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提交 5df4131c authored 作者: Thomas Mueller's avatar Thomas Mueller
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New experimental page store.

上级 5785fdf3
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正在显示 包含 617 行增加 和 379 行删除
h2/src/main/org/h2/index/Page.java
浏览文件 @ 5df4131c
......@@ -57,9 +57,14 @@ public class Page {
public static final int TYPE_FREE_LIST = 7;
/**
* A log page.
* A stream trunk page.
*/
public static final int TYPE_LOG = 8;
public static final int TYPE_STREAM_TRUNK = 8;
/**
* A stream data page.
*/
public static final int TYPE_STREAM_DATA = 9;
/**
* This is a root page.
......
h2/src/main/org/h2/store/PageFreeList.java
浏览文件 @ 5df4131c
......@@ -26,25 +26,15 @@ public class PageFreeList extends Record {
private final PageStore store;
private final BitField used = new BitField();
private final int firstAddressed;
private final int pageCount;
private final int nextPage;
private boolean full;
private DataPage data;
PageFreeList(PageStore store, int pageId, int firstAddressed) {
PageFreeList(PageStore store, int pageId) {
setPos(pageId);
this.store = store;
this.firstAddressed = firstAddressed;
pageCount = (store.getPageSize() - DATA_START) * 8;
for (int i = firstAddressed; i <= pageId; i++) {
used.set(getAddress(i));
}
nextPage = firstAddressed + pageCount;
}
private int getAddress(int pageId) {
return pageId - firstAddressed;
used.set(pageId);
}
/**
......@@ -54,20 +44,16 @@ public class PageFreeList extends Record {
*/
int allocate() throws SQLException {
if (full) {
PageFreeList next = getNext();
if (next == null) {
return -1;
}
return next.allocate();
return -1;
}
int free = used.nextClearBit(0);
if (free > pageCount) {
full = true;
return allocate();
return -1;
}
used.set(free);
store.updateRecord(this, true, data);
return free + firstAddressed;
return free + getPos();
}
/**
......@@ -81,25 +67,8 @@ public class PageFreeList extends Record {
return allocate(pos);
}
public int getLastUsed() throws SQLException {
if (nextPage < store.getPageCount()) {
PageFreeList next = getNext();
// TODO avoid recursion
return next.getLastUsed();
}
return used.getLastSetBit() + firstAddressed;
}
private PageFreeList getNext() throws SQLException {
PageFreeList next = (PageFreeList) store.getRecord(nextPage);
if (next == null) {
if (nextPage < store.getPageCount()) {
next = new PageFreeList(store, nextPage, nextPage);
next.read();
store.updateRecord(next, false, null);
}
}
return next;
int getLastUsed() {
return used.getLastSetBit() + getPos();
}
/**
......@@ -109,16 +78,9 @@ public class PageFreeList extends Record {
* @return the page id, or -1
*/
int allocate(int pos) throws SQLException {
if (pos - firstAddressed > pageCount) {
PageFreeList next = getNext();
if (next == null) {
return -1;
}
return next.allocate(pos);
}
int idx = pos - firstAddressed;
int idx = pos - getPos();
if (idx >= 0 && !used.get(idx)) {
used.set(pos - firstAddressed);
used.set(idx);
store.updateRecord(this, true, data);
}
return pos;
......@@ -131,7 +93,7 @@ public class PageFreeList extends Record {
*/
void free(int pageId) throws SQLException {
full = false;
used.clear(pageId - firstAddressed);
used.clear(pageId - getPos());
store.updateRecord(this, true, data);
}
......@@ -153,6 +115,7 @@ public class PageFreeList extends Record {
for (int i = 0; i < pageCount; i += 8) {
used.setByte(i, data.readByte());
}
full = used.nextClearBit(0) >= pageCount * 8;
}
public int getByteCount(DataPage dummy) {
......@@ -170,4 +133,18 @@ public class PageFreeList extends Record {
store.writePage(getPos(), data);
}
boolean isFull() {
return full;
}
/**
* Get the number of pages that can fit in a free list.
