/**
* Copy the name-value pairs from the provided Map.
*
* <p>This operation will overwrite any existing values. Use {@link #copyHeadersIfAbsent(Map)} to
* avoid overwriting values.
*/
public void copyHeaders(Map<String, ?> headersToCopy) {
if (headersToCopy != null) {
for (Map.Entry<String, ?> entry : headersToCopy.entrySet()) {
if (!isReadOnly(entry.getKey())) {
setHeader(entry.getKey(), entry.getValue());
}
}
}
}
@Test
public void wrapMessageAndModifyHeaders() {
Map<String, Object> original = new HashMap<>();
original.put("foo", "bar");
original.put("bar", "baz");
GenericMessage<String> message = new GenericMessage<>("p", original);
MessageHeaderAccessor headers = new MessageHeaderAccessor(message);
headers.setHeader("foo", "BAR");
Map<String, Object> actual = headers.toMap();
assertEquals(4, actual.size());
assertNotNull(actual.get(MessageHeaders.ID));
assertNotNull(actual.get(MessageHeaders.TIMESTAMP));
assertEquals("BAR", actual.get("foo"));
assertEquals("baz", actual.get("bar"));
}
public void setErrorChannel(MessageChannel errorChannel) {
setHeader(MessageHeaders.ERROR_CHANNEL, errorChannel);
}
public void setErrorChannelName(String errorChannelName) {
setHeader(MessageHeaders.ERROR_CHANNEL, errorChannelName);
}
public void setReplyChannel(MessageChannel replyChannel) {
setHeader(MessageHeaders.REPLY_CHANNEL, replyChannel);
}
public void setReplyChannelName(String replyChannelName) {
setHeader(MessageHeaders.REPLY_CHANNEL, replyChannelName);
}
public void setContentType(MimeType contentType) {
setHeader(MessageHeaders.CONTENT_TYPE, contentType);
}
/** Remove the value for the given header name. */
public void removeHeader(String headerName) {
if (StringUtils.hasLength(headerName) && !isReadOnly(headerName)) {
setHeader(headerName, null);
}
}
/**
* Set the value for the given header name only if the header name is not already associated with
* a value.
*/
public void setHeaderIfAbsent(String name, Object value) {
if (getHeader(name) == null) {
setHeader(name, value);
}
}