Source Code Cross Referenced for ReadOnlyFloatArrayBuffer.java in  » Apache-Harmony-Java-SE » java-package » java » nio » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Apache Harmony Java SE » java package » java.nio 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /*
002:         *  Licensed to the Apache Software Foundation (ASF) under one or more
003:         *  contributor license agreements.  See the NOTICE file distributed with
004:         *  this work for additional information regarding copyright ownership.
005:         *  The ASF licenses this file to You under the Apache License, Version 2.0
006:         *  (the "License"); you may not use this file except in compliance with
007:         *  the License.  You may obtain a copy of the License at
008:         *
009:         *     http://www.apache.org/licenses/LICENSE-2.0
010:         *
011:         *  Unless required by applicable law or agreed to in writing, software
012:         *  distributed under the License is distributed on an "AS IS" BASIS,
013:         *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014:         *  See the License for the specific language governing permissions and
015:         *  limitations under the License.
016:         */
017:
018:        package java.nio;
019:
020:        /**
021:         * FloatArrayBuffer, ReadWriteFloatArrayBuffer and ReadOnlyFloatArrayBuffer
022:         * compose the implementation of array based float buffers.
023:         * <p>
024:         * ReadOnlyFloatArrayBuffer extends FloatArrayBuffer with all the write methods
025:         * throwing read only exception.
026:         * </p>
027:         * <p>
028:         * This class is marked final for runtime performance.
029:         * </p>
030:         * 
031:         */
032:        final class ReadOnlyFloatArrayBuffer extends FloatArrayBuffer {
033:
034:            static ReadOnlyFloatArrayBuffer copy(FloatArrayBuffer other,
035:                    int markOfOther) {
036:                ReadOnlyFloatArrayBuffer buf = new ReadOnlyFloatArrayBuffer(
037:                        other.capacity(), other.backingArray, other.offset);
038:                buf.limit = other.limit();
039:                buf.position = other.position();
040:                buf.mark = markOfOther;
041:                return buf;
042:            }
043:
044:            ReadOnlyFloatArrayBuffer(int capacity, float[] backingArray,
045:                    int arrayOffset) {
046:                super (capacity, backingArray, arrayOffset);
047:            }
048:
049:            @Override
050:            public FloatBuffer asReadOnlyBuffer() {
051:                return duplicate();
052:            }
053:
054:            @Override
055:            public FloatBuffer compact() {
056:                throw new ReadOnlyBufferException();
057:            }
058:
059:            @Override
060:            public FloatBuffer duplicate() {
061:                return copy(this , mark);
062:            }
063:
064:            @Override
065:            public boolean isReadOnly() {
066:                return true;
067:            }
068:
069:            @Override
070:            protected float[] protectedArray() {
071:                throw new ReadOnlyBufferException();
072:            }
073:
074:            @Override
075:            protected int protectedArrayOffset() {
076:                throw new ReadOnlyBufferException();
077:            }
078:
079:            @Override
080:            protected boolean protectedHasArray() {
081:                return false;
082:            }
083:
084:            @Override
085:            public FloatBuffer put(float c) {
086:                throw new ReadOnlyBufferException();
087:            }
088:
089:            @Override
090:            public FloatBuffer put(int index, float c) {
091:                throw new ReadOnlyBufferException();
092:            }
093:
094:            @Override
095:            public FloatBuffer put(FloatBuffer buf) {
096:                throw new ReadOnlyBufferException();
097:            }
098:
099:            @Override
100:            public final FloatBuffer put(float[] src, int off, int len) {
101:                throw new ReadOnlyBufferException();
102:            }
103:
104:            @Override
105:            public FloatBuffer slice() {
106:                return new ReadOnlyFloatArrayBuffer(remaining(), backingArray,
107:                        offset + position);
108:            }
109:
110:        }
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