Package io.helidon.microprofile.config

Class MpConfig

java.lang.Object

io.helidon.microprofile.config.MpConfig

All Implemented Interfaces:

Config

public final class MpConfig
extends Object
implements Config

Microprofile config wrapper of Config.

Method Summary

Modifier and Type	Method and Description
<T> List<T>	asList(String propertyName, Class<T> typeArg) Return value as a List of values.
Map<String,String>	asMap() Get all properties of this config as a map.
<T> Set<T>	asSet(String propertyName, Class<T> typeArg) Return value as a Set of values.
static MpConfigBuilder	builder() Get a builder for config instances.
<T> T	convert(Class<T> type, String value) Try to coerce the value to the specific type.
Iterable<ConfigSource>	getConfigSources()
<T> Optional<T>	getOptionalValue(String propertyName, Class<T> propertyType)
Iterable<String>	getPropertyNames()
<T> T	getValue(String propertyName, Class<T> propertyType)
boolean	hasConverter(Class<?> clazz) Check whether a converter exists for a specific class.
Config	helidonConfig() Get an instance of Helidon config (a tree structure) rather than the microprofile config.
String	toString()
<T> T	value(String propertyName, Class<T> propertyType, T defaultValue) Get value with a default if it does not exist.
<T> T	valueWithDefault(String propertyName, Class<T> propertyType, String defaultValue) Get value with a default if it does not exist.

Methods inherited from class java.lang.Object

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

Method Detail

builder

public static MpConfigBuilder builder()

Get a builder for config instances.

Returns:

a new builder

getValue

public <T> T getValue(String propertyName,
                      Class<T> propertyType)

Specified by:

getValue in interface Config

asSet

public <T> Set<T> asSet(String propertyName,
                        Class<T> typeArg)

Return value as a Set of values.

Type Parameters:

T - type of elements

Parameters:

propertyName - name of property

typeArg - type of elements in the set

Returns:

set with elements found in properties

asList

public <T> List<T> asList(String propertyName,
                          Class<T> typeArg)

Return value as a List of values.

Type Parameters:

T - type of elements

Parameters:

propertyName - name of property

typeArg - type of elements in the list

Returns:

list with elements found in properties

value

public <T> T value(String propertyName,
                   Class<T> propertyType,
                   T defaultValue)

Get value with a default if it does not exist.

Type Parameters:

T - type of the property

Parameters:

propertyName - name of the property

propertyType - type of the property

defaultValue - default value correctly typed

Returns:

value from configuration or default value if not available

valueWithDefault

public <T> T valueWithDefault(String propertyName,
                              Class<T> propertyType,
                              String defaultValue)

Get value with a default if it does not exist.

Type Parameters:

T - type of the property

Parameters:

propertyName - name of the property

propertyType - type of the property

defaultValue - default value as String

Returns:

value from configuration or default value coerced to correct type if not available

getOptionalValue

public <T> Optional<T> getOptionalValue(String propertyName,
                                        Class<T> propertyType)

Specified by:

getOptionalValue in interface Config

getPropertyNames

public Iterable<String> getPropertyNames()

Specified by:

getPropertyNames in interface Config

getConfigSources

public Iterable<ConfigSource> getConfigSources()

Specified by:

getConfigSources in interface Config

hasConverter

public boolean hasConverter(Class<?> clazz)

Check whether a converter exists for a specific class.

Parameters:

clazz - class to convert to

Returns:

true if a converter exists for the specified class

convert

public <T> T convert(Class<T> type,
                     String value)

Try to coerce the value to the specific type.

Type Parameters:

T - type we expect (e.g. String, Integer or a java bean)

Parameters:

type - type to return

value - string value to parse

Returns:

null if value is null, transformed object otherwise

Throws:

IllegalArgumentException - if the value cannot be converted to the specified type using.

helidonConfig

public Config helidonConfig()

Get an instance of Helidon config (a tree structure) rather than the microprofile config.

Returns:

config instance that has the same properties as this instance

asMap

public Map<String,String> asMap()

Get all properties of this config as a map.

Returns:

map where keys are configuration keys and values are associated string values

toString

public String toString()

Overrides:

toString in class Object