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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.Arrays;
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import java.util.Collections;
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import java.util.HashSet;
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import org.apache.lucene.analysis.MockAnalyzer;
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import org.apache.lucene.index.IndexFileNames;
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import org.apache.lucene.index.IndexReader;
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import org.apache.lucene.index.IndexWriter;
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import org.apache.lucene.index.IndexWriterConfig;
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import org.apache.lucene.index.TestIndexWriterReader;
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import org.apache.lucene.util.LuceneTestCase;
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import org.apache.lucene.util._TestUtil;
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public class TestFileSwitchDirectory extends LuceneTestCase {
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* Test if writing doc stores to disk and everything else to ram works.
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public void testBasic() throws IOException {
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Set<String> fileExtensions = new HashSet<String>();
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fileExtensions.add(IndexFileNames.FIELDS_EXTENSION);
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fileExtensions.add(IndexFileNames.FIELDS_INDEX_EXTENSION);
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MockDirectoryWrapper primaryDir = new MockDirectoryWrapper(random, new RAMDirectory());
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primaryDir.setCheckIndexOnClose(false); // only part of an index
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MockDirectoryWrapper secondaryDir = new MockDirectoryWrapper(random, new RAMDirectory());
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secondaryDir.setCheckIndexOnClose(false); // only part of an index
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FileSwitchDirectory fsd = new FileSwitchDirectory(fileExtensions, primaryDir, secondaryDir, true);
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IndexWriter writer = new IndexWriter(
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new IndexWriterConfig(TEST_VERSION_CURRENT, new MockAnalyzer(random)).
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setMergePolicy(newLogMergePolicy(false))
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TestIndexWriterReader.createIndexNoClose(true, "ram", writer);
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IndexReader reader = IndexReader.open(writer, true);
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assertEquals(100, reader.maxDoc());
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// we should see only fdx,fdt files here
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String[] files = primaryDir.listAll();
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assertTrue(files.length > 0);
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for (int x=0; x < files.length; x++) {
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String ext = FileSwitchDirectory.getExtension(files[x]);
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assertTrue(fileExtensions.contains(ext));
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files = secondaryDir.listAll();
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assertTrue(files.length > 0);
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// we should not see fdx,fdt files here
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for (int x=0; x < files.length; x++) {
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String ext = FileSwitchDirectory.getExtension(files[x]);
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assertFalse(fileExtensions.contains(ext));
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files = fsd.listAll();
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for(int i=0;i<files.length;i++) {
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assertNotNull(files[i]);
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private Directory newFSSwitchDirectory(Set<String> primaryExtensions) throws IOException {
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Directory a = new SimpleFSDirectory(_TestUtil.getTempDir("foo"));
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Directory b = new SimpleFSDirectory(_TestUtil.getTempDir("bar"));
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FileSwitchDirectory switchDir = new FileSwitchDirectory(primaryExtensions, a, b, true);
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return new MockDirectoryWrapper(random, switchDir);
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// LUCENE-3380 -- make sure we get exception if the directory really does not exist.
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public void testNoDir() throws Throwable {
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Directory dir = newFSSwitchDirectory(Collections.<String>emptySet());
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IndexReader.open(dir, true);
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fail("did not hit expected exception");
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} catch (NoSuchDirectoryException nsde) {
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// LUCENE-3380 test that we can add a file, and then when we call list() we get it back
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public void testDirectoryFilter() throws IOException {
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Directory dir = newFSSwitchDirectory(Collections.<String>emptySet());
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String name = "file";
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dir.createOutput(name).close();
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assertTrue(dir.fileExists(name));
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assertTrue(Arrays.asList(dir.listAll()).contains(name));