Example usage for org.apache.lucene.index DirectoryReader isCurrent

Introduction

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

Prototype

public abstract boolean isCurrent() throws IOException;

Source Link

Document

Check whether any new changes have occurred to the index since this reader was opened.

Usage

From source file:com.github.rnewson.couchdb.lucene.DatabaseIndexer.java

License:Apache License

public void info(final HttpServletRequest req, final HttpServletResponse resp)
        throws IOException, JSONException {
    final IndexState state = getState(req, resp);
    if (state == null)
        return;// www . j  ava2 s  .c om
    final DirectoryReader reader = state.borrowReader(true);
    try {
        final JSONObject result = new JSONObject();
        result.put("current", reader.isCurrent());
        result.put("disk_size", Utils.directorySize(reader.directory()));
        result.put("doc_count", reader.numDocs());
        result.put("doc_del_count", reader.numDeletedDocs());
        result.put("uuid", state.getUuid());
        result.put("digest", state.getDigest());
        result.put("update_seq", getUpdateSequence(reader.getIndexCommit().getUserData()));
        final JSONArray fields = new JSONArray();
        for (AtomicReaderContext leaf : reader.leaves()) {
            for (FieldInfo info : leaf.reader().getFieldInfos()) {
                if (info.name.startsWith("_")) {
                    continue;
                }
                if (info.isIndexed()) {
                    fields.put(info.name);
                }
            }
        }
        result.put("fields", fields);
        result.put("version", reader.getVersion());
        result.put("ref_count", reader.getRefCount());

        final JSONObject info = new JSONObject();
        info.put("code", 200);
        info.put("json", result);

        ServletUtils.setResponseContentTypeAndEncoding(req, resp);
        final Writer writer = resp.getWriter();
        try {
            writer.write(result.toString());
        } finally {
            writer.close();
        }
    } finally {
        state.returnReader(reader);
    }
}

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From source file:org.apache.solr.handler.admin.LukeRequestHandler.java

License:Apache License

public static SimpleOrderedMap<Object> getIndexInfo(DirectoryReader reader) throws IOException {
    Directory dir = reader.directory();//from   w  w w  .  j a  va 2 s.  c  om
    SimpleOrderedMap<Object> indexInfo = new SimpleOrderedMap<Object>();

    indexInfo.add("numDocs", reader.numDocs());
    indexInfo.add("maxDoc", reader.maxDoc());
    indexInfo.add("deletedDocs", reader.maxDoc() - reader.numDocs());
    indexInfo.add("indexHeapUsageBytes", getIndexHeapUsed(reader));

    indexInfo.add("version", reader.getVersion()); // TODO? Is this different then: IndexReader.getCurrentVersion( dir )?
    indexInfo.add("segmentCount", reader.leaves().size());
    indexInfo.add("current", reader.isCurrent());
    indexInfo.add("hasDeletions", reader.hasDeletions());
    indexInfo.add("directory", dir);
    indexInfo.add("userData", reader.getIndexCommit().getUserData());
    String s = reader.getIndexCommit().getUserData().get(SolrIndexWriter.COMMIT_TIME_MSEC_KEY);
    if (s != null) {
        indexInfo.add("lastModified", new Date(Long.parseLong(s)));
    }
    return indexInfo;
}

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From source file:org.apache.solr.handler.component.AlfrescoLukeRequestHandler.java

License:Open Source License

public static SimpleOrderedMap<Object> getIndexInfo(DirectoryReader reader) throws IOException {
    Directory dir = reader.directory();/* ww  w  .j  a  v a 2 s.c  o m*/
    SimpleOrderedMap<Object> indexInfo = new SimpleOrderedMap<>();

    indexInfo.add("numDocs", reader.numDocs());
    indexInfo.add("maxDoc", reader.maxDoc());
    indexInfo.add("deletedDocs", reader.maxDoc() - reader.numDocs());
    indexInfo.add("indexHeapUsageBytes", getIndexHeapUsed(reader));

    indexInfo.add("version", reader.getVersion()); // TODO? Is this
    // different then:
    // IndexReader.getCurrentVersion(
    // dir )?
    indexInfo.add("segmentCount", reader.leaves().size());
    indexInfo.add("current", reader.isCurrent());
    indexInfo.add("hasDeletions", reader.hasDeletions());
    indexInfo.add("directory", dir);
    indexInfo.add("userData", reader.getIndexCommit().getUserData());
    String s = reader.getIndexCommit().getUserData().get(SolrIndexWriter.COMMIT_TIME_MSEC_KEY);
    if (s != null) {
        indexInfo.add("lastModified", new Date(Long.parseLong(s)));
    }
    return indexInfo;
}

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