| /* |
| * 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 |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * 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.druid.query.search; |
| |
| import com.fasterxml.jackson.annotation.JsonCreator; |
| import com.fasterxml.jackson.annotation.JsonProperty; |
| import com.google.common.base.Preconditions; |
| import org.apache.druid.java.util.common.StringUtils; |
| |
| import javax.annotation.Nullable; |
| import java.nio.ByteBuffer; |
| import java.util.regex.Pattern; |
| |
| |
| public class RegexSearchQuerySpec implements SearchQuerySpec |
| { |
| |
| private static final byte CACHE_TYPE_ID = 0x3; |
| |
| private final String pattern; |
| private final Pattern compiled; |
| |
| @JsonCreator |
| public RegexSearchQuerySpec( |
| @JsonProperty("pattern") String pattern |
| ) |
| { |
| this.pattern = Preconditions.checkNotNull(pattern, "pattern should not be null"); |
| compiled = Pattern.compile(pattern); |
| } |
| |
| @JsonProperty |
| public String getPattern() |
| { |
| return pattern; |
| } |
| |
| @Override |
| public boolean equals(Object o) |
| { |
| if (this == o) { |
| return true; |
| } |
| if (!(o instanceof RegexSearchQuerySpec)) { |
| return false; |
| } |
| |
| RegexSearchQuerySpec that = (RegexSearchQuerySpec) o; |
| |
| return pattern.equals(that.pattern); |
| |
| } |
| |
| @Override |
| public int hashCode() |
| { |
| return pattern.hashCode(); |
| } |
| |
| @Override |
| public boolean accept(@Nullable String dimVal) |
| { |
| if (dimVal == null) { |
| return false; |
| } |
| |
| return compiled.matcher(dimVal).find(); |
| } |
| |
| @Override |
| public byte[] getCacheKey() |
| { |
| byte[] patternBytes = StringUtils.toUtf8(pattern); |
| |
| return ByteBuffer.allocate(1 + patternBytes.length) |
| .put(CACHE_TYPE_ID) |
| .put(patternBytes) |
| .array(); |
| } |
| |
| @Override |
| public String toString() |
| { |
| return "RegexSearchQuerySpec{" + |
| "pattern=" + pattern + "}"; |
| } |
| |
| } |