2