WildcardQueryExpression.java

/**
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 * <p/>
 * http://www.apache.org/licenses/LICENSE-2.0
 * <p/>
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.apache.atlas.catalog.query;

import org.apache.atlas.catalog.definition.ResourceDefinition;
import org.apache.lucene.search.WildcardQuery;

import java.util.regex.Pattern;

/**
 * Query expression which evaluates values with wildcards.
 * This differs from PrefixQueryExpression which handles expressions which end with a wildcard.
 */
public class WildcardQueryExpression extends BaseQueryExpression {

    public WildcardQueryExpression(WildcardQuery query, ResourceDefinition resourceDefinition) {
        super(query.getTerm().field(), query.getTerm().text(), resourceDefinition);
    }

    @Override
    public boolean evaluate(Object value) {
        // replace '*' with ".*"
        // replace '?' with '.'
        String regex = getExpectedValue().replaceAll("\\*", ".*").replaceAll("\\?", ".");
        return Pattern.compile(regex).matcher(String.valueOf(value)).matches();
    }
}