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h2database
Commits
24e04f58
提交
24e04f58
authored
10月 12, 2009
作者:
Thomas Mueller
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电子邮件补丁
差异文件
Documentation improvements
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15 个修改的文件
包含
30 行增加
和
147 行删除
+30
-147
advanced.html
h2/src/docsrc/html/advanced.html
+0
-26
build.html
h2/src/docsrc/html/build.html
+0
-8
changelog.html
h2/src/docsrc/html/changelog.html
+2
-1
datatypes.html
h2/src/docsrc/html/datatypes.html
+0
-1
faq.html
h2/src/docsrc/html/faq.html
+1
-11
features.html
h2/src/docsrc/html/features.html
+9
-43
fragments.html
h2/src/docsrc/html/fragments.html
+9
-14
functions.html
h2/src/docsrc/html/functions.html
+0
-1
grammar.html
h2/src/docsrc/html/grammar.html
+0
-4
history.html
h2/src/docsrc/html/history.html
+0
-5
installation.html
h2/src/docsrc/html/installation.html
+0
-4
performance.html
h2/src/docsrc/html/performance.html
+0
-6
quickstart.html
h2/src/docsrc/html/quickstart.html
+0
-2
roadmap.html
h2/src/docsrc/html/roadmap.html
+5
-3
tutorial.html
h2/src/docsrc/html/tutorial.html
+4
-18
没有找到文件。
h2/src/docsrc/html/advanced.html
浏览文件 @
24e04f58
...
...
@@ -94,7 +94,6 @@ In this case, each block of rows is sorted using quick sort, then written to dis
when reading the data, the blocks are merged together.
</p>
<br
/>
<h2
id=
"large_objects"
>
Large Objects
</h2>
<h3>
Storing and Reading Large Objects
</h3>
...
...
@@ -130,7 +129,6 @@ operations. If you store many large compressible values such as XML, HTML, text,
then compressing can save a lot of disk space (sometimes more than 50%), and read operations may even be faster.
</p>
<br
/>
<h2
id=
"linked_tables"
>
Linked Tables
</h2>
<p>
This database supports linked tables, which means tables that don't exist in the current database but
...
...
@@ -160,7 +158,6 @@ The statement <a href="grammar.html#create_linked_table" class="notranslate" >CR
supports an optional schema name parameter.
</p>
<br
/>
<h2
id=
"transaction_isolation"
>
Transaction Isolation
</h2>
<p>
Transaction isolation is provided for all data manipulation language (DML) statements.
...
...
@@ -232,7 +229,6 @@ connection will get a lock timeout exception. The lock timeout can be set indivi
for each connection.
</p>
<br
/>
<h2
id=
"mvcc"
>
Multi-Version Concurrency Control (MVCC)
</h2>
<p>
The MVCC feature allows higher concurrency than using (table level or row level) locks.
...
...
@@ -259,7 +255,6 @@ the complete undo log must fit in memory when using multi-version concurrency
(the setting
<code>
MAX_MEMORY_UNDO
</code>
has no effect).
</p>
<br
/>
<h2
id=
"clustering"
>
Clustering / High Availability
</h2>
<p>
This database supports a simple clustering / high availability mechanism. The architecture is:
...
...
@@ -342,7 +337,6 @@ Those functions should not be used directly in modifying statements
in read-only statements and the result can then be used for modifying statements.
</p>
<br
/>
<h2
id=
"two_phase_commit"
>
Two Phase Commit
</h2>
<p>
The two phase commit protocol is supported. 2-phase-commit works as follows:
...
...
@@ -363,7 +357,6 @@ The two phase commit protocol is supported. 2-phase-commit works as follows:
</li><li>
The database needs to be closed and re-opened to apply the changes
</li></ul>
<br
/>
<h2
id=
"compatibility"
>
Compatibility
</h2>
<p>
This database is (up to a certain point) compatible to other databases such as HSQLDB, MySQL and PostgreSQL.
...
...
@@ -392,7 +385,6 @@ Certain words of this list are keywords because they are functions that can be u
for example
<code>
CURRENT_TIMESTAMP
</code>
.
</p>
<br
/>
<h2
id=
"standards_compliance"
>
Standards Compliance
</h2>
<p>
This database tries to be as much standard compliant as possible. For the SQL language, ANSI/ISO is the main
...
...
@@ -401,7 +393,6 @@ Unfortunately, the standard documentation is not freely available. Another probl
are not standardized. Whenever this is the case, this database tries to be compatible to other databases.
</p>
<br
/>
<h2
id=
"windows_service"
>
Run as Windows Service
</h2>
<p>
Using a native wrapper / adapter, Java applications can be run as a Windows Service.
