ru.vyarus.guicey.gsp.app.rest.support

Class DirectTemplateExceptionMapper

java.lang.Object

ru.vyarus.guicey.gsp.app.rest.support.DirectTemplateExceptionMapper

All Implemented Interfaces:

javax.ws.rs.ext.ExceptionMapper<javax.ws.rs.NotFoundException>, org.glassfish.jersey.spi.ExtendedExceptionMapper<javax.ws.rs.NotFoundException>

@Provider
public class DirectTemplateExceptionMapper
extends java.lang.Object
implements org.glassfish.jersey.spi.ExtendedExceptionMapper<javax.ws.rs.NotFoundException>

NotFoundException thrown by jersey when matching rest path not found. Exception mapper detects it and if it is template call tries to render template directly instead.

Handler is applied to all rest, but as its an extended mapper, it will not influence normal rest calls.

NOTE: application may declare different exception mapper for NotFoundException and so it may override this mapper. It is highly unlikely, but still could happen.

Another drawback is template rendering errors will be unreachable for default dropwizard exception mapper (IllegalStateExceptionMapper which logs all rest exceptions. But this is compensated by direct exception error logging.

Since:

06.12.2019

Constructor Summary

Constructors

Constructor and Description
DirectTemplateExceptionMapper()

Method Summary

Modifier and Type	Method and Description
protected static boolean	canHandle(org.glassfish.jersey.server.monitoring.RequestEvent event) Exception event first will be catched by listener and it must not handle it initially.
boolean	isMappable(javax.ws.rs.NotFoundException exception)
javax.ws.rs.core.Response	toResponse(javax.ws.rs.NotFoundException exception)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

DirectTemplateExceptionMapper

public DirectTemplateExceptionMapper()

Method Detail

isMappable

public boolean isMappable(javax.ws.rs.NotFoundException exception)

Specified by:

isMappable in interface org.glassfish.jersey.spi.ExtendedExceptionMapper<javax.ws.rs.NotFoundException>

toResponse

public javax.ws.rs.core.Response toResponse(javax.ws.rs.NotFoundException exception)

Specified by:

toResponse in interface javax.ws.rs.ext.ExceptionMapper<javax.ws.rs.NotFoundException>

canHandle

protected static boolean canHandle(org.glassfish.jersey.server.monitoring.RequestEvent event)

Exception event first will be catched by listener and it must not handle it initially. Then this exception mapper (which should be chosen as the closest match) will render direct template. If template rendering fails then exception will be redirected directly to error mapper. If it was already error rendering then 404 or 500 will be returned directly.

As a side effect, template rendering errors will be impossible to intercept with custom exception mappers.

Parameters:

event - exception event

Returns:

true if exception mapper will handle exception (render direct template), false otherwise