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// Copyright Vespa.ai. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.vespa.model.search;
import com.yahoo.document.select.*;
import com.yahoo.document.select.convert.SelectionExpressionConverter;
import com.yahoo.document.select.parser.ParseException;
import java.util.Map;
/**
* @author Ulf Lilleengen
*/
// TODO: This should be renamed to reflect it is only a validator of expressions
// (in DocumentSelector and SelectionExpressionConverter)
public class DocumentSelectionConverter {
private final DocumentSelector selector;
private final Map<String, String> queryExpressionMap;
public DocumentSelectionConverter(String selection) throws ParseException, UnsupportedOperationException, IllegalArgumentException {
this.selector = new DocumentSelector(selection);
NowCheckVisitor nowChecker = new NowCheckVisitor();
selector.visit(nowChecker);
if (nowChecker.requiresConversion()) {
SelectionExpressionConverter converter = new SelectionExpressionConverter();
selector.visit(converter);
this.queryExpressionMap = converter.getQueryMap();
} else {
this.queryExpressionMap = null;
}
}
/**
* Transforms the selection into a search query.
*
* @return a search query representing the selection
*/
public String getQuery(String documentType) {
if (queryExpressionMap == null)
return null;
if (!queryExpressionMap.containsKey(documentType))
return null;
return queryExpressionMap.get(documentType);
}
/**
* Transforms the selection into an inverted search query.
*
* @return a search query representing the selection
*/
public String getInvertedQuery(String documentType) {
String query = getQuery(documentType);
if (query == null)
return null;
return query.replaceAll(">", "<");
}
}
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