...
...
@@ -445,7 +436,6 @@ To uninstall the service, double click on <code>5_uninstall_service.bat</code>.
If successful, a command prompt window will pop up and disappear immediately. If not, a message will appear.
</p>
<br
/>
<h2
id=
"odbc_driver"
>
ODBC Driver
</h2>
<p>
This database does not come with its own ODBC driver at this time,
...
...
@@ -552,7 +542,6 @@ Also, it is currently not possible to use encrypted SSL connections.
Therefore the ODBC driver should not be used where security is important.
</p>
<br
/>
<h2
id=
"microsoft_dot_net"
>
Using H2 in Microsoft .NET
</h2>
<p>
The database can be used from Microsoft .NET even without using Java, by using IKVM.NET.
...
...
@@ -602,7 +591,6 @@ class Test
}
</pre>
<br
/>
<h2
id=
"acid"
>
ACID
</h2>
<p>
In the database world, ACID stands for:
...
...
@@ -642,7 +630,6 @@ If durability is required for all possible cases of hardware failure, clustering
such as the H2 clustering mode.
</p>
<br
/>
<h2
id=
"durability_problems"
>
Durability Problems
</h2>
<p>
Complete durability means all committed transaction survive a power failure.
...
...
@@ -728,7 +715,6 @@ none of the databases contains all the records that the listener computer knows
consult the source code of the listener and test application.
</p>
<br
/>
<h2
id=
"using_recover_tool"
>
Using the Recover Tool
</h2>
<p>
The
<code>
Recover
</code>
tool can be used to extract the contents of a data file, even if the database is corrupted.
...
...
@@ -753,7 +739,6 @@ however it does not automatically apply those changes. Usually, many of those ch
applied in the database.
</p>
<br
/>
<h2
id=
"file_locking_protocols"
>
File Locking Protocols
</h2>
<p>
Whenever a database is opened, a lock file is created to signal other processes
...
...
@@ -836,7 +821,6 @@ share, two processes (running on different computers) could still open the same
database files, if they do not have a direct TCP/IP connection.
</p>
<br
/>
<h2
id=
"sql_injection"
>
Protection against SQL Injection
</h2>
<h3>
What is SQL Injection
</h3>
<p>
...
...
@@ -922,7 +906,6 @@ It is not required to create a constant for the number 0 as there is already a b
SELECT * FROM USERS WHERE LENGTH(PASSWORD)=ZERO();
</pre>
<br
/>
<h2
id=
"remote_access"
>
Protection against Remote Access
</h2>
<p>
By default this database does not allow others to connect when starting the H2 Console,
...
...
@@ -934,7 +917,6 @@ users can not create new databases or access existing databases with weak passwo
ensure the existing accessible databases are protected using a strong password.
</p>
<br
/>
<h2
id=
"restricting_classes"
>
Restricting Class Loading and Usage
</h2>
<p>
By default there is no restriction on loading classes and executing Java code for admins.
...
...
@@ -963,7 +945,6 @@ trigger classes, user-defined functions, user-defined aggregate functions, and J
driver classes (with the exception of the H2 driver) when using the H2 Console.
</p>
<br
/>
<h2
id=
"security_protocols"
>
Security Protocols
</h2>
<p>
The following paragraphs document the security protocols used in this database.
...
...
@@ -1074,7 +1055,6 @@ There is a default self-certified certificate to support an easy starting point,
custom certificates are supported as well.
</p>
<br
/>
<h2
id=
"ssl_tls_connections"
>
SSL/TLS Connections
</h2>
<p>
Remote SSL/TLS connections are supported using the Java Secure Socket Extension
...
...
@@ -1092,7 +1072,6 @@ for more information.
To disable anonymous SSL, set the system property
<code>
h2.enableAnonymousSSL
</code>
to false.
</p>
<br
/>
<h2
id=
"uuid"
>
Universally Unique Identifiers (UUID)
</h2>
<p>
This database supports UUIDs. Also supported is a function to create new UUIDs using
...
...
@@ -1135,7 +1114,6 @@ one's annual risk of being hit by a meteorite is estimated to be one chance in 1
that means the probability is about 0.000'000'000'06.
</p>
<br
/>
<h2
id=
"system_properties"
>
Settings Read from System Properties
</h2>
<p>
Some settings of the database can be set on the command line using
...
...
@@ -1155,7 +1133,6 @@ For a complete list of settings, see
<a
href=
"../javadoc/org/h2/constant/SysProperties.html"
>
SysProperties
</a>
.
</p>
<br
/>
<h2
id=
"server_bind_address"
>
Setting the Server Bind Address
</h2>
<p>
Usually server sockets accept connections on any/all local addresses.
