本文整理匯總了Java中org.apache.hadoop.conf.Configuration.iterator方法的典型用法代碼示例。如果您正苦於以下問題：Java Configuration.iterator方法的具體用法？Java Configuration.iterator怎麽用？Java Configuration.iterator使用的例子？那麽, 這裏精選的方法代碼示例或許可以為您提供幫助。您也可以進一步了解該方法所在類org.apache.hadoop.conf.Configuration的用法示例。
在下文中一共展示了Configuration.iterator方法的1個代碼示例，這些例子默認根據受歡迎程度排序。您可以為喜歡或者感覺有用的代碼點讚，您的評價將有助於係統推薦出更棒的Java代碼示例。
示例1: if
import org.apache.hadoop.conf.Configuration; //導入方法依賴的package包/類
/**
* Pull properties and values from filename.
*
* @param filename XML filename
* @return HashMap containing <Property,Value> entries from XML file
*/
private HashMap<String,String> extractPropertiesFromXml
(String filename) {
if (filename==null) {
return null;
}
// Iterate through XML file for name/value pairs
Configuration conf = new Configuration(false);
conf.setAllowNullValueProperties(true);
conf.addResource(filename);
HashMap<String,String> retVal = new HashMap<String,String>();
Iterator<Map.Entry<String,String>> kvItr = conf.iterator();
while (kvItr.hasNext()) {
Map.Entry<String,String> entry = kvItr.next();
String key = entry.getKey();
// Ignore known xml props
if (xmlPropsToSkipCompare != null) {
if (xmlPropsToSkipCompare.contains(key)) {
continue;
}
}
// Ignore known xml prefixes
boolean skipPrefix = false;
if (xmlPrefixToSkipCompare != null) {
for (String xmlPrefix : xmlPrefixToSkipCompare) {
if (key.startsWith(xmlPrefix)) {
skipPrefix = true;
break;
}
}
}
if (skipPrefix) {
continue;
}
if (conf.onlyKeyExists(key)) {
retVal.put(key,null);
} else {
String value = conf.get(key);
if (value!=null) {
retVal.put(key,entry.getValue());
}
}
kvItr.remove();
}
return retVal;
}