hi,
I am new beginner of Jboss. Hope somebody can give me a clear concept of the
following questions. Thanks in advance.
I setted up the DataSource in mysql-ds.xml file as follows:
<local-tx-datasource>
<jndi-name>MySqlDS</jndi-name>
<connection-url>jdbc:mysql://localhost:3306/home</connection-url>
<driver-class>com.mysql.jdbc.Driver</driver-class>
<user-name>root</user-name>
admin
<min-pool-size>5</min-pool-size>
<max-pool-size>20</max-pool-size>
<idle-timeout-minutes>5</idle-timeout-minutes>
</local-tx-datasource>
and when I start up the jboss, jboss printed out the following information:
Bound ConnectionManager 'jboss.jca:service=DataSourceBinding,name=MySqlDS' to
JNDI name 'java:MySqlDS'
and in the program, I was supposed to code as follows:
Context ctx = new InitialContext();
ds = (DataSource)ctx.lookup("java:MySqlDS");
So,
1). I want to know why I can't replace this sentence "ds =
(DataSource)ctx.lookup("java:MySqlDS");" as "ds =
(DataSource)ctx.lookup("java:comp/env/MySqlDS");"?
2). what is the difference between "java:MySqlDS" and "java:comp/env/MySqlDS"?
Someone told me that "java:comp/env/MySqlDS" is mostly used in real project,
but "java:MySqlDS" not.
3). I know "java:MySqlDS" is for getting a DataSource config in the *-ds.xml
file, however "java:/comp/env/MySqlDS" is for using JDBC connections, is my
opinion correct?
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