Package net.shibboleth.shared.spring.expression

Class SpringExpressionPredicate<T>

java.lang.Object
net.shibboleth.shared.spring.expression.AbstractSpringExpressionEvaluator
net.shibboleth.shared.spring.expression.SpringExpressionPredicate<T>
Type Parameters:
T - type of input
All Implemented Interfaces:
Predicate<T>
public class SpringExpressionPredicate<T> extends AbstractSpringExpressionEvaluator implements Predicate<T>
Predicate whose condition is defined by an Spring EL expression.
Since:
5.4.0

  • Field Details

    • log

      @Nonnull private final org.slf4j.Logger log
      Class logger.

    • inputTypeClass

      @Nullable private Class<T> inputTypeClass
      Input type.

  • Constructor Details

    • SpringExpressionPredicate

      public SpringExpressionPredicate(@Nonnull @NotEmpty @ParameterName(name="expression") String expression)
      Constructor.
      Parameters:
      expression - the expression to evaluate

  • Method Details

    • getInputType

      @Nullable public Class<T> getInputType()
      Get the input type to be enforced.
      Returns:
      input type
      Since:
      6.1.0

    • setInputType

      public void setInputType(@Nullable Class<T> type)
      Set the input type to be enforced.
      Parameters:
      type - input type
      Since:
      6.1.0

    • setReturnOnError

      public void setReturnOnError(boolean flag)
      Set value to return if an error occurs (default is false).
      Parameters:
      flag - flag to set

    • test

      public boolean test(@Nullable T input)
      Specified by:
      test in interface Predicate<T>

    • returnError

      private boolean returnError() throws ClassCastException
      Helper function to sanity check return-on-error object.
      Returns:
      a boolean-valued error fallback
      Throws:
      ClassCastException - if the installed fallback is null or non-Boolean

    • prepareContext

      protected void prepareContext(@Nonnull EvaluationContext context, @Nullable Object... input)
      Pre-process the script context before execution.
      Specified by:
      prepareContext in class AbstractSpringExpressionEvaluator
      Parameters:
      context - the expression context
      input - the inputs