...
...
@@ -1165,7 +1142,6 @@ This setting is used for both regular server sockets and for SSL server sockets.
IPv4 and IPv6 address formats are supported.
</p>
<br
/>
<h2
id=
"file_system"
>
Pluggable File System
</h2>
<p>
This database supports a pluggable file system API. The file system implementation
...
...
@@ -1187,7 +1163,6 @@ To register a new file system, extend the classes <code>org.h2.store.fs.FileSyst
and call the method
<code>
FileSystem.register
</code>
before using it.
</p>
<br
/>
<h2
id=
"limits_limitations"
>
Limits and Limitations
</h2>
<p>
This database has the following known limitations:
...
...
@@ -1226,7 +1201,6 @@ OR X = 2 OR X = 2 OR X = 2 OR X = 2 OR X = 2
or the data type documentation of this database.
</li></ul>
<br
/>
<h2
id=
"glossary_links"
>
Glossary and Links
</h2>
<table>
<tr>
...
...
h2/src/docsrc/html/build.html
浏览文件 @
24e04f58
...
...
@@ -33,14 +33,12 @@ Build
<a
href=
"#automated"
>
Automated Build
</a><br
/>
<br
/>
<h2
id=
"portability"
>
Portability
</h2>
<p>
This database is written in Java and therefore works on many platforms.
It can also be compiled to a native executable using GCJ.
</p>
<br
/>
<h2
id=
"environment"
>
Environment
</h2>
<p>
A Java Runtime Environment (JRE) version 1.5 or higher is required to run this database.
...
...
@@ -63,7 +61,6 @@ Newer version or compatible software works too.
</li><li><a
href=
"http://maven.apache.org"
>
Maven 2.0.9
</a>
</li></ul>
<br
/>
<h2
id=
"building"
>
Building the Software
</h2>
<p>
You need to install a JDK, for example the Sun JDK version 1.5 or 1.6.
...
...
@@ -93,7 +90,6 @@ To switch the source code to the installed version of Java, run:
build switchSource
</pre>
<br
/>
<h2
id=
"build_targets"
>
Build Targets
</h2>
<p>
The build system can generate smaller jar files as well. The following targets are currently supported:
...
...
@@ -115,7 +111,6 @@ To create the file <code>h2client.jar</code>, go to the directory <code>h2</code
build jarClient
</pre>
<br
/>
<h2
id=
"maven2"
>
Using Maven 2
</h2>
<h3>
Using a Central Repository
</h3>
<p>
...
...
@@ -153,7 +148,6 @@ Afterwards, you can include the database in your Maven 2 project as a dependency
<
/dependency
>
</pre>
<br
/>
<h2
id=
"translating"
>
Translating
</h2>
<p>
The translation of this software is split into the following parts:
...
...
@@ -172,7 +166,6 @@ The web site translation is automated as well,
using
<code>
build docs
</code>
.
</p>
<br
/>
<h2
id=
"providing_patches"
>
Providing Patches
</h2>
<p>
If you like to provide patches, please consider the following guidelines to simplify merging them:
...
...
@@ -213,7 +206,6 @@ multiple-licensed under the H2 License, version 1.0, and under the
Eclipse Public License, version 1.0 (http://h2database.com/html/license.html)."
</p>
<br
/>
<h2
id=
"automated"
>
Automated Build
</h2>
<p>
This build process is automated and runs regularly.
...
...
h2/src/docsrc/html/changelog.html
浏览文件 @
24e04f58
...
...
@@ -18,7 +18,8 @@ Change Log
<h1>
Change Log
</h1>
<h2>
Next Version (unreleased)
</h2>
<ul><li>
-
<ul><li>
The documentation is no longer available in Japanese because the
translation was too much out of sync. Please use the Google translation instead.
</li></ul>
<h2>
Version 1.2.121 (2009-10-11)
</h2>
...
...
h2/src/docsrc/html/datatypes.html
浏览文件 @
24e04f58
...
...
@@ -23,7 +23,6 @@ Data Types
</p>
<c:forEach
var=
"item"
items=
"dataTypes"
>
<br
/>
<h3
id=
"${item.link}"
class=
"notranslate"
>
${item.topic}
</h3>
<pre>
${item.syntax}
...
...
h2/src/docsrc/html/faq.html
浏览文件 @
24e04f58
...
...
@@ -40,7 +40,6 @@ Frequently Asked Questions
<a
href=
"#translate"
>
How to Translate this Project?
</a><br
/>
<br
/>
<h3
id=
"known_bugs"
>
Are there Known Bugs? When is the Next Release?
