| /* |
| * 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.propagation; |
| |
| import org.apache.sysds.runtime.instructions.cp.ListObject; |
| import org.apache.sysds.runtime.privacy.PrivacyConstraint; |
| import org.apache.sysds.runtime.privacy.PrivacyUtils; |
| import org.apache.sysds.runtime.privacy.finegrained.DataRange; |
| |
| import java.util.Map; |
| |
| public class ListAppendPropagator implements Propagator { |
| |
| private final ListObject input1, input2; |
| private final PrivacyConstraint privacyConstraint1, privacyConstraint2; |
| |
| public ListAppendPropagator(ListObject input1, PrivacyConstraint privacyConstraint1, ListObject input2, PrivacyConstraint privacyConstraint2){ |
| this.input1 = input1; |
| this.input2 = input2; |
| this.privacyConstraint1 = privacyConstraint1; |
| this.privacyConstraint2 = privacyConstraint2; |
| } |
| |
| @Override public PrivacyConstraint propagate() { |
| PrivacyConstraint mergedPrivacyConstraint = new PrivacyConstraint(); |
| propagateInput1Constraint(mergedPrivacyConstraint); |
| propagateInput2Constraint(mergedPrivacyConstraint); |
| return mergedPrivacyConstraint; |
| } |
| |
| private void propagateInput1Constraint(PrivacyConstraint mergedPrivacyConstraint){ |
| if(PrivacyUtils.privacyConstraintActivated(privacyConstraint1)) { |
| mergedPrivacyConstraint.getFineGrainedPrivacy() |
| .put(new DataRange(new long[] {0}, new long[] {input1.getLength()-1}), privacyConstraint1.getPrivacyLevel()); |
| } |
| if ( PrivacyUtils.privacyConstraintFineGrainedActivated(privacyConstraint1) ){ |
| privacyConstraint1.getFineGrainedPrivacy().getAllConstraintsList().forEach( |
| constraint -> mergedPrivacyConstraint.getFineGrainedPrivacy().put(constraint.getKey(), constraint.getValue())); |
| } |
| } |
| |
| private void propagateInput2Constraint(PrivacyConstraint mergedPrivacyConstraint){ |
| if ( PrivacyUtils.privacyConstraintActivated(privacyConstraint2) ){ |
| mergedPrivacyConstraint.getFineGrainedPrivacy() |
| .put(new DataRange(new long[]{input1.getLength()}, new long[]{input1.getLength() + input2.getLength() - 1}), privacyConstraint2.getPrivacyLevel()); |
| } |
| if ( PrivacyUtils.privacyConstraintFineGrainedActivated(privacyConstraint2) ){ |
| for ( Map.Entry<DataRange, PrivacyConstraint.PrivacyLevel> constraint : privacyConstraint2.getFineGrainedPrivacy().getAllConstraintsList()){ |
| long beginIndex = constraint.getKey().getBeginDims()[0] + input1.getLength(); |
| long endIndex = constraint.getKey().getEndDims()[0] + input1.getLength(); |
| mergedPrivacyConstraint.getFineGrainedPrivacy() |
| .put(new DataRange(new long[]{beginIndex}, new long[]{endIndex}), constraint.getValue()); |
| } |
| } |
| } |
| } |