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DocumentBatchVisitor.java
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DocumentBatchVisitor.java
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/*
*
* * 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.monitor;
import java.io.Closeable;
import java.io.IOException;
import java.util.List;
import java.util.function.Supplier;
import java.util.stream.Collectors;
import org.apache.lucene.analysis.Analyzer;
import org.apache.lucene.document.Document;
import org.apache.lucene.index.LeafReader;
public class DocumentBatchVisitor implements Closeable, Supplier<LeafReader> {
private final DocumentBatch batch;
private final List<Document> docs;
private DocumentBatchVisitor(DocumentBatch batch, List<Document> docs) {
this.batch = batch;
this.docs = docs;
}
public static DocumentBatchVisitor of(Analyzer analyzer, List<Document> docs) {
return new DocumentBatchVisitor(
DocumentBatch.of(analyzer, docs.toArray(new Document[0])), docs);
}
@Override
public void close() throws IOException {
batch.close();
}
@Override
public LeafReader get() {
return batch.get();
}
public int size() {
return docs.size();
}
@Override
public String toString() {
return docs.stream().map(Document::toString).collect(Collectors.joining(" "));
}
}