org.graylog.plugins.views.search.elasticsearch.QueryStringParser Maven / Gradle / Ivy
/**
* This file is part of Graylog.
*
* Graylog is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* Graylog is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with Graylog. If not, see .
*/
package org.graylog.plugins.views.search.elasticsearch;
import com.google.common.base.Strings;
import com.google.common.collect.ImmutableSet;
import com.google.common.collect.Sets;
import org.graylog.plugins.views.search.QueryMetadata;
import org.graylog.plugins.views.search.QueryMetadata;
import java.util.Set;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
public class QueryStringParser {
private static final Pattern PLACEHOLDER_PATTERN = Pattern.compile("\\$(.+?)\\$");
public QueryMetadata parse(String queryString) {
if (Strings.isNullOrEmpty(queryString)) {
return QueryMetadata.empty();
}
final Matcher matcher = PLACEHOLDER_PATTERN.matcher(queryString);
Set paramNames = Sets.newHashSet();
while (matcher.find()) {
final String name = matcher.group(1);
paramNames.add(name);
}
return QueryMetadata.builder().usedParameterNames(ImmutableSet.copyOf(paramNames)).build();
}
}