</h3>
<p>
Usually, bugs get fixes as they are found. There is a release every few weeks.
...
...
@@ -64,14 +63,12 @@ Here is the list of known and confirmed issues:
This problem is solved in Install4j 4.1.4.
</li></ul>
<br
/>
<h3
id=
"open_source"
>
Is this Database Engine Open Source?
</h3>
<p>
Yes. It is free to use and distribute, and the source code is included.
See also under license.
</p>
<br
/>
<h3
id=
"query_slow"
>
My Query is Slow
</h3>
<p>
Slow
<code>
SELECT
</code>
(or
<code>
DELETE, UPDATE, MERGE
</code>
)
...
...
@@ -87,13 +84,12 @@ statement can have multiple reasons. Follow this checklist:
</li>
</ul>
<br
/>
<h3
id=
"create_database"
>
How to Create a New Database?
</h3>
<p>
By default, a new database is automatically created if it does not yet exist.
See
<a
href=
"tutorial.html#creating_new_databases"
>
Creating New Databases
</a>
.
</p>
<br
/>
<h3
id=
"connect"
>
How to Connect to a Database?
</h3>
<p>
The database driver is
<code>
org.h2.Driver
</code>
,
...
...
@@ -105,7 +101,6 @@ Class.forName("org.h2.Driver");
Connection conn = DriverManager.getConnection("jdbc:h2:~/test", "sa", "");
</pre>
<br
/>
<h3
id=
"database_files"
>
Where are the Database Files Stored?
</h3>
<p>
When using database URLs like
<code>
jdbc:h2:~/test
</code>
,
...
...
@@ -123,13 +118,11 @@ fully qualified directory name (and for Windows, drive name).
Example:
<code>
jdbc:h2:file:C:/data/test
</code>
</p>
<br
/>
<h3
id=
"size_limit"
>
What is the Size Limit (Maximum Size) of a Database?
</h3>
<p>
See
<a
href=
"advanced.html#limits_limitations"
>
Limits and Limitations
</a>
.
</p>
<br
/>
<h3
id=
"reliable"
>
Is it Reliable?
</h3>
<p>
That is not easy to say. It is still a quite new product. A lot of tests have been written,
...
...
@@ -184,7 +177,6 @@ See also: <a href="grammar.html#set_log" class="notranslate">SET LOG</a>. This p
using the new 'page store' mechanism (currently beta).
</p>
<br
/>
<h3
id=
"slow_open"
>
Why is Opening my Database Slow?
</h3>
<p>
If it takes a long time to open a database, in most cases it was not closed the last time.
...
...
@@ -207,7 +199,6 @@ Other possible reasons are: the database is very big (many GB), or contains link
that are slow to open.
</p>
<br
/>
<h3
id=
"gcj"
>
Is the GCJ Version Stable? Faster?
</h3>
<p>
The GCJ version is not as stable as the Java version.
...
...
@@ -217,7 +208,6 @@ Currently, the GCJ version is also slower than when using the Sun VM.
However, the startup of the GCJ version is faster than when using a VM.
</p>
<br
/>
<h3
id=
"translate"
>
How to Translate this Project?
</h3>
<p>
For more information, see
...
...
h2/src/docsrc/html/features.html
浏览文件 @
24e04f58
差异被折叠。
点击展开。
h2/src/docsrc/html/fragments.html
浏览文件 @
24e04f58
...
...
@@ -17,12 +17,16 @@ Initial Developer: H2 Group
<div
class=
"menu"
>
<img
src=
"images/h2-logo.png"
alt=
"H2 Logo"
onclick=
"document.location='main.html'"
width=
"136"
height=
"74"
/>
</div>
<form
action=
"submit"
onsubmit=
"return goFirst();"
>
<table
width=
"100%"
class=
"search"
>
<tr
class=
"search"
>
<td
class=
"search"
colspan=
"2"
>
<a
href=
"frame.html"
><img
src=
"images/language_en.gif"
alt=
"English"
width=
"23"
height=
"15"
/></a>
<a
href=
"frame_ja.html"
><img
src=
"images/language_ja.gif"
alt=
"Japanese"
width=
"23"
height=
"15"
/></a>
<!-- translate
<a href="http://translate.google.com/translate?u=http%3A%2F%2Fh2database.com"
onclick="javascript:document.getElementById('translate').style.display='';return false;">Translate</a>
<div id = "translate" style="display:none"><div id = "google_translate_element"></div></div>
translate -->
</td>
</tr>
<tr
class=
"search"
>
...
...
