| /** |
| * 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 org.apache.kahadb.page; |
| |
| import java.io.DataInputStream; |
| import java.io.DataOutputStream; |
| import java.io.File; |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.io.OutputStream; |
| import java.util.HashSet; |
| |
| import org.apache.kahadb.util.StringMarshaller; |
| |
| import junit.framework.TestCase; |
| |
| public class PageFileTest extends TestCase { |
| |
| public void testCRUD() throws IOException { |
| |
| PageFile pf = new PageFile(new File("target/test-data"), getName()); |
| pf.delete(); |
| pf.load(); |
| |
| HashSet<String> expected = new HashSet<String>(); |
| |
| // Insert some data into the page file. |
| Transaction tx = pf.tx(); |
| for (int i = 0; i < 100; i++) { |
| Page<String> page = tx.allocate(); |
| assertEquals(Page.PAGE_FREE_TYPE, page.getType()); |
| |
| String t = "page:" + i; |
| expected.add(t); |
| page.set(t); |
| tx.store(page, StringMarshaller.INSTANCE, false); |
| tx.commit(); |
| } |
| |
| // Reload it... |
| pf.unload(); |
| pf.load(); |
| tx = pf.tx(); |
| |
| // Iterate it to make sure they are still there.. |
| HashSet<String> actual = new HashSet<String>(); |
| for (Page<String> page : tx) { |
| tx.load(page, StringMarshaller.INSTANCE); |
| actual.add(page.get()); |
| } |
| assertEquals(expected, actual); |
| |
| // Remove the odd records.. |
| for (int i = 0; i < 100; i++) { |
| if (i % 2 == 0) { |
| break; |
| } |
| String t = "page:" + i; |
| expected.remove(t); |
| } |
| for (Page<String> page : tx) { |
| tx.load(page, StringMarshaller.INSTANCE); |
| if (!expected.contains(page.get())) { |
| tx.free(page); |
| } |
| } |
| tx.commit(); |
| |
| // Reload it... |
| pf.unload(); |
| pf.load(); |
| tx = pf.tx(); |
| |
| // Iterate it to make sure the even records are still there.. |
| actual.clear(); |
| for (Page<String> page : tx) { |
| tx.load(page, StringMarshaller.INSTANCE); |
| actual.add((String)page.get()); |
| } |
| assertEquals(expected, actual); |
| |
| // Update the records... |
| HashSet<String> t = expected; |
| expected = new HashSet<String>(); |
| for (String s : t) { |
| expected.add(s + ":updated"); |
| } |
| for (Page<String> page : tx) { |
| tx.load(page, StringMarshaller.INSTANCE); |
| page.set(page.get() + ":updated"); |
| tx.store(page, StringMarshaller.INSTANCE, false); |
| } |
| tx.commit(); |
| |
| // Reload it... |
| pf.unload(); |
| pf.load(); |
| tx = pf.tx(); |
| |
| // Iterate it to make sure the updated records are still there.. |
| actual.clear(); |
| for (Page<String> page : tx) { |
| tx.load(page, StringMarshaller.INSTANCE); |
| actual.add(page.get()); |
| } |
| assertEquals(expected, actual); |
| |
| pf.unload(); |
| } |
| |
| public void testStreams() throws IOException { |
| |
| PageFile pf = new PageFile(new File("target/test-data"), getName()); |
| pf.delete(); |
| pf.load(); |
| |
| Transaction tx = pf.tx(); |
| Page page = tx.allocate(); |
| tx.commit(); |
| |
| OutputStream pos = tx.openOutputStream(page, true); |
| DataOutputStream os = new DataOutputStream(pos); |
| for (int i = 0; i < 10000; i++) { |
| os.writeUTF("Test string:" + i); |
| } |
| |
| os.close(); |
| tx.commit(); |
| |
| // Reload the page file. |
| pf.unload(); |
| pf.load(); |
| tx = pf.tx(); |
| |
| InputStream pis = tx.openInputStream(page); |
| DataInputStream is = new DataInputStream(pis); |
| for (int i = 0; i < 10000; i++) { |
| assertEquals("Test string:" + i, is.readUTF()); |
| } |
| assertEquals(-1, is.read()); |
| is.close(); |
| |
| pf.unload(); |
| } |
| |
| public void testAddRollback() throws IOException { |
| |
| PageFile pf = new PageFile(new File("target/test-data"), getName()); |
| pf.delete(); |
| pf.load(); |
| |
| HashSet<String> expected = new HashSet<String>(); |
| |
| // Insert some data into the page file. |
| Transaction tx = pf.tx(); |
| for (int i = 0; i < 100; i++) { |
| Page<String> page = tx.allocate(); |
| assertEquals(Page.PAGE_FREE_TYPE, page.getType()); |
| |
| String t = "page:" + i; |
| page.set(t); |
| tx.store(page, StringMarshaller.INSTANCE, false); |
| |
| // Rollback every other insert. |
| if (i % 2 == 0) { |
| expected.add(t); |
| tx.commit(); |
| } else { |
| tx.rollback(); |
| } |
| |
| } |
| |
| // Reload it... |
| pf.unload(); |
| pf.load(); |
| tx = pf.tx(); |
| |
| // Iterate it to make sure they are still there.. |
| HashSet<String> actual = new HashSet<String>(); |
| for (Page<String> page : tx) { |
| tx.load(page, StringMarshaller.INSTANCE); |
| actual.add(page.get()); |
| } |
| assertEquals(expected, actual); |
| } |
| } |