*
* @param pageSize the page size
* @return the number of pages
*/
static int getPagesAddressed(int pageSize) {
return (pageSize - DATA_START) * 8;
}
}
h2/src/main/org/h2/store/PageInputStream.java
浏览文件 @ 5df4131c
......@@ -6,49 +6,30 @@
*/
package org.h2.store;
import java.io.EOFException;
import java.io.IOException;
import java.io.InputStream;
import java.sql.SQLException;
import org.h2.index.Page;
import org.h2.message.Message;
import org.h2.message.Trace;
/**
* An output stream that writes into a page store.
* The format is:
* <ul><li>0-3: parent page id
* </li><li>4-4: page type
* </li><li>5-5: stream id
* </li><li>6-9: the next page (if there is one) or length
* </li><li>10-remainder: data
* </li></ul>
* An input stream that reads from a page store.
*/
public class PageInputStream extends InputStream {
/**
* The number of header bytes per stream page.
*/
public static final int OVERHEAD = 10;
private PageStore store;
private final Trace trace;
private int parentPage;
private int type;
private int streamId = -1;
private int nextPage;
private DataPage page;
private int trunkNext;
private PageStreamTrunk trunk;
private PageStreamData data;
private boolean endOfFile;
private int remaining;
private byte[] buffer = new byte[1];
public PageInputStream(PageStore store, int parentPage, int headPage, int type) {
public PageInputStream(PageStore store, int trunkPage) {
this.store = store;
this.trace = store.getTrace();
this.parentPage = parentPage;
this.type = type;
nextPage = headPage;
page = store.createDataPage();
this.trunkNext = trunkPage;
}
public int read() throws IOException {
......@@ -78,53 +59,47 @@ public class PageInputStream extends InputStream {
}
private int readBlock(byte[] buff, int off, int len) throws IOException {
fillBuffer();
if (endOfFile) {
return -1;
try {
fillBuffer();
if (endOfFile) {
return -1;
}
int l = Math.min(remaining, len);
data.read(buff, off, l);
remaining -= l;
return l;
} catch (SQLException e) {
throw Message.convertToIOException(e);
}
int l = Math.min(remaining, len);
page.read(buff, off, l);
remaining -= l;
return l;
}
private void fillBuffer() throws IOException {
private void fillBuffer() throws SQLException {
if (remaining > 0 || endOfFile) {
return;
}
if (nextPage == 0) {
if (trunkNext == 0) {
endOfFile = true;
return;
}
page.reset();
try {
store.readPage(nextPage, page);
} catch (SQLException e) {
throw Message.convertToIOException(e);
}
int p = page.readInt();
int t = page.readByte();
int id = page.readByte();
if (streamId == -1) {
// set the stream id on the first page
streamId = id;
if (trunk == null) {
trunk = new PageStreamTrunk(store, trunkNext);
trunk.read();
}
boolean last = (t & Page.FLAG_LAST) != 0;
t &= ~Page.FLAG_LAST;
if (type != t || p != parentPage || id != streamId) {
throw new EOFException();
}
parentPage = nextPage;
if (last) {
nextPage = 0;
remaining = page.readInt();
} else {
nextPage = page.readInt();
remaining = store.getPageSize() - page.length();
int next;
while (true) {
next = trunk.getNextPage();
if (next >= 0) {
break;
}
trunk = new PageStreamTrunk(store, trunkNext);
trunk.read();
}
if (trace.isDebugEnabled()) {
trace.debug("pageIn.readPage " + parentPage + " next:" + nextPage);
trace.debug("pageIn.readPage " + next);
}
data = new PageStreamData(store, next, 0);
data.read();
remaining = data.getLength();
}
}
h2/src/main/org/h2/store/PageLog.java
浏览文件 @ 5df4131c
......@@ -59,7 +59,6 @@ public class PageLog {
public static final int REMOVE = 4;
private final PageStore store;
private int id;
private int pos;
private Trace trace;
......@@ -70,7 +69,6 @@ public class PageLog {
private DataPage data;
private long operation;
private BitField undo = new BitField();
private int[] reservedPages = new int[3];
PageLog(PageStore store, int firstPage) {
this.store = store;
......@@ -82,35 +80,20 @@ public class PageLog {
/**
* Open the log for writing. For an existing database, the recovery
* must be run first.
