Skip to content

H
h2database
提交 eb73ac3e authored 作者: Thomas Mueller's avatar Thomas Mueller
浏览文件
操作

Documentation.

上级 961b5963
全部展开 隐藏空白字符变更
内嵌 并排
正在显示 包含 5111 行增加 和 4864 行删除
h2/src/docsrc/help/help.csv
浏览文件 @ eb73ac3e
......@@ -3511,7 +3511,7 @@ CALL DATABASE_PATH();
"
"Functions (System)","DECODE","
DECODE(value, whenValue, thenValue,...)
DECODE(value, whenValue, thenValue [,...])
","
Returns the first matching value. NULL is considered to match NULL.
If no match was found, then NULL or the last parameter (if the parameter count is even) is returned.
......
h2/src/docsrc/html/advanced.html
浏览文件 @ eb73ac3e
......@@ -848,7 +848,7 @@ against a database that was created with a user name that is not in the script.
The <code>Recover</code> tool creates a SQL script from database file. It also processes the transaction log.
</p>
<p>
To verify the database is always recoverable, append <code>;RECOVER_TEST=64</code>
To verify the database can recover at any time, append <code>;RECOVER_TEST=64</code>
to the database URL in your test environment. This will simulate an application crash after each 64 writes to the database file.
A log file named <code>databaseName.h2.db.log</code> is created that lists the operations.
The recovery is tested using an in-memory file system, that means it may require a larger heap setting.
......
h2/src/docsrc/html/changelog.html
浏览文件 @ eb73ac3e
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<!--
Copyright 2004-2011 H2 Group. Multiple-Licensed under the H2 License, Version 1.0,
......@@ -23,14 +22,14 @@ Change Log
</li><li>Lucene fulltext search: creating an index is now faster if the table already contains data.
Thanks a lot to Angel Leon from the FrostWire Team for the patch!
</li><li>Update statements with a column list in brackets did not work if the list only contains one column.
Example: update test set (id)=(id).
Example: update test set (id)=(id).
</li><li>Read-only databases in a zip file did not work when using the -baseDir option.
</li><li>Issue 334: SimpleResultSet.getString now also works for Clob columns.
</li><li>Subqueries with an aggregate did not always work. Example:
select (select count(*) from test where a = t.a and b = 0) from test t group by a
</li><li>Server: in some (theoretical) cases, exceptions while closing the connection were swallowed.
</li><li>Server: in some (theoretical) cases, exceptions while closing the connection were ignored.
</li><li>Server.createTcpServer, createPgServer, createWebServer: invalid arguments are now detected.
</li><li>The selectivity of LOB columns is no longer calculated
</li><li>The selectivity of LOB columns is no longer calculated
because indexes on LOB columns are not supported
(however this should have little effect on performance, as the selectivity
is calculated from the hash code and not the data).
......@@ -38,14 +37,14 @@ Change Log
when enabled, the database file is only modified when writing to the database.
When enabled, the serialized file lock is much faster for read-only operations.
</li><li>A NullPointerException could occur in TableView.isDeterministic for invalid views.
</li><li>Issue 180: when deserializing objects, the context class loader is used
</li><li>Issue 180: when deserializing objects, the context class loader is used
instead of the default class loader if the system property "h2.useThreadContextClassLoader" is set.
Thanks a lot to Noah Fontes for the patch!
</li><li>When using the exclusive mode, LOB operations could cause the thread to freeze.
</li><li>When using the exclusive mode, LOB operations could cause the thread to block.
This also affected the CreateCluster tool (when using BLOB or CLOB data).
</li><li>The optimization for "group by" was not working correctly if the group by column
was aliased in the select list.
</li><li>Issue 326: improved support for case sensitive (mixed case) identifiers
</li><li>Issue 326: improved support for case sensitive (mixed case) identifiers
without quotes when using DATABASE_TO_UPPER=FALSE.
