org.springframework.test.context.support
Class AbstractContextLoader

java.lang.Object
  org.springframework.test.context.support.AbstractContextLoader

All Implemented Interfaces:

ContextLoader

Direct Known Subclasses:

AbstractGenericContextLoader

public abstract class AbstractContextLoader
extends Object
implements ContextLoader

Abstract application context loader, which provides a basis for all concrete implementations of the ContextLoader strategy. Provides a Template Method based approach for processing locations.

Since:

2.5

Author:

Sam Brannen, Juergen Hoeller

See Also:

generateDefaultLocations(Class), modifyLocations(Class,String...)

Constructor Summary

AbstractContextLoader()

Method Summary

protected String[]	generateDefaultLocations(Class<?> clazz) Generates the default classpath resource locations array based on the supplied class.
protected abstract String	getResourceSuffix() Gets the suffix to append to ApplicationContext resource locations when generating default locations.
protected boolean	isGenerateDefaultLocations() Determines whether or not default resource locations should be generated if the locations provided to processLocations() are null or empty.
protected String[]	modifyLocations(Class<?> clazz, String... locations) Generates a modified version of the supplied locations array and returns it.
String[]	processLocations(Class<?> clazz, String... locations) If the supplied locations are null or empty and isGenerateDefaultLocations() is true, default locations will be generated for the specified class and the configured resource suffix; otherwise, the supplied locations will be modified if necessary and returned.

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.springframework.test.context.ContextLoader

loadContext

Constructor Detail

AbstractContextLoader

public AbstractContextLoader()

Method Detail

isGenerateDefaultLocations

protected boolean isGenerateDefaultLocations()

Determines whether or not default resource locations should be generated if the locations provided to processLocations() are null or empty.

Can be overridden by subclasses to change the default behavior.

Returns:

always true by default

getResourceSuffix

protected abstract String getResourceSuffix()

Gets the suffix to append to ApplicationContext resource locations when generating default locations.

Must be implemented by subclasses.

Returns:

the resource suffix; should not be null or empty.

See Also:

generateDefaultLocations(Class)

processLocations

public final String[] processLocations(Class<?> clazz,
                                       String... locations)

If the supplied locations are null or empty and isGenerateDefaultLocations() is true, default locations will be generated for the specified class and the configured resource suffix; otherwise, the supplied locations will be modified if necessary and returned.

Specified by:

processLocations in interface ContextLoader

Parameters:

clazz - the class with which the locations are associated: to be used when generating default locations.

locations - the unmodified locations to use for loading the application context; can be null or empty.

Returns:

an array of application context resource locations

See Also:

generateDefaultLocations(Class), modifyLocations(Class,String...), ContextLoader.processLocations(java.lang.Class, java.lang.String...)

generateDefaultLocations

protected String[] generateDefaultLocations(Class<?> clazz)

Generates the default classpath resource locations array based on the supplied class.

For example, if the supplied class is com.example.MyTest, the generated locations will contain a single string with a value of "classpath:/com/example/MyTest<suffix>", where <suffix> is the value of the resource suffix string.

Subclasses can override this method to implement a different default location generation strategy.

Parameters:

clazz - the class for which the default locations are to be generated

Returns:

an array of default application context resource locations

See Also:

getResourceSuffix()

modifyLocations

protected String[] modifyLocations(Class<?> clazz,
                                   String... locations)

Generates a modified version of the supplied locations array and returns it.

A plain path, e.g. "context.xml", will be treated as a classpath resource from the same package in which the specified class is defined. A path starting with a slash is treated as a fully qualified class path location, e.g.: "/org/springframework/whatever/foo.xml". A path which references a URL (e.g., a path prefixed with classpath:, file:, http:, etc.) will be added to the results unchanged.

Subclasses can override this method to implement a different location modification strategy.

Parameters:

clazz - the class with which the locations are associated

locations - the resource locations to be modified

Returns:

an array of modified application context resource locations