*
* @param id the log id
*/
void openForWriting(int id) throws SQLException {
this.id = id;
trace.debug("log openForWriting " + id + " firstPage:" + firstPage);
pageOut = new PageOutputStream(store, 0, firstPage, Page.TYPE_LOG, id, true);
void openForWriting() {
trace.debug("log openForWriting firstPage:" + firstPage);
pageOut = new PageOutputStream(store, firstPage);
out = new DataOutputStream(pageOut);
try {
out.writeInt(id);
out.flush();
} catch (IOException e) {
throw Message.convertIOException(e, null);
}
}
/**
* Open the log for reading. This will also read the log id.
*
* @return the log id
* Open the log for reading.
*/
int openForReading() {
in = new DataInputStream(new PageInputStream(store, 0, firstPage, Page.TYPE_LOG));
try {
id = in.readInt();
trace.debug("log openForReading " + id + " firstPage:" + firstPage + " id:" + id);
return id;
} catch (IOException e) {
return 0;
void openForReading() {
in = new DataInputStream(new PageInputStream(store, firstPage));
if (trace.isDebugEnabled()) {
trace.debug("log openForReading firstPage:" + firstPage);
}
}
......@@ -123,8 +106,9 @@ public class PageLog {
*/
void recover(boolean undo) throws SQLException {
if (trace.isDebugEnabled()) {
trace.debug("log recover " + id + " undo:" + undo);
trace.debug("log recover undo:" + undo);
}
int logId = 0;
DataPage data = store.createDataPage();
try {
pos = 0;
......@@ -148,7 +132,7 @@ public class PageLog {
int tableId = in.readInt();
Row row = readRow(in, data);
if (!undo) {
if (store.isSessionCommitted(sessionId, id, pos)) {
if (store.isSessionCommitted(sessionId, logId, pos)) {
if (trace.isDebugEnabled()) {
trace.debug("log redo " + (x == ADD ? "+" : "-") + " table:" + tableId + " " + row);
}
......@@ -162,10 +146,10 @@ public class PageLog {
} else if (x == COMMIT) {
int sessionId = in.readInt();
if (trace.isDebugEnabled()) {
trace.debug("log commit " + sessionId + " id:" + id + " pos:" + pos);
trace.debug("log commit " + sessionId + " pos:" + pos);
}
if (undo) {
store.setLastCommitForSession(sessionId, id, pos);
store.setLastCommitForSession(sessionId, logId, pos);
}
} else {
if (trace.isDebugEnabled()) {
......@@ -221,7 +205,7 @@ public class PageLog {
trace.debug("log undo " + pageId);
}
undo.set(pageId);
reservePages(3);
pageOut.prepareWriting(store.getPageSize() * 3);
out.write(UNDO);
out.writeInt(pageId);
out.write(page.getBytes(), 0, store.getPageSize());
......@@ -230,19 +214,6 @@ public class PageLog {
}
}
private void reservePages(int pageCount) throws SQLException {
int todoThisIsSlow;
if (pageCount > reservedPages.length) {
reservedPages = new int[pageCount];
}
for (int i = 0; i < pageCount; i++) {
reservedPages[i] = store.allocatePage(true);
}
for (int i = pageCount - 1; i >= 0; i--) {
store.freePage(reservedPages[i], false, null);
}
}
/**
* Mark a committed transaction.
*
......@@ -258,7 +229,7 @@ public class PageLog {
// database already closed
return;
}
reservePages(1);
pageOut.prepareWriting(store.getPageSize());
out.write(COMMIT);
out.writeInt(session.getId());
if (log.getFlushOnEachCommit()) {
......@@ -291,8 +262,7 @@ public class PageLog {
int todoWriteIntoOutputDirectly;
row.write(data);
reservePages(3 + data.length() / (store.getPageSize() - PageInputStream.OVERHEAD));
pageOut.prepareWriting(data.length() + store.getPageSize());
out.write(add ? ADD : REMOVE);
out.writeInt(session.getId());
out.writeInt(tableId);
......@@ -309,7 +279,7 @@ public class PageLog {
*/
void close() throws SQLException {
try {
trace.debug("log close " + id);
trace.debug("log close");
if (out != null) {
out.close();
}
......@@ -324,11 +294,11 @@ public class PageLog {
*
* @param id the new log id
*/
private void reopen(int id) throws SQLException {
private void reopen() throws SQLException {
try {
trace.debug("log reopen");
out.close();
openForWriting(id);
openForWriting();
flush();
int todoDeleteOrReUsePages;
} catch (IOException e) {
......@@ -347,15 +317,6 @@ public class PageLog {
}
}
/**
* Get the log id.
