org.apache.avalon.framework.configuration.Configuration类的使用及代码示例

x33g5p2x  于2022-01-18 转载在 其他  
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本文整理了Java中org.apache.avalon.framework.configuration.Configuration类的一些代码示例，展示了Configuration类的具体用法。这些代码示例主要来源于Github/Stackoverflow/Maven等平台，是从一些精选项目中提取出来的代码，具有较强的参考意义，能在一定程度帮忙到你。Configuration类的具体详情如下：
包路径：org.apache.avalon.framework.configuration.Configuration
类名称：Configuration

Configuration介绍

[英]Configuration is a interface encapsulating a configuration node used to retrieve configuration values.

This is a "read only" interface preventing applications from modifying their own configurations. Once it is created, the information never changes.

Data Model

The data model is a subset of XML's; a single-rooted hierarchical tree where each node can contain multiple attributes, and leaf nodes can also contain a value. Reflecting this, Configurations are usually built from an XML file by the DefaultConfigurationBuilder class, or directly by a SAX parser using a SAXConfigurationHandler or NamespacedSAXConfigurationHandler event handler.

Namespace support

Since version 4.1, each Configuration node has a namespace associated with it, in the form of a string, accessible through #getNamespace. If no namespace is present, getNamespace will return blank (""). See DefaultConfigurationBuilder for details on how XML namespaces are mapped to Configuration namespaces.

Example

As an example, consider two Configurations (with and without namespaces) built from this XML:

<my-system version="1.3" xmlns:doc="http://myco.com/documentation"> 
<doc:desc>This is a highly fictitious config file</doc:desc> 
<widget name="fooWidget" initOrder="1" threadsafe="true"/> 
</my-system>

If namespace support is enabled (eg through DefaultConfigurationBuilder#DefaultConfigurationBuilder(boolean) new DefaultConfigurationBuilder(true)), then the xmlns:doc element will not translate into a Configuration attribute, and the doc:desc element will become a Configuration node with name "desc" and namespace "http://myco.com/documentation". The widget element will have namespace "".

If namespace support is disabled (the default for DefaultConfigurationBuilder), the above XML will translate directly to Configuration nodes. The my-system node will have an attribute named "xmlns:doc", and a child called "doc:desc".

Assuming the Configuration object is named conf, here is how the data could be retrieved:
CodeNo namespacesWith namespacesconf. #getName()my-systemconf. #getAttributeNames().length21conf. #getChildren()().length2conf. #getAttributeAsFloat(String)("version")1.3conf. #getChild(String)("widget"). #getAttribute(String)("name")fooWidgetconf. #getChild(String)("widget") . #getAttributeAsBoolean(String)("threadsafe")``true``conf. #getChild(String)("widget"). #getLocation()file:///home/jeff/tmp/java/avalon/src/java/new.xconf:4:60conf. #getChild(String)("desc"). #getName()desc (see #getChild(String))descconf. #getChild(String)("doc:desc"). #getName()doc:descdoc:desc (see #getChild(String))conf. #getChild(String)("desc"). #getValue()()ConfigurationExceptionThis is a highly fictitious config fileconf. #getChild(String)("doc:desc"). #getValue()()This is a highly fictitious config fileConfigurationExceptionconf. #getChild(String)("desc"). #getNamespace() http://myco.com/documentation"

Type-safe utility methods are provided for retrieving attribute and element values as String, int, long, float and boolean.

Miscellanea

Currently, the configuration tree can only be traversed one node at a time, eg., through #getChild(String) or #getChildren(). In a future release, it may be possible to access child nodes with an XPath-like syntax.