</li></ul>
......
h2/src/docsrc/html/features.html
浏览文件 @ eb73ac3e
......@@ -523,7 +523,7 @@ This is achieved using different database URLs. Settings in the URLs are not cas
<td><a href="#execute_sql_on_connection">Execute SQL on connection</a></td>
<td class="notranslate">
jdbc:h2:&lt;url&gt;;INIT=RUNSCRIPT FROM '~/create.sql'<br />
jdbc:h2:file:~/sample;INIT=RUNSCRIPT FROM '~/create.sql'\\;RUNSCRIPT FROM '~/populate.sql'<br />
jdbc:h2:file:~/sample;INIT=RUNSCRIPT FROM '~/create.sql'\;RUNSCRIPT FROM '~/populate.sql'<br />
</td>
</tr>
<tr>
......@@ -772,6 +772,13 @@ must be escaped, as in the example below.
<pre>
String url = "jdbc:h2:mem;INIT=RUNSCRIPT FROM '~/create.sql'\\;RUNSCRIPT FROM '~/populate.sql'";
</pre>
<p>
Please note the double backslash is only required in a Java or properties file.
In a GUI, or in an XML file, only one backslash is required:
</p>
<pre>
&lt;property name="url" value="jdbc:h2:mem:test;INIT=CREATE SCHEMA IF NOT EXISTS TEST\;RUNSCRIPT FROM '~/sql/populate.sql';DB_CLOSE_DELAY=-1" /&gt;
</pre>
<h2 id="ignore_unknown_settings">Ignore Unknown Settings</h2>
<p>
......@@ -1190,8 +1197,8 @@ DriverManager.getConnection("jdbc:h2:/data/test;AUTO_SERVER=TRUE");
DriverManager.getConnection("jdbc:h2:/data/test;AUTO_SERVER=TRUE");
</pre>
<p>
When using this feature, by default the server allocates a random TCP socket.
It is possible to control the port that the server uses by passing in an <code>AUTO_SERVER_PORT=9090</code> parameter.
When using this feature, by default the server uses any free TCP port.
The port can be set manually using <code>AUTO_SERVER_PORT=9090</code>.
</p>
<h2 id="page_size">Page Size</h2>
......
h2/src/docsrc/html/history.html
浏览文件 @ eb73ac3e
......@@ -97,7 +97,7 @@ spread the word, and translated this project. Also many thanks to the donors:
</li><li><a href="http://skycash.com">SkyCash, Poland</a>
</li><li><a href="http://lumber-mill.co.jp">Lumber-mill, Inc., Japan</a>
</li><li><a href="http://www.stockmarketeye.com">StockMarketEye, USA</a>
</li><li>Alessio Jacopo D'Adamo, Italy</a>
</li><li>Alessio Jacopo D'Adamo, Italy
</li><li>Martin Wildam, Austria
</li><li>Ashwin Jayaprakash, USA
</li><li>Donald Bleyl, USA
......
h2/src/docsrc/html/links.html
浏览文件 @ eb73ac3e
......@@ -51,11 +51,10 @@ Please note he is not one of the developers of H2. He describes himself as follo
<p>
<a href="http://groups.google.com/group/h2-database/browse_thread/thread/adee024b8af85931/1edbc4a601146ec6">
Quote</a>:
"This is by far the easiest and fastest database that I have ever used.
Originally the web application that I am working on is using SQL server.
But, in less than 15 minutes I had H2 up and working with little recoding of the SQL.
"This is by far the easiest and fastest database that I have ever used.
Originally the web application that I am working on is using SQL server.
But, in less than 15 minutes I had H2 up and working with little recoding of the SQL.
Thanks..... "
</a>
</p>
http://groups.google.com/group/h2-database/browse_thread/thread/f4b19dfe31efcbe7/32c07dce1bd5a7a5
......
h2/src/docsrc/html/roadmap.html
浏览文件 @ eb73ac3e
......@@ -562,8 +562,10 @@ See also <a href="build.html#providing_patches">Providing Patches</a>.
</li><li>MySQL compatibility: index names only need to be unique for the given table.
</li><li>Issue 352: constraints: distinguish between 'no action' and 'restrict'. Currently, only restrict is supported,
and 'no action' is internally mapped to 'restrict'. The database meta data returns 'restrict' in all cases.
</li><li>Oracle compatilibity: support MEDIAN aggregate function.
</li><li>Issue 348: Oracle compatilibity: division should return a decimal result.
</li><li>Oracle compatibility: support MEDIAN aggregate function.