@@ -52,6 +56,7 @@ Initial Developer: H2 Group
<div
class=
"menu"
>
<b><a
href=
"main.html"
>
Home
</a></b><br
/>
<a
href=
"quickstart.html"
>
Quickstart
</a><br
/>
<a
href=
"cheatSheet.html"
>
Cheat Sheet
</a><br
/>
<a
href=
"installation.html"
>
Installation
</a><br
/>
<a
href=
"tutorial.html"
>
Tutorial
</a><br
/>
<a
href=
"features.html"
>
Features
</a><br
/>
...
...
@@ -76,18 +81,6 @@ Initial Developer: H2 Group
<a
href=
"license.html"
>
License
</a><br
/>
<br
/>
<!-- translate
<a href="http://translate.google.com/translate?u=http%3A%2F%2Fh2database.com"
onclick="javascript:document.getElementById('translate').style.display='';return false;">Translate</a>
<div id = "translate" style="display:none"><div id = "google_translate_element"></div></div>
<script type="text/javascript">
function googleTranslateElementInit() {
new google.translate.TranslateElement({pageLanguage: 'en'}, 'google_translate_element');
}
</script>
<script type="text/javascript" src="http://translate.google.com/translate_a/element.js?cb=googleTranslateElementInit"></script>
translate -->
</div>
</div>
</td>
...
...
@@ -101,6 +94,8 @@ translate -->
</div></td></tr></table>
<script
type=
"text/javascript"
src=
"index.js"
></script>
<script
type=
"text/javascript"
src=
"search.js"
></script>
<script
type=
"text/javascript"
>
function
googleTranslateElementInit
()
{
new
google
.
translate
.
TranslateElement
({
pageLanguage
:
'en'
},
'google_translate_element'
);
}
</script>
<!-- } -->
</body></html>
\ No newline at end of file
h2/src/docsrc/html/functions.html
浏览文件 @
24e04f58
...
...
@@ -53,7 +53,6 @@ Functions
</p>
<c:forEach
var=
"item"
items=
"functionsAll"
>
<br
/>
<h3
id=
"${item.link}"
class=
"notranslate"
>
${item.topic}
</h3>
<pre>
${item.syntax}
...
...
h2/src/docsrc/html/grammar.html
浏览文件 @
24e04f58
...
...
@@ -51,7 +51,6 @@ SQL Grammar
</p>
<c:forEach
var=
"item"
items=
"commands"
>
<br
/>
<h3
id=
"${item.link}"
class=
"notranslate"
>
${item.topic}
</h3>
<pre>
${item.syntax}
...
...
@@ -62,7 +61,6 @@ ${item.syntax}
</c:forEach>
<c:forEach
var=
"item"
items=
"otherGrammar"
>
<br
/>
<h3
id=
"${item.link}"
class=
"notranslate"
>
${item.topic}
</h3>
<pre>
${item.syntax}
...
...
@@ -72,7 +70,6 @@ ${item.syntax}
<p
class=
"notranslate"
>
${item.example}
</p>
</c:forEach>
<br
/>
<h3
id=
"information_schema"
class=
"notranslate"
>
Information Schema
</h3>
<p>
The system tables in the schema
<code>
INFORMATION_SCHEMA
</code>
contain the meta data
...
...
@@ -87,7 +84,6 @@ of all tables in the database as well as the current settings.
</c:forEach>
</table>
<br
/>
<h3
id=
"range_table"
class=
"notranslate"
>
Range Table
</h3>
<p>
The range table is a dynamic system table that contains all values from a start to an end value.
...
...
h2/src/docsrc/html/history.html
浏览文件 @
24e04f58
...
...
@@ -27,7 +27,6 @@ History
<a
href=
"#supporters"
>
Supporters
</a><br
/>
<br
/>
<h2
id=
"changelog"
>
Change Log
</h2>
<p>
The up-to-date change log is available at
...
...
@@ -36,7 +35,6 @@ http://www.h2database.com/html/changelog.html
</a>
</p>
<br
/>
<h2
id=
"roadmap"
>
Roadmap
</h2>
<p>
The current roadmap is available at
...
...
@@ -45,7 +43,6 @@ http://www.h2database.com/html/roadmap.html
</a>
</p>
<br
/>
<h2
id=
"history"
>
History of this Database Engine
</h2>
<p>
The development of H2 was started in May 2004,
...
...
@@ -58,7 +55,6 @@ The name H2 stands for Hypersonic 2; however H2 does not share any code with
Hypersonic SQL or HSQLDB. H2 is built from scratch.
</p>
<br
/>
<h2
id=
"why_java"
>
Why Java
</h2>
<p>
A few reasons using a Java database are:
...
...
@@ -92,7 +88,6 @@ instead of using the existing libraries. Libraries that are not available in ope
Java implementations (such as Swing) are not used or only used for specific features.
