/** Basic tests */
public void testBasics() throws IOException {
Properties props = new Properties();
RecordManager recman =
RecordManagerFactory.createRecordManager(TestRecordFile.testFileName, props);
HashBucket bucket = new HashBucket(0);
// add
bucket.addElement("key", "value");
String s = (String) bucket.getValue("key");
assertEquals("value", s);
// replace
bucket.addElement("key", "value2");
s = (String) bucket.getValue("key");
assertEquals("value2", s);
// add
bucket.addElement("key2", "value3");
s = (String) bucket.getValue("key2");
assertEquals("value3", s);
// remove
bucket.removeElement("key2");
s = (String) bucket.getValue("key2");
assertEquals(null, s);
bucket.removeElement("key");
s = (String) bucket.getValue("key");
assertEquals(null, s);
recman.close();
}
/**
* Returns the value which is associated with the given key. Returns <code>null</code> if there is
* not association for this key.
*
* @param key key whose associated value is to be returned
*/
V get(K key) throws IOException {
int hash = hashCode(key);
long child_recid = _children[hash];
if (child_recid == 0) {
// not bucket/page --> not found
return null;
} else {
HashNode<K, V> node = (HashNode<K, V>) _recman.fetch(child_recid, tree.SERIALIZER);
// System.out.println("HashDirectory.get() child is : "+node);
if (node instanceof HashDirectory) {
// recurse into next directory level
HashDirectory<K, V> dir = (HashDirectory<K, V>) node;
dir.setPersistenceContext(_recman, child_recid);
return dir.get(key);
} else {
// node is a bucket
HashBucket<K, V> bucket = (HashBucket) node;
return bucket.getValue(key);
}
}
}
