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package org.apache.lucene.store;
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership.
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* The ASF licenses this file to You under the Apache License, Version 2.0
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* (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.apache.org/licenses/LICENSE-2.0
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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import java.io.IOException;
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import java.util.HashMap;
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import org.apache.lucene.util.LuceneTestCase;
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/** Test huge RAMFile with more than Integer.MAX_VALUE bytes. */
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public class TestHugeRamFile extends LuceneTestCase {
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private static final long MAX_VALUE = (long) 2 * (long) Integer.MAX_VALUE;
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/** Fake a huge ram file by using the same byte buffer for all
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* buffers under maxint. */
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private static class DenseRAMFile extends RAMFile {
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private long capacity = 0;
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private HashMap<Integer,byte[]> singleBuffers = new HashMap<Integer,byte[]>();
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protected byte[] newBuffer(int size) {
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if (capacity <= MAX_VALUE) {
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// below maxint we reuse buffers
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byte buf[] = singleBuffers.get(Integer.valueOf(size));
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//System.out.println("allocate: "+size);
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singleBuffers.put(Integer.valueOf(size),buf);
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//System.out.println("allocate: "+size); System.out.flush();
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return new byte[size];
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/** Test huge RAMFile with more than Integer.MAX_VALUE bytes. (LUCENE-957) */
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public void testHugeFile() throws IOException {
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DenseRAMFile f = new DenseRAMFile();
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RAMOutputStream out = new RAMOutputStream(f);
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byte b1[] = new byte[RAMOutputStream.BUFFER_SIZE];
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byte b2[] = new byte[RAMOutputStream.BUFFER_SIZE / 3];
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for (int i = 0; i < b1.length; i++) {
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b1[i] = (byte) (i & 0x0007F);
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for (int i = 0; i < b2.length; i++) {
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b2[i] = (byte) (i & 0x0003F);
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assertEquals("output length must match",n,out.length());
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while (n <= MAX_VALUE - b1.length) {
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out.writeBytes(b1,0,b1.length);
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assertEquals("output length must match",n,out.length());
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//System.out.println("after writing b1's, length = "+out.length()+" (MAX_VALUE="+MAX_VALUE+")");
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for (int j=0; j<L; j++) {
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for (int i = 0; i < b2.length; i++) {
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out.writeBytes(b2,0,m);
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assertEquals("output length must match",n,out.length());
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RAMInputStream in = new RAMInputStream("testcase", f);
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assertEquals("input length must match",n,in.length());
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//System.out.println("input length = "+in.length()+" % 1024 = "+in.length()%1024);
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for (int j=0; j<L; j++) {
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long loc = n - (L-j)*m;
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for (int i=0; i<m; i++) {
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byte bt = in.readByte();
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byte expected = (byte) (1 + j + (i & 0x0003F));
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assertEquals("must read same value that was written! j="+j+" i="+i,expected,bt);