Example usage for java.lang Throwable getCause

Introduction

In this page you can find the example usage for java.lang Throwable getCause.

Prototype

public synchronized Throwable getCause()

Source Link

Document

Returns the cause of this throwable or null if the cause is nonexistent or unknown.

Usage

From source file:Main.java

/**
 * From the given throwable or its cause, or cause's cause, etc.,
 * get the first one that has a non-empty message, and return that message.
 *
 * @param t//from  www.  jav a  2s  .c  o  m
 * @return the first non-empty message string, or null.
 */
public static String getFirstMeaningfulMessage(Throwable t) {
    if (t == null)
        return null;
    String m = t.getMessage();
    if (m != null && !m.isEmpty()) {
        return m;
    }
    return getFirstMeaningfulMessage(t.getCause());
}

From source file:it.tidalwave.northernwind.frontend.ui.component.sitemap.DefaultSitemapViewController.java

/*******************************************************************************************************************
 *
 *
 ******************************************************************************************************************/
@Nonnull/*from  ww  w  . j av a2 s.  c o m*/
private static Throwable rootCause(final @Nonnull Throwable t) {
    final Throwable cause = t.getCause();
    return (cause != null) ? rootCause(cause) : t;
}

From source file:ExceptionUtils.java

/**
 * Locates a particular type of exception, working its way via the cause property of each exception in the exception
 * stack.// ww w .j  a va 2s.  c om
 *
 * @param t    the outermost exception
 * @param type the type of exception to search for
 * @return the first exception of the given type, if found, or null
 */
public static <T extends Throwable> T findCause(Throwable t, Class<T> type) {
    Throwable current = t;

    while (current != null) {
        if (type.isInstance(current))
            return type.cast(current);

        // Not a match, work down.

        current = current.getCause();
    }

    return null;
}

From source file:com.myee.tarot.core.exception.ExceptionHelper.java

public static <G extends Throwable, J extends RuntimeException> void processException(Class<G> refineType,
        Class<J> wrapType, String message, Throwable e) throws G {
    if (refineType.isAssignableFrom(e.getClass())) {
        throw (G) e;
    }//from   w  w w  . j av a 2 s  .  co m
    if (e.getCause() != null) {
        processException(refineType, wrapType, message, e.getCause());
    }
    if (e instanceof UndeclaredThrowableException) {
        processException(refineType, wrapType, message,
                ((UndeclaredThrowableException) e).getUndeclaredThrowable());
    }
    if (e instanceof InvocationTargetException) {
        processException(refineType, wrapType, message, ((InvocationTargetException) e).getTargetException());
    }
    throw wrapException(e, wrapType, message);
}

From source file:org.addhen.birudo.data.net.BaseHttpClient.java

public static Throwable getRootCause(Throwable throwable) {
    if (throwable.getCause() != null) {
        return getRootCause(throwable.getCause());
    }//from w w w .  j a va  2s .c o  m
    return throwable;
}

From source file:io.servicecomb.foundation.vertx.VertxUtils.java

private static <T> void complete(AsyncResultCallback<T> callback, T result, Throwable e) {
    if (e != null) {
        callback.fail(e.getCause());
        return;//from   w ww .j a v a  2s .  c  o  m
    }

    callback.success(result);
}

From source file:com.opengamma.language.connector.Main.java

/**
 * Entry point from the service wrapper - starts the service.
 * // w  w  w  .j a v a 2s .c  o m
 * @return null if the service started properly, otherwise a string for display to the user describing why the stack wasn't started
 */
public static String svcStart() {
    try {
        s_logger.info("Starting OpenGamma language integration service");
        s_springContext = new LanguageSpringContext();
        return null;
    } catch (final BeanCreationException e) {
        s_logger.error("Exception thrown", e);
        Throwable t = e;
        do {
            t = t.getCause();
        } while (t instanceof BeanCreationException);
        if (t != null) {
            return t.getMessage();
        } else {
            return e.getMessage();
        }
    } catch (final Throwable t) {
        s_logger.error("Exception thrown", t);
        return t.getMessage();
    }
}

From source file:com.opengamma.engine.depgraph.ExceptionWrapper.java

/**
 * Create a new wrapper instance and add it to the canonical map.
 * /* w  ww.  j  av a 2s  .  c  om*/
 * @param exception exception to wrap
 * @param canon the canonical map to add to
 */
public static ExceptionWrapper createAndPut(final Throwable exception,
        final Map<ExceptionWrapper, ExceptionWrapper> canon) {
    final ExceptionWrapper instance;
    final Throwable cause = exception.getCause();
    if (cause != null) {
        instance = new ExceptionWrapper(exception, createAndPut(cause, canon));
    } else {
        instance = new ExceptionWrapper(exception, null);
    }
    final ExceptionWrapper existing = canon.get(instance);
    if (existing != null) {
        existing.incrementCount();
        return existing;
    } else {
        canon.put(instance, instance);
        return instance;
    }
}

From source file:com.myee.tarot.core.exception.ExceptionHelper.java

public static <G extends Throwable, J extends RuntimeException> RuntimeException refineException(
        Class<G> refineType, Class<J> wrapType, String message, Throwable e) {
    if (refineType.isAssignableFrom(e.getClass())) {
        return wrapException(e, wrapType, message);
    }//from w  ww. j a  va2s  .c  om
    if (e.getCause() != null) {
        return refineException(refineType, wrapType, message, e.getCause());
    }
    if (e instanceof UndeclaredThrowableException) {
        return refineException(refineType, wrapType, message,
                ((UndeclaredThrowableException) e).getUndeclaredThrowable());
    }
    if (e instanceof InvocationTargetException) {
        return refineException(refineType, wrapType, message,
                ((InvocationTargetException) e).getTargetException());
    }
    return wrapException(e, wrapType, message);
}

From source file:com.qwazr.utils.http.HttpResponseEntityException.java

public static HttpResponseEntityException findFirstCause(Throwable e) {
    if (e == null)
        return null;
    if (e instanceof HttpResponseEntityException)
        return (HttpResponseEntityException) e;
    return findFirstCause(e.getCause());
}