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AR-383: Optimized overwrite behaviour for ContentWriter. Content will only be duplicated for the writes if explicitly requesting a random-access file without the truncate option

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git-svn-id: https://svn.alfresco.com/repos/alfresco-enterprise/alfresco/HEAD/root@2254 c4b6b30b-aa2e-2d43-bbcb-ca4b014f7261
This commit is contained in:
Derek Hulley
2006-01-31 05:40:51 +00:00
parent cdede309e5
commit 9bac8270f4
14 changed files with 571 additions and 242 deletions
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54
source/java/org/alfresco/repo/content/AbstractContentReadWriteTest.java
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@@ -28,6 +28,8 @@ import java.nio.channels.FileChannel;
import java.nio.channels.ReadableByteChannel;
import java.util.Set;
import javax.transaction.UserTransaction;
import junit.framework.TestCase;
import org.alfresco.repo.transaction.DummyTransactionService;
@@ -35,6 +37,9 @@ import org.alfresco.service.cmr.repository.ContentIOException;
import org.alfresco.service.cmr.repository.ContentReader;
import org.alfresco.service.cmr.repository.ContentStreamListener;
import org.alfresco.service.cmr.repository.ContentWriter;
import org.alfresco.service.transaction.TransactionService;
import org.alfresco.util.ApplicationContextHelper;
import org.springframework.context.ApplicationContext;
/**
* Abstract base class that provides a set of tests for implementations
@@ -47,7 +52,11 @@ import org.alfresco.service.cmr.repository.ContentWriter;
*/
public abstract class AbstractContentReadWriteTest extends TestCase
{
private static final ApplicationContext ctx = ApplicationContextHelper.getApplicationContext();
protected TransactionService transactionService;
private String contentUrl;
private UserTransaction txn;
public AbstractContentReadWriteTest()
{
@@ -58,6 +67,14 @@ public abstract class AbstractContentReadWriteTest extends TestCase
public void setUp() throws Exception
{
contentUrl = AbstractContentStore.createNewUrl();
transactionService = (TransactionService) ctx.getBean("TransactionService");
txn = transactionService.getUserTransaction();
txn.begin();
}
public void tearDown() throws Exception
{
txn.rollback();
}
/**
@@ -539,16 +556,8 @@ public abstract class AbstractContentReadWriteTest extends TestCase
public void testRandomAccessWrite() throws Exception
{
ContentWriter writer = getWriter();
if (!(writer instanceof RandomAccessContent))
{
// not much to do here
return;
}
RandomAccessContent randomWriter = (RandomAccessContent) writer;
// check that we are allowed to write
assertTrue("Expected random access writing", randomWriter.canWrite());
FileChannel fileChannel = randomWriter.getChannel();
FileChannel fileChannel = writer.getFileChannel(true);
assertNotNull("No channel given", fileChannel);
// check that no other content access is allowed
@@ -584,6 +593,22 @@ public abstract class AbstractContentReadWriteTest extends TestCase
{
assertEquals("Content doesn't match", content[i], buffer.get(i));
}
// get a new writer from the store, using the existing content and perform a truncation check
ContentWriter writerTruncate = getStore().getWriter(writer.getReader(), AbstractContentStore.createNewUrl());
assertEquals("Content size incorrect", 0, writerTruncate.getSize());
// get the channel with truncation
FileChannel fcTruncate = writerTruncate.getFileChannel(true);
fcTruncate.close();
assertEquals("Content not truncated", 0, writerTruncate.getSize());
// get a new writer from the store, using the existing content and perform a non-truncation check
ContentWriter writerNoTruncate = getStore().getWriter(writer.getReader(), AbstractContentStore.createNewUrl());
assertEquals("Content size incorrect", 0, writerNoTruncate.getSize());
// get the channel without truncation
FileChannel fcNoTruncate = writerNoTruncate.getFileChannel(false);
fcNoTruncate.close();
assertEquals("Content was truncated", writer.getSize(), writerNoTruncate.getSize());
}
/**
@@ -599,16 +624,8 @@ public abstract class AbstractContentReadWriteTest extends TestCase
byte[] bytes = content.getBytes();
writer.putContent(content);
ContentReader reader = writer.getReader();
if (!(reader instanceof RandomAccessContent))
{
// not much to do here
return;
}
RandomAccessContent randomReader = (RandomAccessContent) reader;
// check that we are NOT allowed to write
assertFalse("Expected read-only random access", randomReader.canWrite());
FileChannel fileChannel = randomReader.getChannel();
FileChannel fileChannel = reader.getFileChannel();
assertNotNull("No channel given", fileChannel);
// check that no other content access is allowed
@@ -631,5 +648,6 @@ public abstract class AbstractContentReadWriteTest extends TestCase
buffer.get(bytes);
String checkContent = new String(bytes);
assertEquals("Content read failure", content, checkContent);
fileChannel.close();
}
}