Checking for the existence of an attribute can be done as follows:

String value = conf.getAttribute( "myAttribute", null ); 
if ( null == value ) 
{ 
// Do the processing applicable if the attribute isn't present. 
}

[中]Configuration是封装用于检索配置值的配置节点的接口。
这是一个“只读”接口，防止应用程序修改自己的配置。一旦创建，信息就永远不会更改。
####数据模型
数据模型是XML的子集；单根层次树，其中每个节点可以包含多个属性，叶节点也可以包含一个值。考虑到这一点，Configuration通常由DefaultConfigurationBuilder类从XML文件构建，或直接由SAX解析器使用SAXConfigurationHandler或NamespacedSAXConfigurationHandler事件处理程序构建。
#####命名空间支持
从版本4.1开始，每个Configuration节点都有一个与之关联的名称空间，以字符串的形式，可通过#getNamespace访问。如果不存在名称空间，getNamespace将返回空白（“”）。有关如何将XML命名空间映射到Configuration命名空间的详细信息，请参阅DefaultConfigurationBuilder。
####范例
作为一个例子，考虑两个[$$ 5 ] s（有和没有命名空间）从这个XML构建的：

<my-system version="1.3" xmlns:doc="http://myco.com/documentation"> 
<doc:desc>This is a highly fictitious config file</doc:desc> 
<widget name="fooWidget" initOrder="1" threadsafe="true"/> 
</my-system>

如果启用了名称空间支持（例如通过DefaultConfigurationBuilder#DefaultConfigurationBuilder（布尔值）new DefaultConfigurationBuilder（true）），则xmlns:doc元素将不会转换为配置属性，doc:desc元素将成为名为“desc”和名称空间的Configuration节点http://myco.com/documentation“。widget元素将具有命名空间“”。
如果禁用了命名空间支持（DefaultConfigurationBuilder的默认设置），则上述XML将直接转换为Configuration节点。my-system节点将有一个名为“xmlns:doc”的属性和一个名为“doc:desc”的子节点。
假设Configuration对象名为conf，以下是如何检索数据：
CodeNo名称空间具有名称空间conf. #getName()我的系统conf. #getAttributeNames().length21conf. #getChildren()().length2conf. #getAttributeAsFloat(String)("version")1.3conf. #getChild(String)("widget"). #getAttribute(String)("name")fooWidget[$19$]true``conf. #getChild(String)("widget"). #getLocation()file:///home/jeff/tmp/java/avalon/src/java/new.xconf:4:60这是一个高度虚构的配置文件配置异常conf. #getChild(String)("desc"). #getNamespace()http://myco.com/documentation"
类型安全实用程序方法用于检索属性和元素值，如String、int、long、float和boolean。
####杂集
目前，配置树一次只能遍历一个节点，例如通过#getChild（String）或#getchilds（）。在未来的版本中，可以使用类似XPath的语法访问子节点。
检查属性是否存在可按如下方式进行：

String value = conf.getAttribute( "myAttribute", null ); 
if ( null == value ) 
{ 
// Do the processing applicable if the attribute isn't present. 
}

代码示例

代码示例来源：origin: plutext/docx4j

if (cfg.getChild("use-cache", false) != null) {
  try {
    fontManager.setUseCache(
        cfg.getChild("use-cache").getValueAsBoolean());
  } catch (ConfigurationException mfue) {
    LogUtil.handleException(log, mfue, true);
if (cfg.getChild("font-base", false) != null) {
  try {
    fontManager.setFontBaseURL(
        cfg.getChild("font-base").getValue(null));
  } catch (MalformedURLException mfue) {
    LogUtil.handleException(log, mfue, true);
Configuration fontsCfg = cfg.getChild("fonts", false);
if (fontsCfg != null) {
  Configuration substitutionsCfg = fontsCfg.getChild("substitutions", false);
  if (substitutionsCfg != null) {
    FontSubstitutionsConfigurator fontSubstitutionsConfigurator
  Configuration referencedFontsCfg = fontsCfg.getChild("referenced-fonts", false);
  if (referencedFontsCfg != null) {
    createReferencedFontsMatcher(referencedFontsCfg, strict, fontManager);

