Dawid Weiss created LUCENE-9730:
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Summary: Clean up temporary folder management in Dictionary
Key: LUCENE-9730
URL: https://issues.apache.org/jira/browse/LUCENE-9730
Project: Lucene - Core
Issue Type: Sub-task
Reporter: Dawid Weiss
Reomve setDefaultTempDir, make getDefaultTempDir always evaluate temp dir
property (no lazy init as temp. dir can change over time).
Ideally, just remove the need for temp folder altogether by scanning a given
number of lead stream bytes from within a resettable stream.
{code}
private static Path DEFAULT_TEMP_DIR;
/** Used by test framework */
@SuppressWarnings("unused")
public static void setDefaultTempDir(Path tempDir) {
DEFAULT_TEMP_DIR = tempDir;
}
/**
* Returns the default temporary directory. By default, java.io.tmpdir. If
not accessible or not
* available, an IOException is thrown
*/
static synchronized Path getDefaultTempDir() throws IOException {
if (DEFAULT_TEMP_DIR == null) {
// Lazy init
String tempDirPath = System.getProperty("java.io.tmpdir");
if (tempDirPath == null) {
throw new IOException("Java has no temporary folder property
(java.io.tmpdir)?");
}
Path tempDirectory = Paths.get(tempDirPath);
if (!Files.isWritable(tempDirectory)) {
throw new IOException(
"Java's temporary folder not present or writeable?: " +
tempDirectory.toAbsolutePath());
}
DEFAULT_TEMP_DIR = tempDirectory;
}
return DEFAULT_TEMP_DIR;
}
{code}
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