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Polish

This commit is contained in:
Rossen Stoyanchev 2017-11-01 09:21:21 -04:00
parent 64bc9b4311
commit b35b50bef1
2 changed files with 30 additions and 24 deletions
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36
spring-messaging/src/main/java/org/springframework/messaging/handler/AbstractMessageCondition.java
View File

@ -22,13 +22,30 @@ import java.util.Iterator;
import org.springframework.lang.Nullable; import org.springframework.lang.Nullable;
/** /**
* A base class for {@link MessageCondition} types providing implementations of * Base class for {@code MessageCondition's} that pre-declares abstract methods
* {@link #equals(Object)}, {@link #hashCode()}, and {@link #toString()}. * {@link #getContent()} and {@link #getToStringInfix()} in order to provide
* implementations of {@link #equals(Object)}, {@link #hashCode()}, and
* {@link #toString()}.
* *
* @author Rossen Stoyanchev * @author Rossen Stoyanchev
* @since 4.0 * @since 4.0
*/ */
public abstract class AbstractMessageCondition<T extends AbstractMessageCondition<T>> implements MessageCondition<T> { public abstract class AbstractMessageCondition<T extends AbstractMessageCondition<T>>
implements MessageCondition<T> {
/**
* Return the collection of objects the message condition is composed of
* (e.g. destination patterns), never {@code null}.
*/
protected abstract Collection<?> getContent();
/**
* The notation to use when printing discrete items of content.
* For example " || " for URL patterns or " && " for param expressions.
*/
protected abstract String getToStringInfix();
@Override @Override
public boolean equals(@Nullable Object obj) { public boolean equals(@Nullable Object obj) {
@ -61,17 +78,4 @@ public abstract class AbstractMessageCondition<T extends AbstractMessageConditio
return builder.toString(); return builder.toString();
} }
/**
* Return the collection of objects the message condition is composed of
* (e.g. destination patterns), never {@code null}.
*/
protected abstract Collection<?> getContent();
/**
* The notation to use when printing discrete items of content.
* For example " || " for URL patterns or " && " for param expressions.
*/
protected abstract String getToStringInfix();
} }

18
spring-messaging/src/main/java/org/springframework/messaging/simp/SimpMessageTypeMessageCondition.java
View File

@ -16,8 +16,9 @@
package org.springframework.messaging.simp; package org.springframework.messaging.simp;
import java.util.Arrays;
import java.util.Collection; import java.util.Collection;
import java.util.Collections;
import java.util.Map;
import org.springframework.lang.Nullable; import org.springframework.lang.Nullable;
import org.springframework.messaging.Message; import org.springframework.messaging.Message;
@ -25,7 +26,8 @@ import org.springframework.messaging.handler.AbstractMessageCondition;
import org.springframework.util.Assert; import org.springframework.util.Assert;
/** /**
* A message condition that checks the message type. * {@code MessageCondition} that matches by the message type obtained via
* {@link SimpMessageHeaderAccessor#getMessageType(Map)}.
* *
* @author Rossen Stoyanchev * @author Rossen Stoyanchev
* @since 4.0 * @since 4.0
@ -58,7 +60,7 @@ public class SimpMessageTypeMessageCondition extends AbstractMessageCondition<Si
@Override @Override
protected Collection<?> getContent() { protected Collection<?> getContent() {
return Arrays.asList(this.messageType); return Collections.singletonList(this.messageType);
} }
@Override @Override
@ -80,15 +82,15 @@ public class SimpMessageTypeMessageCondition extends AbstractMessageCondition<Si
@Override @Override
public int compareTo(SimpMessageTypeMessageCondition other, Message<?> message) { public int compareTo(SimpMessageTypeMessageCondition other, Message<?> message) {
Object actualMessageType = SimpMessageHeaderAccessor.getMessageType(message.getHeaders()); Object actual = SimpMessageHeaderAccessor.getMessageType(message.getHeaders());
if (actualMessageType != null) { if (actual != null) {
if (actualMessageType.equals(this.getMessageType()) && actualMessageType.equals(other.getMessageType())) { if (actual.equals(this.messageType) && actual.equals(other.getMessageType())) {
return 0; return 0;
} }
else if (actualMessageType.equals(this.getMessageType())) { else if (actual.equals(this.messageType)) {
return -1; return -1;
} }
else if (actualMessageType.equals(other.getMessageType())) { else if (actual.equals(other.getMessageType())) {
return 1; return 1;
} }
} }