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LatLonPoint no longer needs to fork core's PointRangeQuery
This commit is contained in:
Mike McCandless
parent
360d9c40da
commit
a60518c567
@ -34,6 +34,7 @@ import org.apache.lucene.search.FieldDoc;
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import org.apache.lucene.search.IndexSearcher;
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import org.apache.lucene.search.MatchAllDocsQuery;
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import org.apache.lucene.search.MatchNoDocsQuery;
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import org.apache.lucene.search.PointRangeQuery;
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import org.apache.lucene.search.Query;
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import org.apache.lucene.search.ScoreDoc;
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import org.apache.lucene.search.TopFieldDocs;
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@ -228,7 +229,7 @@ public class LatLonPoint extends Field {
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}
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private static Query newBoxInternal(String field, byte[] min, byte[] max) {
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return new LatLonPointBoxQuery(field, min, max, 2) {
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return new PointRangeQuery(field, min, max, 2) {
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@Override
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protected String toString(int dimension, byte[] value) {
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if (dimension == 0) {
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@ -1,279 +0,0 @@
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/*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership.
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* The ASF licenses this file to You under the Apache License, Version 2.0
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* (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package org.apache.lucene.document;
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import java.io.IOException;
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import java.util.Arrays;
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import java.util.Objects;
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import org.apache.lucene.index.PointValues;
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import org.apache.lucene.index.PointValues.IntersectVisitor;
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import org.apache.lucene.index.PointValues.Relation;
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import org.apache.lucene.search.ConstantScoreScorer;
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import org.apache.lucene.search.ConstantScoreWeight;
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import org.apache.lucene.search.DocIdSetIterator;
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import org.apache.lucene.search.IndexSearcher;
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import org.apache.lucene.search.PointRangeQuery;
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import org.apache.lucene.search.Query;
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import org.apache.lucene.search.Scorer;
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import org.apache.lucene.search.Weight;
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import org.apache.lucene.index.FieldInfo;
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import org.apache.lucene.index.LeafReader;
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import org.apache.lucene.index.LeafReaderContext;
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import org.apache.lucene.util.DocIdSetBuilder;
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import org.apache.lucene.util.StringHelper;
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/**
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* Fast version of {@link PointRangeQuery}. It is fast for actual range queries!
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* @lucene.experimental
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*/
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abstract class LatLonPointBoxQuery extends Query {
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final String field;
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final int numDims;
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final int bytesPerDim;
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final byte[] lowerPoint;
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final byte[] upperPoint;
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/**
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* Expert: create a multidimensional range query for point values.
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*
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* @param field field name. must not be {@code null}.
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* @param lowerPoint lower portion of the range (inclusive).
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* @param upperPoint upper portion of the range (inclusive).
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* @param numDims number of dimensions.
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* @throws IllegalArgumentException if {@code field} is null, or if {@code lowerValue.length != upperValue.length}
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*/
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protected LatLonPointBoxQuery(String field, byte[] lowerPoint, byte[] upperPoint, int numDims) {
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checkArgs(field, lowerPoint, upperPoint);
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this.field = field;
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if (numDims <= 0) {
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throw new IllegalArgumentException("numDims must be positive, got " + numDims);
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}
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if (lowerPoint.length == 0) {
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throw new IllegalArgumentException("lowerPoint has length of zero");
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}
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if (lowerPoint.length % numDims != 0) {
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throw new IllegalArgumentException("lowerPoint is not a fixed multiple of numDims");
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}
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if (lowerPoint.length != upperPoint.length) {
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throw new IllegalArgumentException("lowerPoint has length=" + lowerPoint.length + " but upperPoint has different length=" + upperPoint.length);
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}
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this.numDims = numDims;
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this.bytesPerDim = lowerPoint.length / numDims;
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this.lowerPoint = lowerPoint;
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this.upperPoint = upperPoint;
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}
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/**
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* Check preconditions for all factory methods
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* @throws IllegalArgumentException if {@code field}, {@code lowerPoint} or {@code upperPoint} are null.
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*/
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public static void checkArgs(String field, Object lowerPoint, Object upperPoint) {
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if (field == null) {
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throw new IllegalArgumentException("field must not be null");
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}
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if (lowerPoint == null) {
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throw new IllegalArgumentException("lowerPoint must not be null");
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}
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if (upperPoint == null) {
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throw new IllegalArgumentException("upperPoint must not be null");
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}
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}
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@Override
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public final Weight createWeight(IndexSearcher searcher, boolean needsScores) throws IOException {
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// We don't use RandomAccessWeight here: it's no good to approximate with "match all docs".
