Package 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>

Direct Known Subclasses:

ReadOnlyConfiguration

public 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

Field Summary

Fields inherited from class java.util.Properties

defaults

Constructor Summary

Constructors

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

Method Summary

Modifier and Type	Method	Description
static final String	convertToPath(String pathname)	Based upon Guava 14.0.1 (Chris Nokleberg, Colin Decker).
final Configuration	flatten()	Flattens the Properties hierarchies and returns a new Configuration object.
final Configuration	flatten(Configuration defaultConfiguration)	Flattens the Properties hierarchies and returns a new Configuration object.
final void	flattenInPlace()	Flattens the Properties hierarchies with this Configuration.
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.
final boolean	getBooleanProperty(String key)	Reads the given property from the configuration and interprets it as a boolean.
final boolean	getBooleanProperty(String key, boolean defaultValue)	Reads the given property from the configuration and interprets it as a boolean.
final double	getDoubleProperty(String key)	Reads the given property from the configuration and interprets it as a double.
final double	getDoubleProperty(String key, double defaultValue)	Reads the given property from the configuration and interprets it as a double.
final <T extends Enum<T>> T	getEnumProperty(String key, Class<T> enumType, T defaultValue)	Reads the given property from the configuration and interprets it as a double.
final int	getIntProperty(String key)	Reads the given property from the configuration and interprets it as an integer.
final int	getIntProperty(String key, int defaultValue)	Reads the given property from the configuration and interprets it as an integer.
final long	getLongProperty(String key)	Reads the given property from the configuration and interprets it as a long.
final long	getLongProperty(String key, long defaultValue)	Reads the given property from the configuration and interprets it as a long.
final String	getPathProperty(String key)	Reads the given property from the configuration and interprets it as a path.
final Configuration	getPropertiesStartingWith(String prefix)	Flattens the Properties hierarchies and returns a Configuration object containing only keys starting with the prefix.
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.
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.
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.
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.
final String	getStringProperty(String key)	Reads the given property from the configuration and interprets it as a string.
final String	getStringProperty(String key, String defaultValue)	Reads the given property from the configuration and interprets it as a string.
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.
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	setProperty(String key, boolean value)	Convenience method to set boolean-valued properties.
void	setProperty(String key, double value)	Convenience method to set double-valued properties.
void	setProperty(String key, int value)	Convenience method to set int-valued properties.
void	setProperty(String key, long value)	Convenience method to set long-valued properties.
void	setStringArrayProperty(String key, String[] value)	Sets a property to the given string array.
static final String	toProperty(Object[] values)	Converts the Object[] to a String split by '|'.

Methods inherited from class java.util.Properties

clear, clone, compute, computeIfAbsent, computeIfPresent, contains, containsKey, containsValue, elements, entrySet, equals, forEach, getOrDefault, hashCode, isEmpty, keys, keySet, list, list, load, load, loadFromXML, merge, propertyNames, putAll, putIfAbsent, rehash, remove, remove, replace, replace, replaceAll, save, setProperty, size, store, store, storeToXML, storeToXML, storeToXML, stringPropertyNames, toString, values

Methods inherited from class java.lang.Object

finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Details

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 Details

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 the empty string, if the property does not exist.

getStringProperty

public final String getStringProperty(String key,
 String defaultValue)

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

Parameters:

key - The key of the property.

defaultValue - The default value for the given key

Returns:

A string with the value of the given property or the given defaultValue, 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.

getBooleanProperty

public final boolean getBooleanProperty(String key,
 boolean defaultValue)

Reads the given property from the configuration and interprets it as a boolean. If no value exists for this property, the given default value is returned.

Parameters:

key - The key of the property.

defaultValue - The default value for this property

Returns:

A boolean with the value of the given property or the default value

setProperty

public void setProperty(String key,
 boolean value)

Convenience method to set boolean-valued properties.

Parameters:

key - The key to be placed in this configuration

value - The value to be stored for the given key

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 zero, if the property does not exist.

getIntProperty

public final int getIntProperty(String key,
 int defaultValue)

Reads the given property from the configuration and interprets it as an integer. If no value exists for this property, the given default value is returned.

Parameters:

key - The key of the property.

defaultValue - The default value for this property

Returns:

An integer with the value of the given property or the default value

setProperty

public void setProperty(String key,
 int value)

Convenience method to set int-valued properties.

Parameters:

key - The key to be placed in this configuration

value - The value to be stored for the given key

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.

getLongProperty

public final long getLongProperty(String key,
 long defaultValue)

Reads the given property from the configuration and interprets it as a long. If no value exists for this property, the given default value is returned.

Parameters:

key - The key of the property.

defaultValue - The default value for this property

Returns:

A long with the value of the given property or the default value

setProperty

public void setProperty(String key,
 long value)

Convenience method to set long-valued properties.

Parameters:

key - The key to be placed in this configuration

value - The value to be stored for the given key

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.

getDoubleProperty

public final double getDoubleProperty(String key,
 double defaultValue)

Reads the given property from the configuration and interprets it as a double. If no value exists for this property, the given default value is returned.

Parameters:

key - The key of the property.

defaultValue - The default value for this property

Returns:

A double with the value of the given property or the default value

getEnumProperty

public final <T extends Enum<T>> T getEnumProperty(String key,
 Class<T> enumType,
 T defaultValue)

Reads the given property from the configuration and interprets it as a double. If no value exists for this property, the given default value is returned.

Parameters:

key - The key of the property.

defaultValue - The default value for this property

Returns:

A double with the value of the given property or the default value

setProperty

public void setProperty(String key,
 double value)

Convenience method to set double-valued properties.

Parameters:

key - The key to be placed in this configuration

value - The value to be stored for the given key

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 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 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 Properties

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 Properties

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.