Java Directory.deleteFile方法代碼示例

import org.apache.lucene.store.Directory; //導入方法依賴的package包/類
/**
 * Deletes all corruption markers from this store.
 */
public void removeCorruptionMarker() throws IOException {
    ensureOpen();
    final Directory directory = directory();
    IOException firstException = null;
    final String[] files = directory.listAll();
    for (String file : files) {
        if (file.startsWith(CORRUPTED)) {
            try {
                directory.deleteFile(file);
            } catch (IOException ex) {
                if (firstException == null) {
                    firstException = ex;
                } else {
                    firstException.addSuppressed(ex);
                }
            }
        }
    }
    if (firstException != null) {
        throw firstException;
    }
}
 

import org.apache.lucene.store.Directory; //導入方法依賴的package包/類
/**
 * This method removes all lucene files from the given directory. It will first try to delete all commit points / segments
 * files to ensure broken commits or corrupted indices will not be opened in the future. If any of the segment files can't be deleted
 * this operation fails.
 */
public static void cleanLuceneIndex(Directory directory) throws IOException {
    try (Lock writeLock = directory.obtainLock(IndexWriter.WRITE_LOCK_NAME)) {
        for (final String file : directory.listAll()) {
            if (file.startsWith(IndexFileNames.SEGMENTS) || file.equals(IndexFileNames.OLD_SEGMENTS_GEN)) {
                directory.deleteFile(file); // remove all segment_N files
            }
        }
    }
    try (IndexWriter writer = new IndexWriter(directory, new IndexWriterConfig(Lucene.STANDARD_ANALYZER)
            .setMergePolicy(NoMergePolicy.INSTANCE) // no merges
            .setCommitOnClose(false) // no commits
            .setOpenMode(IndexWriterConfig.OpenMode.CREATE))) // force creation - don't append...
    {
        // do nothing and close this will kick of IndexFileDeleter which will remove all pending files
    }
}
 

import org.apache.lucene.store.Directory; //導入方法依賴的package包/類
/**
 * Deletes all given files, suppressing all thrown IOExceptions.
 * <p>
 * Note that the files should not be null.
 */
public static void deleteFilesIgnoringExceptions(Directory dir, String... files) {
  for (String name : files) {
    try {
      dir.deleteFile(name);
    } catch (Throwable ignored) {
      // ignore
    }
  }
}