*
* @return the log id
*/
int getId() {
return id;
}
/**
* Flush and close the log.
*/
......
h2/src/main/org/h2/store/PageOutputStream.java
浏览文件 @ 5df4131c
......@@ -9,50 +9,69 @@ package org.h2.store;
import java.io.IOException;
import java.io.OutputStream;
import java.sql.SQLException;
import org.h2.index.Page;
import org.h2.message.Message;
import org.h2.message.Trace;
import org.h2.util.IntArray;
/**
* An output stream that writes into a page store.
*/
public class PageOutputStream extends OutputStream {
private final Trace trace;
private PageStore store;
private int type;
private int parentPage;
private int pageId;
private int nextPage;
private DataPage page;
private final Trace trace;
private int trunkPageId;
private int trunkNext;
private IntArray reservedPages = new IntArray();
private PageStreamTrunk trunk;
private PageStreamData data;
private int reserved;
private int remaining;
private final boolean allocateAtEnd;
private byte[] buffer = new byte[1];
private boolean needFlush;
private final int streamId;
private boolean writing;
/**
* Create a new page output stream.
*
* @param store the page store
* @param parentPage the parent page id
* @param headPage the first page
* @param type the page type
* @param streamId the stream identifier
* @param allocateAtEnd whether new pages should be allocated at the end of
* the file
* @param trunkPage the first trunk page (already allocated)
*/
public PageOutputStream(PageStore store, int parentPage, int headPage, int type, int streamId, boolean allocateAtEnd) {
public PageOutputStream(PageStore store, int trunkPage) {
this.trace = store.getTrace();
this.store = store;
this.parentPage = parentPage;
this.pageId = headPage;
this.type = type;
this.allocateAtEnd = allocateAtEnd;
this.streamId = streamId;
page = store.createDataPage();
initPage();
this.trunkPageId = trunkPage;
}
/**
* Allocate the required pages so that no pages need to be allocated while
* writing.
*
* @param minBuffer the number of bytes to allocate
*/
void prepareWriting(int minBuffer) throws SQLException {
if (reserved < minBuffer) {
int pageSize = store.getPageSize();
int capacityPerPage = PageStreamData.getCapacity(pageSize);
int pages = PageStreamTrunk.getPagesAddressed(pageSize);
// allocate x data pages
int pagesToAllocate = pages;
// the first trunk page is already allocated
if (reservedPages.size() == 0) {
reservedPages.add(trunkPageId);
}
int totalCapacity = pages * capacityPerPage;
while (totalCapacity < minBuffer) {
pagesToAllocate += pagesToAllocate;
totalCapacity += totalCapacity;
}
// allocate the next trunk page as well
pagesToAllocate++;
for (int i = 0; i < pagesToAllocate; i++) {
int page = store.allocatePage();
reservedPages.add(page);
}
}
}
public void write(int b) throws IOException {
......@@ -64,13 +83,27 @@ public class PageOutputStream extends OutputStream {
write(b, 0, b.length);
}
private void initPage() {
page.reset();
page.writeInt(parentPage);
page.writeByte((byte) type);
page.writeByte((byte) streamId);
page.writeInt(0);
remaining = store.getPageSize() - page.length();
private void initNextData() {
int nextData = trunk == null ? -1 : trunk.getNextPage();
if (nextData < 0) {
int parent = trunkPageId;
if (trunkNext == 0) {
trunkPageId = reservedPages.get(0);
reservedPages.remove(0);
} else {
trunkPageId = trunkNext;
}
int len = PageStreamTrunk.getPagesAddressed(store.getPageSize());
int[] pageIds = new int[len];
for (int i = 0; i < len; i++) {
pageIds[i] = reservedPages.get(i);
}
trunkNext = reservedPages.get(len);
trunk = new PageStreamTrunk(store, parent, trunkPageId, trunkNext, pageIds);
reservedPages.removeRange(0, len + 1);
}
data = new PageStreamData(store, trunk.getNextPage(), trunk.getPos());
data.initWrite();
}
public void write(byte[] b, int off, int len) throws IOException {