代码示例来源：origin: plutext/docx4j

private static void createReferencedFontsMatcher(Configuration referencedFontsCfg,
    boolean strict, FontManager fontManager) throws FOPException {
  List matcherList = new java.util.ArrayList();
  Configuration[] matches = referencedFontsCfg.getChildren("match");
  for (int i = 0; i < matches.length; i++) {
    try {
      matcherList.add(new FontFamilyRegExFontTripletMatcher(
          matches[i].getAttribute("font-family")));
    } catch (ConfigurationException ce) {
      LogUtil.handleException(log, ce, strict);
      continue;
    }
  }
  FontTriplet.Matcher orMatcher = new OrFontTripletMatcher(
      (FontTriplet.Matcher[])matcherList.toArray(
          new FontTriplet.Matcher[matcherList.size()]));
  fontManager.setReferencedFontsMatcher(orMatcher);
}

代码示例来源：origin: plutext/docx4j

/**
   * Configures a font substitution catalog
   *
   * @param substitutions font substitutions
   * @throws FOPException if something's wrong with the config data
   */
  public void configure(FontSubstitutions substitutions) throws FOPException {
    Configuration[] substitutionCfgs = cfg.getChildren("substitution");
    for (int i = 0; i < substitutionCfgs.length; i++) {
      Configuration fromCfg = substitutionCfgs[i].getChild("from", false);
      if (fromCfg == null) {
        throw new FOPException("'substitution' element without child 'from' element");
      }
      Configuration toCfg = substitutionCfgs[i].getChild("to", false);
      if (fromCfg == null) {
        throw new FOPException("'substitution' element without child 'to' element");
      }
      FontQualifier fromQualifier = getQualfierFromConfiguration(fromCfg);
      FontQualifier toQualifier = getQualfierFromConfiguration(toCfg);
      FontSubstitution substitution = new FontSubstitution(fromQualifier, toQualifier);
      substitutions.add(substitution);
    }
  }
}

代码示例来源：origin: org.apache.fulcrum/fulcrum-factory

@Override
public void configure(Configuration conf) throws ConfigurationException 
{
  final Configuration[] loaders = conf.getChildren(CLASS_LOADER);
  if (loaders != null) 
  {
    loaderNames = new String[loaders.length];
    for (int i = 0; i < loaders.length; i++) 
    {
      loaderNames[i] = loaders[i].getValue();
    }
  }
  final Configuration factories = conf.getChild(OBJECT_FACTORY, false);
  if (factories != null) 
  {
    // Store the factory to the table as a string and
    // instantiate it by using the service when needed.
    Configuration[] nameVal = factories.getChildren();
    for (Configuration entry : nameVal)
      objectFactoryClasses.put(entry.getName(), entry.getValue());
  }
}

代码示例来源：origin: org.apache.fulcrum/fulcrum-yaafi

/**
 * @see org.apache.avalon.framework.configuration.Configurable#configure(org.apache.avalon.framework.configuration.Configuration)
 */
public void configure(Configuration configuration) throws ConfigurationException {
  super.configure(configuration);
  this.maxArgLength = configuration.getChild("maxArgLength").getValueAsInteger(MAX_ARG_LENGTH);
  this.toStringBuilderClassName = configuration.getChild("toStringBuilderClass")
      .getValue(ArgumentToStringBuilderImpl.class.getName());
  this.monitorAllExceptions = configuration.getChild("monitorAllExceptions").getValueAsBoolean(true);
}

代码示例来源：origin: org.apache.cocoon/cocoon-sitemap-impl

public ProcessingNode buildNode(Configuration config) throws Exception {
  String actionSetName = config.getAttribute("name");
  Configuration[] childrenConfig = config.getChildren();
  for (int i = 0; i < childrenConfig.length; i++) {
    Configuration childConfig = childrenConfig[i];
    String name = childConfig.getName();
      actions[i] = childConfig.getAttribute("action", null);
    } else {
      String msg = "Unknown element " + name + " in action-set at " + childConfig.getLocation();
      throw new ConfigurationException(msg);

