io.hstream.impl.QueryerBuilderImpl Maven / Gradle / Ivy

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package io.hstream.impl;

import static com.google.common.base.Preconditions.*;

import io.hstream.*;
import java.util.List;

public class QueryerBuilderImpl implements QueryerBuilder {

  private final HStreamClient client;
  private final List serverUrls;
  private final ChannelProvider channelProvider;

  private String sql;
  private Observer resultObserver;

  public QueryerBuilderImpl(
      HStreamClient client, List serverUrls, ChannelProvider channelProvider) {
    this.client = client;
    this.serverUrls = serverUrls;
    this.channelProvider = channelProvider;
  }

  @Override
  public QueryerBuilder sql(String sql) {
    this.sql = sql;
    return this;
  }

  @Override
  public QueryerBuilder resultObserver(Observer resultObserver) {
    this.resultObserver = resultObserver;
    return this;
  }

  @Override
  public Queryer build() {
    checkNotNull(sql);
    checkNotNull(resultObserver);
    throw new HStreamDBClientException("unsupported");
  }
}