org.apache.uima.util.impl

Class Settings_impl

java.lang.Object

org.apache.uima.util.impl.Settings_impl

All Implemented Interfaces:

Settings

public class Settings_impl
extends Object
implements Settings

Class that reads properties files containing external parameter overrides used by the ExternalOverrideSettings_impl class. Similar to java.util.Properties but: supports UTF-8 files reverses priority in that duplicate key values are ignored, i.e. values cannot be changed arrays are represented as strings, e.g. '[elem1,elem2]', and can span multiple lines '\' can be used to escape $ [ , ] and the line-end

Author:

burn

Field Summary

Fields

Modifier and Type	Field and Description
protected static String	LOG_RESOURCE_BUNDLE

Constructor Summary

Constructors

Constructor and Description
Settings_impl()

Method Summary

Modifier and Type	Method and Description
Set<String>	getKeys() Return a set of keys of all properties in the map
void	load(InputStream in) Load properties from an input stream.
void	loadSystemDefaults() Load the files specified in the system property UimaExternalOverrides
String	lookUp(String name) Look up the value for a property.

Methods inherited from class java.lang.Object

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

Field Detail

LOG_RESOURCE_BUNDLE

protected static final String LOG_RESOURCE_BUNDLE

See Also:

Constant Field Values

Constructor Detail

Settings_impl

public Settings_impl()

Method Detail

getKeys

public Set<String> getKeys()

Return a set of keys of all properties in the map

Specified by:

getKeys in interface Settings

Returns:

- set of strings

load

public void load(InputStream in)
          throws IOException

Load properties from an input stream. Existing properties are not replaced (unlike java.util.Properties). May be called multiple times.

Specified by:

load in interface Settings

Parameters:

in - - Stream holding properties

Throws:

IOException - if name characters illegal

loadSystemDefaults

public void loadSystemDefaults()
                        throws ResourceConfigurationException

Load the files specified in the system property UimaExternalOverrides

Specified by:

loadSystemDefaults in interface Settings

Throws:

ResourceConfigurationException - wraps IOException

lookUp

public String lookUp(String name)
              throws ResourceConfigurationException

Look up the value for a property. Perform one substitution pass on ${key} substrings. If key is undefined throw an exception. Recursively evaluate the value to be substituted. NOTE: infinite loops not detected! To avoid evaluation and get ${key} in the output use a property to generate the $, e.g. $ = $ key = ${$}{key} or escape the $ key = \${key}

Specified by:

lookUp in interface Settings

Parameters:

name - - name to look up

Returns:

- value of property

Throws:

ResourceConfigurationException - if override variable references undefined variable