iotdb-core/datanode/src/main/java/org/apache/iotdb/db/queryengine/transformation/api/LayerPointReader.java

/*
 * 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.iotdb.db.queryengine.transformation.api;

import org.apache.iotdb.db.exception.query.QueryProcessException;
import org.apache.iotdb.tsfile.file.metadata.enums.TSDataType;
import org.apache.iotdb.tsfile.utils.Binary;

import java.io.IOException;

public interface LayerPointReader extends YieldableReader {

  boolean isConstantPointReader();

  boolean next() throws QueryProcessException, IOException;

  void readyForNext();

  TSDataType getDataType();

  long currentTime() throws IOException;

  int currentInt() throws IOException;

  long currentLong() throws IOException;

  float currentFloat() throws IOException;

  double currentDouble() throws IOException;

  boolean currentBoolean() throws IOException;

  boolean isCurrentNull() throws IOException;

  Binary currentBinary() throws IOException;
}