Package liquibase.configuration.core

Class EnvironmentValueProvider

java.lang.Object

liquibase.configuration.AbstractConfigurationValueProvider

liquibase.configuration.AbstractMapConfigurationValueProvider

liquibase.configuration.core.EnvironmentValueProvider

All Implemented Interfaces:

ConfigurationValueProvider

public class EnvironmentValueProvider
extends AbstractMapConfigurationValueProvider

Searches for the configuration values in the system environment variables.

To handle shells that only allow underscores, it checks the following variations of a property:

• foo.bar - the original name
• foo_bar - with underscores for periods (if any)
• FOO.BAR - original, with upper case
• FOO_BAR - with underscores and upper case

Any hyphen variant of the above would work as well, or even mix dot/hyphen variants.

Constructor Summary

Constructors

Constructor	Description
EnvironmentValueProvider()

Method Summary

Modifier and Type	Method	Description
protected Map<?,?>	getMap()
int	getPrecedence()	Returns the precedence of values returned by this provider.
protected String	getSourceDescription()
protected boolean	keyMatches(String wantedKey, String storedKey)	Used by ConfigurationValueProvider.getProvidedValue(String[]) to determine of a given map entry matches the wanted key.
void	validate(CommandScope commandScope)	Default implementation does no checking

Methods inherited from class liquibase.configuration.AbstractMapConfigurationValueProvider

getDescription, getMapHash, getProvidedValue, isValueSet, lookupProvidedValue

Methods inherited from class java.lang.Object

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

Constructor Details

EnvironmentValueProvider

public EnvironmentValueProvider()

Method Details

getPrecedence

public int getPrecedence()

Description copied from interface: ConfigurationValueProvider

Returns the precedence of values returned by this provider. Higher a provider with higher precedence overrides values from lower precedence providers.

Standard provider precedence:

• 400 ScopeValueProvider
• 350 DeprecatedConfigurationValueProvider
• 250 Integration specific providers
• 300: TODO JNDI attributes
• 250: TODO Servlet Context
• 200 SystemPropertyValueProvider
• 150 EnvironmentValueProvider
• 100: TODO profile/context specific properties files
• 50: DefaultsFileValueProvider

getMap

protected Map<?,?> getMap()

Specified by:

getMap in class AbstractMapConfigurationValueProvider

validate

public void validate(CommandScope commandScope)
              throws IllegalArgumentException

Description copied from class: AbstractConfigurationValueProvider

Default implementation does no checking

Specified by:

validate in interface ConfigurationValueProvider

Overrides:

validate in class AbstractConfigurationValueProvider

Throws:

IllegalArgumentException

getSourceDescription

protected String getSourceDescription()

Specified by:

getSourceDescription in class AbstractMapConfigurationValueProvider

keyMatches

protected boolean keyMatches(String wantedKey,
 String storedKey)

Description copied from class: AbstractMapConfigurationValueProvider

Used by ConfigurationValueProvider.getProvidedValue(String[]) to determine of a given map entry matches the wanted key. This implementation compares the values case-insensitively, and will replace camelCase words with kabob-case

Overrides:

keyMatches in class AbstractMapConfigurationValueProvider

Parameters:

wantedKey - the configuration key requested

storedKey - the key stored in the map