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feat(#3282): Add new rule and rule description for regex rule
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70 changes: 70 additions & 0 deletions
70
...che/streampipes/connect/shared/preprocessing/transform/value/RegexTransformationRule.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,70 @@ | ||
| /* | ||
| * 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. | ||
| * | ||
| */ | ||
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| package org.apache.streampipes.connect.shared.preprocessing.transform.value; | ||
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| import org.apache.streampipes.connect.shared.preprocessing.SupportsNestedTransformationRule; | ||
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| import java.util.List; | ||
| import java.util.Map; | ||
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| public class RegexTransformationRule extends SupportsNestedTransformationRule { | ||
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| private final List<String> eventKeys; | ||
| private final String regex; | ||
| private final String replaceWith; | ||
| private final boolean replaceAll; | ||
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| public RegexTransformationRule( | ||
| List<String> eventKeys, | ||
| String regex, | ||
| String replaceWith, | ||
| boolean replaceAll | ||
| ) { | ||
| this.eventKeys = eventKeys; | ||
| this.regex = regex; | ||
| this.replaceWith = replaceWith; | ||
| this.replaceAll = replaceAll; | ||
| } | ||
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| @Override | ||
| protected List<String> getEventKeys() { | ||
| return eventKeys; | ||
| } | ||
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| @Override | ||
| protected void applyTransformation(Map<String, Object> event, List<String> eventKey) { | ||
| var oldValue = event.get(eventKey.get(0)); | ||
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| var newValue = ""; | ||
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| if (oldValue instanceof String oldStringValue) { | ||
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| if (this.replaceAll) { | ||
| newValue = oldStringValue.replaceAll(regex, this.replaceWith); | ||
| } else { | ||
| newValue = oldStringValue.replaceFirst(regex, this.replaceWith); | ||
| } | ||
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| event.put(eventKey.get(0), newValue); | ||
| } else { | ||
| // add empty string if key is not present or wrong data type | ||
| event.put(eventKey.get(0), newValue); | ||
| } | ||
| } | ||
| } |
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