org.apache.lens.server.util
Class UtilityMethods

java.lang.Object
  org.apache.lens.server.util.UtilityMethods

public final class UtilityMethods
extends Object

The Class UtilityMethods.

Method Summary

static boolean	anyNull(Object... args) Any null.
static String	confToString(org.apache.hadoop.conf.Configuration conf) Conf to string.
static org.apache.commons.dbcp.BasicDataSource	getDataSourceFromConf(org.apache.hadoop.conf.Configuration conf) Gets the data source from conf.
static <K,V> void	mergeMaps(Map<K,V> into, Map<K,V> from, boolean override) Merge maps.
static String[]	queryDatabase(DataSource ds, String querySql, boolean allowNull, Object... args) Query database.
static String	removeDomain(String username) Removes the domain.

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

mergeMaps

public static <K,V> void mergeMaps(Map<K,V> into,
                                   Map<K,V> from,
                                   boolean override)

Merge maps.

Type Parameters:

K - the key type

V - the value type

Parameters:

into - the into

from - the from

override - the override

removeDomain

public static String removeDomain(String username)

Removes the domain.

Parameters:

username - the username

Returns:

the string

anyNull

public static boolean anyNull(Object... args)

Any null.

Parameters:

args - the args

Returns:

true, if successful

queryDatabase

public static String[] queryDatabase(DataSource ds,
                                     String querySql,
                                     boolean allowNull,
                                     Object... args)
                              throws SQLException

Query database.

Parameters:

ds - the ds

querySql - the query sql

allowNull - the allow null

args - the args

Returns:

the string[]

Throws:

SQLException - the SQL exception

getDataSourceFromConf

public static org.apache.commons.dbcp.BasicDataSource getDataSourceFromConf(org.apache.hadoop.conf.Configuration conf)

Gets the data source from conf.

Parameters:

conf - the conf

Returns:

the data source from conf

confToString

public static String confToString(org.apache.hadoop.conf.Configuration conf)

Conf to string.

Parameters:

conf - the conf

Returns:

the string