public void invoke(MethodInvocation invocation) throws Throwable {
if (current.get() != null) {
// Already invoking a method on the mix-in
return;
}
if (instance == null) {
instance = DirectInstantiator.INSTANCE.newInstance(mixInClass, proxy);
}
MethodInvocation beanInvocation =
new MethodInvocation(
invocation.getName(),
invocation.getReturnType(),
invocation.getGenericReturnType(),
invocation.getParameterTypes(),
instance,
invocation.getParameters());
current.set(beanInvocation);
try {
next.invoke(beanInvocation);
} finally {
current.set(null);
}
if (beanInvocation.found()) {
invocation.setResult(beanInvocation.getResult());
}
}
/** Returns a temporary buffer of at least the given size */
public static ByteBuffer getTemporaryDirectBuffer(int size) {
// If a buffer of this size is too large for the cache, there
// should not be a buffer in the cache that is at least as
// large. So we'll just create a new one. Also, we don't have
// to remove the buffer from the cache (as this method does
// below) given that we won't put the new buffer in the cache.
if (isBufferTooLarge(size)) {
return ByteBuffer.allocateDirect(size);
}
BufferCache cache = bufferCache.get();
ByteBuffer buf = cache.get(size);
if (buf != null) {
return buf;
} else {
// No suitable buffer in the cache so we need to allocate a new
// one. To avoid the cache growing then we remove the first
// buffer from the cache and free it.
if (!cache.isEmpty()) {
buf = cache.removeFirst();
free(buf);
}
return ByteBuffer.allocateDirect(size);
}
}
/** 关闭连接 */
public static final void closeConnection() {
Connection conn = conns.get();
try {
if (conn != null && !conn.isClosed()) {
conn.setAutoCommit(true);
conn.close();
connectionContext.remove(Thread.currentThread().getId());
}
} catch (SQLException e) {
log.error("Unabled to close connection!!! ", e);
}
conns.set(null);
}
// When finished, invoker must ensure that selector is empty
// by cancelling any related keys and explicitly releasing
// the selector by invoking releaseTemporarySelector()
static Selector getTemporarySelector(SelectableChannel sc) throws IOException {
SoftReference ref = (SoftReference) localSelector.get();
SelectorWrapper selWrapper = null;
Selector sel = null;
if (ref == null
|| ((selWrapper = (SelectorWrapper) ref.get()) == null)
|| ((sel = selWrapper.get()) == null)
|| (sel.provider() != sc.provider())) {
sel = sc.provider().openSelector();
localSelector.set(new SoftReference(new SelectorWrapper(sel)));
} else {
localSelectorWrapper.set(selWrapper);
}
return sel;
}
/**
* Releases a temporary buffer by returning to the cache or freeing it. If returning to the cache
* then insert it at the end. This makes it suitable for scatter/gather operations where the
* buffers are returned to cache in same order that they were obtained.
*/
static void offerLastTemporaryDirectBuffer(ByteBuffer buf) {
// If the buffer is too large for the cache we don't have to
// check the cache. We'll just free it.
if (isBufferTooLarge(buf)) {
free(buf);
return;
}
assert buf != null;
BufferCache cache = bufferCache.get();
if (!cache.offerLast(buf)) {
// cache is full
free(buf);
}
}
public static final Connection getConnection() throws SQLException {
Connection conn = conns.get();
if (conn == null || conn.isClosed()) {
conn = _getConnection();
if (conn == null) throw new SQLException("Unabled to get connection.");
conns.set(conn);
// RequestContext ctx = RequestContext.get();
// connectionContext.put(
// Thread.currentThread().getId(),
// new ConnectionContext(new Exception(), (ctx != null) ? ctx
// .ip() : null, (ctx != null) ? ctx.uri() : null,
// (ctx != null) ? ctx.request().getParameterMap()
// : null));
}
return (show_sql && !Proxy.isProxyClass(conn.getClass()))
? new _DebugConnection(conn).getConnection()
: conn;
}
static Object createArgumentPlaceholder(Class<?> clazz) {
return isLimitedValues(clazz)
? LIMITED_VALUE_ARGUMENTS.get().getNextPlaceholder(clazz)
: createArgumentPlaceholder(clazz, PLACEHOLDER_COUNTER.addAndGet(1));
}
public static HttpRequestContext getHttpRequestContext() {
return httpRequestContext.get();
}