......@@ -78,31 +111,24 @@ public class PageOutputStream extends OutputStream {
return;
}
if (writing) {
throw Message.throwInternalError("writing while still writing");
Message.throwInternalError("writing while still writing");
}
writing = true;
try {
while (len >= remaining) {
page.write(b, off, remaining);
off += remaining;
len -= remaining;
try {
nextPage = store.allocatePage(allocateAtEnd);
} catch (SQLException e) {
throw Message.convertToIOException(e);
while (len >= 0) {
int l = data.write(b, off, len);
if (l <= len) {
data.write(null);
initNextData();
}
page.setPos(4);
page.writeByte((byte) type);
page.writeByte((byte) streamId);
page.writeInt(nextPage);
storePage();
parentPage = pageId;
pageId = nextPage;
initPage();
reserved -= l;
off += l;
len -= l;
}
page.write(b, off, len);
needFlush = true;
remaining -= len;
} catch (SQLException e) {
throw Message.convertToIOException(e);
} finally {
writing = false;
}
......@@ -111,9 +137,9 @@ public class PageOutputStream extends OutputStream {
private void storePage() throws IOException {
try {
if (trace.isDebugEnabled()) {
trace.debug("pageOut.storePage " + pageId + " next:" + nextPage);
trace.debug("pageOut.storePage " + data.getPos());
}
store.writePage(pageId, page);
data.write(null);
} catch (SQLException e) {
throw Message.convertToIOException(e);
}
......@@ -121,12 +147,6 @@ public class PageOutputStream extends OutputStream {
public void flush() throws IOException {
if (needFlush) {
int len = page.length();
page.setPos(4);
page.writeByte((byte) (type | Page.FLAG_LAST));
page.writeByte((byte) streamId);
page.writeInt(store.getPageSize() - remaining - 9);
page.setPos(len);
storePage();
needFlush = false;
}
......
h2/src/main/org/h2/store/PageStreamData.java 0 → 100644
浏览文件 @ 5df4131c
/*
* Copyright 2004-2009 H2 Group. Multiple-Licensed under the H2 License,
* Version 1.0, and under the Eclipse Public License, Version 1.0
* (http://h2database.com/html/license.html).
* Initial Developer: H2 Group
*/
package org.h2.store;
import java.sql.SQLException;
import org.h2.constant.ErrorCode;
import org.h2.index.Page;
import org.h2.message.Message;
/**
* A data page of a stream. The format is:
* <ul>
* <li>0-3: the trunk page id</li>
* <li>4-4: page type</li>
* <li>5-8: the number of bytes used</li>
* <li>9-remainder: data</li>
* </ul>
*/
public class PageStreamData extends Record {
private static final int LENGTH_START = 5;
private static final int DATA_START = 9;
private final PageStore store;
private final int trunk;
private DataPage data;
private int remaining;
private int length;
PageStreamData(PageStore store, int pageId, int trunk) {
setPos(pageId);
this.store = store;
this.trunk = trunk;
}
/**
* Read the page from the disk.
*/
void read() throws SQLException {
data = store.createDataPage();
store.readPage(getPos(), data);
int t = data.readByte();
if (t != Page.TYPE_STREAM_DATA) {
throw Message.getSQLException(ErrorCode.FILE_CORRUPTED_1, "pos:" + getPos() + " type:" + t +
" expected type:" + Page.TYPE_STREAM_DATA);
}
length = data.readInt();
}
public int getByteCount(DataPage dummy) {
return store.getPageSize();
}
/**
* Write the header data.
*/
void initWrite() {
data = store.createDataPage();
data.writeInt(trunk);
data.writeByte((byte) Page.TYPE_STREAM_DATA);
data.writeInt(0);
remaining = store.getPageSize() - data.length();
}
/**
* Write the data to the buffer.
*
* @param buff the source data
* @param off the offset in the source buffer
* @param len the number of bytes to write
* @return the number of bytes written
*/
int write(byte[] buff, int offset, int len) {
int max = Math.min(remaining, len);
data.write(buff, offset, max);
length += max;
remaining -= max;
return max;
}
public void write(DataPage buff) throws SQLException {
data.setInt(LENGTH_START, length);
store.writePage(getPos(), data);
}
/**
* Get the number of bytes that fit in a page.
