Package org.snakeyaml.engine.v2.constructor

Class StandardConstructor.ConstructEnv

java.lang.Object

org.snakeyaml.engine.v2.constructor.ConstructScalar

org.snakeyaml.engine.v2.constructor.StandardConstructor.ConstructEnv

All Implemented Interfaces:

ConstructNode

Enclosing class:

StandardConstructor

public class StandardConstructor.ConstructEnv
extends ConstructScalar

Construct scalar for format ${VARIABLE} replacing the template with the value from environment.

See Also:

• Variable substitution
• Variable substitution

Field Summary

Fields inherited from class org.snakeyaml.engine.v2.constructor.ConstructScalar

BOOL_VALUES

Constructor Summary

Constructors

Constructor	Description
ConstructEnv()

Method Summary

Modifier and Type	Method	Description
String	apply(String name, String separator, String value, String environment)	Implement the logic for missing and unset variables
Object	construct(Node node)	Construct a Java instance with all the properties injected when it is possible.
String	getEnv(String key)	Get value of the environment variable

Methods inherited from class org.snakeyaml.engine.v2.constructor.ConstructScalar

constructScalar

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.snakeyaml.engine.v2.api.ConstructNode

constructRecursive

Constructor Details

ConstructEnv

public ConstructEnv()

Method Details

construct

public Object construct(Node node)

Description copied from interface: ConstructNode

Construct a Java instance with all the properties injected when it is possible.

Parameters:

node - composed Node

Returns:

a complete Java instance or empty collection instance if it is recursive

apply

public String apply(String name,
 String separator,
 String value,
 String environment)

Implement the logic for missing and unset variables

Parameters:

name - - variable name in the template

separator - - separator in the template, can be :-, -, :?, ?

value - - default value or the error in the template

environment - - the value from environment for the provided variable

Returns:

the value to apply in the template

getEnv

public String getEnv(String key)

Get value of the environment variable

Parameters:

key - - the name of the variable

Returns:

value or null if not set