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Posted to issues@commons.apache.org by "Sebb (JIRA)" <ji...@apache.org> on 2016/03/10 21:30:41 UTC
[jira] [Commented] (IO-500) IOUtils: plz include close* functions
from lucene util's IOUtils class
[ https://issues.apache.org/jira/browse/IO-500?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15189892#comment-15189892 ]
Sebb commented on IO-500:
-------------------------
It's not safe to catch and ignore Throwable. The code should only catch IOException.
There is already a closeQuietly(Closeable) method:
http://commons.apache.org/proper/commons-io/javadocs/api-2.4/org/apache/commons/io/IOUtils.html#closeQuietly%28java.io.Closeable%29
That could perhaps be overloaded to accept an Iterable.
> IOUtils: plz include close* functions from lucene util's IOUtils class
> ----------------------------------------------------------------------
>
> Key: IO-500
> URL: https://issues.apache.org/jira/browse/IO-500
> Project: Commons IO
> Issue Type: Improvement
> Components: Utilities
> Reporter: Mark
> Priority: Minor
>
> {code}
> /**
> * Closes all given <tt>Closeable</tt>s. Some of the
> * <tt>Closeable</tt>s may be null; they are
> * ignored. After everything is closed, the method either
> * throws the first exception it hit while closing, or
> * completes normally if there were no exceptions.
> *
> * @param objects
> * objects to call <tt>close()</tt> on
> */
> public static void close(Closeable... objects) throws IOException {
> close(Arrays.asList(objects));
> }
>
> /**
> * Closes all given <tt>Closeable</tt>s.
> * @see #close(Closeable...)
> */
> public static void close(Iterable<? extends Closeable> objects) throws IOException {
> Throwable th = null;
> for (Closeable object : objects) {
> try {
> if (object != null) {
> object.close();
> }
> } catch (Throwable t) {
> addSuppressed(th, t);
> if (th == null) {
> th = t;
> }
> }
> }
> reThrow(th);
> }
> /**
> * Closes all given <tt>Closeable</tt>s, suppressing all thrown exceptions.
> * Some of the <tt>Closeable</tt>s may be null, they are ignored.
> *
> * @param objects
> * objects to call <tt>close()</tt> on
> */
> public static void closeWhileHandlingException(Closeable... objects) {
> closeWhileHandlingException(Arrays.asList(objects));
> }
>
> /**
> * Closes all given <tt>Closeable</tt>s, suppressing all thrown exceptions.
> * @see #closeWhileHandlingException(Closeable...)
> */
> public static void closeWhileHandlingException(Iterable<? extends Closeable> objects) {
> for (Closeable object : objects) {
> try {
> if (object != null) {
> object.close();
> }
> } catch (Throwable t) {
> }
> }
> }
>
> /** adds a Throwable to the list of suppressed Exceptions of the first Throwable
> * @param exception this exception should get the suppressed one added
> * @param suppressed the suppressed exception
> */
> private static void addSuppressed(Throwable exception, Throwable suppressed) {
> if (exception != null && suppressed != null) {
> exception.addSuppressed(suppressed);
> }
> }
> {code}
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