X-Git-Url: https://git.mdrn.pl/pylucene.git/blobdiff_plain/a2e61f0c04805cfcb8706176758d1283c7e3a55c..aaeed5504b982cf3545252ab528713250aa33eed:/lucene-java-3.4.0/lucene/contrib/spatial/src/java/org/apache/lucene/spatial/geohash/GeoHashDistanceFilter.java?ds=sidebyside diff --git a/lucene-java-3.4.0/lucene/contrib/spatial/src/java/org/apache/lucene/spatial/geohash/GeoHashDistanceFilter.java b/lucene-java-3.4.0/lucene/contrib/spatial/src/java/org/apache/lucene/spatial/geohash/GeoHashDistanceFilter.java deleted file mode 100644 index 4b8d44d..0000000 --- a/lucene-java-3.4.0/lucene/contrib/spatial/src/java/org/apache/lucene/spatial/geohash/GeoHashDistanceFilter.java +++ /dev/null @@ -1,130 +0,0 @@ -/** - * 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.lucene.spatial.geohash; - -import java.io.IOException; - -import org.apache.lucene.index.IndexReader; -import org.apache.lucene.search.FieldCache; -import org.apache.lucene.search.Filter; -import org.apache.lucene.search.DocIdSet; -import org.apache.lucene.search.FilteredDocIdSet; -import org.apache.lucene.spatial.DistanceUtils; -import org.apache.lucene.spatial.tier.DistanceFilter; - - -/**

NOTE: This API is still in - * flux and might change in incompatible ways in the next - * release. - */ - -public class GeoHashDistanceFilter extends DistanceFilter { - - /** - * - */ - private static final long serialVersionUID = 1L; - - private double lat; - private double lng; - private String geoHashField; - - /** - * Provide a distance filter based from a center point with a radius - * in miles - * @param startingFilter - * @param lat - * @param lng - * @param miles - */ - public GeoHashDistanceFilter(Filter startingFilter, double lat, double lng, double miles, String geoHashField) { - super(startingFilter, miles); - this.lat = lat; - this.lng = lng; - this.geoHashField = geoHashField; - } - - @Override - public DocIdSet getDocIdSet(IndexReader reader) throws IOException { - - final String[] geoHashValues = FieldCache.DEFAULT.getStrings(reader, geoHashField); - - final int docBase = nextDocBase; - nextDocBase += reader.maxDoc(); - - return new FilteredDocIdSet(startingFilter.getDocIdSet(reader)) { - @Override - public boolean match(int doc) { - - String geoHash = geoHashValues[doc]; - double[] coords = GeoHashUtils.decode(geoHash); - double x = coords[0]; - double y = coords[1]; - - // round off lat / longs if necessary - // x = DistanceHandler.getPrecision(x, precise); - // y = DistanceHandler.getPrecision(y, precise); - Double cachedDistance = distanceLookupCache.get(geoHash); - double d; - - if (cachedDistance != null) { - d = cachedDistance.doubleValue(); - } else { - d = DistanceUtils.getDistanceMi(lat, lng, x, y); - distanceLookupCache.put(geoHash, d); - } - - if (d < distance){ - distances.put(doc+docBase, d); - return true; - } else { - return false; - } - } - }; - } - - /** Returns true if o is equal to this. */ - @Override - public boolean equals(Object o) { - if (this == o) return true; - if (!(o instanceof GeoHashDistanceFilter)) return false; - GeoHashDistanceFilter other = (GeoHashDistanceFilter) o; - - if (!this.startingFilter.equals(other.startingFilter) || - this.distance != other.distance || - this.lat != other.lat || - this.lng != other.lng || - !this.geoHashField.equals(other.geoHashField) ) { - return false; - } - return true; - } - - /** Returns a hash code value for this object.*/ - @Override - public int hashCode() { - int h = Double.valueOf(distance).hashCode(); - h ^= startingFilter.hashCode(); - h ^= Double.valueOf(lat).hashCode(); - h ^= Double.valueOf(lng).hashCode(); - h ^= geoHashField.hashCode(); - - return h; - } -}