package org.frameworkset.spi;
import org.frameworkset.util.beans.NestedExceptionUtils;
public abstract class NestedCheckedException extends Exception {
/** Use serialVersionUID from Spring 1.2 for interoperability */
private static final long serialVersionUID = 7100714597678207546L;
static {
// Eagerly load the NestedExceptionUtils class to avoid classloader deadlock
// issues on OSGi when calling getMessage(). Reported by Don Brown; SPR-5607.
NestedExceptionUtils.class.getName();
}
/**
* Construct a {@code NestedCheckedException} with the specified detail message.
* @param msg the detail message
*/
public NestedCheckedException(String msg) {
super(msg);
}
/**
* Construct a {@code NestedCheckedException} with the specified detail message
* and nested exception.
* @param msg the detail message
* @param cause the nested exception
*/
public NestedCheckedException(String msg, Throwable cause) {
super(msg, cause);
}
/**
* Return the detail message, including the message from the nested exception
* if there is one.
*/
@Override
public String getMessage() {
return NestedExceptionUtils.buildMessage(super.getMessage(), getCause());
}
/**
* Retrieve the innermost cause of this exception, if any.
* @return the innermost exception, or {@code null} if none
*/
public Throwable getRootCause() {
Throwable rootCause = null;
Throwable cause = getCause();
while (cause != null && cause != rootCause) {
rootCause = cause;
cause = cause.getCause();
}
return rootCause;
}
/**
* Retrieve the most specific cause of this exception, that is,
* either the innermost cause (root cause) or this exception itself.
* <p>Differs from {@link #getRootCause()} in that it falls back
* to the present exception if there is no root cause.
* @return the most specific cause (never {@code null})
* @since 2.0.3
*/
public Throwable getMostSpecificCause() {
Throwable rootCause = getRootCause();
return (rootCause != null ? rootCause : this);
}
/**
* Check whether this exception contains an exception of the given type:
* either it is of the given class itself or it contains a nested cause
* of the given type.
* @param exType the exception type to look for
* @return whether there is a nested exception of the specified type
*/
public boolean contains(Class<?> exType) {
if (exType == null) {
return false;
}
if (exType.isInstance(this)) {
return true;
}
Throwable cause = getCause();
if (cause == this) {
return false;
}
if (cause instanceof NestedCheckedException) {
return ((NestedCheckedException) cause).contains(exType);
}
else {
while (cause != null) {
if (exType.isInstance(cause)) {
return true;
}
if (cause.getCause() == cause) {
break;
}
cause = cause.getCause();
}
return false;
}
}
}