se.sics.isl.util
Class ConfigManager

java.lang.Object
  se.sics.isl.util.ConfigManager

Direct Known Subclasses:

ArgumentManager

public class ConfigManager
extends java.lang.Object

Field Summary

protected ConfigManager	parent
protected java.util.Properties	properties

Constructor Summary

ConfigManager()

ConfigManager(ConfigManager parent)

Method Summary

static int	compareVersion(java.lang.String version1, java.lang.String version2) Compares two versions of the format "major.minor.micro".
java.lang.Object[]	createInstances(java.lang.String configName, java.lang.Class type) Instantiates a number of objects based on names and types found in this configuration.
java.lang.Object[]	createInstances(java.lang.String configName, java.lang.Class type, java.lang.String[] names) Instantiates a number of objects based on the specified names and types found in this configuration.
java.lang.String	getProperty(java.lang.String name)
java.lang.String	getProperty(java.lang.String name, java.lang.String defaultValue)
java.lang.String[]	getPropertyAsArray(java.lang.String name)
java.lang.String[]	getPropertyAsArray(java.lang.String name, java.lang.String defaultValue)
boolean	getPropertyAsBoolean(java.lang.String name, boolean defaultValue)
double	getPropertyAsDouble(java.lang.String name, double defaultValue)
float	getPropertyAsFloat(java.lang.String name, float defaultValue)
int	getPropertyAsInt(java.lang.String name, int defaultValue)
long	getPropertyAsLong(java.lang.String name, long defaultValue)
void	loadConfiguration(java.io.InputStream input)
boolean	loadConfiguration(java.lang.String configFile)
boolean	loadConfiguration(java.net.URL configURL)
java.util.Enumeration	names() Returns an enumeration of the property names.
protected boolean	parseBoolean(java.lang.String name, java.lang.String value, boolean defaultValue)
protected double	parseDouble(java.lang.String name, java.lang.String value, double defaultValue)
protected float	parseFloat(java.lang.String name, java.lang.String value, float defaultValue)
protected int	parseInt(java.lang.String name, java.lang.String value, int defaultValue)
protected long	parseLong(java.lang.String name, java.lang.String value, long defaultValue)
void	setProperty(java.lang.String name, java.lang.String value)

Methods inherited from class java.lang.Object

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

Field Detail

parent

protected final ConfigManager parent

properties

protected final java.util.Properties properties

Constructor Detail

ConfigManager

public ConfigManager()

ConfigManager

public ConfigManager(ConfigManager parent)

Method Detail

loadConfiguration

public boolean loadConfiguration(java.lang.String configFile)

loadConfiguration

public boolean loadConfiguration(java.net.URL configURL)

loadConfiguration

public void loadConfiguration(java.io.InputStream input)
                       throws java.io.IOException

Throws:

java.io.IOException

names

public java.util.Enumeration names()

Returns an enumeration of the property names. Does not include inherited properties.

Returns:

an enumeration of the non-inherited property names

getProperty

public java.lang.String getProperty(java.lang.String name)

getProperty

public java.lang.String getProperty(java.lang.String name,
                                    java.lang.String defaultValue)

setProperty

public void setProperty(java.lang.String name,
                        java.lang.String value)

getPropertyAsArray

public java.lang.String[] getPropertyAsArray(java.lang.String name)

getPropertyAsArray

public java.lang.String[] getPropertyAsArray(java.lang.String name,
                                             java.lang.String defaultValue)

getPropertyAsInt

public int getPropertyAsInt(java.lang.String name,
                            int defaultValue)

getPropertyAsLong

public long getPropertyAsLong(java.lang.String name,
                              long defaultValue)

getPropertyAsFloat

public float getPropertyAsFloat(java.lang.String name,
                                float defaultValue)

getPropertyAsDouble

public double getPropertyAsDouble(java.lang.String name,
                                  double defaultValue)

getPropertyAsBoolean

public boolean getPropertyAsBoolean(java.lang.String name,
                                    boolean defaultValue)

parseInt

protected int parseInt(java.lang.String name,
                       java.lang.String value,
                       int defaultValue)

parseLong

protected long parseLong(java.lang.String name,
                         java.lang.String value,
                         long defaultValue)

parseFloat

protected float parseFloat(java.lang.String name,
                           java.lang.String value,
                           float defaultValue)

parseDouble

protected double parseDouble(java.lang.String name,
                             java.lang.String value,
                             double defaultValue)

parseBoolean

protected boolean parseBoolean(java.lang.String name,
                               java.lang.String value,
                               boolean defaultValue)

createInstances

public java.lang.Object[] createInstances(java.lang.String configName,
                                          java.lang.Class type)
                                   throws IllegalConfigurationException

Instantiates a number of objects based on names and types found in this configuration. The property "<configName>.names" is parsed as a comma separated list of object names. For each found object name, objectName, an instance is created from the class specified as "<configName>.<objectName>.class" (or the default class "<configName>.class". Each instance is checked to be of the specified type and an array of the specified type is returned with all the objects.

Parameters:

configName - the configuration name

type - the type of the objects

Returns:

the instantiated objects or null if no objects was specified

Throws:

IllegalConfigurationException - if an error occurs

createInstances

public java.lang.Object[] createInstances(java.lang.String configName,
                                          java.lang.Class type,
                                          java.lang.String[] names)
                                   throws IllegalConfigurationException

Instantiates a number of objects based on the specified names and types found in this configuration. For each specified object name, objectName, an instance is created from the class specified as "<configName>.<objectName>.class" (or the default class "<configName>.class". Each instance is checked to be of the specified type and an array of the specified type is returned with all the objects.

Parameters:

configName - the configuration name

type - the type of the objects

names - a list of names of object to instantiate

Returns:

the instantiated objects or null if no objects was specified

Throws:

IllegalConfigurationException - if an error occurs

compareVersion

public static int compareVersion(java.lang.String version1,
                                 java.lang.String version2)

Compares two versions of the format "major.minor.micro". A version with value null is always considered older than a version not having the value null.

Parameters:

version1 - the first version to compare

version2 - the second version to compare

Returns:

the value 0 if the versions are identical; a value less than 0 if the first version is older than the second version; and a value larger than 0 if the first version is newer than the second version.