</p>
<br
/>
<h2
id=
"supporters"
>
Supporters
</h2>
<p>
Many thanks for those who helped by finding and reporting bugs, gave valuable feedback,
...
...
h2/src/docsrc/html/installation.html
浏览文件 @
24e04f58
...
...
@@ -26,7 +26,6 @@ Installation
<a
href=
"#directory_structure"
>
Directory Structure
</a><br
/>
<br
/>
<h2
id=
"requirements"
>
Requirements
</h2>
<p>
To run the database, the following minimum software stack is known to work:
...
...
@@ -38,7 +37,6 @@ To run the database, the following minimum software stack is known to work:
</li><li>
Mozilla Firefox 1.5 or newer
</li></ul>
<br
/>
<h2
id=
"supported_platforms"
>
Supported Platforms
</h2>
<p>
As this database is written in Java, it can run on many different platforms.
...
...
@@ -48,13 +46,11 @@ developed and tested on Windows XP and Mac OS X using the Sun JDK 1.5, but it al
works in many other operating systems and using other Java runtime environments.
</p>
<br
/>
<h2
id=
"installing"
>
Installing the Software
</h2>
<p>
To install the software, run the installer or unzip it to a directory of your choice.
</p>
<br
/>
<h2
id=
"directory_structure"
>
Directory Structure
</h2>
<p>
After installing, you should get the following directory structure:
...
...
h2/src/docsrc/html/performance.html
浏览文件 @
24e04f58
...
...
@@ -29,7 +29,6 @@ Performance
<a
href=
"#fast_import"
>
Fast Database Import
</a><br
/>
<br
/>
<h2
id=
"performance_comparison"
>
Performance Comparison
</h2>
<p>
In many cases H2 is faster than other
...
...
@@ -272,7 +271,6 @@ Here, one (wrapper) connection is opened at the start,
and for each step a new connection is opened and then closed.
</p>
<br
/>
<h2
id=
"poleposition_benchmark"
>
PolePosition Benchmark
</h2>
<p>
The PolePosition is an open source benchmark. The algorithms are all quite simple.
...
...
@@ -318,7 +316,6 @@ To change that, use the database URL <code>jdbc:h2:file:data/h2/dbbench;DB_CLOSE
Unfortunately, the PolePosition test does not take this into account.
</li></ul>
<br
/>
<h2
id=
"application_profiling"
>
Application Profiling
</h2>
<h3>
Analyze First
</h3>
...
...
@@ -345,7 +342,6 @@ run <code>jstack <pid></code> or <code>kill -QUIT <pid></code> (Linu
Ctrl+C (Windows).
</p>
<br
/>
<h2
id=
"database_profiling"
>
Database Profiling
</h2>
<p>
The
<code>
ConvertTraceFile
</code>
tool generates SQL statement statistics at the end of the SQL script file.
...
...
@@ -384,7 +380,6 @@ following profiling data (results vary):
-- 0% 100% 0 1 0 SET TRACE_LEVEL_FILE 3;
</pre>
<br
/>
<h2
id=
"database_performance_tuning"
>
Database Performance Tuning
</h2>
<h3>
Use a Modern JVM
</h3>
...
...
@@ -521,7 +516,6 @@ Each data type has different storage and performance characteristics:
to work with than
<code>
INTEGER
</code>
in most modes.
</li></ul>
<br
/>
<h2
id=
"fast_import"
>
Fast Database Import
</h2>
<p>
To speed up large imports, consider using the following options temporarily:
...
...
h2/src/docsrc/html/quickstart.html
浏览文件 @
24e04f58
...
...
@@ -21,7 +21,6 @@ Quickstart
<a
href=
"#h2_console"
>
The H2 Console Application
</a><br
/>
<br
/>
<h2
id=
"embedding"
>
Embedding H2 in an Application
</h2>
<p>
This database can be used in embedded mode, or in server mode. To use it in embedded mode, you need to:
...
...
@@ -33,7 +32,6 @@ This database can be used in embedded mode, or in server mode. To use it in embe
</li><li>
A new database is automatically created
</li></ul>
<br
/>
<h2
id=
"h2_console"
>
The H2 Console Application
</h2>
<p>
The Console lets you access a SQL database using a browser interface.
...
...
h2/src/docsrc/html/roadmap.html
浏览文件 @
24e04f58
...
...
@@ -32,7 +32,8 @@ See also <a href="build.html#providing_patches">Providing Patches</a>.
<ul>
<li>
Bugfixes
</li><li>
Page store: new storage mechanism
</li><li>
[Requires page store] Support large updates (use the transaction log for rollback).
