Example usage for org.apache.lucene.index IndexWriterConfig setIndexDeletionPolicy

Introduction

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

Prototype

public IndexWriterConfig setIndexDeletionPolicy(IndexDeletionPolicy delPolicy)

Source Link

Document

Expert: allows an optional IndexDeletionPolicy implementation to be specified.

Usage

From source file:proj.zoie.impl.indexing.internal.DiskSearchIndex.java

License:Apache License

/**
 * Opens an index modifier./*from   w w w . j  a v a 2s .  c om*/
 * @param analyzer Analyzer
 * @return IndexModifer instance
 */
public IndexWriter openIndexWriter(Analyzer analyzer, Similarity similarity) throws IOException {
    if (_indexWriter != null)
        return _indexWriter;

    Directory directory = _dirMgr.getDirectory(true);

    log.info("opening index writer at: " + _dirMgr.getPath());

    ZoieMergePolicy mergePolicy = new ZoieMergePolicy();
    mergePolicy.setMergePolicyParams(_mergePolicyParams);

    // hao: autocommit is set to false with this constructor
    IndexWriterConfig config = new IndexWriterConfig(Version.LUCENE_34, analyzer);
    config.setOpenMode(OpenMode.CREATE_OR_APPEND);
    config.setIndexDeletionPolicy(_deletionPolicy);
    config.setMergeScheduler(_mergeScheduler);
    config.setMergePolicy(mergePolicy);
    config.setReaderPooling(false);
    if (similarity != null) {
        config.setSimilarity(similarity);
    }
    config.setRAMBufferSizeMB(5);
    IndexWriter idxWriter = new IndexWriter(directory, config);

    _indexWriter = idxWriter;
    return idxWriter;
}