/*-
* See the file LICENSE for redistribution information.
*
* Copyright (c) 2002-2005
* Sleepycat Software. All rights reserved.
*
* $Id: PrintFileReader.java,v 1.8 2004/12/22 14:11:33 linda Exp $
*/
package com.sleepycat.je.log;
import java.io.IOException;
import java.nio.ByteBuffer;
import com.sleepycat.je.DatabaseException;
import com.sleepycat.je.dbi.EnvironmentImpl;
import com.sleepycat.je.log.entry.LogEntry;
/**
* The PrintFileReader prints out the target log entries.
*/
public class PrintFileReader extends DumpFileReader {
/**
* Create this reader to start at a given LSN.
*/
public PrintFileReader(EnvironmentImpl env,
int readBufferSize,
long startLsn,
long finishLsn,
String entryTypes,
String txnIds,
boolean verbose)
throws IOException, DatabaseException {
super(env,
readBufferSize,
startLsn,
finishLsn,
entryTypes,
txnIds,
verbose);
}
/**
* This reader prints the log entry item.
*/
protected boolean processEntry(ByteBuffer entryBuffer)
throws DatabaseException {
/* Figure out what kind of log entry this is */
LogEntryType lastEntryType =
LogEntryType.findType(currentEntryTypeNum,
currentEntryTypeVersion);
/* Print out a common header for each log item */
StringBuffer sb = new StringBuffer();
sb.append("<entry lsn=\"0x").append
(Long.toHexString(readBufferFileNum));
sb.append("/0x").append
(Long.toHexString(currentEntryOffset));
sb.append("\" type=\"").append(lastEntryType);
if (LogEntryType.isProvisional(currentEntryTypeVersion)) {
sb.append("\" isProvisional=\"true");
}
sb.append("\" prev=\"0x");
sb.append(Long.toHexString(currentEntryPrevOffset));
if (verbose) {
sb.append("\" size=\"").append(currentEntrySize);
sb.append("\" cksum=\"").append(currentEntryChecksum);
}
sb.append("\">");
/* Read the entry and dump it into a string buffer. */
LogEntry entry = lastEntryType.getSharedLogEntry();
entry.readEntry(entryBuffer, currentEntrySize,
currentEntryTypeVersion, true);
boolean dumpIt = true;
if (targetTxnIds.size() > 0) {
if (entry.isTransactional()) {
if (!targetTxnIds.contains
(new Long(entry.getTransactionId()))) {
/* Not in the list of txn ids. */
dumpIt = false;
}
} else {
/* If -tx spec'd and not a transactional entry, don't dump. */
dumpIt = false;
}
}
if (dumpIt) {
entry.dumpEntry(sb, verbose);
sb.append("</entry>");
System.out.println(sb.toString());
}
return true;
}
}