</li><li>
[Requires page store] Support large updates (use the transaction log
for rollback instead of persistent UndoLog.file).
</li><li>
[Requires page store] Shutdown compact
</li><li>
More tests with MULTI_THREADED=1
</li><li>
RECOVER=1 should automatically recover, =2 should run the recovery tool if required
...
...
@@ -94,6 +95,7 @@ See also <a href="build.html#providing_patches">Providing Patches</a>.
</li><li>
Comparison: pluggable sort order: natural sort
</li><li>
Count index range query (count(*) where id between 10 and 20)
</li><li>
Support alter table add column if table has views defined
</li><li>
Recursive Queries (see details)
</li><li>
Eclipse plugin
</li><li>
Asynchronous queries to support publish/subscribe: SELECT ... FOR READ WAIT [maxMillisToWait]
</li><li>
Fulltext search Lucene: analyzer configuration.
...
...
@@ -186,7 +188,6 @@ See also <a href="build.html#providing_patches">Providing Patches</a>.
</li><li>
Read InputStream when executing, as late as possible (maybe only embedded mode). Problem with re-execute.
</li><li>
Native fulltext search: min word length; store word positions
</li><li>
[Requires page store] Store dates in local time zone (portability of database files)
</li><li>
Recursive Queries (see details)
</li><li>
Add an option to the SCRIPT command to generate only portable / standard SQL
</li><li>
Test Dezign for Databases (http://www.datanamic.com)
</li><li>
Fast library for parsing / formatting: http://javolution.org/
...
...
@@ -394,6 +395,8 @@ See also <a href="build.html#providing_patches">Providing Patches</a>.
</li><li>
Natural join: support select x from dual natural join dual.
</li><li>
Natural join: somehow support this: select a.x, b.x, x from dual a natural join dual b
</li><li>
MySQL compatibility: for auto_increment columns, convert 0 to next value (as when inserting NULL).
</li><li>
Optimization for multi-column IN: use an index if possible. Example: (A, B) IN((1, 2), (2, 3)).
</li><li>
Optimization for EXISTS: convert to inner join or IN(..) if possible.
</li><li>
Functions: support hashcode(value); cryptographic and fast
</li><li>
Serialized file lock: support long running queries.
</li><li>
Network: use 127.0.0.1 if other addresses don't work.
...
...
@@ -446,7 +449,6 @@ See also <a href="build.html#providing_patches">Providing Patches</a>.
</li><li>
Oracle compatibility: support CREATE SYNONYM table FOR schema.table.
</li><li>
Optimize A=? OR B=? to UNION if the cost is lower.
</li><li>
More secure default configuration if remote access is enabled.
</li><li>
Optimization for EXISTS: convert to inner join if possible.
</li><li>
Improve database file locking (maybe use native file locking). The current approach seems to be problematic
if the file system is on a remote share (see Google Group 'Lock file modification time is in the future').
</li><li>
Document internal features such as BELONGS_TO_TABLE, NULL_TO_DEFAULT, SEQUENCE.
...
...
h2/src/docsrc/html/tutorial.html
浏览文件 @
24e04f58
...
...
@@ -53,7 +53,6 @@ Tutorial
<a
href=
"#spring"
>
Using Spring
</a><br
/>
<br
/>
<h2
id=
"tutorial_starting_h2_console"
>
Starting and Using the H2 Console
</h2>
<p>
The H2 Console application lets you access a SQL database using a browser interface.
...
...
@@ -224,7 +223,6 @@ press [Ctrl]+[C] in the console where the server was started (Windows),
or close the console window.
</p>
<br
/>
<h2
id=
"console_settings"
>
Settings of the H2 Console
</h2>
<p>
The settings of the H2 Console are stored in a configuration file
...
...
@@ -233,7 +231,6 @@ For Windows installations, the user home directory is usually <code>C:\Documents
The configuration file contains the settings of the application and is automatically created when the H2 Console is first started.
</p>
<br
/>
<h2
id=
"connecting_using_jdbc"
>
Connecting to a Database using JDBC
</h2>
<p>
To connect to a database, a Java application first needs to load the database driver,
...
...
@@ -262,15 +259,17 @@ is the user name (<code>sa</code> for System Administrator in this example). The
In this database, user names are not case sensitive, but passwords are.
</p>
<br
/>
<h2
id=
"creating_new_databases"
>
Creating New Databases
</h2>
<p>
By default, if the database specified in the URL does not yet exist, a new (empty)
database is created automatically. The user that created the database automatically becomes
the administrator of this database.
</p>
<p>
Auto-creating new database can be disabled, see
<a
href=
"features.html#database_only_if_exists"
>
Opening a Database Only if it Already Exists
</a>
.
