Examples with TransactionLogFilesHelper org.neo4j.kernel.impl.transaction.log.files.TransactionLogFilesHelper used on opensource projects

Example 1 with TransactionLogFilesHelper

use of org.neo4j.kernel.impl.transaction.log.files.TransactionLogFilesHelper in project neo4j by neo4j.

the class BatchingNeoStores method databaseExistsAndContainsData.

private boolean databaseExistsAndContainsData() {
    TransactionLogFilesHelper logFilesHelper = new TransactionLogFilesHelper(fileSystem, databaseLayout.getTransactionLogsDirectory());
    TransactionLogFilesHelper checkpointFilesHelper = new TransactionLogFilesHelper(fileSystem, databaseLayout.getTransactionLogsDirectory(), CHECKPOINT_FILE_PREFIX);
    try {
        if (logFilesHelper.getMatchedFiles().length > 0 || checkpointFilesHelper.getMatchedFiles().length > 0) {
            return true;
        }
    } catch (IOException e) {
    // Could not check txlogs (does not exist?) Do nothing
    }
    Path metaDataFile = databaseLayout.metadataStore();
    try (PagedFile pagedFile = pageCache.map(metaDataFile, pageCache.pageSize(), databaseName, immutable.of(READ))) {
    // OK so the db probably exists
    } catch (IOException e) {
        // It's OK
        return false;
    }
    try (NeoStores stores = newStoreFactory(databaseLayout, idGeneratorFactory, pageCacheTracer, immutable.empty()).openNeoStores(StoreType.NODE, StoreType.RELATIONSHIP)) {
        return stores.getNodeStore().getHighId() > 0 || stores.getRelationshipStore().getHighId() > 0;
    }
}