Package org.neo4j.gds.utils

Class ExceptionUtil

java.lang.Object

org.neo4j.gds.utils.ExceptionUtil

public final class ExceptionUtil
extends java.lang.Object

Field Summary

Fields

Modifier and Type	Field	Description
static CheckedConsumer<java.lang.Exception,java.lang.Exception>	RETHROW_CHECKED
static CheckedConsumer<java.lang.Exception,java.lang.RuntimeException>	RETHROW_UNCHECKED

Method Summary

Modifier and Type	Method	Description
static <T,R,E extends java.lang.Exception> R	apply(CheckedFunction<? super T,? extends R,E> function, T input)
static <T extends java.lang.Throwable> T	chain(T initial, T current)	Adds the current exception to the initial exception as suppressed.
static void	closeAll(java.lang.AutoCloseable... closeables)
static void	closeAll(java.lang.Iterable<? extends java.lang.AutoCloseable> closeables)
static void	closeAll(java.util.Iterator<? extends java.lang.AutoCloseable> closeables)
static void	closeAll(java.util.stream.Stream<? extends java.lang.AutoCloseable> closeables)
static <E extends java.lang.Exception> void	closeAll(CheckedConsumer<java.lang.Exception,E> handler, java.lang.AutoCloseable... closeables)
static <E extends java.lang.Exception> void	closeAll(CheckedConsumer<java.lang.Exception,E> handler, java.lang.Iterable<? extends java.lang.AutoCloseable> closeables)
static <E extends java.lang.Exception> void	closeAll(CheckedConsumer<java.lang.Exception,E> handler, java.util.Iterator<? extends java.lang.AutoCloseable> closeables)
static <E extends java.lang.Exception> void	closeAll(CheckedConsumer<java.lang.Exception,E> handler, java.util.stream.Stream<? extends java.lang.AutoCloseable> closeables)
static <T,E extends java.lang.Exception> java.util.function.Consumer<T>	consumer(CheckedConsumer<T,E> consumer)
static <T,R,E extends java.lang.Exception> java.util.function.Function<T,R>	function(CheckedFunction<T,R,E> function)
static java.lang.Throwable	rootCause(java.lang.Throwable caughtException)	Returns the root cause of an exception.
static <E extends java.lang.Exception> void	run(CheckedRunnable<E> runnable)
static <T,E extends java.lang.Exception> java.util.function.Supplier<? extends T>	supplier(CheckedSupplier<? extends T,E> supplier)
static <T,E extends java.lang.Exception> T	supply(CheckedSupplier<? extends T,E> supplier)
static void	throwIfUnchecked(java.lang.Throwable exception)	Rethrows exception if it is an instance of RuntimeException or Error.
static <E extends java.lang.Exception> java.lang.Runnable	unchecked(CheckedRunnable<E> runnable)
static void	validateSourceNodeIsLoaded(long mappedId, long neoId)
static void	validateTargetNodeIsLoaded(long mappedId, long neoId)

Methods inherited from class java.lang.Object

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

Field Detail

RETHROW_CHECKED

public static final CheckedConsumer<java.lang.Exception,java.lang.Exception> RETHROW_CHECKED

RETHROW_UNCHECKED

public static final CheckedConsumer<java.lang.Exception,java.lang.RuntimeException> RETHROW_UNCHECKED

Method Detail

rootCause

public static java.lang.Throwable rootCause(java.lang.Throwable caughtException)

Returns the root cause of an exception. Copied from org.neo4j.helpers.Exceptions#rootCause(Throwable) due to deprecation.

Parameters:

caughtException - exception to find the root cause of.

Returns:

the root cause.

Throws:

java.lang.IllegalArgumentException - if the provided exception is null.

chain

@Contract("null, _ -> param2; !null, _ -> !null")
@Nullable
public static <T extends java.lang.Throwable> T chain(@Nullable
                                                      T initial,
                                                      @Nullable
                                                      T current)

Adds the current exception to the initial exception as suppressed. Copied from org.neo4j.helpers.Exceptions#chain(Throwable, Throwable) due to deprecation.

closeAll

public static void closeAll(java.util.stream.Stream<? extends java.lang.AutoCloseable> closeables)
                     throws java.lang.Exception

Throws:

java.lang.Exception

closeAll

public static void closeAll(java.lang.AutoCloseable... closeables)
                     throws java.lang.Exception

Throws:

java.lang.Exception

closeAll

public static void closeAll(java.lang.Iterable<? extends java.lang.AutoCloseable> closeables)
                     throws java.lang.Exception

Throws:

java.lang.Exception

closeAll

public static void closeAll(java.util.Iterator<? extends java.lang.AutoCloseable> closeables)
                     throws java.lang.Exception

Throws:

java.lang.Exception

closeAll

public static <E extends java.lang.Exception> void closeAll(CheckedConsumer<java.lang.Exception,E> handler,
                                                            java.util.stream.Stream<? extends java.lang.AutoCloseable> closeables)
                                                     throws E extends java.lang.Exception

Throws:

E extends java.lang.Exception

closeAll

public static <E extends java.lang.Exception> void closeAll(CheckedConsumer<java.lang.Exception,E> handler,
                                                            java.lang.AutoCloseable... closeables)
                                                     throws E extends java.lang.Exception

Throws:

E extends java.lang.Exception

closeAll

public static <E extends java.lang.Exception> void closeAll(CheckedConsumer<java.lang.Exception,E> handler,
                                                            java.lang.Iterable<? extends java.lang.AutoCloseable> closeables)
                                                     throws E extends java.lang.Exception

Throws:

E extends java.lang.Exception

closeAll

public static <E extends java.lang.Exception> void closeAll(CheckedConsumer<java.lang.Exception,E> handler,
                                                            java.util.Iterator<? extends java.lang.AutoCloseable> closeables)
                                                     throws E extends java.lang.Exception

Throws:

E extends java.lang.Exception

throwIfUnchecked

public static void throwIfUnchecked(java.lang.Throwable exception)

Rethrows exception if it is an instance of RuntimeException or Error. Typical usage is:

 catch (Throwable e) {
   ......common code......
   throwIfUnchecked(e);
   throw new RuntimeException(e);
 }
 

This will only wrap checked exception in a RuntimeException. Do note that if the segment common code is missing, it's preferable to use this instead:

 catch (RuntimeException | Error e) {
   throw e;
 }
 catch (Throwable e) {
   throw new RuntimeException(e);
 }
 

Parameters:

exception - to rethrow.

unchecked

public static <E extends java.lang.Exception> java.lang.Runnable unchecked(CheckedRunnable<E> runnable)

run

public static <E extends java.lang.Exception> void run(CheckedRunnable<E> runnable)

consumer

public static <T,E extends java.lang.Exception> java.util.function.Consumer<T> consumer(CheckedConsumer<T,E> consumer)

function

public static <T,R,E extends java.lang.Exception> java.util.function.Function<T,R> function(CheckedFunction<T,R,E> function)

supplier

public static <T,E extends java.lang.Exception> java.util.function.Supplier<? extends T> supplier(CheckedSupplier<? extends T,E> supplier)

supply

public static <T,E extends java.lang.Exception> T supply(CheckedSupplier<? extends T,E> supplier)

apply

public static <T,R,E extends java.lang.Exception> R apply(CheckedFunction<? super T,? extends R,E> function,
                                                                      T input)

validateTargetNodeIsLoaded

public static void validateTargetNodeIsLoaded(long mappedId,
                                              long neoId)

validateSourceNodeIsLoaded

public static void validateSourceNodeIsLoaded(long mappedId,
                                              long neoId)