server/src/main/java/org/apache/iotdb/db/qp/physical/sys/ShowPlan.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.qp.physical.sys;

import org.apache.iotdb.db.metadata.PartialPath;
import org.apache.iotdb.db.qp.logical.Operator.OperatorType;
import org.apache.iotdb.db.qp.physical.PhysicalPlan;

import java.util.Collections;
import java.util.List;

public class ShowPlan extends PhysicalPlan {

  private ShowContentType showContentType;
  protected int limit = 0;
  protected int offset = 0;
  protected PartialPath path;
  private boolean hasLimit;

  public ShowPlan(ShowContentType showContentType) {
    super(true);
    this.showContentType = showContentType;
    setOperatorType(OperatorType.SHOW);
  }

  public ShowPlan(ShowContentType showContentType, PartialPath path) {
    this(showContentType);
    this.path = path;
  }

  public ShowPlan(ShowContentType showContentType, PartialPath path, int limit, int offset) {
    this(showContentType, path);
    this.limit = limit;
    this.offset = offset;
    if (limit == 0) {
      this.hasLimit = false;
    } else {
      this.hasLimit = true;
    }
  }

  @Override
  public List<PartialPath> getPaths() {
    return Collections.emptyList();
  }

  public ShowContentType getShowContentType() {
    return showContentType;
  }

  public PartialPath getPath() {
    return this.path;
  }

  public int getLimit() {
    return limit;
  }

  public void setLimit(int limit) {
    this.limit = limit;
  }

  public int getOffset() {
    return offset;
  }

  public void setOffset(int offset) {
    this.offset = offset;
  }

  public boolean hasLimit() {
    return hasLimit;
  }

  public void setHasLimit(boolean hasLimit) {
    this.hasLimit = hasLimit;
  }

  @Override
  public String toString() {
    return String.format("%s %s", getOperatorType(), showContentType);
  }

  public enum ShowContentType {
    FLUSH_TASK_INFO,
    TTL,
    VERSION,
    TIMESERIES,
    STORAGE_GROUP,
    CHILD_PATH,
    CHILD_NODE,
    DEVICES,
    COUNT_TIMESERIES,
    COUNT_NODE_TIMESERIES,
    COUNT_NODES,
    MERGE_STATUS,
    FUNCTIONS,
    COUNT_DEVICES,
    COUNT_STORAGE_GROUP,
    QUERY_PROCESSLIST,
    TRIGGERS,
    LOCK_INFO,
    CONTINUOUS_QUERY
  }
}