Package io.appform.hope.core.exceptions.errorstrategy

Interface ErrorHandlingStrategy

All Known Implementing Classes:

DefaultErrorHandlingStrategy, InjectValueErrorHandlingStrategy

public interface ErrorHandlingStrategy

This class is called in error situations. This lets' users configure the behaviour in scenarios where these scenarios appear.

Method Summary

Modifier and Type	Method	Description
<T> T	handleIllegalEval(String message, T defaultValue)	This handler is called in case there is some bug in the evaluation.
<T> T	handleMissingValue(String path, T defaultValue)	This handler is invoked when a value cannot be resolved from a path.
<T> T	handleTypeMismatch(String path, String expected, String actual, T defaultValue)	This handler is invoked when there is type mismatch between value at path and that present in json.
default void	paramValidationFailure(String checkFailureMessage)	This handler is invoked when param evaluation in a HopeFunction evaluation fails

Method Detail

handleMissingValue

<T> T handleMissingValue(String path,
                         T defaultValue)

This handler is invoked when a value cannot be resolved from a path. This happens when value is not present or null.

Type Parameters:

T - Type of default Value

Parameters:

path - Path for which value was not found

defaultValue - Default value to be returned if present

Returns:

defaultValue or exception depending on implementation

handleTypeMismatch

<T> T handleTypeMismatch(String path,
                         String expected,
                         String actual,
                         T defaultValue)

This handler is invoked when there is type mismatch between value at path and that present in json.

Type Parameters:

T - Type of defaultValue

Parameters:

path - Path for which value mismatch was detected

expected - Expected type

actual - Type found in provided json

defaultValue - Default value to be returned in case of mismatch

Returns:

defaultValue or throws exception depending on implementation

paramValidationFailure

default void paramValidationFailure(String checkFailureMessage)

This handler is invoked when param evaluation in a HopeFunction evaluation fails

Parameters:

checkFailureMessage - Message describing the failure

handleIllegalEval

<T> T handleIllegalEval(String message,
                        T defaultValue)

This handler is called in case there is some bug in the evaluation. This should never be raised faced in production. In case this happens it is a bug that should be reported.

Type Parameters:

T - Type of defaultValue

Parameters:

message - Custom message provided at assertion site

defaultValue - Default value to be returned if this state is faced

Returns:

defaultValue or throws exception depending on implementation