hivemall.hcatalog.data.transfer.ReadEntity Maven / Gradle / Ivy

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/**
 * 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.hive.hcatalog.data.transfer;

import java.util.Map;

public class ReadEntity extends EntityBase.Entity {

  private String filterString;

  /**
   * Don't instantiate {@link ReadEntity} directly. Use,
   * {@link ReadEntity.Builder} instead.
   *
   */
  private ReadEntity() {
    // Not allowed
  }

  private ReadEntity(Builder builder) {

    this.region = builder.region;
    this.dbName = builder.dbName;
    this.tableName = builder.tableName;
    this.partitionKVs = builder.partitionKVs;
    this.filterString = builder.filterString;
  }

  public String getFilterString() {
    return this.filterString;
  }

  /**
   * This class should be used to build {@link ReadEntity}. It follows builder
   * pattern, letting you build your {@link ReadEntity} with whatever level of
   * detail you want.
   *
   */
  public static class Builder extends EntityBase {

    private String filterString;

    public Builder withRegion(final String region) {
      this.region = region;
      return this;
    }

    public Builder withDatabase(final String dbName) {
      this.dbName = dbName;
      return this;
    }

    public Builder withTable(final String tblName) {
      this.tableName = tblName;
      return this;
    }

    public Builder withPartition(final Map partKVs) {
      this.partitionKVs = partKVs;
      return this;
    }

    public Builder withFilter(String filterString) {
      this.filterString = filterString;
      return this;
    }

    public ReadEntity build() {
      return new ReadEntity(this);
    }
  }
}