代码示例来源：origin: org.codehaus.plexus/plexus-ftpd

/**
 * Configure user manager - third step.
 */
public void configure(Configuration config) throws ConfigurationException {
  mConfig = config;
  Configuration adminConf = mConfig.getChild("ftp-admin-name", false);
  mstAdminName = "admin";
  if(adminConf != null) {
    mstAdminName = adminConf.getValue(mstAdminName);
  }
  mBaseDirectory = config.getChild("base-directory").getValue(null);
  if(mBaseDirectory == null)
    throw new ConfigurationException("Missing configuration element 'base-directory'");
}

代码示例来源：origin: org.apache.fulcrum/fulcrum-yaafi

/**
 * @see org.apache.avalon.framework.configuration.Configurable#configure(Configuration)
 */
public void configure(Configuration configuration) throws ConfigurationException {
  super.configure(configuration);
  this.reportTimeout = configuration.getChild("reportTimeout").getValueAsLong(0);
  // parse the performance monitor class name
  this.performanceMonitorClassName = configuration.getChild("performanceMonitorClassName")
      .getValue(DEFAULT_PERFORMANCEMONITOR_CLASSNAME);
  // parse the report file name
  String reportFileName = configuration.getChild("reportFile").getValue("./javasimon.html");
  this.reportFile = this.makeAbsoluteFile(reportFileName);
  // determine when to create the next report
  this.nextReportTimestamp = System.currentTimeMillis() + this.reportTimeout;
  // do we create a report on disposal
  this.reportOnExit = configuration.getChild("reportOnExit").getValueAsBoolean(false);
}

代码示例来源：origin: org.apache.fulcrum/fulcrum-security-api

/**
 * Avalon component lifecycle method
 */
@Override
public void configure(Configuration conf) throws ConfigurationException
{
  algorithm = conf.getChild("algorithm").getValue();
  cipher = conf.getChild("cipher").getValue();
}

代码示例来源：origin: org.apache.fulcrum/fulcrum-yaafi

this.reconfigurationDelay = configuration.getChild(RECONFIGURATION_DELAY_KEY)
    .getValueAsInteger(RECONFIGURATION_DELAY_DEFAULT);
this.disposalDelay = configuration.getChild(DISPOSAL_DELAY_KEY).getValueAsInteger(DISPOSAL_DELAY_DEFAULT);
this.hasDynamicProxies = configuration.getChild(DYNAMICPROXY_ENABLED_KEY).getValueAsBoolean(false);
    configuration.getChild(CONTAINERFLAVOUR_CONFIG_KEY).getValue(COMPONENT_CONTAINERFLAVOUR_VALUE));
Configuration currComponentRoles = configuration.getChild(COMPONENT_ROLE_KEYS);
    currComponentRoles.getChild(COMPONENT_LOCATION_KEY).getValue(COMPONENT_ROLE_VALUE));
    currComponentRoles.getChild(CONTAINERFLAVOUR_CONFIG_KEY).getValue(COMPONENT_ROLECONFIGFLAVOUR_VALUE));
this.setComponentRolesEncrypted(currComponentRoles.getChild(COMPONENT_ISENCRYPTED_KEY).getValue("false"));
Configuration currComponentConfiguration = configuration.getChild(COMPONENT_CONFIG_KEY);
    currComponentConfiguration.getChild(COMPONENT_LOCATION_KEY).getValue(COMPONENT_CONFIG_VALUE));
    currComponentConfiguration.getChild(COMPONENT_ISENCRYPTED_KEY).getValue("false"));
this.componentConfigurationPropertiesResolverConfig = configuration.getChild(COMPONENT_CONFIG_PROPERTIES_KEY);
Configuration currParameters = configuration.getChild(COMPONENT_PARAMETERS_KEY);
    currParameters.getChild(COMPONENT_LOCATION_KEY).getValue(COMPONENT_PARAMETERS_VALUE));