*
* @param pageSize the page size
* @return the number of bytes
*/
static int getCapacity(int pageSize) {
return pageSize - DATA_START;
}
int getLength() {
return length;
}
/**
* Read the next bytes from the buffer.
*
* @param buff the target buffer
* @param off the offset in the target buffer
* @param len the number of bytes to read
*/
void read(byte[] buff, int off, int len) {
data.read(buff, off, len);
}
}
\ No newline at end of file
h2/src/main/org/h2/store/PageStreamTrunk.java 0 → 100644
浏览文件 @ 5df4131c
/*
* Copyright 2004-2009 H2 Group. Multiple-Licensed under the H2 License,
* Version 1.0, and under the Eclipse Public License, Version 1.0
* (http://h2database.com/html/license.html).
* Initial Developer: H2 Group
*/
package org.h2.store;
import java.sql.SQLException;
import org.h2.constant.ErrorCode;
import org.h2.index.Page;
import org.h2.message.Message;
/**
* A trunk page of a stream. It contains the page numbers of the stream, and
* the page number of the next trunk. The format is:
* <ul>
* <li>0-3: the last trunk page, or 0 if none</li>
* <li>4-4: page type</li>
* <li>5-8: the next trunk page</li>
* <li>9-12: the number of pages</li>
* <li>13-remainder: page ids</li>
* </ul>
*/
public class PageStreamTrunk extends Record {
private static final int DATA_START = 13;
private final PageStore store;
private int parent;
private int nextTrunk;
private int[] pageIds;
private int pageCount;
private DataPage data;
private int index;
PageStreamTrunk(PageStore store, int parent, int pageId, int next, int[] pageIds) {
setPos(pageId);
this.parent = parent;
this.store = store;
this.nextTrunk = next;
this.pageCount = pageIds.length;
this.pageIds = pageIds;
}
public PageStreamTrunk(PageStore store, int pageId) {
setPos(pageId);
this.store = store;
}
/**
* Read the page from the disk.
*/
void read() throws SQLException {
data = store.createDataPage();
store.readPage(getPos(), data);
parent = data.readInt();
int t = data.readByte();
if (t != Page.TYPE_STREAM_TRUNK) {
throw Message.getSQLException(ErrorCode.FILE_CORRUPTED_1, "pos:" + getPos() + " type:" + t + " parent:" + parent
+ " expected type:" + Page.TYPE_STREAM_TRUNK);
}
nextTrunk = data.readInt();
pageCount = data.readInt();
for (int i = 0; i < pageCount; i++) {
pageIds[i] = data.readInt();
}
}
void setNextPage(int page) {
pageIds[index++] = page;
}
int getNextPage() {
if (index >= pageIds.length) {
return -1;
}
return pageIds[index++];
}
int getNextTrunk() {
return nextTrunk;
}
public int getByteCount(DataPage dummy) {
return store.getPageSize();
}
public void write(DataPage buff) throws SQLException {
data = store.createDataPage();
data.writeInt(parent);
data.writeByte((byte) Page.TYPE_STREAM_TRUNK);
data.writeInt(nextTrunk);
data.writeInt(pageCount);
for (int i = 0; i < pageCount; i++) {
data.writeInt(pageIds[i]);
}
store.writePage(getPos(), data);
}
/**
* Get the number of pages that can be addressed in a stream trunk page.
