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

Methods

Modifier and Type	Method and Description
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 void	pipe(InputStream is, OutputStream os) Pipe input stream to output stream
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

pipe

public static void pipe(InputStream is,
        OutputStream os)
                 throws IOException

Pipe input stream to output stream

Parameters:

is - the is

os - the os

Throws:

IOException - Signals that an I/O exception has occurred.