</li><li>Issue 348: Oracle compatibility: division should return a decimal result.
</li><li>Read rows on demand: instead of reading the whole row, only read up to that column that is requested.
Keep an pointer to the data area and the column id that is already read.
</li></ul>
<h2>Not Planned</h2>
......
h2/src/docsrc/textbase/_docs_en.properties
浏览文件 @ eb73ac3e
This source diff could not be displayed because it is too large. You can view the blob instead.
h2/src/main/org/h2/constant/SysProperties.java
浏览文件 @ eb73ac3e
......@@ -234,10 +234,10 @@ public class SysProperties {
/**
* System property <code>h2.modifyOnWrite</code> (default: false).<br />
* Only modify the database file when writing to the database. If disabled,
* opening the database modifies the file (to prepare it for writing).
* This only occurs when no recovery is necessary.
* When enabled, the serialized file lock is faster.
* Only modify the database file when recovery is necessary, or when writing
* to the database. If disabled, opening the database always writes to the
* file (except if the database is read-only). When enabled, the serialized
* file lock is faster.
*/
public static final boolean MODIFY_ON_WRITE = Utils.getProperty("h2.modifyOnWrite", false);
......@@ -387,11 +387,13 @@ public class SysProperties {
public static final String URL_MAP = Utils.getProperty("h2.urlMap", null);
/**
* System property <code>h2.useThreadContextClassLoader</code> (default: false).<br />
* Instead of using the default class loader when deserializing objects,
* the current thread-context class loader will be used.
* System property <code>h2.useThreadContextClassLoader</code>
* (default: false).<br />
* Instead of using the default class loader when deserializing objects, the
* current thread-context class loader will be used.
*/
public static final boolean USE_THREAD_CONTEXT_CLASS_LOADER = Utils.getProperty("h2.useThreadContextClassLoader", false);
public static final boolean USE_THREAD_CONTEXT_CLASS_LOADER =
Utils.getProperty("h2.useThreadContextClassLoader", false);
/**
* System property <code>h2.webMaxValueLength</code> (default: 100000).<br />
......
h2/src/main/org/h2/engine/Database.java
浏览文件 @ eb73ac3e
......@@ -2374,12 +2374,27 @@ public class Database implements DataHandler {
return dbSettings;
}
/**
* Create a new hash map. Depending on the configuration, the key is case
* sensitive or case insensitive.
*
* @param <V> the value type
* @return the hash map
*/
public <V> HashMap<String, V> newStringMap() {
return dbSettings.databaseToUpper ?
new HashMap<String, V>() :
new CaseInsensitiveMap<V>();
}
/**
* Compare two identifiers (table names, column names,...) and verify they
* are equal. Case sensitivity depends on the configuration.
*
* @param a the first identifier
* @param b the second identifier
* @return true if they match
*/
public boolean equalsIdentifiers(String a, String b) {
if (a == b || a.equals(b)) {
return true;
......
h2/src/main/org/h2/fulltext/FullTextLucene.java
浏览文件 @ eb73ac3e
......@@ -577,7 +577,10 @@ public class FullTextLucene extends FullText {
// ignore
}
public void commitIndex() throws SQLException {
/**
* Commit all changes to the Lucene index.
*/
void commitIndex() throws SQLException {
try {
indexAccess.writer.commit();
// recreate Searcher with the IndexWriter's reader.
......@@ -595,6 +598,7 @@ public class FullTextLucene extends FullText {
* Add a row to the index.
*
* @param row the row
* @param commitIndex whether to commit the changes to the Lucene index
*/
protected void insert(Object[] row, boolean commitIndex) throws SQLException {
/*## LUCENE2 ##
......
h2/src/main/org/h2/res/help.csv
浏览文件 @ eb73ac3e
......@@ -1275,6 +1275,10 @@ Returns the name of the database."
DATABASE_PATH()
","
Returns the directory of the database files and the database name, if it is file based."
"Functions (System)","DECODE","
DECODE(value, whenValue, thenValue [,...])
","
Returns the first matching value."
