Author: fanningpj
Date: Mon Jun 16 10:54:41 2025
New Revision: 1926465
URL: http://svn.apache.org/viewvc?rev=1926465&view=rev
Log:
[bug-69714] add thread local support for overriding TempFile strategy
Modified:
poi/trunk/poi/src/main/java/org/apache/poi/util/TempFile.java
Modified: poi/trunk/poi/src/main/java/org/apache/poi/util/TempFile.java
URL:
http://svn.apache.org/viewvc/poi/trunk/poi/src/main/java/org/apache/poi/util/TempFile.java?rev=1926465&r1=1926464&r2=1926465&view=diff
==============================================================================
--- poi/trunk/poi/src/main/java/org/apache/poi/util/TempFile.java (original)
+++ poi/trunk/poi/src/main/java/org/apache/poi/util/TempFile.java Mon Jun 16
10:54:41 2025
@@ -27,6 +27,13 @@ public final class TempFile {
/** The strategy used by {@link #createTempFile(String, String)} to create
the temporary files. */
private static TempFileCreationStrategy strategy = new
DefaultTempFileCreationStrategy();
+ /** If set for the thread, this is used instead of the strategy variable
above. */
+ private static final ThreadLocal<TempFileCreationStrategy>
threadLocalStrategy = new ThreadLocal<>();
+ static {
+ // allow to clear all thread-locals via ThreadLocalUtil
+ ThreadLocalUtil.registerCleaner(threadLocalStrategy::remove);
+ }
+
/** Define a constant for this property as it is sometimes mistyped as
"tempdir" otherwise */
public static final String JAVA_IO_TMPDIR = "java.io.tmpdir";
@@ -47,6 +54,21 @@ public final class TempFile {
}
TempFile.strategy = strategy;
}
+
+ /**
+ * Configures the strategy used by {@link #createTempFile(String, String)}
to create the temporary files.
+ *
+ * @param strategy The new strategy to be used to create the temporary
files.
+ *
+ * @throws IllegalArgumentException When the given strategy is
<code>null</code>.
+ * @since POI 5.4.2
+ */
+ public static void
setThreadLocalTempFileCreationStrategy(TempFileCreationStrategy strategy) {
+ if (strategy == null) {
+ throw new IllegalArgumentException("strategy == null");
+ }
+ threadLocalStrategy.set(strategy);
+ }
/**
* Creates a new and empty temporary file. By default, files are collected
into one directory and are not
@@ -64,10 +86,15 @@ public final class TempFile {
* @throws IOException If no temporary file could be created.
*/
public static File createTempFile(String prefix, String suffix) throws
IOException {
- return strategy.createTempFile(prefix, suffix);
+ return getStrategy().createTempFile(prefix, suffix);
}
public static File createTempDirectory(String name) throws IOException {
- return strategy.createTempDirectory(name);
+ return getStrategy().createTempDirectory(name);
+ }
+
+ private static TempFileCreationStrategy getStrategy() {
+ TempFileCreationStrategy s = threadLocalStrategy.get();
+ return s == null ? strategy: s;
}
}
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