| /* |
| * 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.dimension; |
| |
| import com.fasterxml.jackson.annotation.JsonCreator; |
| import com.fasterxml.jackson.annotation.JsonProperty; |
| import com.google.common.base.Preconditions; |
| import org.apache.druid.query.cache.CacheKeyBuilder; |
| import org.apache.druid.query.extraction.ExtractionFn; |
| import org.apache.druid.segment.DimensionSelector; |
| import org.apache.druid.segment.column.ValueType; |
| |
| /** |
| */ |
| public class ExtractionDimensionSpec implements DimensionSpec |
| { |
| private static final byte CACHE_TYPE_ID = 0x1; |
| |
| private final String dimension; |
| private final ExtractionFn extractionFn; |
| private final String outputName; |
| private final ValueType outputType; |
| |
| @JsonCreator |
| public ExtractionDimensionSpec( |
| @JsonProperty("dimension") String dimension, |
| @JsonProperty("outputName") String outputName, |
| @JsonProperty("outputType") ValueType outputType, |
| @JsonProperty("extractionFn") ExtractionFn extractionFn, |
| // for backwards compatibility |
| @Deprecated @JsonProperty("dimExtractionFn") ExtractionFn dimExtractionFn |
| ) |
| { |
| Preconditions.checkNotNull(dimension, "dimension must not be null"); |
| Preconditions.checkArgument(extractionFn != null || dimExtractionFn != null, "extractionFn must not be null"); |
| |
| this.dimension = dimension; |
| this.extractionFn = extractionFn != null ? extractionFn : dimExtractionFn; |
| this.outputType = outputType == null ? ValueType.STRING : outputType; |
| |
| // Do null check for backwards compatibility |
| this.outputName = outputName == null ? dimension : outputName; |
| } |
| |
| public ExtractionDimensionSpec(String dimension, String outputName, ExtractionFn extractionFn) |
| { |
| this(dimension, outputName, null, extractionFn, null); |
| } |
| |
| public ExtractionDimensionSpec(String dimension, String outputName, ValueType outputType, ExtractionFn extractionFn) |
| { |
| this(dimension, outputName, outputType, extractionFn, null); |
| } |
| |
| @Override |
| @JsonProperty |
| public String getDimension() |
| { |
| return dimension; |
| } |
| |
| @Override |
| @JsonProperty |
| public String getOutputName() |
| { |
| return outputName; |
| } |
| |
| @Override |
| @JsonProperty |
| public ValueType getOutputType() |
| { |
| return outputType; |
| } |
| |
| @Override |
| @JsonProperty |
| public ExtractionFn getExtractionFn() |
| { |
| return extractionFn; |
| } |
| |
| @Override |
| public DimensionSelector decorate(DimensionSelector selector) |
| { |
| return selector; |
| } |
| |
| @Override |
| public boolean mustDecorate() |
| { |
| return false; |
| } |
| |
| @Override |
| public byte[] getCacheKey() |
| { |
| return new CacheKeyBuilder(CACHE_TYPE_ID) |
| .appendString(dimension) |
| .appendCacheable(extractionFn) |
| .appendString(outputType.toString()) |
| .build(); |
| } |
| |
| @Override |
| public boolean preservesOrdering() |
| { |
| return extractionFn.preservesOrdering(); |
| } |
| |
| @Override |
| public DimensionSpec withDimension(String newDimension) |
| { |
| return new ExtractionDimensionSpec(newDimension, outputName, outputType, extractionFn); |
| } |
| |
| @Override |
| public String toString() |
| { |
| return "ExtractionDimensionSpec{" + |
| "dimension='" + dimension + '\'' + |
| ", extractionFn=" + extractionFn + |
| ", outputName='" + outputName + '\'' + |
| ", outputType='" + outputType + '\'' + |
| '}'; |
| } |
| |
| @Override |
| public boolean equals(Object o) |
| { |
| if (this == o) { |
| return true; |
| } |
| if (o == null || getClass() != o.getClass()) { |
| return false; |
| } |
| |
| ExtractionDimensionSpec that = (ExtractionDimensionSpec) o; |
| |
| if (extractionFn != null ? !extractionFn.equals(that.extractionFn) : that.extractionFn != null) { |
| return false; |
| } |
| if (dimension != null ? !dimension.equals(that.dimension) : that.dimension != null) { |
| return false; |
| } |
| if (outputName != null ? !outputName.equals(that.outputName) : that.outputName != null) { |
| return false; |
| } |
| if (outputType != null ? !outputType.equals(that.outputType) : that.outputType != null) { |
| return false; |
| } |
| |
| return true; |
| } |
| |
| @Override |
| public int hashCode() |
| { |
| int result = dimension != null ? dimension.hashCode() : 0; |
| result = 31 * result + (extractionFn != null ? extractionFn.hashCode() : 0); |
| result = 31 * result + (outputName != null ? outputName.hashCode() : 0); |
| result = 31 * result + (outputType != null ? outputType.hashCode() : 0); |
| return result; |
| } |
| } |