@Override
public Object fetch(Namespace namespace, String key) {
try {
Object obj =
jdbcTemplate.queryForObject(
"select value from " + TABLE_NAME + " where name=? and key=?",
new Object[] {namespace.toString(), key},
Object.class);
return SerializationUtils.deserialize((byte[]) obj);
} catch (IncorrectResultSizeDataAccessException e) {
return null;
}
}
@Override
public Collection<Object> fetchAll(Namespace namespace, String key) {
List<Map<String, Object>> fetch;
try {
fetch =
jdbcTemplate.queryForList(
"select value as value from " + TABLE_NAME + " where name=? and key=? ",
new Object[] {namespace.toString(), key});
} catch (EmptyResultDataAccessException e) {
return ImmutableList.of();
}
List<Object> result = Lists.newLinkedList();
for (Map<String, Object> map : fetch) {
byte[] data = (byte[]) map.get("value");
Object value = SerializationUtils.deserialize(data);
result.add(value);
}
return result;
}
@Override
public Multimap<String, Object> fetchAll(Namespace namespace) {
List<Map<String, Object>> fetch;
try {
fetch =
jdbcTemplate.queryForList(
"select key as key, value as value from " + TABLE_NAME + " where name=? ",
new Object[] {namespace.toString()});
} catch (EmptyResultDataAccessException e) {
return ImmutableMultimap.of();
}
Multimap<String, Object> result = ArrayListMultimap.create();
for (Map<String, Object> map : fetch) {
String key = (String) map.get("key");
byte[] data = (byte[]) map.get("value");
Object value = SerializationUtils.deserialize(data);
result.put(key, value);
}
return result;
}
@Override
public void put(Namespace namespace, String key, Object value) {
jdbcTemplate.update(
"insert into " + TABLE_NAME + " (name, key, value) values (?, ?, ?)",
new Object[] {namespace.toString(), key, SerializationUtils.serialize(value)});
}
private Namespace namespace() {
return Namespace.of(sessionId, taskId, "ValidationCollector", kernelContext.getId().toString());
}