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add documents as block #88

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add documents as block #88

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27 changes: 23 additions & 4 deletions luwak/src/main/java/uk/co/flax/luwak/DocumentBatch.java
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Original file line number Diff line number Diff line change
Expand Up @@ -20,6 +20,7 @@
import java.io.IOException;
import java.util.*;

import org.apache.lucene.document.Document;
import org.apache.lucene.index.*;
import org.apache.lucene.index.memory.MemoryIndex;
import org.apache.lucene.search.IndexSearcher;
Expand Down Expand Up @@ -50,7 +51,8 @@ public abstract class DocumentBatch implements Closeable, Iterable<InputDocument
/** The {@link Similarity} to be used for scoring (if scoring is required) */
protected final Similarity similarity;

/** A list of {@link InputDocument} objects to match */
/** A list of {@link InputDocument} objects to match. These documents will be added as a block in the order
* provided. */
protected final List<InputDocument> documents = new ArrayList<>();

/**
Expand Down Expand Up @@ -182,9 +184,26 @@ public LeafReader getIndexReader() throws IOException {

private LeafReader build(IndexWriter writer) throws IOException {

for (InputDocument doc : documents) {
writer.addDocument(doc.getDocument());
}
final Iterator<InputDocument> it = documents.iterator();

Iterable<? extends Iterable<? extends IndexableField>> wrapped = new Iterable<Iterable<? extends IndexableField>>() {
@Override
public Iterator<Iterable<? extends IndexableField>> iterator() {
return new Iterator<Iterable<? extends IndexableField>>() {
@Override
public boolean hasNext() {
return it.hasNext();
}

@Override
public Iterable<? extends IndexableField> next() {
return it.next().getDocument();
}
};
}
};

writer.addDocuments(wrapped);

writer.commit();
LeafReader reader = SlowCompositeReaderWrapper.wrap(DirectoryReader.open(directory));
Expand Down