server/src/main/java/org/apache/iotdb/db/utils/IExpressionDeserializeUtil.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.utils;

import org.apache.iotdb.commons.path.PathDeserializeUtil;
import org.apache.iotdb.tsfile.read.expression.ExpressionType;
import org.apache.iotdb.tsfile.read.expression.IExpression;
import org.apache.iotdb.tsfile.read.expression.impl.BinaryExpression;
import org.apache.iotdb.tsfile.read.expression.impl.GlobalTimeExpression;
import org.apache.iotdb.tsfile.read.expression.impl.SingleSeriesExpression;
import org.apache.iotdb.tsfile.read.filter.factory.FilterFactory;

import java.nio.ByteBuffer;

public class IExpressionDeserializeUtil {

  public static IExpression deserialize(ByteBuffer byteBuffer) {
    ExpressionType expressionType = ExpressionType.values()[byteBuffer.get()];
    switch (expressionType) {
      case OR:
        return BinaryExpression.or(deserialize(byteBuffer), deserialize(byteBuffer));
      case AND:
        return BinaryExpression.and(deserialize(byteBuffer), deserialize(byteBuffer));
      case SERIES:
        return new SingleSeriesExpression(
            PathDeserializeUtil.deserialize(byteBuffer), FilterFactory.deserialize(byteBuffer));
      case GLOBAL_TIME:
        return GlobalTimeExpression.deserialize(byteBuffer);
      case TRUE:
        return null;
      default:
        throw new UnsupportedOperationException("unSupport expressionType");
    }
  }
}