Package org.apache.commons.configuration2

# Class XMLPropertiesConfiguration

java.lang.Object
org.apache.commons.configuration2.event.BaseEventSource
org.apache.commons.configuration2.AbstractConfiguration
org.apache.commons.configuration2.BaseConfiguration
org.apache.commons.configuration2.XMLPropertiesConfiguration

All Implemented Interfaces:
  `Cloneable`, `Configuration`, `EventSource`, `FileBasedConfiguration`, `ImmutableConfiguration`, `FileBased`, `FileLocatorAware`, `SynchronizerSupport`

public class XMLPropertiesConfiguration extends BaseConfiguration implements FileBasedConfiguration, FileLocatorAware
This configuration implements the XML properties format introduced in Java, see https://docs.oracle.com/javase/8/docs/api/java/util/Properties.html. An XML properties file looks like this:

     <?xml version="1.0"?>
     <!DOCTYPE properties SYSTEM "http://java.sun.com/dtd/properties.dtd">
     <properties>
       <comment>Description of the property list</comment>
       <entry key="key1">value1</entry>
       <entry key="key2">value2</entry>
       <entry key="key3">value3</entry>
     </properties>

The Java runtime is not required to use this class. The default encoding for this configuration format is UTF-8. Note that unlike `PropertiesConfiguration`, `XMLPropertiesConfiguration` does not support includes. Note:Configuration objects of this type can be read concurrently by multiple threads. However if one of these threads modifies the object, synchronization has to be performed manually.

Since:
  1.1

- ## Field Summary

  Fields
  Modifier and Type
  Field
  Description
  `static final String`
  `DEFAULT_ENCODING`
  The default encoding (UTF-8 as specified by https://docs.oracle.com/javase/8/docs/api/java/util/Properties.html)

- ## Constructor Summary

  Constructors
  Constructor
  Description
  `XMLPropertiesConfiguration()`
  Creates an empty XMLPropertyConfiguration object which can be used to synthesize a new Properties file by adding values and then saving().
  `XMLPropertiesConfiguration(Element element)`
  Creates and loads the xml properties from the specified DOM node.

- ## Method Summary

  Modifier and Type
  Method
  Description
  `String`
  `getHeader()`
  Gets the header comment of this configuration.
  `void`
  `initFileLocator(FileLocator locator)`
  Initializes this object with a `FileLocator`.
  `void`
  `load(Element element)`
  Parses a DOM element containing the properties.
  `void`
  `read(Reader in)`
  Reads the content of this object from the given reader.
  `void`
  `save(Document document, Node parent)`
  Writes the configuration as child to the given DOM node
  `void`
  `setHeader(String header)`
  Sets the header comment of this configuration.
  `void`
  `write(Writer out)`
  Writes the content of this object to the given writer.

  ### Methods inherited from class org.apache.commons.configuration2.BaseConfiguration

  `addPropertyDirect, clearInternal, clearPropertyDirect, clone, containsKeyInternal, getKeysInternal, getPropertyInternal, isEmptyInternal, sizeInternal`

  ### Methods inherited from class org.apache.commons.configuration2.AbstractConfiguration

  `addErrorLogListener, addProperty, addPropertyInternal, append, beginRead, beginWrite, clear, clearProperty, cloneInterpolator, containsKey, copy, endRead, endWrite, get, get, getArray, getArray, getBigDecimal, getBigDecimal, getBigInteger, getBigInteger, getBoolean, getBoolean, getBoolean, getByte, getByte, getByte, getCollection, getCollection, getConfigurationDecoder, getConversionHandler, getDouble, getDouble, getDouble, getDuration, getDuration, getEncodedString, getEncodedString, getFloat, getFloat, getFloat, getInt, getInt, getInteger, getInterpolator, getKeys, getKeys, getKeys, getKeysInternal, getKeysInternal, getList, getList, getList, getList, getListDelimiterHandler, getLogger, getLong, getLong, getLong, getProperties, getProperties, getProperty, getShort, getShort, getShort, getString, getString, getStringArray, getSynchronizer, immutableSubset, initLogger, installInterpolator, interpolate, interpolate, interpolatedConfiguration, isEmpty, isScalarValue, isThrowExceptionOnMissing, lock, setConfigurationDecoder, setConversionHandler, setDefaultLookups, setInterpolator, setListDelimiterHandler, setLogger, setParentInterpolator, setPrefixLookups, setProperty, setPropertyInternal, setSynchronizer, setThrowExceptionOnMissing, size, subset, unlock`

