Class MockDataReader

java/core/src/test/org/apache/orc/impl/MockDataReader.java:33–148

import java.util.Set;

public class MockDataReader implements DataReader {
  private final List<MockStripe> stripes = new ArrayList<>();
  private final int numColumns;
  private long offset = 3;
  private MockStripe next;
  private Set<ByteBuffer> outBuffers =
      Collections.newSetFromMap(new IdentityHashMap<>());
  private final InStream.StreamOptions options;

  public MockDataReader(TypeDescription schema) {
    this(schema, new InStream.StreamOptions());
  }

  public MockDataReader(TypeDescription schema,
                        InStream.StreamOptions options) {
    numColumns = schema.getMaximumId() + 1;
    next = new MockStripe(numColumns, stripes.size(), offset);
    this.options = options;
  }

  public MockDataReader addStream(int column, OrcProto.Stream.Kind kind,
                                  ByteBuffer bytes) {
    next.addStream(column, kind, offset, bytes);
    offset += bytes.remaining();
    return this;
  }

  public MockDataReader addEncoding(OrcProto.ColumnEncoding.Kind kind) {
    next.addEncoding(kind);
    return this;
  }

  public MockDataReader addStripeFooter(int rows, String timezone) {
    next.close(rows, timezone);
    stripes.add(next);
    offset += next.getFooterLength();
    next = new MockStripe(numColumns, stripes.size(), offset);
    return this;
  }

  @Override
  public void open() { }

  @Override
  public OrcProto.StripeFooter readStripeFooter(StripeInformation stripe) {
    return stripes.get((int) stripe.getStripeId()).getFooter();
  }

  @Override
  public BufferChunkList readFileData(BufferChunkList list,
                                      boolean doForceDirect) {
    for(BufferChunk buffer = list.get(); buffer != null;
        buffer = (BufferChunk) buffer.next) {
      if (!buffer.hasData()) {
        MockStripe stripe = getStripeByOffset(buffer.getOffset());
        ByteBuffer data = stripe.getData(buffer.getOffset(), buffer.getLength());
        outBuffers.add(data);
        buffer.setChunk(data);