package org.etk.orm.plugins.common;
import java.util.Iterator;
import javax.jcr.Node;
import javax.jcr.NodeIterator;
import javax.jcr.Property;
import javax.jcr.PropertyIterator;
import javax.jcr.RepositoryException;
import javax.jcr.UnsupportedRepositoryOperationException;
import javax.jcr.nodetype.NodeType;
import javax.jcr.nodetype.PropertyDefinition;
public class JCR {
@SuppressWarnings("unchecked")
public static Iterator<Property> adapt(final PropertyIterator iterator) {
return (Iterator<Property>)iterator;
}
@SuppressWarnings("unchecked")
public static Iterator<Node> adapt(final NodeIterator iterator) {
return (Iterator<Node>)iterator;
}
/**
* Return true if the two nodes are equals with the meaning:
* <ul>
* <li>two null nodes are equals</li>
* <li>two non null nodes are equals if
* <li>the are originated from the same session</li>
* <li>they have the same id when they are referenceable otherwise they have the same path</li>
* </li>
* </ul>
*
* @param a the node a
* @param b the node b
* @return true if the two nodes are equals
* @throws RepositoryException any repository exception
*/
public static boolean equals(Node a, Node b) throws RepositoryException {
boolean equals;
if (a == b) {
equals = true;
} else if (a == null || b == null) {
return false;
} else {
if (a.getSession() == b.getSession()) {
try {
String aId = a.getUUID();
String bId = b.getUUID();
equals = aId.equals(bId);
}
catch (UnsupportedRepositoryOperationException e) {
// Compare path
String aPath = a.getPath();
String bPath = b.getPath();
equals = aPath.equals(bPath);
}
} else {
equals = false;
}
}
return equals;
}
public static boolean hasMixin(Node node, String mixinTypeName) throws RepositoryException {
if (node == null) {
throw new NullPointerException();
}
if (mixinTypeName == null) {
throw new NullPointerException();
}
for (NodeType nodeType : node.getMixinNodeTypes()) {
if (nodeType.getName().equals(mixinTypeName)) {
return true;
}
}
return false;
}
public static PropertyDefinition getPropertyDefinition(NodeType nodeType, String propertyName) throws RepositoryException {
for (PropertyDefinition def : nodeType.getPropertyDefinitions()) {
if (def.getName().equals(propertyName)) {
return def;
}
}
return null;
}
public static PropertyDefinition getPropertyDefinition(Node node, String propertyName) throws RepositoryException {
if (node.hasProperty(propertyName)) {
return node.getProperty(propertyName).getDefinition();
} else {
NodeType primaryNodeType = node.getPrimaryNodeType();
PropertyDefinition def = getPropertyDefinition(primaryNodeType, propertyName);
if (def == null) {
for (NodeType mixinNodeType : node.getMixinNodeTypes()) {
def = getPropertyDefinition(mixinNodeType, propertyName);
if (def != null) {
break;
}
}
}
return def;
}
}
public static String qualify(String prefix, String localName) {
if (localName == null) {
return null;
} else {
if (prefix != null && prefix.length() > 0) {
return prefix + ':' + localName;
} else {
return localName;
}
}
}
}