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5012893c1d
This change renames directories in preparation for the great package rename. The repository is now in a broken state because the code itself hasn't been updated. However this should ensure that git correctly preserves history for each file.
100 lines
4.4 KiB
Java
100 lines
4.4 KiB
Java
// Copyright 2016 The Domain Registry Authors. All Rights Reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package com.google.domain.registry.mapreduce.inputs;
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import static com.google.common.base.Preconditions.checkArgument;
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import static com.google.common.base.Predicates.not;
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import static com.google.common.collect.Iterables.all;
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import static com.google.common.collect.Lists.asList;
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import static com.google.domain.registry.util.TypeUtils.hasAnnotation;
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import com.google.appengine.tools.mapreduce.Input;
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import com.google.common.collect.ImmutableSet;
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import com.google.domain.registry.model.EppResource;
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import com.google.domain.registry.model.ImmutableObject;
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import com.google.domain.registry.model.index.EppResourceIndex;
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import com.googlecode.objectify.Key;
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import com.googlecode.objectify.annotation.EntitySubclass;
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/**
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* Mapreduce helpers for {@link EppResource} keys and objects.
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*
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* <p>The inputs provided by this class are not deletion-aware and do not project the resources
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* forward in time. That is the responsibility of mappers that use these inputs.
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*/
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public final class EppResourceInputs {
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private EppResourceInputs() {}
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/** Returns a MapReduce {@link Input} that loads all {@link EppResourceIndex} objects. */
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public static <R extends EppResource> Input<EppResourceIndex> createIndexInput() {
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return new EppResourceIndexInput();
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}
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/**
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* Returns a MapReduce {@link Input} that loads all {@link EppResource} objects of a given type,
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* including deleted resources.
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*
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* <p>Note: Do not concatenate multiple EntityInputs together (this is inefficient as it iterates
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* through all buckets multiple times). Specify the types in a single input, or load all types by
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* specifying {@link EppResource} as the class.
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*/
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@SafeVarargs
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public static <R extends EppResource> Input<R> createEntityInput(
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Class<? extends R> resourceClass,
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Class<? extends R>... moreResourceClasses) {
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return new EppResourceEntityInput<R>(
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ImmutableSet.copyOf(asList(resourceClass, moreResourceClasses)));
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}
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/**
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* Returns a MapReduce {@link Input} that loads all {@link ImmutableObject} objects of a given
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* type, including deleted resources, that are child entities of all {@link EppResource} objects
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* of a given type.
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*
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* <p>Note: Do not concatenate multiple EntityInputs together (this is inefficient as it iterates
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* through all buckets multiple times). Specify the types in a single input, or load all types by
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* specifying {@link EppResource} and/or {@link ImmutableObject} as the class.
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*/
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public static <R extends EppResource, I extends ImmutableObject> Input<I> createChildEntityInput(
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ImmutableSet<Class<? extends R>> parentClasses,
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ImmutableSet<Class<? extends I>> childClasses) {
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checkArgument(!parentClasses.isEmpty(), "Must provide at least one parent type.");
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checkArgument(!childClasses.isEmpty(), "Must provide at least one child type.");
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return new ChildEntityInput<>(parentClasses, childClasses);
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}
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/**
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* Returns a MapReduce {@link Input} that loads keys to all {@link EppResource} objects of a given
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* type, including deleted resources.
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*
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* <p>Note: Do not concatenate multiple KeyInputs together (this is inefficient as it iterates
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* through all buckets multiple times). Specify the types in a single input, or load all types by
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* specifying {@link EppResource} as the class.
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*/
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@SafeVarargs
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public static <R extends EppResource> Input<Key<R>> createKeyInput(
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Class<? extends R> resourceClass,
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Class<? extends R>... moreResourceClasses) {
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ImmutableSet<Class<? extends R>> resourceClasses =
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ImmutableSet.copyOf(asList(resourceClass, moreResourceClasses));
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checkArgument(
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all(resourceClasses, not(hasAnnotation(EntitySubclass.class))),
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"Mapping over keys requires a non-polymorphic Entity");
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return new EppResourceKeyInput<>(resourceClasses);
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}
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}
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