| /* |
| * 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.codecs.blocktreeords; |
| |
| |
| import java.io.IOException; |
| import java.util.Collection; |
| import java.util.Collections; |
| |
| import org.apache.lucene.codecs.blocktreeords.FSTOrdsOutputs.Output; |
| import org.apache.lucene.index.FieldInfo; |
| import org.apache.lucene.index.IndexOptions; |
| import org.apache.lucene.index.Terms; |
| import org.apache.lucene.index.TermsEnum; |
| import org.apache.lucene.store.ByteArrayDataInput; |
| import org.apache.lucene.store.IndexInput; |
| import org.apache.lucene.util.Accountable; |
| import org.apache.lucene.util.Accountables; |
| import org.apache.lucene.util.BytesRef; |
| import org.apache.lucene.util.automaton.CompiledAutomaton; |
| import org.apache.lucene.util.fst.FST; |
| |
| /** BlockTree's implementation of {@link Terms}. */ |
| final class OrdsFieldReader extends Terms implements Accountable { |
| final long numTerms; |
| final FieldInfo fieldInfo; |
| final long sumTotalTermFreq; |
| final long sumDocFreq; |
| final int docCount; |
| final long indexStartFP; |
| final long rootBlockFP; |
| final Output rootCode; |
| final BytesRef minTerm; |
| final BytesRef maxTerm; |
| final OrdsBlockTreeTermsReader parent; |
| |
| final FST<Output> index; |
| //private boolean DEBUG; |
| |
| OrdsFieldReader(OrdsBlockTreeTermsReader parent, FieldInfo fieldInfo, long numTerms, |
| Output rootCode, long sumTotalTermFreq, long sumDocFreq, int docCount, |
| long indexStartFP, IndexInput indexIn, BytesRef minTerm, BytesRef maxTerm) throws IOException { |
| assert numTerms > 0; |
| this.fieldInfo = fieldInfo; |
| //DEBUG = BlockTreeTermsReader.DEBUG && fieldInfo.name.equals("id"); |
| this.parent = parent; |
| this.numTerms = numTerms; |
| this.sumTotalTermFreq = sumTotalTermFreq; |
| this.sumDocFreq = sumDocFreq; |
| this.docCount = docCount; |
| this.indexStartFP = indexStartFP; |
| this.rootCode = rootCode; |
| this.minTerm = minTerm; |
| this.maxTerm = maxTerm; |
| // if (DEBUG) { |
| // System.out.println("BTTR: seg=" + segment + " field=" + fieldInfo.name + " rootBlockCode=" + rootCode + " divisor=" + indexDivisor); |
| // } |
| |
| rootBlockFP = (new ByteArrayDataInput(rootCode.bytes.bytes, |
| rootCode.bytes.offset, |
| rootCode.bytes.length)).readVLong() >>> OrdsBlockTreeTermsWriter.OUTPUT_FLAGS_NUM_BITS; |
| |
| if (indexIn != null) { |
| final IndexInput clone = indexIn.clone(); |
| //System.out.println("start=" + indexStartFP + " field=" + fieldInfo.name); |
| clone.seek(indexStartFP); |
| index = new FST<>(clone, clone, OrdsBlockTreeTermsWriter.FST_OUTPUTS); |
| |
| /* |
| if (true) { |
| final String dotFileName = "/tmp/" + parent.segment + "_" + fieldInfo.name + ".dot"; |
| Writer w = new OutputStreamWriter(new FileOutputStream(dotFileName)); |
| Util.toDot(index, w, false, false); |
| System.out.println("FST INDEX: SAVED to " + dotFileName); |
| w.close(); |
| } |
| */ |
| } else { |
| index = null; |
| } |
| } |
| |
| @Override |
| public BytesRef getMin() throws IOException { |
| if (minTerm == null) { |
| // Older index that didn't store min/maxTerm |
| return super.getMin(); |
| } else { |
| return minTerm; |
| } |
| } |
| |
| @Override |
| public BytesRef getMax() throws IOException { |
| if (maxTerm == null) { |
| // Older index that didn't store min/maxTerm |
| return super.getMax(); |
| } else { |
| return maxTerm; |
| } |
| } |
| |
| @Override |
| public boolean hasFreqs() { |
| return fieldInfo.getIndexOptions().compareTo(IndexOptions.DOCS_AND_FREQS) >= 0; |
| } |
| |
| @Override |
| public boolean hasOffsets() { |
| return fieldInfo.getIndexOptions().compareTo(IndexOptions.DOCS_AND_FREQS_AND_POSITIONS_AND_OFFSETS) >= 0; |
| } |
| |
| @Override |
| public boolean hasPositions() { |
| return fieldInfo.getIndexOptions().compareTo(IndexOptions.DOCS_AND_FREQS_AND_POSITIONS) >= 0; |
| } |
| |
| @Override |
| public boolean hasPayloads() { |
| return fieldInfo.hasPayloads(); |
| } |
| |
| @Override |
| public TermsEnum iterator() throws IOException { |
| return new OrdsSegmentTermsEnum(this); |
| } |
| |
| @Override |
| public long size() { |
| return numTerms; |
| } |
| |
| @Override |
| public long getSumTotalTermFreq() { |
| return sumTotalTermFreq; |
| } |
| |
| @Override |
| public long getSumDocFreq() { |
| return sumDocFreq; |
| } |
| |
| @Override |
| public int getDocCount() { |
| return docCount; |
| } |
| |
| @Override |
| public TermsEnum intersect(CompiledAutomaton compiled, BytesRef startTerm) throws IOException { |
| if (compiled.type != CompiledAutomaton.AUTOMATON_TYPE.NORMAL) { |
| throw new IllegalArgumentException("please use CompiledAutomaton.getTermsEnum instead"); |
| } |
| return new OrdsIntersectTermsEnum(this, compiled, startTerm); |
| } |
| |
| @Override |
| public long ramBytesUsed() { |
| return ((index!=null)? index.ramBytesUsed() : 0); |
| } |
| |
| @Override |
| public Collection<Accountable> getChildResources() { |
| if (index == null) { |
| return Collections.emptyList(); |
| } else { |
| return Collections.singleton(Accountables.namedAccountable("term index", index)); |
| } |
| } |
| |
| @Override |
| public String toString() { |
| return "OrdsBlockTreeTerms(terms=" + numTerms + ",postings=" + sumDocFreq + ",positions=" + sumTotalTermFreq + ",docs=" + docCount + ")"; |
| } |
| } |