| /** |
| * 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.apex.malhar.lib.dimensions; |
| |
| import java.io.Serializable; |
| |
| import com.datatorrent.lib.appdata.gpo.GPOUtils.IndexSubset; |
| import com.datatorrent.lib.appdata.schemas.FieldsDescriptor; |
| |
| /** |
| * This is a context object used to convert {@link InputEvent}s into aggregates |
| * in {@link IncrementalAggregator}s. |
| * |
| * @since 3.3.0 |
| */ |
| public class DimensionsConversionContext implements Serializable |
| { |
| private static final long serialVersionUID = 201506151157L; |
| |
| public CustomTimeBucketRegistry customTimeBucketRegistry; |
| /** |
| * The schema ID for {@link Aggregate}s emitted by the |
| * {@link org.apache.apex.malhar.lib.dimensions.aggregator.IncrementalAggregator} |
| * s holding this context. |
| */ |
| public int schemaID; |
| /** |
| * The dimensionsDescriptor ID for {@link Aggregate}s emitted by the |
| * {@link org.apache.apex.malhar.lib.dimensions.aggregator.IncrementalAggregator} |
| * s holding this context. |
| */ |
| public int dimensionsDescriptorID; |
| /** |
| * The aggregator ID for {@link Aggregate}s emitted by the |
| * {@link org.apache.apex.malhar.lib.dimensions.aggregator.IncrementalAggregator} |
| * s holding this context. |
| */ |
| public int aggregatorID; |
| /** |
| * The {@link DimensionsDescriptor} corresponding to the given dimension |
| * descriptor id. |
| */ |
| public DimensionsDescriptor dd; |
| /** |
| * The {@link FieldsDescriptor} for the aggregate of the {@link Aggregate}s |
| * emitted by the |
| * {@link org.apache.apex.malhar.lib.dimensions.aggregator.IncrementalAggregator} |
| * s holding this context object. |
| */ |
| public FieldsDescriptor aggregateDescriptor; |
| /** |
| * The {@link FieldsDescriptor} for the key of the {@link Aggregate}s emitted |
| * by the |
| * {@link org.apache.apex.malhar.lib.dimensions.aggregator.IncrementalAggregator} |
| * s holding this context object. |
| */ |
| public FieldsDescriptor keyDescriptor; |
| /** |
| * The index of the timestamp field within the key of {@link InputEvent}s |
| * received by the |
| * {@link org.apache.apex.malhar.lib.dimensions.aggregator.IncrementalAggregator} |
| * s holding this context object. This is -1 if the {@link InputEvent} key has |
| * no timestamp. |
| */ |
| public int inputTimestampIndex; |
| /** |
| * The index of the timestamp field within the key of {@link Aggregate}s |
| * emitted by the |
| * {@link org.apache.apex.malhar.lib.dimensions.aggregator.IncrementalAggregator} |
| * s holding this context object. This is -1 if the {@link Aggregate}'s key |
| * has no timestamp. |
| */ |
| public int outputTimestampIndex; |
| /** |
| * The index of the time bucket field within the key of {@link Aggregate}s |
| * emitted by the |
| * {@link org.apache.apex.malhar.lib.dimensions.aggregator.IncrementalAggregator} |
| * s holding this context object. This is -1 if the {@link Aggregate}'s key |
| * has no timebucket. |
| */ |
| public int outputTimebucketIndex; |
| /** |
| * The {@link IndexSubset} object that is used to extract key values from |
| * {@link InputEvent}s received by this aggregator. |
| */ |
| public IndexSubset indexSubsetKeys; |
| /** |
| * The {@link IndexSubset} object that is used to extract aggregate values |
| * from {@link InputEvent}s received by this aggregator. |
| */ |
| public IndexSubset indexSubsetAggregates; |
| |
| /** |
| * Constructor for creating conversion context. |
| */ |
| public DimensionsConversionContext() |
| { |
| //Do nothing. |
| } |
| } |