org.springframework.web.servlet.mvc.condition

Class CompositeRequestCondition

java.lang.Object

org.springframework.web.servlet.mvc.condition.AbstractRequestCondition<CompositeRequestCondition>

org.springframework.web.servlet.mvc.condition.CompositeRequestCondition

All Implemented Interfaces:

RequestCondition<CompositeRequestCondition>

public class CompositeRequestCondition
extends AbstractRequestCondition<CompositeRequestCondition>

Implements the RequestCondition contract by delegating to multiple RequestCondition types and using a logical conjunction (' && ') to ensure all conditions match a given request.

When CompositeRequestCondition instances are combined or compared they are expected to (a) contain the same number of conditions and (b) that conditions in the respective index are of the same type. It is acceptable to provide null conditions or no conditions at all to the constructor.

Since:

3.2

Author:

Rossen Stoyanchev

Constructor Summary

Constructors

Constructor and Description
CompositeRequestCondition(RequestCondition<?>... requestConditions) Create an instance with 0 or more RequestCondition types.

Method Summary

Modifier and Type	Method and Description
CompositeRequestCondition	combine(CompositeRequestCondition other) If one instance is empty, return the other.
int	compareTo(CompositeRequestCondition other, HttpServletRequest request) If one instance is empty, the other "wins".
List<RequestCondition<?>>	getConditions() Return the underlying conditions, possibly empty but never null.
protected Collection<?>	getContent() Return the discrete items a request condition is composed of.
CompositeRequestCondition	getMatchingCondition(HttpServletRequest request) Delegate to all contained conditions to match the request and return the resulting "matching" condition instances.
protected String	getToStringInfix() The notation to use when printing discrete items of content.
boolean	isEmpty() Whether this instance contains 0 conditions or not.

Methods inherited from class org.springframework.web.servlet.mvc.condition.AbstractRequestCondition

equals, hashCode, toString

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

CompositeRequestCondition

public CompositeRequestCondition(RequestCondition<?>... requestConditions)

Create an instance with 0 or more RequestCondition types. It is important to create CompositeRequestCondition instances with the same number of conditions so they may be compared and combined. It is acceptable to provide null conditions.

Method Detail

isEmpty

public boolean isEmpty()

Whether this instance contains 0 conditions or not.

Overrides:

isEmpty in class AbstractRequestCondition<CompositeRequestCondition>

Returns:

true if empty; false otherwise

getConditions

public List<RequestCondition<?>> getConditions()

Return the underlying conditions, possibly empty but never null.

getContent

protected Collection<?> getContent()

Description copied from class: AbstractRequestCondition

Return the discrete items a request condition is composed of.

For example URL patterns, HTTP request methods, param expressions, etc.

Specified by:

getContent in class AbstractRequestCondition<CompositeRequestCondition>

Returns:

a collection of objects, never null

getToStringInfix

protected String getToStringInfix()

Description copied from class: AbstractRequestCondition

The notation to use when printing discrete items of content.

For example " || " for URL patterns or " && " for param expressions.

Specified by:

getToStringInfix in class AbstractRequestCondition<CompositeRequestCondition>

combine

public CompositeRequestCondition combine(CompositeRequestCondition other)

If one instance is empty, return the other. If both instances have conditions, combine the individual conditions after ensuring they are of the same type and number.

Parameters:

other - the condition to combine with.

Returns:

a request condition instance that is the result of combining the two condition instances.

getMatchingCondition

public CompositeRequestCondition getMatchingCondition(HttpServletRequest request)

Delegate to all contained conditions to match the request and return the resulting "matching" condition instances.

An empty CompositeRequestCondition matches to all requests.

Returns:

a condition instance in case of a match; or null if there is no match

compareTo

public int compareTo(CompositeRequestCondition other,
                     HttpServletRequest request)

If one instance is empty, the other "wins". If both instances have conditions, compare them in the order in which they were provided.