gemmellr commented on code in PR #979:
URL: https://github.com/apache/activemq/pull/979#discussion_r1108708010
##########
activemq-client/src/main/java/org/apache/activemq/command/ActiveMQTextMessage.java:
##########
@@ -210,4 +210,22 @@ public String toString() {
}
return super.toString();
}
+
+ @SuppressWarnings("unchecked")
+ public boolean isBodyAssignableTo(Class c) throws JMSException {
+ /*
+ *If the message is a TextMessage, ObjectMessage, MapMessage or
BytesMessage
+ * and the message has no body, then the above does not apply and this
method
+ * will return true irrespective of the value of this parameter.
+ */
+ if (getText() == null) {
+ return true;
+ }
+ return c.isAssignableFrom(java.lang.String.class);
+ }
+
+ @SuppressWarnings("unchecked")
+ protected <T> T doGetBody(Class<T> asType) throws JMSException {
+ return getText() != null ? (T) getText() : null;
Review Comment:
Is the simpler "return (T) getText();" not equivalent?
##########
activemq-client/src/main/java/org/apache/activemq/command/ActiveMQMapMessage.java:
##########
@@ -827,4 +839,26 @@ public Map<String, Object> getContentMap() throws
JMSException {
initializeReading();
return map;
}
+
+ @Override
+ @SuppressWarnings("unchecked")
+ public boolean isBodyAssignableTo(Class c) throws JMSException {
+ final Map<String, Object> map = getContentMap();
+ if (map == null || map.isEmpty()) {
Review Comment:
doGetBody doesnt seem to special case the empty map as this does...should
it? (since it special casing saying true while being given any class here)
##########
activemq-client/src/main/java/org/apache/activemq/command/ActiveMQMessage.java:
##########
@@ -795,14 +795,22 @@ public void setJMSDeliveryTime(long deliveryTime) throws
JMSException {
this.deliveryTime = deliveryTime;
}
- @Override
- public <T> T getBody(Class<T> c) throws JMSException {
- throw new UnsupportedOperationException("getBody(Class<T>) is not
supported");
- }
+ @Override
+ public final <T> T getBody(Class<T> asType) throws JMSException {
+ if (isBodyAssignableTo(asType)) {
+ return doGetBody(asType);
+ }
+
+ throw new MessageFormatException("Message body cannot be read as type:
" + asType);
+ }
@Override
public boolean isBodyAssignableTo(Class c) throws JMSException {
- throw new UnsupportedOperationException("isBodyAssignableTo(Class) is
not supported");
+ return true;
Review Comment:
indentation is off (on the method itself...and some others above)
##########
activemq-client/src/main/java/org/apache/activemq/command/ActiveMQTextMessage.java:
##########
@@ -210,4 +210,22 @@ public String toString() {
}
return super.toString();
}
+
+ @SuppressWarnings("unchecked")
+ public boolean isBodyAssignableTo(Class c) throws JMSException {
+ /*
+ *If the message is a TextMessage, ObjectMessage, MapMessage or
BytesMessage
+ * and the message has no body, then the above does not apply and this
method
+ * will return true irrespective of the value of this parameter.
+ */
Review Comment:
Could probably make the comment make more sense by not using the full spec
sentence :)
##########
activemq-client/src/main/java/org/apache/activemq/command/ActiveMQBytesMessage.java:
##########
@@ -956,4 +956,22 @@ protected void doCompress() throws IOException {
}
}
}
+
+ @Override
+ @SuppressWarnings("unchecked")
+ public boolean isBodyAssignableTo(Class c) {
+ return getContent() == null || c.isAssignableFrom(byte[].class);
+ }
+
+ @SuppressWarnings("unchecked")
+ protected <T> T doGetBody(Class<T> asType) {
+ //Make sure the bytes are stored before trying to copy and return
+ if (dataOut != null && getContent() == null) {
+ storeContent();
+ }
+
+ final ByteSequence content = getContent();
+ return content != null ? (T) new ByteSequence(content.getData(),
content.getOffset(),
+ content.getLength()).getData() : null;
Review Comment:
(also if there is somehow any offset/length diff then the returned bytes
would actually be invalid as they dont account for those)
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