代码示例来源：origin: org.codehaus.plexus/plexus-ftpd

/**
 * Configure user manager - third step.
 */
public void configure(Configuration config) throws ConfigurationException {
  mConfig = config;
  // get server address
  Configuration tmpConf = mConfig.getChild("allow-ip", false);
  mbAllowIp = false;
  if(tmpConf != null) {
    mbAllowIp = tmpConf.getValueAsBoolean(mbAllowIp);
  }
  mBaseDirectory = config.getChild("base-directory").getValue(null);
  if(mBaseDirectory == null)
    throw new ConfigurationException("Missing configuration element 'base-directory'");
}

代码示例来源：origin: org.apache.cocoon/cocoon-sitemap-impl

/**
 * Configures the database access helper.
 *
 * Takes all elements nested in component declaration and stores
 * them as key-value pairs in <code>settings</code>. Nested
 * configuration option are not catered for. This way global
 * configuration options can be used.
 *
 * For nested configurations override this function.
 * */
public void configure(Configuration conf) throws ConfigurationException {
  Configuration[] parameters = conf.getChildren();
  this.settings = new HashMap(parameters.length);
  for (int i = 0; i < parameters.length; i++) {
    String key = parameters[i].getName();
    String val = parameters[i].getValue("");
    this.settings.put (key, val);
  }
}

代码示例来源：origin: org.apache.fulcrum/fulcrum-yaafi

/**
 * @see org.apache.avalon.framework.configuration.Configurable#configure(org.apache.avalon.framework.configuration.Configuration)
 */
public void configure(Configuration configuration) throws ConfigurationException {
  Configuration[] interceptorConfigList = configuration.getChild("interceptors").getChildren("interceptor");
  this.defaultInterceptorList = new String[interceptorConfigList.length];
  for (int i = 0; i < interceptorConfigList.length; i++) {
    this.defaultInterceptorList[i] = interceptorConfigList[i].getValue();
  }
}

代码示例来源：origin: org.apache.fulcrum/fulcrum-yaafi

/**
 * @see org.apache.avalon.framework.configuration.Configurable#configure(org.apache.avalon.framework.configuration.Configuration)
 */
public void configure(Configuration configuration) throws ConfigurationException {
  // limit to minimum interval of 1 second
  this.interval = Math.max(configuration.getAttributeAsInteger("interval", 5000), 1000);
  this.getLogger().debug("Monitoring the resources every " + this.interval + " ms");
  if (configuration.getChild("entry", false) != null) {
    Configuration shutdownConfig = configuration.getChild("entry");
    String shutdownEntryLocation = shutdownConfig.getChild("location").getValue();
    this.shutdownEntry = new ShutdownEntry(this.getLogger(), this.applicationDir, shutdownEntryLocation,
        shutdownConfig.getChild("useSystemExit").getValueAsBoolean(false));
    this.getLogger().debug("Using a shutdown entry : " + shutdownEntryLocation);
  } else {
    this.shutdownEntry = null;
    this.getLogger().debug("No shutdown entry defined");
  }
}

代码示例来源：origin: com.cloudhopper.proxool/proxool

/**
 * Check that all top level elements are named proxool and hand them to
 * {@link XMLConfigurator}.
 * @param configuration the configuration handed over by the Avalon Framework.
 * @throws ConfigurationException if the configuration fails.
 */
public void configure(Configuration configuration) throws ConfigurationException {
  final XMLConfigurator xmlConfigurator = new XMLConfigurator();
  this.closeOnDispose = configuration.getAttributeAsBoolean(CLOSE_ON_DISPOSE_ATTRIBUTE, true);
  final Configuration[] children = configuration.getChildren();
  for (int i = 0; i < children.length; ++i) {
    if (!children[i].getName().equals(ProxoolConstants.PROXOOL)) {
      throw new ConfigurationException("Found element named " + children[i].getName() + ". Only "
          + ProxoolConstants.PROXOOL + " top level elements are alowed.");
    }
  }
  try {
    xmlConfigurator.startDocument();
    reportProperties(xmlConfigurator, configuration.getChildren());
    xmlConfigurator.endDocument();
  } catch (SAXException e) {
    throw new ConfigurationException("", e);
  }
}

