+++ /dev/null
-package org.argeo.api.gcr;
-
-import static java.nio.charset.StandardCharsets.UTF_8;
-
-import java.nio.charset.StandardCharsets;
-import java.util.Collections;
-import java.util.Map;
-import java.util.Objects;
-import java.util.TreeMap;
-import java.util.UUID;
-
-import javax.xml.XMLConstants;
-import javax.xml.namespace.NamespaceContext;
-import javax.xml.namespace.QName;
-
-/**
- * A {@link QName} which MUST have prefix and whose {@link #toString()} method
- * returns the prefixed form (prefix:localPart).
- */
-public class ContentName extends QName {
- private static final long serialVersionUID = 5722920985400306100L;
- public final static UUID NIL_UUID = UUID.fromString("00000000-0000-0000-0000-000000000000");
- /**
- * The UUID v3 of http://www.w3.org/2000/xmlns/ within the standard DNS
- * namespace, to be used as a base for the namespaces.
- *
- * @see https://www.w3.org/TR/xml-names/#ns-decl
- */
- // uuidgen --md5 --namespace @dns --name http://www.w3.org/2000/xmlns/
- // NOTE : must be declared before default namespaces
- public final static UUID XMLNS_UUID = UUID.fromString("4b352aad-ba1c-3139-b9d3-41e5816f6088");
- // uuidgen --md5 --namespace 4b352aad-ba1c-3139-b9d3-41e5816f6088 --name ""
- public final static UUID NULL_NS_UUID = UUID.fromString("f07726e3-99c8-3178-b758-a86ed41f300d");
-
- private final static Map<String, UUID> namespaceUuids = Collections.synchronizedMap(new TreeMap<>());
- private final static Map<String, UUID> nameUuids = Collections.synchronizedMap(new TreeMap<>());
-
- static {
- assert NULL_NS_UUID.equals(nameUUIDv3(XMLNS_UUID, XMLConstants.NULL_NS_URI.getBytes(UTF_8)));
- }
-
-// private final UUID uuid;
-
- public ContentName(String namespaceURI, String localPart, NamespaceContext nsContext) {
- super(namespaceURI, localPart, checkPrefix(nsContext, namespaceURI));
- }
-
- private static String checkPrefix(NamespaceContext nsContext, String namespaceURI) {
- Objects.requireNonNull(nsContext, "Namespace context cannot be null");
- Objects.requireNonNull(namespaceURI, "Namespace URI cannot be null");
- String prefix = nsContext.getNamespaceURI(namespaceURI);
- if (prefix == null)
- throw new IllegalStateException("No prefix found for " + namespaceURI + " from context " + nsContext);
- return prefix;
- }
-
- ContentName(String namespaceURI, String localPart, String prefix) {
- super(namespaceURI, localPart, prefix);
- }
-
- public ContentName(String localPart) {
- super(XMLConstants.NULL_NS_URI, localPart, XMLConstants.DEFAULT_NS_PREFIX);
- }
-
- public ContentName(QName qName, NamespaceContext nsContext) {
- this(qName.getNamespaceURI(), qName.getLocalPart(), nsContext);
- }
-
- public String toQNameString() {
- return super.toString();
- }
-
- public String toPrefixedString() {
- return toPrefixedString(this);
- }
-
- /*
- * OBJECT METHOS
- */
-
- @Override
- public String toString() {
- return toPrefixedString();
- }
-
- @Override
- protected Object clone() throws CloneNotSupportedException {
- return new ContentName(getNamespaceURI(), getLocalPart(), getPrefix());
- }
-
- public static String toPrefixedString(QName name) {
- String prefix = name.getPrefix();
- assert prefix != null;
- return "".equals(prefix) ? name.getLocalPart() : prefix + ":" + name.getLocalPart();
- }
-// ContentNamespace getNamespace();
-//
-// String getName();
-
- public static UUID namespaceUuid(String namespaceURI) {
- if (XMLConstants.NULL_NS_URI.equals(namespaceURI))
- return NULL_NS_UUID;
- Objects.requireNonNull(namespaceURI, "Namespace URI cannot be null");
- synchronized (namespaceUuids) {
- UUID namespaceUuid = namespaceUuids.get(namespaceURI);
- if (namespaceUuid == null) {
- namespaceUuid = nameUUIDv3(ContentName.XMLNS_UUID,
- namespaceURI.toString().getBytes(StandardCharsets.UTF_8));
- namespaceUuids.put(namespaceURI, namespaceUuid);
- }
- return namespaceUuid;
- }
- }
-
- public static UUID nameUuid(String namespaceURI, QName name) {
- return nameUuid(name.getNamespaceURI(), name.getLocalPart());
- }
-
- public static UUID nameUuid(String namespaceURI, String name) {
- Objects.requireNonNull(namespaceURI, "Namespace cannot be null");
- Objects.requireNonNull(name, "Name cannot be null");
- synchronized (nameUuids) {
- String key = XMLConstants.NULL_NS_URI.equals(namespaceURI) ? name : "{" + namespaceURI + "}" + name;
- UUID nameUuid = nameUuids.get(key);
- if (nameUuid == null) {
- UUID namespaceUuid = namespaceUuid(namespaceURI);
- nameUuid = nameUUIDv3(namespaceUuid, name.getBytes(StandardCharsets.UTF_8));
- namespaceUuids.put(key, nameUuid);
- }
- return nameUuid;
- }
- }
-
- /*
- * CANONICAL IMPLEMENTATION based on java.util.UUID.nameUUIDFromBytes(byte[])
- */
- static UUID nameUUIDv3(UUID namespace, byte[] name) {
- byte[] arr = new byte[name.length + 16];
- ContentName.copyUuidBytes(namespace, arr, 0);
- System.arraycopy(name, 0, arr, 16, name.length);
- return UUID.nameUUIDFromBytes(arr);
- }
-
- static void copyUuidBytes(UUID uuid, byte[] arr, int offset) {
- long msb = uuid.getMostSignificantBits();
- long lsb = uuid.getLeastSignificantBits();
- assert arr.length >= 16 + offset;
- for (int i = offset; i < 8 + offset; i++)
- arr[i] = (byte) ((msb >> ((7 - i) * 8)) & 0xff);
- for (int i = 8 + offset; i < 16 + offset; i++)
- arr[i] = (byte) ((lsb >> ((15 - i) * 8)) & 0xff);
- }
-
- /*
- * UTILITIES
- */
-
- public static boolean contains(QName[] classes, QName name) {
- for (QName clss : classes) {
- if (clss.equals(name))
- return true;
- }
- return false;
- }
-}
projects / lgpl / argeo-commons.git / blobdiff