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package org.apache.lucene.index;
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* Copyright 2007 The Apache Software Foundation
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* 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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* For each Field, store a sorted collection of {@link TermVectorEntry}s
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* This is not thread-safe.
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public class FieldSortedTermVectorMapper extends TermVectorMapper{
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private Map<String,SortedSet<TermVectorEntry>> fieldToTerms = new HashMap<String,SortedSet<TermVectorEntry>>();
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private SortedSet<TermVectorEntry> currentSet;
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private String currentField;
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private Comparator<TermVectorEntry> comparator;
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* @param comparator A Comparator for sorting {@link TermVectorEntry}s
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public FieldSortedTermVectorMapper(Comparator<TermVectorEntry> comparator) {
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this(false, false, comparator);
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public FieldSortedTermVectorMapper(boolean ignoringPositions, boolean ignoringOffsets, Comparator<TermVectorEntry> comparator) {
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super(ignoringPositions, ignoringOffsets);
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this.comparator = comparator;
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public void map(String term, int frequency, TermVectorOffsetInfo[] offsets, int[] positions) {
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TermVectorEntry entry = new TermVectorEntry(currentField, term, frequency, offsets, positions);
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currentSet.add(entry);
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public void setExpectations(String field, int numTerms, boolean storeOffsets, boolean storePositions) {
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currentSet = new TreeSet<TermVectorEntry>(comparator);
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fieldToTerms.put(field, currentSet);
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* Get the mapping between fields and terms, sorted by the comparator
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* @return A map between field names and {@link java.util.SortedSet}s per field. SortedSet entries are {@link TermVectorEntry}
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public Map<String,SortedSet<TermVectorEntry>> getFieldToTerms() {
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public Comparator<TermVectorEntry> getComparator() {