Package elf4j.engine.service.util

Class PropertiesUtils

java.lang.Object

elf4j.engine.service.util.PropertiesUtils

public class PropertiesUtils
extends Object

Method Summary

Modifier and Type	Method	Description
static Integer	getAsInteger(String name, @NonNull Properties properties)	Takes only digits from the value to form a sequence, and tries to parse the sequence as an Integer
static Map<String,String>	getChildProperties(String prefix, @NonNull Properties properties)
static int	getIntOrDefault(String name, @NonNull Properties properties, int defaultValue)
static List<Map<String,String>>	getPropertiesGroupOfType(String type, @NonNull Properties properties)

Methods inherited from class java.lang.Object

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

Method Detail

getChildProperties

public static Map<String,String> getChildProperties(String prefix,
                                                          @NonNull
                                                          @NonNull Properties properties)

Parameters:

prefix - key prefix to search for

properties - search source

Returns:

all properties entries whose original keys start with the specified prefix. The prefix is removed from the keys of the returned entries.

getPropertiesGroupOfType

public static List<Map<String,String>> getPropertiesGroupOfType(String type,
                                                                      @NonNull
                                                                      @NonNull Properties properties)

Parameters:

type - the properties value whose keys are each used as a parent key prefix

properties - search source

Returns:

a group whose every member is a set of properties entries having a common key prefix of the specified type

getAsInteger

@Nullable
public static Integer getAsInteger(String name,
                                   @NonNull
                                   @NonNull Properties properties)

Takes only digits from the value to form a sequence, and tries to parse the sequence as an Integer

Parameters:

name - full key in properties

properties - to look up in

Returns:

Integer value of the specified name in the given properties, null if named entry missing or the corresponding value contains no digit

getIntOrDefault

public static int getIntOrDefault(String name,
                                  @NonNull
                                  @NonNull Properties properties,
                                  int defaultValue)

Parameters:

name - full key in properties

properties - to look up in

defaultValue - the default value to return if the delegate method getAsInteger(java.lang.String, java.util.Properties) returns null

Returns:

result of the delegate method getAsInteger(java.lang.String, java.util.Properties) or, if that is null, the specified defaultValue