代码示例来源：origin: org.apache.avalon.cornerstone.scheduler/cornerstone-scheduler-api

throws ConfigurationException
final String type = conf.getAttribute( "type" );
    conf.getChild( "offset", true ).getValueAsInteger( 0 );
  final int period =
    conf.getChild( "period", true ).getValueAsInteger( -1 );
    conf.getChild( "minute" ).getValueAsInteger( -1 );
  final int hour =
    conf.getChild( "hour" ).getValueAsInteger( -1 );
  final int day =
    conf.getChild( "day" ).getValueAsInteger( -1 );
  final int month =
    conf.getChild( "month" ).getValueAsInteger( -1 );
  final int year =
    conf.getChild( "year" ).getValueAsInteger( -1 );
  final boolean dayOfWeek =
    conf.getChild( "day" ).getAttributeAsBoolean( "week", false );
  throw new ConfigurationException( "Unknown trigger type" );

代码示例来源：origin: org.apache.cocoon/cocoon-sitemap-impl

/**
 * Configure the tree processor:
 * &lt;processor file="{Location of the sitemap}"
 *               check-reload="{true|false}"
 *               config="{Location of sitemap tree processor config}&gt;
 *   &lt;reload delay="10"/&gt;
 * &lt;/processor&gt;
 *
 * Only the file attribute is required; everything else is optional.
 *
 * @see org.apache.avalon.framework.configuration.Configurable#configure(org.apache.avalon.framework.configuration.Configuration)
 */
public void configure(Configuration config)
throws ConfigurationException {
  this.checkReload = config.getAttributeAsBoolean("check-reload",
             this.settings.isReloadingEnabled("sitemap"));
  // Reload check delay. Default is 1 second.
  this.lastModifiedDelay = config.getChild("reload").getAttributeAsLong("delay", this.settings.getReloadDelay("sitemap"));
  String fileName = config.getAttribute("file", "sitemap.xmap");
  
  try {
    this.source = new DelayedRefreshSourceWrapper(this.resolver.resolveURI(fileName), lastModifiedDelay);
  } catch (Exception e) {
    throw new ConfigurationException("Cannot resolve " + fileName, e);
  }
}

代码示例来源：origin: org.apache.excalibur.containerkit/excalibur-logger

final Configuration configChild = conf.getChild( "address", false );
if( null == configChild )
  throw new ConfigurationException( "target address not specified in the config" );
  address = InetAddress.getByName( configChild.getAttribute( "hostname" ) );
  throw new ConfigurationException( "Host specified in datagram target adress is unknown!", uhex );
int port = configChild.getAttributeAsInteger( "port" );
final Formatter formatter = getFormatter( conf.getChild( "format", false ) );
  throw new ConfigurationException( "Failed to create target!", ioex );

代码示例来源：origin: org.apache.cocoon/cocoon-core

/**
 * Configure the component.
 *
 * @param configuration the configuration
 */
public void configure(Configuration configuration) throws ConfigurationException {
  this.directory = configuration.getChild(ConfigurationKeys.ROOT_DIRECTORY).getValue("");
  String cacheRole = configuration.getChild(ConfigurationKeys.STORE_ROLE).getValue(Store.TRANSIENT_STORE);
  try {
    this.cache = (Store) this.manager.lookup(cacheRole);
  } catch (ServiceException e) {
    throw new ConfigurationException("Unable to lookup store '" + cacheRole + "'");
  }
  this.interval = configuration.getChild(ConfigurationKeys.RELOAD_INTERVAL).getValueAsLong(60000L);
  if (getLogger().isDebugEnabled()) {
    getLogger().debug("Bundle directory '" + this.directory + "'");
    getLogger().debug("Store role '" + cacheRole + "'");
  }
}

代码示例来源：origin: org.apache.cocoon/cocoon-sitemap-impl

/**
 * The category name is the value of the "category-name" child, or if not
 * present, the name of the configuration element.
 */
public void configure(Configuration config) throws ConfigurationException {
  super.configure(config);
  this.name = config.getChild("category-name").getValue(config.getAttribute("name"));
}

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