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// This is an inverted structure and should be used in the first pass:
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return new ConstantScoreWeight(this) {
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private DocIdSetIterator buildMatchingIterator(LeafReader reader, PointValues values) throws IOException {
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DocIdSetBuilder result = new DocIdSetBuilder(reader.maxDoc(), values, field);
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values.intersect(field,
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new IntersectVisitor() {
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DocIdSetBuilder.BulkAdder adder;
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@Override
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public void grow(int count) {
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adder = result.grow(count);
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}
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@Override
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public void visit(int docID) {
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adder.add(docID);
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}
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@Override
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public void visit(int docID, byte[] packedValue) {
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for(int dim=0;dim<numDims;dim++) {
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int offset = dim*bytesPerDim;
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if (StringHelper.compare(bytesPerDim, packedValue, offset, lowerPoint, offset) < 0) {
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// Doc's value is too low, in this dimension
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return;
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}
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if (StringHelper.compare(bytesPerDim, packedValue, offset, upperPoint, offset) > 0) {
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// Doc's value is too high, in this dimension
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return;
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}
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}
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// Doc is in-bounds
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adder.add(docID);
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}
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@Override
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public Relation compare(byte[] minPackedValue, byte[] maxPackedValue) {
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boolean crosses = false;
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for(int dim=0;dim<numDims;dim++) {
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int offset = dim*bytesPerDim;
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if (StringHelper.compare(bytesPerDim, minPackedValue, offset, upperPoint, offset) > 0 ||
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StringHelper.compare(bytesPerDim, maxPackedValue, offset, lowerPoint, offset) < 0) {
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return Relation.CELL_OUTSIDE_QUERY;
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}
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crosses |= StringHelper.compare(bytesPerDim, minPackedValue, offset, lowerPoint, offset) < 0 ||
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StringHelper.compare(bytesPerDim, maxPackedValue, offset, upperPoint, offset) > 0;
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}
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if (crosses) {
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return Relation.CELL_CROSSES_QUERY;
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} else {
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return Relation.CELL_INSIDE_QUERY;
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}
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}
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});
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return result.build().iterator();
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}
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@Override
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public Scorer scorer(LeafReaderContext context) throws IOException {
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LeafReader reader = context.reader();
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PointValues values = reader.getPointValues();
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if (values == null) {
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// No docs in this segment indexed any points
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return null;
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}
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FieldInfo fieldInfo = reader.getFieldInfos().fieldInfo(field);
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if (fieldInfo == null) {
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// No docs in this segment indexed this field at all
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return null;
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}
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if (fieldInfo.getPointDimensionCount() != numDims) {
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throw new IllegalArgumentException("field=\"" + field + "\" was indexed with numDims=" + fieldInfo.getPointDimensionCount() + " but this query has numDims=" + numDims);
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}
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if (bytesPerDim != fieldInfo.getPointNumBytes()) {
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throw new IllegalArgumentException("field=\"" + field + "\" was indexed with bytesPerDim=" + fieldInfo.getPointNumBytes() + " but this query has bytesPerDim=" + bytesPerDim);
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}
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boolean allDocsMatch;
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if (values.getDocCount(field) == reader.maxDoc()) {
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final byte[] fieldPackedLower = values.getMinPackedValue(field);
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final byte[] fieldPackedUpper = values.getMaxPackedValue(field);
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allDocsMatch = true;
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for (int i = 0; i < numDims; ++i) {
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int offset = i * bytesPerDim;
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if (StringHelper.compare(bytesPerDim, lowerPoint, offset, fieldPackedLower, offset) > 0
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|| StringHelper.compare(bytesPerDim, upperPoint, offset, fieldPackedUpper, offset) < 0) {
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allDocsMatch = false;
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break;
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}
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}
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} else {
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allDocsMatch = false;
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}
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DocIdSetIterator iterator;
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if (allDocsMatch) {
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// all docs have a value and all points are within bounds, so everything matches
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iterator = DocIdSetIterator.all(reader.maxDoc());
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} else {
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iterator = buildMatchingIterator(reader, values);
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}
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return new ConstantScoreScorer(this, score(), iterator);
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}
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};
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}
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@Override
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public final int hashCode() {
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int hash = classHash();
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hash = 31 * hash + field.hashCode();
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hash = 31 * hash + Arrays.hashCode(lowerPoint);
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hash = 31 * hash + Arrays.hashCode(upperPoint);
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hash = 31 * hash + numDims;
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hash = 31 * hash + Objects.hashCode(bytesPerDim);
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return hash;
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}
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@Override
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public final boolean equals(Object other) {
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return sameClassAs(other) &&
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equalsTo(getClass().cast(other));
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}
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private boolean equalsTo(LatLonPointBoxQuery other) {
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return field.equals(other.field) &&
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numDims == other.numDims &&
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bytesPerDim == other.bytesPerDim &&
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Arrays.equals(lowerPoint, other.lowerPoint) &&
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Arrays.equals(upperPoint, other.upperPoint);
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}
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@Override
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public final String toString(String field) {
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final StringBuilder sb = new StringBuilder();
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if (this.field.equals(field) == false) {
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sb.append(this.field);
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sb.append(':');
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}
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// print ourselves as "range per dimension"
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for (int i = 0; i < numDims; i++) {
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if (i > 0) {
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sb.append(',');
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}
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int startOffset = bytesPerDim * i;
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sb.append('[');
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sb.append(toString(i, Arrays.copyOfRange(lowerPoint, startOffset, startOffset + bytesPerDim)));
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sb.append(" TO ");
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sb.append(toString(i, Arrays.copyOfRange(upperPoint, startOffset, startOffset + bytesPerDim)));
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sb.append(']');
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}
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return sb.toString();
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}
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/**
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* Returns a string of a single value in a human-readable format for debugging.
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* This is used by {@link #toString()}.
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*
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* @param dimension dimension of the particular value
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* @param value single value, never null
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* @return human readable value for debugging
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*/
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protected abstract String toString(int dimension, byte[] value);
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}
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