hsqldb

I was trying to connect to a hsql db. I created one by running from C:\myhsql: java -cp .;C:\hsql\lib\hsqldb.jar org.hsqldb.Server -database.0 file:db\mydb -dbname.0 MYDB This created mydb in a directory called db . This folder now has a .lck,tmp,script,properties files with name mydb, and similar files with name MYDB in current folder . In java code I tried Class.forName("org.hsqldb.jdbcDriver"); connection = DriverManager.getConnection("jdbc:hsqldb:file:db/sjdb", "SA", ""); When I run the program, I am getting this error: java.sql.SQLException: Database lock acquisition failure: lockFile:

In my project I can successfully test database code. I'm using Spring, Hibernate, HSQLDB, JUnit and Maven. The catch is that currently I have to launch HSQLDB manually prior to running the tests. What is the best way to automate the launching of HSQLDB with the technologies being used? I am assuming that with hsql you are referring to HSQLDB . Configure your database url for JDBC drivers (for hibernate etc) to embedded memory based version of HSQLDB: jdbc:hsqldb:mem:myunittests Then a inprocess version of HSQLDB automatically starts that stores stuff to memory. No need to start any external

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I want to use HSQLDB as an embedded database but am having trouble getting it to auto-increment . As far as I understand, [CALL] IDENTITY() can be used to get the last primary key value. However, experiments through both iBatis and HSQLDB's DatabaseManagerSwing continually return a 0 value. How can I get auto-incrementation to work with HSQLDB? Edit: I didn't mention that I'm using DDLUtils to autogenerate tables. The following does not suit HSQLDB: <?xml version="1.0"?> <!DOCTYPE database SYSTEM "http://db.apache.org/torque/dtd/database.dtd

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 由 翻译 强力驱动 问题: HSQLDB 2.0 is soon to be released. I wonder if it will outperform H2 since, as far as I know, most users prefer H2 than HSQLDB. I am interested in the MVCC support of HSQLDB 2.0. I have learned that MVCC on H2 is still experimental. With regards to support/documentation, concurrency, performance, which is better between the two? 回答1: I am the developer of a database abstraction library ( jOOQ ), which supports both databases. My 130+ integration tests cover a lot of functionality, including the calling of stored procedures and

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: What I want to do How to get maven/eclipse to point to 2.3.2 jar instead? Connect to the HSQL db via Java/jdbc (I assume I should be able to do this once I have solved the above) My settings It seems that my hsql server is using 2.3.4. However I do not see why my local Eclipse (the client) is using 2.1.0.0. I have set up maven and it seems to be pointing to the 2.3.2 jar. How my Eclipse package explorer looks Other things I have checked / done Updated my path variables in my bash_profile ( export HSQL_HOME=/Users/user/hsqldb; export PATH=

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I'm using an embedded HSQLDB 2.3.2 instance to store XML documents as LOBs for a while in an application which has intermittent connection to wherever the documents are supposed to end. To limit HSQBDL's .lobs file size growth, I enabled LOB compression through the jdbc connection URL as mentioned in the documentation (using hsqldb.lob_compressed=true), but from what I've recently discovered this URL parameter has no effect whatsoever. If I understand the HSQLDB JDBC URL parsing code correctly, org.hsqldb.persist.Logger#setVariables() should

I use hsqldb to run my unit tests that need a database access. For the moment, when I want to create a table for a specific test, I have the following code: private void createTable() { PreparedStatement ps; try { ps = getConnection().prepareStatement("CREATE TABLE T_DATE (ID NUMERIC PRIMARY KEY, DATEID TIMESTAMP)"); ps.executeUpdate(); } catch (SQLException e) { e.printStackTrace(); } } The getConnection() method retrieve a DataSource defined in a Spring context: <bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource"> <property name="driverClassName" value=