kieker.common.configuration
Class Configuration

java.lang.Object
  java.util.Dictionary<K,V>
      java.util.Hashtable<Object,Object>
          java.util.Properties
              kieker.common.configuration.Configuration

All Implemented Interfaces:

Serializable, Cloneable, Map<Object,Object>

public final class Configuration
extends Properties

This class represents a configuration object within the Kieker project. Technically it is a property list with some additional methods and possibilities.
Some of the methods are marked as deprecated. This is not because they will be removed, but rather because they should not be used anymore (at least not directly - they are still used in a valid way within this class). Normally we would remove them, but they are inherited from the class Properties and can neither be removed nor get a lower visibility modificator.

Since:

1.5

Author:

Jan Waller

See Also:

Serialized Form

Constructor Summary

Configuration()
Creates a new (empty) configuration.

Configuration(Properties defaults)
Creates a new instance of this class using the given parameters.

Method Summary

static String	convertToPath(String pathname) Based upon Guava 14.0.1 (Chris Nokleberg, Colin Decker).
Configuration	flatten() Flattens the Properties hierarchies and returns a new Configuration object.
Configuration	flatten(Configuration defaultConfiguration) Flattens the Properties hierarchies and returns a new Configuration object.
void	flattenInPlace() Flattens the Properties hierarchies with this Configuration.
Object	get(Object key) Deprecated. This method will not be removed (as this is for technical reasons not possible), but should only be used within this class. Don't call this method directly.
boolean	getBooleanProperty(String key) Reads the given property from the configuration and interprets it as a boolean.
double	getDoubleProperty(String key) Reads the given property from the configuration and interprets it as a double.
int	getIntProperty(String key) Reads the given property from the configuration and interprets it as an integer.
long	getLongProperty(String key) Reads the given property from the configuration and interprets it as a long.
String	getPathProperty(String key) Reads the given property from the configuration and interprets it as a path.
Configuration	getPropertiesStartingWith(String prefix) Flattens the Properties hierarchies and returns a Configuration object containing only keys starting with the prefix.
String	getProperty(String key) Deprecated. This method will not be removed (as this is for technical reasons not possible), but should only be used within this class. Don't call this method directly.
String	getProperty(String key, String defaultValue) Deprecated. This method will not be removed (as this is for technical reasons not possible), but should only be used within this class. Don't call this method directly.
String[]	getStringArrayProperty(String key) Interprets the property (defined by the given key) as an array of values and transforms it into a real array.
String[]	getStringArrayProperty(String key, String split) Interprets the property (defined by the given key) as an array of values and transforms it into a real array.
String	getStringProperty(String key) Reads the given property from the configuration and interprets it as a string.
Object	put(Object key, Object value) Deprecated. This method will not be removed (as this is for technical reasons not possible), but should only be used within this class. Don't call this method directly.
void	setDefaultConfiguration(Configuration defaultConfiguration) You should know what you do if you use this method! Currently it is used for a (dirty) hack to add default configurations to Writers or AnalysisPlugins.
void	setStringArrayProperty(String key, String[] value) Sets a property to the given string array.
static String	toProperty(Object[] values) Converts the Object[] to a String split by '|'.

Methods inherited from class java.util.Properties

list, list, load, loadFromXML, propertyNames, save, setProperty, store, storeToXML, storeToXML

Methods inherited from class java.util.Hashtable

clear, clone, contains, containsKey, containsValue, elements, entrySet, equals, hashCode, isEmpty, keys, keySet, putAll, remove, size, toString, values

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

Configuration

public Configuration()

Creates a new (empty) configuration.

Configuration

public Configuration(Properties defaults)

Creates a new instance of this class using the given parameters.

Parameters:

defaults - The property object which delivers the default values for the new configuration.

Method Detail

getStringProperty

public final String getStringProperty(String key)

Reads the given property from the configuration and interprets it as a string.

Parameters:

key - The key of the property.

Returns:

A string with the value of the given property or null, if the property does not exist.

getBooleanProperty

public final boolean getBooleanProperty(String key)

Reads the given property from the configuration and interprets it as a boolean.

Parameters:

key - The key of the property.

Returns:

A boolean with the value of the given property or null, if the property does not exist.

getIntProperty

public final int getIntProperty(String key)

Reads the given property from the configuration and interprets it as an integer.

Parameters:

key - The key of the property.

Returns:

An integer with the value of the given property or null, if the property does not exist.

getLongProperty

public final long getLongProperty(String key)

Reads the given property from the configuration and interprets it as a long.

Parameters:

key - The key of the property.

Returns:

A long with the value of the given property or null, if the property does not exist.

getDoubleProperty

public final double getDoubleProperty(String key)

Reads the given property from the configuration and interprets it as a double.

