/**
* Returns true if the given class has an associated CollectionHandler.
*
* @param javaClass the class to search collection handlers for
* @return true if the given class has an associated CollectionHandler, otherwise false.
*/
public static boolean hasHandler(Class javaClass) {
if (_info == null) loadInfo();
// -- Adjust javaClass for arrays, needed for arrays of
// -- primitives, except for byte[] which shouldn't
// -- use a collection handler
if (javaClass.isArray()) {
if (javaClass.getComponentType() != Byte.TYPE) javaClass = Object[].class;
}
for (int i = 0; i < _info.length; ++i)
if (_info[i].javaClass.isAssignableFrom(javaClass)) return true;
return false;
} // -- hasHandler
/**
* Returns the collection's Java class from the collection name. The collection name may be a
* short name (e.g. <tt>vector</tt>) or the collection Java class name (e.g.
* <tt>java.util.Vector</tt>). If the collection is not supported, an exception is thrown.
*
* @param name The collection name
* @return The collection Java class
* @throws MappingException The named collection is not supported
*/
public static Class getCollectionType(String name) throws MappingException {
if (_info == null) loadInfo();
for (int i = 0; i < _info.length; ++i)
if (_info[i].shortName.equalsIgnoreCase(name) || _info[i].javaClass.getName().equals(name))
return _info[i].javaClass;
// throw new MappingException( "mapping.noCollectionHandler", name );
// -- Fix for JDK 1.1 compatibility
// old code: return Collection.class;
if (!_loadedCollectionClass) {
_loadedCollectionClass = true;
try {
_collectionClass = Class.forName("java.util.Collection");
} catch (ClassNotFoundException cnfe) {
// Do nothing we are just here for JDK 1.1
// compatibility
}
}
return _collectionClass;
}
/**
* Returns the collection's handler based on the Java class.
*
* @param javaClass The collection's Java class
* @return The collection handler
* @throws MappingException The collection class is not supported
*/
public static CollectionHandler getHandler(Class javaClass) throws MappingException {
if (_info == null) loadInfo();
// -- Adjust javaClass for arrays, needed for arrays of
// -- primitives, except for byte[] which shouldn't
// -- use a collection handler
if (javaClass.isArray()) {
if (javaClass.getComponentType() != Byte.TYPE) javaClass = Object[].class;
}
// -- First check direct class equality, to provide a better match
// -- (for example in JDK 1.2 a Vector is also a Collection)
for (int i = 0; i < _info.length; ++i)
if (_info[i].javaClass.equals(javaClass)) return _info[i].handler;
// -- handle Possible inheritence
for (int i = 0; i < _info.length; ++i)
if (_info[i].javaClass.isAssignableFrom(javaClass)) return _info[i].handler;
throw new MappingException("mapping.noCollectionHandler", javaClass.getName());
}
/**
* Returns true if the collection requires get/set methods. <tt>java.util</tt> collections only
* require a get method, but an array collection required both get and set methods.
*
* @parfam javaClass The collection's java class
* @return True if collection requires get/set methods, false if collection requires only get
* method
* @throws MappingException The collection class is not supported
*/
public static boolean isGetSetCollection(Class javaClass) throws MappingException {
if (_info == null) loadInfo();
for (int i = 0; i < _info.length; ++i)
if (_info[i].javaClass.equals(javaClass)) return _info[i].getSetCollection;
throw new MappingException("mapping.noCollectionHandler", javaClass.getName());
}
