01: /*
02: * $HeadURL: https://svn.apache.org/repos/asf/httpcomponents/httpcore/tags/4.0-beta1/module-nio/src/main/java/org/apache/http/impl/nio/codecs/AbstractContentEncoder.java $
03: * $Revision: 613298 $
04: * $Date: 2008-01-18 23:09:22 +0100 (Fri, 18 Jan 2008) $
05: *
06: * ====================================================================
07: * Licensed to the Apache Software Foundation (ASF) under one
08: * or more contributor license agreements. See the NOTICE file
09: * distributed with this work for additional information
10: * regarding copyright ownership. The ASF licenses this file
11: * to you under the Apache License, Version 2.0 (the
12: * "License"); you may not use this file except in compliance
13: * with the License. You may obtain a copy of the License at
14: *
15: * http://www.apache.org/licenses/LICENSE-2.0
16: *
17: * Unless required by applicable law or agreed to in writing,
18: * software distributed under the License is distributed on an
19: * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
20: * KIND, either express or implied. See the License for the
21: * specific language governing permissions and limitations
22: * under the License.
23: * ====================================================================
24: *
25: * This software consists of voluntary contributions made by many
26: * individuals on behalf of the Apache Software Foundation. For more
27: * information on the Apache Software Foundation, please see
28: * <http://www.apache.org/>.
29: *
30: */
31:
32: package org.apache.http.impl.nio.codecs;
33:
34: import java.io.IOException;
35: import java.nio.channels.WritableByteChannel;
36:
37: import org.apache.http.impl.io.HttpTransportMetricsImpl;
38: import org.apache.http.nio.ContentEncoder;
39: import org.apache.http.nio.reactor.SessionOutputBuffer;
40:
41: public abstract class AbstractContentEncoder implements ContentEncoder {
42:
43: protected final WritableByteChannel channel;
44: protected final SessionOutputBuffer buffer;
45: protected final HttpTransportMetricsImpl metrics;
46:
47: protected boolean completed;
48:
49: public AbstractContentEncoder(final WritableByteChannel channel,
50: final SessionOutputBuffer buffer,
51: final HttpTransportMetricsImpl metrics) {
52: super ();
53: if (channel == null) {
54: throw new IllegalArgumentException(
55: "Channel may not be null");
56: }
57: if (buffer == null) {
58: throw new IllegalArgumentException(
59: "Session input buffer may not be null");
60: }
61: if (metrics == null) {
62: throw new IllegalArgumentException(
63: "Transport metrics may not be null");
64: }
65: this .buffer = buffer;
66: this .channel = channel;
67: this .metrics = metrics;
68: }
69:
70: public boolean isCompleted() {
71: return this .completed;
72: }
73:
74: public void complete() throws IOException {
75: this .completed = true;
76: }
77:
78: protected void assertNotCompleted() {
79: if (this .completed) {
80: throw new IllegalStateException(
81: "Decoding process already completed");
82: }
83: }
84:
85: }
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