Example usage for org.apache.lucene.index SegmentInfos getIndexCreatedVersionMajor

Introduction

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

Prototype

public int getIndexCreatedVersionMajor() 

Source Link

Document

Return the version major that was used to initially create the index.

Usage

From source file:org.opengrok.indexer.index.IndexVersion.java

License:Open Source License

/**
 * Check index version in given directory. It assumes that that all commits
 * in the Lucene segment file were done with the same version.
 *
 * @param dir directory with index//from ww w  . j a v a  2  s.c  om
 * @thows IOException if the directory cannot be opened
 */
private static void checkDir(File dir) throws Exception {
    LockFactory lockfact = NativeFSLockFactory.INSTANCE;
    int segVersion;

    try (Directory indexDirectory = FSDirectory.open(dir.toPath(), lockfact)) {
        SegmentInfos segInfos = null;

        try {
            segInfos = SegmentInfos.readLatestCommit(indexDirectory);
            segVersion = segInfos.getIndexCreatedVersionMajor();
        } catch (IndexNotFoundException e) {
            return;
        }
    }

    if (segVersion != Version.LATEST.major) {
        throw new IndexVersionException(String.format("Directory %s has index of version %d and Lucene has %d",
                dir.toString(), segVersion, Version.LATEST.major));
    }
}

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