SingletonStrategy is an interface used to provide common factory access for the same object based on an implementation strategy for singleton.

AttributeHelper a number of helper methods for working with attribute values.

IndexedDocumentFactory is a factory of XML objects which create indexed Element implementations to allow quicker lookup via name of Element and Attributes though at the expense of more memory used to create the name indexes.

IndexedElement is an implementation of Element which maintains an index of the attributes and elements it contains to optimise lookups via name.

NodeComparator is a Comparator of Node instances which is capable of comparing Nodes for equality based on their values.

NonLazyDocumentFactory is a factory of XML objects which avoid using the lazy creation pattern.

NonLazyElement is the default DOM4J default implementation of an XML element.

PerThreadSingleton is an implementation of the SingletonStrategy used to provide common factory access to a single object instance based on an implementation strategy for one object instance per thread.

ProxyDocumentFactory implements a proxy to a DocumentFactory which is useful for implementation inheritence, allowing the pipelining of various factory implementations.

SimpleSingleton is an implementation of the SingletonStrategy interface used to provide common factory access for the same object instance.

UserDataAttribute support the adornment of a user data object on an Element or Attribute instance such that the methods setData(Object) will get and set the values of a user data object.

UserDataDocumentFactory is a factory of XML objects which support the adornment of a user data object on an Element or Attribute instance such that the methods getData() and setData() will get and set the values of a user data object.

UserDataElement support the adornment of a user data object on an Element or Attribute instance such that the methods setData(Object) will get and set the values of a user data object.