本文整理汇总了Java中org.apache.lucene.util.StringHelper.getVersionComparator方法的典型用法代码示例。如果您正苦于以下问题：Java StringHelper.getVersionComparator方法的具体用法？Java StringHelper.getVersionComparator怎么用？Java StringHelper.getVersionComparator使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类org.apache.lucene.util.StringHelper的用法示例。
在下文中一共展示了StringHelper.getVersionComparator方法的2个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Java代码示例。
示例1: testOldVersions
import org.apache.lucene.util.StringHelper; //导入方法依赖的package包/类
/**
* Test that we didn't forget to bump the current Constants.LUCENE_MAIN_VERSION.
* This is important so that we can determine which version of lucene wrote the segment.
*/
public void testOldVersions() throws Exception {
// first create a little index with the current code and get the version
Directory currentDir = newDirectory();
RandomIndexWriter riw = new RandomIndexWriter(random(), currentDir);
riw.addDocument(new Document());
riw.close();
DirectoryReader ir = DirectoryReader.open(currentDir);
SegmentReader air = (SegmentReader)ir.leaves().get(0).reader();
String currentVersion = air.getSegmentInfo().info.getVersion();
assertNotNull(currentVersion); // only 3.0 segments can have a null version
ir.close();
currentDir.close();
Comparator<String> comparator = StringHelper.getVersionComparator();
// now check all the old indexes, their version should be < the current version
for (String name : oldNames) {
Directory dir = oldIndexDirs.get(name);
DirectoryReader r = DirectoryReader.open(dir);
for (AtomicReaderContext context : r.leaves()) {
air = (SegmentReader) context.reader();
String oldVersion = air.getSegmentInfo().info.getVersion();
// TODO: does preflex codec actually set "3.0" here? This is safe to do I think.
// assertNotNull(oldVersion);
assertTrue("current Constants.LUCENE_MAIN_VERSION is <= an old index: did you forget to bump it?!",
oldVersion == null || comparator.compare(oldVersion, currentVersion) < 0);
}
r.close();
}
}
示例2: testOldVersions
import org.apache.lucene.util.StringHelper; //导入方法依赖的package包/类
/**
* Test that we didn't forget to bump the current Constants.LUCENE_MAIN_VERSION.
* This is important so that we can determine which version of lucene wrote the segment.
*/
public void testOldVersions() throws Exception {
// first create a little index with the current code and get the version
Directory currentDir = newDirectory();
RandomIndexWriter riw = new RandomIndexWriter(random(), currentDir);
riw.addDocument(new Document());
riw.close();
DirectoryReader ir = DirectoryReader.open(currentDir);
SegmentReader air = (SegmentReader)ir.leaves().get(0).reader();
String currentVersion = air.getSegmentInfo().info.getVersion();
assertNotNull(currentVersion); // only 3.0 segments can have a null version
ir.close();
currentDir.close();
Comparator<String> comparator = StringHelper.getVersionComparator();
// now check all the old indexes, their version should be < the current version
for (String name : oldNames) {
Directory dir = oldIndexDirs.get(name);
DirectoryReader r = DirectoryReader.open(dir);
for (AtomicReaderContext context : r.leaves()) {
air = (SegmentReader) context.reader();
String oldVersion = air.getSegmentInfo().info.getVersion();
assertNotNull(oldVersion); // only 3.0 segments can have a null version
assertTrue("current Constants.LUCENE_MAIN_VERSION is <= an old index: did you forget to bump it?!",
comparator.compare(oldVersion, currentVersion) < 0);
}
r.close();
}
}