Example usage for org.apache.lucene.index IndexDeletionPolicy IndexDeletionPolicy

Introduction

In this page you can find the example usage for org.apache.lucene.index IndexDeletionPolicy IndexDeletionPolicy.

Prototype

protected IndexDeletionPolicy() 

Source Link

Document

Sole constructor, typically called by sub-classes constructors.

Usage

From source file:org.apache.solr.core.snapshots.SolrSnapshotManager.java

License:Apache License

/**
 * This method deletes index files of the {@linkplain IndexCommit} for the specified generation number.
 *
 * @param core The Solr core//ww w.ja v  a  2s  .com
 * @param dir The index directory storing the snapshot.
 * @param gen The generation number of the {@linkplain IndexCommit} to be deleted.
 * @throws IOException in case of I/O errors.
 */
public static void deleteSnapshotIndexFiles(SolrCore core, Directory dir, final long gen) throws IOException {
    deleteSnapshotIndexFiles(core, dir, new IndexDeletionPolicy() {
        @Override
        public void onInit(List<? extends IndexCommit> commits) throws IOException {
            for (IndexCommit ic : commits) {
                if (gen == ic.getGeneration()) {
                    log.info("Deleting non-snapshotted index commit with generation {}", ic.getGeneration());
                    ic.delete();
                }
            }
        }

        @Override
        public void onCommit(List<? extends IndexCommit> commits) throws IOException {
        }
    });
}

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From source file:org.apache.solr.core.snapshots.SolrSnapshotManager.java

License:Apache License

/**
 * This method deletes index files not associated with the specified <code>snapshots</code>.
 *
 * @param core The Solr core//  w  w w. j av a  2  s  .c  om
 * @param dir The index directory storing the snapshot.
 * @param snapshots The snapshots to be preserved.
 * @throws IOException in case of I/O errors.
 */
public static void deleteNonSnapshotIndexFiles(SolrCore core, Directory dir,
        Collection<SnapshotMetaData> snapshots) throws IOException {
    final Set<Long> genNumbers = new HashSet<>();
    for (SnapshotMetaData m : snapshots) {
        genNumbers.add(m.getGenerationNumber());
    }

    deleteSnapshotIndexFiles(core, dir, new IndexDeletionPolicy() {
        @Override
        public void onInit(List<? extends IndexCommit> commits) throws IOException {
            for (IndexCommit ic : commits) {
                if (!genNumbers.contains(ic.getGeneration())) {
                    log.info("Deleting non-snapshotted index commit with generation {}", ic.getGeneration());
                    ic.delete();
                }
            }
        }

        @Override
        public void onCommit(List<? extends IndexCommit> commits) throws IOException {
        }
    });
}

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