Package com.tangosol.coherence.config

Interface EnvironmentVariableResolver

All Known Implementing Classes:

ConfigPropertyResolver, EnvironmentVariableResolver.Default

public interface EnvironmentVariableResolver

An abstraction that allows us to make environment variable resolution customizable.

Author:

as 2019.10.11

Nested Class Summary

Nested Classes

Modifier and Type	Interface	Description
static class	EnvironmentVariableResolver.Default	Default EnvironmentVariableResolver implementation.

Method Summary

Modifier and Type	Method	Description
String	getEnv(String sVarName)	Return the value of the specified environment variable.
default String	getEnv(String sVarName, String sDefaultValue)	Return the value of the specified environment variable, or the specified default value if the variable doesn't exist.
static EnvironmentVariableResolver	getInstance()	Return an instance of a EnvironmentVariableResolver discovered by the ServiceLoader, or a default instance if none are discovered.

Method Details

getEnv

String getEnv(String sVarName)

Return the value of the specified environment variable.

Parameters:

sVarName - the name of the environment variable to return

Returns:

the value of the specified environment variable

getEnv

default String getEnv(String sVarName,
 String sDefaultValue)

Return the value of the specified environment variable, or the specified default value if the variable doesn't exist.

Parameters:

sVarName - the name of the environment variable to return

sDefaultValue - the default value to return if the variable doesn't exist

Returns:

the value of the specified environment variable, or the specified default value if the variable doesn't exist

getInstance

static EnvironmentVariableResolver getInstance()

Return an instance of a EnvironmentVariableResolver discovered by the ServiceLoader, or a default instance if none are discovered.

Returns:

an instance of a EnvironmentVariableResolver