| /* |
| * 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.sysds.runtime.privacy.finegrained; |
| |
| import java.util.AbstractMap; |
| import java.util.ArrayList; |
| import java.util.LinkedHashMap; |
| import java.util.Map; |
| import java.util.Map.Entry; |
| |
| import org.apache.sysds.runtime.privacy.PrivacyConstraint.PrivacyLevel; |
| |
| /** |
| * Simple implementation of retrieving fine-grained privacy constraints based on |
| * iterating a LinkedHashMap. |
| */ |
| public class FineGrainedPrivacyMap implements FineGrainedPrivacy { |
| |
| private Map<DataRange, PrivacyLevel> constraintCollection = new LinkedHashMap<>(); |
| |
| @Override |
| public void put(DataRange dataRange, PrivacyLevel privacyLevel) { |
| constraintCollection.put(dataRange, privacyLevel); |
| } |
| |
| @Override |
| public Map<DataRange, PrivacyLevel> getPrivacyLevel(DataRange searchRange) { |
| Map<DataRange, PrivacyLevel> matches = new LinkedHashMap<>(); |
| constraintCollection.forEach((range, level) -> { |
| if (range.overlaps(searchRange)) |
| matches.put(range, level); |
| }); |
| return matches; |
| } |
| |
| @Override |
| public Map<DataRange, PrivacyLevel> getPrivacyLevelOfElement(long[] searchIndex) { |
| Map<DataRange, PrivacyLevel> matches = new LinkedHashMap<>(); |
| constraintCollection.forEach((range, level) -> { |
| if (range.contains(searchIndex)) |
| matches.put(range, level); |
| }); |
| return matches; |
| } |
| |
| @Override |
| public DataRange[] getDataRangesOfPrivacyLevel(PrivacyLevel privacyLevel) { |
| ArrayList<DataRange> matches = new ArrayList<>(); |
| constraintCollection.forEach((k, v) -> { |
| if (v == privacyLevel) |
| matches.add(k); |
| }); |
| return matches.toArray(new DataRange[0]); |
| } |
| |
| @Override |
| public void removeAllConstraints() { |
| constraintCollection.clear(); |
| } |
| |
| @Override |
| public boolean hasConstraints() { |
| return !constraintCollection.isEmpty(); |
| } |
| |
| @Override |
| public Map<String, long[][][]> getAllConstraints() { |
| ArrayList<long[][]> privateRanges = new ArrayList<>(); |
| ArrayList<long[][]> aggregateRanges = new ArrayList<>(); |
| constraintCollection.forEach((range, privacylevel) -> { |
| if (privacylevel == PrivacyLevel.Private) |
| privateRanges.add(new long[][] { range.getBeginDims(), range.getEndDims() }); |
| else if (privacylevel == PrivacyLevel.PrivateAggregation) |
| aggregateRanges.add(new long[][] { range.getBeginDims(), range.getEndDims() }); |
| }); |
| Map<String, long[][][]> constraintMap = new LinkedHashMap<>(); |
| constraintMap.put(PrivacyLevel.Private.name(), privateRanges.toArray(new long[0][][])); |
| constraintMap.put(PrivacyLevel.PrivateAggregation.name(), privateRanges.toArray(new long[0][][])); |
| return constraintMap; |
| } |
| |
| @Override |
| public ArrayList<Entry<DataRange, PrivacyLevel>> getAllConstraintsList() { |
| ArrayList<Map.Entry<DataRange, PrivacyLevel>> outputList = new ArrayList<>(); |
| constraintCollection.forEach((k,v)->outputList.add(new AbstractMap.SimpleEntry<>(k,v))); |
| return outputList; |
| } |
| } |