--- /dev/null
+package org.argeo.jcr;
+
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+
+import javax.jcr.Node;
+import javax.jcr.Property;
+import javax.jcr.RepositoryException;
+import javax.jcr.Value;
+
+/** Uilities around the JCR extensions. */
+public class JcrxApi {
+ public final static String MD5 = "MD5";
+ public final static String SHA1 = "SHA1";
+ public final static String SHA256 = "SHA-256";
+ public final static String SHA512 = "SHA-512";
+
+ public final static String EMPTY_MD5 = "d41d8cd98f00b204e9800998ecf8427e";
+ public final static String EMPTY_SHA1 = "da39a3ee5e6b4b0d3255bfef95601890afd80709";
+ public final static String EMPTY_SHA256 = "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855";
+ public final static String EMPTY_SHA512 = "cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e";
+
+ public final static int LENGTH_MD5 = EMPTY_MD5.length();
+ public final static int LENGTH_SHA1 = EMPTY_SHA1.length();
+ public final static int LENGTH_SHA256 = EMPTY_SHA256.length();
+ public final static int LENGTH_SHA512 = EMPTY_SHA512.length();
+
+ /*
+ * XML
+ */
+ /**
+ * Set as a subnode which will be exported as an XML element.
+ */
+ public static String getXmlValue(Node node, String name) {
+ try {
+ if (!node.hasNode(name))
+ throw new IllegalArgumentException("No XML text named " + name);
+ return node.getNode(name).getNode(Jcr.JCR_XMLTEXT).getProperty(Jcr.JCR_XMLCHARACTERS).getString();
+ } catch (RepositoryException e) {
+ throw new IllegalStateException("Cannot get " + name + " as XML text", e);
+ }
+ }
+
+ /**
+ * Set as a subnode which will be exported as an XML element.
+ */
+ public static void setXmlValue(Node node, String name, String value) {
+ try {
+ if (node.hasNode(name))
+ node.getNode(name).getNode(Jcr.JCR_XMLTEXT).setProperty(Jcr.JCR_XMLCHARACTERS, value);
+ else
+ node.addNode(name, JcrxType.JCRX_XMLVALUE).addNode(Jcr.JCR_XMLTEXT, JcrxType.JCRX_XMLTEXT)
+ .setProperty(Jcr.JCR_XMLCHARACTERS, value);
+ } catch (RepositoryException e) {
+ throw new IllegalStateException("Cannot set " + name + " as XML text", e);
+ }
+ }
+
+ /**
+ * Add a checksum replacing the one which was previously set with the same
+ * length.
+ */
+ public static void addChecksum(Node node, String checksum) {
+ try {
+ if (!node.hasProperty(JcrxName.JCRX_SUM)) {
+ node.setProperty(JcrxName.JCRX_SUM, new String[] { checksum });
+ return;
+ } else {
+ int stringLength = checksum.length();
+ Property property = node.getProperty(JcrxName.JCRX_SUM);
+ List<Value> values = Arrays.asList(property.getValues());
+ Integer indexToRemove = null;
+ values: for (int i = 0; i < values.size(); i++) {
+ Value value = values.get(i);
+ if (value.getString().length() == stringLength) {
+ indexToRemove = i;
+ break values;
+ }
+ }
+ if (indexToRemove != null)
+ values.set(indexToRemove, node.getSession().getValueFactory().createValue(checksum));
+ else
+ values.add(0, node.getSession().getValueFactory().createValue(checksum));
+ property.setValue(values.toArray(new Value[values.size()]));
+ }
+ } catch (RepositoryException e) {
+ throw new JcrException("Cannot set checksum on " + node, e);
+ }
+ }
+
+ /** Replace all checksums. */
+ public static void setChecksums(Node node, List<String> checksums) {
+ try {
+ node.setProperty(JcrxName.JCRX_SUM, checksums.toArray(new String[checksums.size()]));
+ } catch (RepositoryException e) {
+ throw new JcrException("Cannot set checksums on " + node, e);
+ }
+ }
+
+ /** Replace all checksums. */
+ public static List<String> getChecksums(Node node) {
+ try {
+ List<String> res = new ArrayList<>();
+ if (!node.hasProperty(JcrxName.JCRX_SUM))
+ return res;
+ Property property = node.getProperty(JcrxName.JCRX_SUM);
+ for (Value value : property.getValues()) {
+ res.add(value.getString());
+ }
+ return res;
+ } catch (RepositoryException e) {
+ throw new JcrException("Cannot get checksums from " + node, e);
+ }
+ }
+
+// /** Replace all checksums with this single one. */
+// public static void setChecksum(Node node, String checksum) {
+// setChecksums(node, Collections.singletonList(checksum));
+// }
+
+ /** Retrieves the checksum with this algorithm, or null if not found. */
+ public static String getChecksum(Node node, String algorithm) {
+ int stringLength;
+ switch (algorithm) {
+ case MD5:
+ stringLength = LENGTH_MD5;
+ break;
+ case SHA1:
+ stringLength = LENGTH_SHA1;
+ break;
+ case SHA256:
+ stringLength = LENGTH_SHA256;
+ break;
+ case SHA512:
+ stringLength = LENGTH_SHA512;
+ break;
+ default:
+ throw new IllegalArgumentException("Unkown algorithm " + algorithm);
+ }
+ return getChecksum(node, stringLength);
+ }
+
+ /** Retrieves the checksum with this string length, or null if not found. */
+ public static String getChecksum(Node node, int stringLength) {
+ try {
+ if (!node.hasProperty(JcrxName.JCRX_SUM))
+ return null;
+ Property property = node.getProperty(JcrxName.JCRX_SUM);
+ for (Value value : property.getValues()) {
+ String str = value.getString();
+ if (str.length() == stringLength)
+ return str;
+ }
+ return null;
+ } catch (RepositoryException e) {
+ throw new IllegalStateException("Cannot get checksum for " + node, e);
+ }
+ }
+
+}
projects / lgpl / argeo-commons.git / blobdiff