adding servlet api (from tomcat)

[gigi.git] / lib / servlet-api / javax / servlet / WriteListener.java

diff --git a/lib/servlet-api/javax/servlet/WriteListener.java b/lib/servlet-api/javax/servlet/WriteListener.java
new file mode 100644 (file)
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+++ b/lib/servlet-api/javax/servlet/WriteListener.java
@@ -0,0 +1,45 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package javax.servlet;
+
+import java.io.IOException;
+
+/**
+ * Receives notification of write events when using non-blocking IO.
+ *
+ * @since Servlet 3.1
+ */
+public interface WriteListener extends java.util.EventListener{
+
+    /**
+     * Invoked when it it possible to write data without blocking. The container
+     * will invoke this method the first time for a request as soon as data can
+     * be written. Subsequent invocations will only occur if a call to
+     * {@link ServletOutputStream#isReady()} has returned false and it has since
+     * become possible to write data.
+     *
+     * @throws IOException
+     */
+    public void onWritePossible() throws IOException;
+
+    /**
+     * Invoked if an error occurs while writing the response.
+     *
+     * @param throwable
+     */
+    public void onError(java.lang.Throwable throwable);
+}
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