| /* |
| * 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.streampipes.pe.examples.jvm.staticproperty; |
| |
| import org.apache.streampipes.model.DataProcessorType; |
| import org.apache.streampipes.model.graph.DataProcessorDescription; |
| import org.apache.streampipes.model.graph.DataProcessorInvocation; |
| import org.apache.streampipes.model.schema.PropertyScope; |
| import org.apache.streampipes.pe.examples.jvm.base.DummyEngine; |
| import org.apache.streampipes.pe.examples.jvm.base.DummyParameters; |
| import org.apache.streampipes.sdk.builder.ProcessingElementBuilder; |
| import org.apache.streampipes.sdk.builder.StreamRequirementsBuilder; |
| import org.apache.streampipes.sdk.extractor.ProcessingElementParameterExtractor; |
| import org.apache.streampipes.sdk.helpers.EpRequirements; |
| import org.apache.streampipes.sdk.helpers.Labels; |
| import org.apache.streampipes.sdk.helpers.OutputStrategies; |
| import org.apache.streampipes.sdk.utils.Assets; |
| import org.apache.streampipes.wrapper.standalone.ConfiguredEventProcessor; |
| import org.apache.streampipes.wrapper.standalone.declarer.StandaloneEventProcessingDeclarer; |
| |
| import java.util.List; |
| |
| public class TwoStreamsMappingExample extends StandaloneEventProcessingDeclarer<DummyParameters> { |
| |
| private static final String KEY_STREAM_1 = "stream-1-key"; |
| private static final String PROPERTIES_STREAM_1 = "stream-1-properties"; |
| private static final String KEY_STREAM_2 = "stream-2-key"; |
| private static final String PROPERTIES_STREAM_2 = "stream-2-properties"; |
| |
| private static final String ID = "org.apache.streampipes.examples.staticproperty.twostreamsmapping"; |
| @Override |
| public DataProcessorDescription declareModel() { |
| return ProcessingElementBuilder.create(ID, "Two Streams", "") |
| .withAssets(Assets.DOCUMENTATION, Assets.ICON) |
| .category(DataProcessorType.ALGORITHM) |
| .requiredStream(StreamRequirementsBuilder |
| .create() |
| .requiredPropertyWithNaryMapping( |
| EpRequirements.numberReq(), |
| Labels.from(PROPERTIES_STREAM_1, "S1 Properties", ""), |
| PropertyScope.NONE) |
| .requiredPropertyWithUnaryMapping(EpRequirements.numberReq(), |
| Labels.from(KEY_STREAM_1, "S1 Key", ""), PropertyScope.NONE) |
| .build()) |
| .requiredStream(StreamRequirementsBuilder |
| .create() |
| .requiredPropertyWithNaryMapping(EpRequirements.numberReq(), |
| Labels.from(PROPERTIES_STREAM_2, "S2 Properties", ""), |
| PropertyScope.NONE) |
| .requiredPropertyWithUnaryMapping(EpRequirements.numberReq(), |
| Labels.from(KEY_STREAM_2, "S2 Key", ""), |
| PropertyScope.NONE) |
| .build()) |
| .outputStrategy(OutputStrategies.keep()) |
| .build(); |
| |
| } |
| |
| @Override |
| public ConfiguredEventProcessor<DummyParameters> onInvocation(DataProcessorInvocation graph, ProcessingElementParameterExtractor extractor) { |
| |
| List<String> selProps1 = extractor.mappingPropertyValues(PROPERTIES_STREAM_1); |
| List<String> selProps = extractor.mappingPropertyValues(PROPERTIES_STREAM_2); |
| |
| String selKey1 = extractor.mappingPropertyValue(KEY_STREAM_1); |
| String selKey2 = extractor.mappingPropertyValue(KEY_STREAM_2); |
| |
| return new ConfiguredEventProcessor<>(new DummyParameters(graph), DummyEngine::new); |
| } |
| |
| } |