本文整理匯總了Java中org.apache.lucene.store.Directory.fileExists方法的典型用法代碼示例。如果您正苦於以下問題：Java Directory.fileExists方法的具體用法？Java Directory.fileExists怎麽用？Java Directory.fileExists使用的例子？那麽, 這裏精選的方法代碼示例或許可以為您提供幫助。您也可以進一步了解該方法所在類org.apache.lucene.store.Directory的用法示例。
在下文中一共展示了Directory.fileExists方法的2個代碼示例，這些例子默認根據受歡迎程度排序。您可以為喜歡或者感覺有用的代碼點讚，您的評價將有助於係統推薦出更棒的Java代碼示例。
示例1: vectorsReader
import org.apache.lucene.store.Directory; //導入方法依賴的package包/類
@Override
public TermVectorsReader vectorsReader(Directory directory, SegmentInfo segmentInfo, FieldInfos fieldInfos, IOContext context) throws IOException {
final String fileName = IndexFileNames.segmentFileName(Lucene3xSegmentInfoFormat.getDocStoreSegment(segmentInfo), "", Lucene3xTermVectorsReader.VECTORS_FIELDS_EXTENSION);
// Unfortunately, for 3.x indices, each segment's
// FieldInfos can lie about hasVectors (claim it's true
// when really it's false).... so we have to carefully
// check if the files really exist before trying to open
// them (4.x has fixed this):
final boolean exists;
if (Lucene3xSegmentInfoFormat.getDocStoreOffset(segmentInfo) != -1 && Lucene3xSegmentInfoFormat.getDocStoreIsCompoundFile(segmentInfo)) {
String cfxFileName = IndexFileNames.segmentFileName(Lucene3xSegmentInfoFormat.getDocStoreSegment(segmentInfo), "", Lucene3xCodec.COMPOUND_FILE_STORE_EXTENSION);
if (segmentInfo.dir.fileExists(cfxFileName)) {
Directory cfsDir = new CompoundFileDirectory(segmentInfo.dir, cfxFileName, context, false);
try {
exists = cfsDir.fileExists(fileName);
} finally {
cfsDir.close();
}
} else {
exists = false;
}
} else {
exists = directory.fileExists(fileName);
}
if (!exists) {
// 3x's FieldInfos sometimes lies and claims a segment
// has vectors when it doesn't:
return null;
} else {
return new Lucene3xTermVectorsReader(directory, segmentInfo, fieldInfos, context);
}
}
示例2: addIfExists
import org.apache.lucene.store.Directory; //導入方法依賴的package包/類
private static void addIfExists(Directory dir, Set<String> files, String fileName) throws IOException {
if (dir.fileExists(fileName)) {
files.add(fileName);
}
}