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Create a well-defined, cross-language specification for data compute operations

There is a newer version: 0.46.1

package io.substrait.relation;

import io.substrait.expression.Expression;
import io.substrait.type.NamedStruct;
import io.substrait.type.Type;
import java.util.Optional;

public abstract class AbstractReadRel extends ZeroInputRel implements HasExtension {

  public abstract NamedStruct getInitialSchema();

  public abstract Optional getFilter();

  // TODO:
  // public abstract Optional

  @Override
  protected final Type.Struct deriveRecordType() {
    return getInitialSchema().struct();
  }
}