1 package org.simantics.db.layer0.request;
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3 import java.util.Collection;
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4 import java.util.HashSet;
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5 import java.util.Set;
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7 import org.simantics.db.ReadGraph;
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8 import org.simantics.db.Resource;
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9 import org.simantics.db.common.request.UnaryRead;
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10 import org.simantics.db.exception.DatabaseException;
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12 public class ClassificationsRequest extends UnaryRead<Collection<Resource>, Set<String>> {
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14 public ClassificationsRequest(Collection<Resource> principalTypes) {
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15 super(principalTypes);
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19 public Set<String> perform(ReadGraph graph) throws DatabaseException {
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20 Set<String> result = new HashSet<String>(parameter.size());
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21 Set<Resource> allTypes = new HashSet<Resource>(parameter);
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22 for(Resource principalType : parameter) allTypes.addAll(graph.getSupertypes(principalType));
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23 for(Resource type : allTypes) {
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24 String uri = graph.getPossibleURI(type);
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25 if(uri != null) result.add(uri);
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