Package org.opencastproject.elasticsearch.index

Class QueryPreprocessor

java.lang.Object

org.opencastproject.elasticsearch.index.QueryPreprocessor

public final class QueryPreprocessor
extends Object

Utility class to preprocess potentially malformed Lucene query strings. The following sanitations are performed: - Escape special characters that would potentially lead to malformed queries - Enable partial search by adding '*' as both prefix and suffix to individual terms - Exception: Double-quoted terms - Sanitize use of double quotes by appending a double quote at the end of the sanitized query in case the closing double quote is missing - Ensure that + und - are interpreted in a user-friendly way, i.e. test-unit is not interpreted as test -unit

Method Summary

Modifier and Type	Method	Description
static String	sanitize(String query)	Sanitize a potentially malformed query string so it conforms to the Lucene query syntax

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Details

sanitize

public static String sanitize(String query)

Sanitize a potentially malformed query string so it conforms to the Lucene query syntax

Parameters:

query - potentially malformed Lucene query string

Returns:

sanitized query string