  ### Methods inherited from class org.apache.commons.configuration2.event.BaseEventSource

  `addEventListener, clearErrorListeners, clearEventListeners, copyEventListeners, createErrorEvent, createEvent, fireError, fireEvent, getEventListenerRegistrations, getEventListeners, isDetailEvents, removeEventListener, setDetailEvents`

  ### Methods inherited from class java.lang.Object

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

  ### Methods inherited from interface org.apache.commons.configuration2.Configuration

  `addProperty, clear, clearProperty, getInterpolator, installInterpolator, setInterpolator, setProperty, subset`

  ### Methods inherited from interface org.apache.commons.configuration2.ImmutableConfiguration

  `containsKey, get, get, getArray, getArray, getBigDecimal, getBigDecimal, getBigInteger, getBigInteger, getBoolean, getBoolean, getBoolean, getByte, getByte, getByte, getCollection, getCollection, getDouble, getDouble, getDouble, getDuration, getDuration, getEncodedString, getEncodedString, getEnum, getEnum, getFloat, getFloat, getFloat, getInt, getInt, getInteger, getKeys, getKeys, getKeys, getList, getList, getList, getList, getLong, getLong, getLong, getProperties, getProperty, getShort, getShort, getShort, getString, getString, getStringArray, immutableSubset, isEmpty, size`

  ### Methods inherited from interface org.apache.commons.configuration2.sync.SynchronizerSupport

  `getSynchronizer, lock, setSynchronizer, unlock`

- ## Field Details

  - ### DEFAULT_ENCODING

    public static final String DEFAULT_ENCODING
    The default encoding (UTF-8 as specified by https://docs.oracle.com/javase/8/docs/api/java/util/Properties.html)

- ## Constructor Details

  - ### XMLPropertiesConfiguration

    public XMLPropertiesConfiguration()
    Creates an empty XMLPropertyConfiguration object which can be used to synthesize a new Properties file by adding values and then saving(). An object constructed by this C'tor can not be tickled into loading included files because it cannot supply a base for relative includes.

  - ### XMLPropertiesConfiguration

    public XMLPropertiesConfiguration(Element element) throws ConfigurationException
    Creates and loads the xml properties from the specified DOM node.
    Parameters:
      `element` - The DOM element
    Throws:
      `ConfigurationException` - Error while loading the properties file
    Since:
      2.0

- ## Method Details

  - ### getHeader

    public String getHeader()
    Gets the header comment of this configuration.
    Returns:
      the header comment

  - ### setHeader

    public void setHeader(String header)
    Sets the header comment of this configuration.
    Parameters:
      `header` - the header comment

  - ### read

    public void read(Reader in) throws ConfigurationException
    Description copied from interface: `FileBased`
    Reads the content of this object from the given reader. Client code should not call this method directly, but use a `FileHandler` for reading data.
    Specified by:
      `read` in interface `FileBased`
    Parameters:
      `in` - the reader
    Throws:
      `ConfigurationException` - if a non-I/O related problem occurs, e.g. the data read does not have the expected format

  - ### load

    public void load(Element element) throws ConfigurationException
    Parses a DOM element containing the properties. The DOM element has to follow the XML properties format introduced in Java, see https://docs.oracle.com/javase/8/docs/api/java/util/Properties.html
    Parameters:
      `element` - The DOM element
    Throws:
      `ConfigurationException` - Error while interpreting the DOM
    Since:
      2.0

  - ### write

    public void write(Writer out) throws ConfigurationException
    Description copied from interface: `FileBased`
    Writes the content of this object to the given writer. Client code should not call this method directly, but use a `FileHandler` for writing data.
    Specified by:
      `write` in interface `FileBased`
    Parameters:
      `out` - the writer
    Throws:
      `ConfigurationException` - if a non-I/O related problem occurs, e.g. the data read does not have the expected format

  - ### save

    public void save(Document document, Node parent)
    Writes the configuration as child to the given DOM node
    Parameters:
      `document` - The DOM document to add the configuration to
      `parent` - The DOM parent node
    Since:
      2.0

  - ### initFileLocator

    public void initFileLocator(FileLocator locator)
    Initializes this object with a `FileLocator`. The locator is accessed during load and save operations.
    Specified by:
      `initFileLocator` in interface `FileLocatorAware`
    Parameters:
      `locator` - the associated `FileLocator`