"Functions (System)","FILE_READ","
FILE_READ(fileNameString [,encodingString])
","
......
h2/src/main/org/h2/schema/Schema.java
浏览文件 @ eb73ac3e
......@@ -578,8 +578,4 @@ public class Schema extends DbObjectBase {
}
}
public <V> HashMap<String, V> newStringMap() {
return database.newStringMap();
}
}
h2/src/main/org/h2/table/Table.java
浏览文件 @ eb73ac3e
......@@ -107,7 +107,7 @@ public abstract class Table extends SchemaObjectBase {
private Row nullRow;
public Table(Schema schema, int id, String name, boolean persistIndexes, boolean persistData) {
columnMap = schema.newStringMap();
columnMap = schema.getDatabase().newStringMap();
initSchemaObjectBase(schema, id, name, Trace.TABLE);
this.persistIndexes = persistIndexes;
this.persistData = persistData;
......
h2/src/main/org/h2/util/NetUtils.java
浏览文件 @ eb73ac3e
......@@ -46,7 +46,12 @@ public class NetUtils {
if (address == null) {
address = InetAddress.getLocalHost();
}
return createSocket(getHostAddress(address), port, ssl);
int test;
// try {
// return createSocket(getHostAddress(address), port, ssl);
// } catch (IOException e) {
return createSocket("localhost", port, ssl);
// }
}
/**
......
h2/src/test/org/h2/test/TestAll.java
浏览文件 @ eb73ac3e
......@@ -343,7 +343,7 @@ java org.h2.test.TestAll timer
System.setProperty("h2.useThreadContextClassLoader", "true");
int testing;
System.setProperty("h2.modifyOnWrite", "true");
// System.setProperty("h2.modifyOnWrite", "true");
// System.setProperty("h2.storeLocalTime", "true");
......
h2/src/test/org/h2/test/server/TestAutoServer.java
浏览文件 @ eb73ac3e
......@@ -35,10 +35,8 @@ public class TestAutoServer extends TestBase {
public void test() throws Exception {
testUnsupportedCombinations();
testAutoServer(false);
testAutoServer(true);
if (!config.big) {
int todo;
// testAutoServer(true);
testAutoServer(true);
}
testLinkedLocalTablesWithAutoServerReconnect();
}
......
h2/src/test/org/h2/test/unit/TestObjectDeserialization.java
浏览文件 @ eb73ac3e
......@@ -12,14 +12,18 @@ import org.h2.util.StringUtils;
import org.h2.util.Utils;
/**
* Tests the ability to deserialize objects that are not part of the system class-
* loading scope.
* Tests the ability to deserialize objects that are not part of the system
* class-loading scope.
*/
public class TestObjectDeserialization extends TestBase {
private static final String CLAZZ = "org.h2.test.unit.SampleObject";
private static final String OBJECT = "aced00057372001d6f72672e68322e746573742e756e69742e53616d706c654f626a65637400000000000000010200007870";
private static final String OBJECT =
"aced00057372001d6f72672e68322e746573742e756e69742e53616d706c654f626a65637400000000000000010200007870";
/**
* The thread context class loader was used.
*/
protected boolean usesThreadContextClassLoader;
/**
......@@ -37,6 +41,7 @@ public class TestObjectDeserialization extends TestBase {
}
private void testThreadContextClassLoader() throws Exception {
usesThreadContextClassLoader = false;
Thread.currentThread().setContextClassLoader(new TestClassLoader());
try {
Utils.deserialize(StringUtils.convertHexToBytes(OBJECT));
......
h2/src/tools/org/h2/build/doc/dictionary.txt
浏览文件 @ eb73ac3e
......@@ -693,5 +693,6 @@ enhancer banana nit cglib challenging intercepted banane assertthrows
objenesis prepend detecting overridable eater forgetting tear
fork tester jaspa redirection johnny brings gone jooq iciql offline pdo mappings largely
pst patadia summertime jalpesh scheme compilable ski takanori dsts kawashima
kokoci seldom jaros ciphers srcs
kokoci seldom jaros ciphers srcs invectorate noah nfontes fontes recoding
minecraft videos youtube dataflyer bukkit alessio adamo jacopo angel leon frost
deserializing
Markdown 格式
0% 或
您添加了 0 人 到此讨论。请谨慎行事。
请先完成此评论的编辑！
请 注册 或者 后发表评论