Parameters:

key - The key of the property.

Returns:

A long with the value of the given property or null, if the property does not exist.

getPathProperty

public final String getPathProperty(String key)

Reads the given property from the configuration and interprets it as a path.

Parameters:

key - The key of the property.

Returns:

A string with the value of the given property or null, if the property does not exist.

getStringArrayProperty

public final String[] getStringArrayProperty(String key)

Interprets the property (defined by the given key) as an array of values and transforms it into a real array. Property values have to be split by '|'.

Parameters:

key - The key of the property.

Returns:

A string array containing the single values of the properties.

setStringArrayProperty

public final void setStringArrayProperty(String key,
                                         String[] value)

Sets a property to the given string array. Note that the values must not contain the separator character '|'.

Parameters:

key - The key of the property to change

value - The array to set

getStringArrayProperty

public final String[] getStringArrayProperty(String key,
                                             String split)

Interprets the property (defined by the given key) as an array of values and transforms it into a real array. Property values have to be split by 'split'.

Parameters:

split - a regular expression

key - The key of the property.

Returns:

A string array containing the single values of the properties.

See Also:

toProperty(Object[])

toProperty

public static final String toProperty(Object[] values)

Converts the Object[] to a String split by '|'.

Parameters:

values - The values which will be transformed into a string.

Returns:

A string representation of the given values array.

See Also:

getStringArrayProperty(String), getStringArrayProperty(String, String)

convertToPath

public static final String convertToPath(String pathname)

Based upon Guava 14.0.1 (Chris Nokleberg, Colin Decker). Guava is licensed under "The Apache Software License, Version 2.0".

Simplifies a given file system path.

Parameters:

pathname - The path to be simplified.

Returns:

A simplified version of the given path.

getPropertiesStartingWith

public final Configuration getPropertiesStartingWith(String prefix)

Flattens the Properties hierarchies and returns a Configuration object containing only keys starting with the prefix.

Parameters:

prefix - The prefix to be used during the flattening.

Returns:

A new configuration object with a flattened properties hierarchy.

flatten

public final Configuration flatten(Configuration defaultConfiguration)

Flattens the Properties hierarchies and returns a new Configuration object.

Parameters:

defaultConfiguration - The configuration which will be used as a base.

Returns:

A new configuration object with a flattened properties hierarchy.

flatten

public final Configuration flatten()

Flattens the Properties hierarchies and returns a new Configuration object.

Returns:

A new configuration object with a flattened properties hierarchy.

flattenInPlace

public final void flattenInPlace()

Flattens the Properties hierarchies with this Configuration. Afterwards, all Properties will still be present and defaults will be null.

setDefaultConfiguration

public final void setDefaultConfiguration(Configuration defaultConfiguration)

You should know what you do if you use this method! Currently it is used for a (dirty) hack to add default configurations to Writers or AnalysisPlugins.

Parameters:

defaultConfiguration - The default configuration for this configuration object.

put

@Deprecated
public final Object put(Object key,
                                   Object value)

Deprecated. This method will not be removed (as this is for technical reasons not possible), but should only be used within this class. Don't call this method directly.

Puts a given key value pair into the container. This method should never be used directly! Use Properties.setProperty(String, String) instead!

Specified by:

put in interface Map<Object,Object>

Overrides:

put in class Hashtable<Object,Object>

Parameters:

key - The key which will be used to store the given value.

value - The value to store.

Returns:

The old object which was stored under the given key or null if there wasn't a value before.

get

@Deprecated
public final Object get(Object key)

Deprecated. This method will not be removed (as this is for technical reasons not possible), but should only be used within this class. Don't call this method directly.

Searches for a given key. This method should never be used directly! Use getStringProperty(String) instead!

Specified by:

get in interface Map<Object,Object>

Overrides:

get in class Hashtable<Object,Object>

Parameters:

key - The key for the value in question.

Returns:

The value for the specified key if available, null otherwise.

getProperty

@Deprecated
public final String getProperty(String key)

Deprecated. This method will not be removed (as this is for technical reasons not possible), but should only be used within this class. Don't call this method directly.

Searches for a given property key. This method should never be used directly! Use getStringProperty(String) instead!

Overrides:

getProperty in class Properties

Parameters:

key - The key for the property in question.

Returns:

The property for the specified key if available, null otherwise.

getProperty

@Deprecated
public final String getProperty(String key,
                                           String defaultValue)

Deprecated. This method will not be removed (as this is for technical reasons not possible), but should only be used within this class. Don't call this method directly.

Searches for a given property key. This method should never be used directly!

Overrides:

getProperty in class Properties

Parameters:

key - The key for the property in question.

defaultValue - The default value to be returned.

Returns:

The property for the specified key if available, the given default value otherwise.