*
* @param pageSize the page size
* @return the number of pages
*/
static int getPagesAddressed(int pageSize) {
return (pageSize - DATA_START) / 4;
}
}
h2/src/main/org/h2/tools/Recover.java
浏览文件 @ 5df4131c
......@@ -790,9 +790,11 @@ public class Recover extends Tool implements DataHandler {
case Page.TYPE_FREE_LIST:
writer.println("-- page " + page + ": free list " + (last ? "(last)" : ""));
break;
case Page.TYPE_LOG:
writer.println("-- page " + page + ": log " + (last ? "(last)" : ""));
dumpPageLog(writer, s, last);
case Page.TYPE_STREAM_TRUNK:
writer.println("-- page " + page + ": log trunk");
break;
case Page.TYPE_STREAM_DATA:
writer.println("-- page " + page + ": log data");
break;
default:
writer.println("-- page " + page + ": ERROR unknown type " + type);
......@@ -800,9 +802,9 @@ public class Recover extends Tool implements DataHandler {
}
}
writeSchema(writer);
for (int i = 0; i < PageStore.LOG_COUNT; i++) {
dumpPageLogStream(writer, store, logHead + i, pageSize);
}
// for (int i = 0; i < PageStore.LOG_COUNT; i++) {
// dumpPageLogStream(writer, store, logHead + i, pageSize);
// }
writer.close();
} catch (Throwable e) {
writeError(writer, e);
......@@ -815,7 +817,8 @@ public class Recover extends Tool implements DataHandler {
private void dumpPageLogStream(PrintWriter writer, FileStore store, int logHead, int pageSize) throws IOException, SQLException {
DataPage s = DataPage.create(this, pageSize);
DataInputStream in = new DataInputStream(
new PageInputStream(writer, this, store, logHead, pageSize, 0, Page.TYPE_LOG)
new PageInputStream(writer, this, store, logHead, pageSize, 0,
Page.TYPE_STREAM_TRUNK)
);
int logId = in.readInt();
writer.println("-- log " + logId);
......@@ -843,7 +846,6 @@ public class Recover extends Tool implements DataHandler {
break;
}
}
}
private void setStorage(int storageId) {
......
h2/src/main/org/h2/util/IntArray.java
浏览文件 @ 5df4131c
......@@ -310,4 +310,20 @@ public class IntArray {
return buff.append('}').toString();
}
/**
* Remove a number of elements.
*
* @param fromIndex the index of the first item to remove
* @param toIndex upper bound (exclusive)
*/
public void removeRange(int fromIndex, int toIndex) {
if (SysProperties.CHECK) {
if (fromIndex > toIndex || toIndex >= size) {
throw new ArrayIndexOutOfBoundsException("from=" + fromIndex + " to=" + toIndex + " size=" + size);
}
}
System.arraycopy(data, toIndex, data, fromIndex, size - toIndex);
size -= toIndex - fromIndex;
}
}
h2/src/test/org/h2/test/unit/TestIntArray.java
浏览文件 @ 5df4131c
......@@ -28,6 +28,16 @@ public class TestIntArray extends TestBase {
public void test() {
testInit();
testRandom();
testRemoveRange();
}
private void testRemoveRange() {
IntArray array = new IntArray(new int[] {1, 2, 3, 4, 5});
array.removeRange(1, 3);
assertEquals(3, array.size());
assertEquals(1, array.get(0));
assertEquals(4, array.get(1));
assertEquals(5, array.get(2));
}
private void testInit() {
......
h2/src/test/org/h2/test/unit/TestPageStore.java
浏览文件 @ 5df4131c
......@@ -313,7 +313,7 @@ public class TestPageStore extends TestBase {
if (file) {
out = new BufferedOutputStream(new FileOutputStream(f), 4 * 1024);
} else {
out = new PageOutputStream(store, 0, head, Page.TYPE_LOG, 0, false);
out = new PageOutputStream(store, 0);
}
for (int i = 0; i < count; i++) {
out.write(buff);
......@@ -322,7 +322,7 @@ public class TestPageStore extends TestBase {
if (file) {
in = new BufferedInputStream(new FileInputStream(f), 4 * 1024);
} else {
in = new PageInputStream(store, 0, head, Page.TYPE_LOG);
in = new PageInputStream(store, 0);
}
while (true) {
int len = in.read(buff);
......@@ -353,14 +353,14 @@ public class TestPageStore extends TestBase {
byte[] data = new byte[len];
random.nextBytes(data);
int head = store.allocatePage();
PageOutputStream out = new PageOutputStream(store, 0, head, Page.TYPE_LOG, 0, false);
PageOutputStream out = new PageOutputStream(store, 0);
for (int p = 0; p < len;) {
int l = len == 0 ? 0 : Math.min(len - p, random.nextInt(len / 10));
out.write(data, p, l);
p += l;
}
out.close();
PageInputStream in = new PageInputStream(store, 0, head, Page.TYPE_LOG);
PageInputStream in = new PageInputStream(store, 0);
byte[] data2 = new byte[len];
for (int off = 0;;) {
int l = random.nextInt(1 + len / 10) + 1;
......
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