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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.search.query.parser;
import com.yahoo.prelude.query.parser.*;
import com.yahoo.search.Query;
import com.yahoo.search.query.SelectParser;
import com.yahoo.search.yql.YqlParser;
/**
* Implements a factory for {@link Parser}.
*
* @author Simon Thoresen Hult
*/
public final class ParserFactory {
private ParserFactory() {
// hide
}
/**
* Creates a {@link Parser} appropriate for the given <code>Query.Type</code>, providing the Parser with access to
* the {@link ParserEnvironment} given.
*
* @param type the query type for which to create a Parser
* @param environment the environment settings to attach to the Parser
* @return the created Parser
*/
@SuppressWarnings("deprecation")
public static Parser newInstance(Query.Type type, ParserEnvironment environment) {
switch (type) {
case ALL:
return new AllParser(environment, false);
case ANY:
return new AnyParser(environment);
case PHRASE:
return new PhraseParser(environment);
case ADVANCED:
return new AdvancedParser(environment);
case WEB:
return new WebParser(environment);
case PROGRAMMATIC:
return new ProgrammaticParser();
case YQL:
return new YqlParser(environment);
case SELECT:
return new SelectParser(environment);
case WEAKAND:
return new AllParser(environment, true);
case TOKENIZE:
return new TokenizeParser(environment);
default:
throw new UnsupportedOperationException(type.toString());
}
}
}
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