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package org.apache.lucene.search.highlight;
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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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* http://www.apache.org/licenses/LICENSE-2.0
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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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import java.util.ArrayList;
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import java.util.Iterator;
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import java.util.List;
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* Lightweight class to hold term, weight, and positions used for scoring this
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public class WeightedSpanTerm extends WeightedTerm{
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boolean positionSensitive;
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private List<PositionSpan> positionSpans = new ArrayList<PositionSpan>();
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public WeightedSpanTerm(float weight, String term) {
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this.positionSpans = new ArrayList<PositionSpan>();
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* @param positionSensitive
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public WeightedSpanTerm(float weight, String term, boolean positionSensitive) {
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this.positionSensitive = positionSensitive;
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* Checks to see if this term is valid at <code>position</code>.
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* to check against valid term positions
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* @return true iff this term is a hit at this position
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public boolean checkPosition(int position) {
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// There would probably be a slight speed improvement if PositionSpans
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// where kept in some sort of priority queue - that way this method
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// bail early without checking each PositionSpan.
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Iterator<PositionSpan> positionSpanIt = positionSpans.iterator();
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while (positionSpanIt.hasNext()) {
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PositionSpan posSpan = positionSpanIt.next();
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if (((position >= posSpan.start) && (position <= posSpan.end))) {
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public void addPositionSpans(List<PositionSpan> positionSpans) {
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this.positionSpans.addAll(positionSpans);
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public boolean isPositionSensitive() {
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return positionSensitive;
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public void setPositionSensitive(boolean positionSensitive) {
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this.positionSensitive = positionSensitive;
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public List<PositionSpan> getPositionSpans() {
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// Utility class to store a Span
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public PositionSpan(int start, int end) {