Apache databaseConfiguration doesn't work with MapConfiguration - database

Question

I am trying to combine both mapConfiguration(file with properties) with databaseConfiguration. However only the file properties can be looked up but not the database properties. What am I doing wrong?
public class MapConfigProvider extends ConfigurationProvider {
Map properties = null;
public MapConfigProvider(Map inProps) {
super(MapConfiguration.class);
properties = inProps;
}
#Override
public AbstractConfiguration getConfiguration(ConfigurationDeclaration decl) throws Exception {
MapConfiguration mapConfig = new MapConfiguration(properties);
return mapConfig;
}
}
public class DatabaseConfigurationProvider extends ConfigurationProvider {
private DatabaseConfigDef dbConfigDef;
public DatabaseConfigurationProvider(DatabaseConfigDef databaseConfigDef)
{
super(DatabaseConfiguration.class);
this.dbConfigDef = databaseConfigDef;
}
public DatabaseConfigurationProvider() {
super();
}
#Override
public AbstractConfiguration getConfiguration(ConfigurationDeclaration decl) throws Exception {
DataSource ds = DataSourceFactory.getInstance().getDataSource(DATASOURCE.SEMS);
return new DatabaseConfiguration(ds, "CSW_TABLE", "PROP_COL", "VALUE_COL"); //String values sought from databaseConfigDef
}
}
private static final Map<String, Object> propertiesMap= new HashMap<String, Object>();
DefaultConfigurationBuilder builder = new DefaultConfigurationBuilder(propFileUrl);
builder.addConfigurationProvider("filebased", new MapConfigProvider(propertiesMap));
builder.addConfigurationProvider("ctkdatabase", new DatabaseConfigurationProvider(databaseConfigDef));
CombinedConfiguration combinedConfig = builder.getConfiguration(true);
String prop1 = combinedConfig.getString("WCM_WEBSERVICE_PORT"); //From DB, gets null
String prop2 = combinedConfig.getString("temp"); //From file, fetches good
LOGGER.info(prop1 + prop2);
What am I doing wrong? Please help.

Answer 1

1) In the propFileUrl: mainconfig.xml, I have to specify a
<configuration>
<header>
<result delimiterParsingDisabled="true" forceReloadCheck="false">
<nodeCombiner config-class="org.apache.commons.configuration.tree.OverrideCombiner" />
<expressionEngine config-class="org.apache.commons.configuration.tree.xpath.XPathExpressionEngine" />
</result>
</header>
<system /> <!-- load system properties into config -->
<properties fileName="common/datasources.properties" />
<properties fileName="application.properties" />
<ctkdatabase jndi="jdbc/shaDs" table="TABLE_APPL_PROPERTIES" keyColumn="PROP_NAME" valueColumn="PROP_VALUE"/>
<!-- load host's config file -->
<xml fileName="app/cluster/datasources.xml" />
</configuration>
2) Create a new getter/setter to "jndi" variable in DatabaseConfigDef class.
3) And change getConfiguration() to:
#Override
public AbstractConfiguration getConfiguration(ConfigurationDeclaration decl) throws Exception {
DatabaseConfigDef def = (DatabaseConfigDef)createBean(DatabaseConfigDef.class, decl, null);
Context env = (Context) new InitialContext().lookup("java:comp/env");
DataSource ds = (DataSource)env.lookup((def.getJndi()));
return new DatabaseConfiguration(ds, def.getTable(), def.getKeyColumn(), def.getValueColumn());
}