</p>
<br
/>
<h2
id=
"using_server"
>
Using the Server
</h2>
<p>
H2 currently supports three server: a web server (for the H2 Console),
...
...
@@ -345,7 +344,6 @@ Shutting down a TCP server can be protected using the option <code>-tcpPassword<
(the same password must be used to start and stop the TCP server).
</p>
<br
/>
<h2
id=
"using_hibernate"
>
Using Hibernate
</h2>
<p>
This database supports Hibernate version 3.1 and newer. You can use the HSQLDB Dialect,
...
...
@@ -356,7 +354,6 @@ is also available at <code>src/tools/org/hibernate/dialect/H2Dialect.java.txt</c
You can rename it to
<code>
H2Dialect.java
</code>
and include this as a patch in your application.
</p>
<br
/>
<h2
id=
"using_toplink"
>
Using TopLink and Glassfish
</h2>
<p>
To use H2 with Glassfish (or Sun AS), set the Datasource Classname to
...
...
@@ -383,7 +380,6 @@ To enable it, change the following setting in persistence.xml:
In old versions of Glassfish, the property name is
<code>
toplink.platform.class.name
</code>
.
</p>
<br
/>
<h2
id=
"web_applications"
>
Using Databases in Web Applications
</h2>
<p>
There are multiple ways to access a database from within web
...
...
@@ -494,7 +490,6 @@ To create a web application with just the H2 Console, run the following command:
build warConsole
</pre>
<br
/>
<h2
id=
"csv"
>
CSV (Comma Separated Values) Support
</h2>
<p>
The CSV file support can be used inside the database using the functions
...
...
@@ -568,7 +563,6 @@ public class TestCsv {
}
</pre>
<br
/>
<h2
id=
"upgrade_backup_restore"
>
Upgrade, Backup, and Restore
</h2>
<h3>
Database Upgrade
</h3>
...
...
@@ -633,7 +627,6 @@ if the file systems support creating snapshots. The problem is that it can't
be guaranteed that the data is copied in the right order.
</p>
<br
/>
<h2
id=
"command_line_tools"
>
Command Line Tools
</h2>
<p>
This database comes with a number of command line tools. To get more information about a tool,
...
...
@@ -663,7 +656,6 @@ The tools can also be called from an application by calling the main or another
For details, see the Javadoc documentation.
</p>
<br
/>
<h2
id=
"open_office"
>
Using OpenOffice Base
</h2>
<p>
OpenOffice.org Base supports database access over the JDBC API. To connect to a H2 database
...
...
@@ -711,7 +703,6 @@ This can be done by create it using the NetBeans OpenOffice plugin.
See also
<a
href=
"http://wiki.services.openoffice.org/wiki/Extensions_development_java"
>
Extensions Development
</a>
.
</p>
<br
/>
<h2
id=
"web_start"
>
Java Web Start / JNLP
</h2>
<p>
When using Java Web Start / JNLP (Java Network Launch Protocol), permissions tags must be set in the .jnlp file,
...
...
@@ -726,7 +717,6 @@ Example permission tags:
<
/security>
</pre>
<br
/>
<h2
id=
"connection_pool"
>
Using a Connection Pool
</h2>
<p>
For H2, opening a connection is fast if the database is already open.
...
...
@@ -755,7 +745,6 @@ public class Test {
}
</pre>
<br
/>
<h2
id=
"fulltext"
>
Fulltext Search
</h2>
<p>
H2 includes two fulltext search implementations. One is using Apache Lucene,
...
...
@@ -864,7 +853,6 @@ org.h2.fulltext.FullTextLucene.search(conn, text, limit, offset);
org.h2.fulltext.FullTextLucene.searchData(conn, text, limit, offset);
</pre>
<br
/>
<h2
id=
"user_defined_variables"
>
User-Defined Variables
</h2>
<p>
This database supports user-defined variables. Variables start with
<code>
@
</code>
and can be used wherever
...
...
@@ -888,7 +876,6 @@ of the value assigned to it, that means it is not necessary (or possible) to dec
There are no restrictions on the assigned values; large objects (LOBs) are supported as well.
</p>
<br
/>
<h2
id=
"date_time"
>
Date and Time
</h2>
<p>
Date, time and timestamp values support ISO 8601 formatting, including time zone:
...
...
@@ -907,7 +894,6 @@ the database using the <code>RUNSCRIPT</code> command
or the
<code>
RunScript
</code>
tool in the new time zone.
</p>
<br
/>
<h2
id=
"spring"
>
Using Spring
</h2>
<p>
Use the following configuration to start and stop the H2 TCP server using the Spring Framework:
...
...
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