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Inheritance: java.lang.Object

public class IndexUpdater

Represents an index updater. This class performs reindexing documents in an index of an old version.

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• Update index

The example demonstrates a typical usage of the class.

 ```

 String sourceIndexFolder = "c:\\MyOldIndex\\";
 String targetIndexFolder = "c:\\MyNewIndex\\";
 IndexUpdater updater = new IndexUpdater();
 if (updater.canUpdateVersion(sourceIndexFolder)) {
     int result = updater.updateVersion(sourceIndexFolder, targetIndexFolder);
 }
 
```
 

public IndexUpdater()

Initializes a new instance of the IndexUpdater class.

public final boolean isLatestVersion(String indexPath)

Checks whether the specified directory contains an index of the latest version.

Parameters:

Returns: boolean - true if the specified directory contains an index of the latest version; otherwise false .

public final boolean canUpdateVersion(String indexPath)

Checks whether an index in the specified directory can be updated to the latest version.

Parameters:

Returns: boolean - true if an index in the specified directory can be updated to the latest version; otherwise false .

public final VersionUpdateResult updateVersion(String indexPath, String newIndexPath)

Performs reindexing documents in an index of an old version. The updated index will be placed in the newIndexPath directory. The index in the indexPath directory will not be changed.

Parameters:

Returns: VersionUpdateResult - The result of the index version update operation.