| /* |
| * 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.drill.metastore.operate; |
| |
| import org.apache.drill.metastore.expressions.FilterExpression; |
| import org.apache.drill.metastore.metadata.MetadataType; |
| import org.apache.drill.shaded.guava.com.google.common.collect.Sets; |
| |
| import java.util.HashSet; |
| import java.util.Set; |
| import java.util.StringJoiner; |
| |
| /** |
| * Delete operation holder, it includes filter by which Metastore data will be deleted |
| * and set of metadata types to which filter will be applied. |
| * |
| * Note: providing at least one metadata type is required. |
| * If delete operation should be applied to all metadata types, |
| * {@link MetadataType#ALL} can be indicated. |
| */ |
| public class Delete { |
| |
| private final Set<MetadataType> metadataTypes; |
| private final FilterExpression filter; |
| |
| private Delete(Builder builder) { |
| this.metadataTypes = builder.metadataTypes; |
| this.filter = builder.filter; |
| } |
| |
| public static Builder builder() { |
| return new Builder(); |
| } |
| |
| public Set<MetadataType> metadataTypes() { |
| return metadataTypes; |
| } |
| |
| public FilterExpression filter() { |
| return filter; |
| } |
| |
| @Override |
| public String toString() { |
| return new StringJoiner(", ", Delete.class.getSimpleName() + "[", "]") |
| .add("metadataTypes=" + metadataTypes) |
| .add("filter=" + filter) |
| .toString(); |
| } |
| |
| public static class Builder { |
| private final Set<MetadataType> metadataTypes = new HashSet<>(); |
| private FilterExpression filter; |
| |
| public Builder metadataTypes(Set<MetadataType> metadataTypes) { |
| this.metadataTypes.addAll(metadataTypes); |
| return this; |
| } |
| |
| public Builder metadataType(MetadataType... metadataTypes) { |
| return metadataTypes(Sets.newHashSet(metadataTypes)); |
| } |
| |
| public Builder filter(FilterExpression filter) { |
| this.filter = filter; |
| return this; |
| } |
| |
| public Delete build() { |
| return new Delete(this); |
| } |
| } |
| } |