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27 package gov.nist.secauto.metaschema.schemagen.datatype;
28
29 import gov.nist.secauto.metaschema.core.util.CollectionUtil;
30 import gov.nist.secauto.metaschema.core.util.ObjectUtils;
31
32 import org.codehaus.stax2.XMLStreamWriter2;
33
34 import java.util.ArrayList;
35 import java.util.HashSet;
36 import java.util.LinkedHashMap;
37 import java.util.List;
38 import java.util.Map;
39 import java.util.Set;
40 import java.util.function.Function;
41 import java.util.stream.Collectors;
42
43 import javax.xml.stream.XMLStreamException;
44
45 import edu.umd.cs.findbugs.annotations.NonNull;
46
47 public class CompositeDatatypeProvider implements IDatatypeProvider {
48 @NonNull
49 private final List<IDatatypeProvider> proxiedProviders;
50
51 public CompositeDatatypeProvider(@NonNull List<IDatatypeProvider> proxiedProviders) {
52 this.proxiedProviders = CollectionUtil.unmodifiableList(new ArrayList<>(proxiedProviders));
53 }
54
55 @NonNull
56 protected List<IDatatypeProvider> getProxiedProviders() {
57 return proxiedProviders;
58 }
59
60 @Override
61 public Map<String, IDatatypeContent> getDatatypes() {
62 return ObjectUtils.notNull(proxiedProviders.stream()
63 .flatMap(provider -> provider.getDatatypes().values().stream())
64 .collect(Collectors.toMap(content -> content.getTypeName(), Function.identity(), (e1, e2) -> e2,
65 LinkedHashMap::new)));
66 }
67
68 @Override
69 public Set<String> generateDatatypes(Set<String> requiredTypes, XMLStreamWriter2 writer)
70 throws XMLStreamException {
71 Set<String> retval = new HashSet<>();
72
73 for (IDatatypeProvider provider : getProxiedProviders()) {
74 retval.addAll(provider.generateDatatypes(requiredTypes, writer));
75 }
76 return retval;
77 }
78
79 }