Objective:
Get the Liferay tables meta data information
We can get tables Meta Data from JDBC.
Liferay providing DataAccess.java class
from that we can open Connection to liferay default Database. Means we can
connect to lportal data base.
Once we get the connection we pass simple select
statement to statement object from that we can get Meta Data of table.
The
following is example code to get Meta data of User_ tables in Liferay
java.sql.Connection
con=null;
java.sql.Statement
st=null;
try{
con=com.liferay.portal.kernel.dao.jdbc.DataAccess.getConnection();
st
= con.createStatement();
java.sql.ResultSet
rs = st.executeQuery("SELECT * FROM user_");
java.sql.ResultSetMetaData
rsMetaData = rs.getMetaData();
int
numberOfColumns = rsMetaData.getColumnCount();
System.out.println("resultSet
MetaData column Count=" + numberOfColumns);
for
(int i = 1; i <= numberOfColumns; i++) {
System.out.println("column
MetaData ");
System.out.println("column
number " + i);
System.out.println(rsMetaData.getColumnName(i));
}
}catch(Exception
e){
}finally{
st.close();
con.close();
}
|
Note:
We need very much take care about connection
closing.
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