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#851 - Handle paging when rendering list of issues.

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This commit is contained in:
Greg Turnquist
2019-03-04 12:17:05 -06:00
parent b608bb0175
commit 6200da5dd0
1 changed files with 42 additions and 5 deletions
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47
src/test/java/org/springframework/hateoas/support/ChangelogCreator.java
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@@ -15,9 +15,15 @@
*/
package org.springframework.hateoas.support;
import java.util.Arrays;
import java.util.Iterator;
import java.util.stream.Collectors;
import net.minidev.json.JSONArray;
import org.springframework.hateoas.IanaLinkRelations;
import org.springframework.hateoas.Link;
import org.springframework.hateoas.Links;
import org.springframework.http.HttpEntity;
import org.springframework.web.client.RestTemplate;
import com.jayway.jsonpath.JsonPath;
@@ -26,24 +32,55 @@ import com.jayway.jsonpath.JsonPath;
* Little helper to build a changelog from the tickets of a particular milestone.
*
* @author Oliver Gierke
* @author Greg Turnquist
*/
class ChangelogCreator {
private static final int MILESTONE_ID = 23;
private static final int MILESTONE_ID = 25;
private static final String URI_TEMPLATE = "https://api.github.com/repos/spring-projects/spring-hateoas/issues?milestone={id}&state=closed";
public static void main(String... args) {
RestTemplate template = new RestTemplate();
String response = template.getForObject(URI_TEMPLATE, String.class, MILESTONE_ID);
HttpEntity<String> response = template.getForEntity(URI_TEMPLATE, String.class, MILESTONE_ID);
boolean keepChecking = true;
boolean printHeader = true;
while (keepChecking) {
readPage(response.getBody(), printHeader);
printHeader = false;
String linkHeader = response.getHeaders().get("Link").get(0);
Links links = Arrays.stream(linkHeader.split(", ")) //
.map(Link::valueOf) //
.collect(Collectors.collectingAndThen(Collectors.toList(), Links::of));
if (links.getLink(IanaLinkRelations.NEXT).isPresent()) {
response = template.getForEntity(links.getRequiredLink(IanaLinkRelations.NEXT).expand().getHref(),
String.class);
} else {
keepChecking = false;
}
}
}
private static void readPage(String content, boolean header) {
JsonPath titlePath = JsonPath.compile("$[*].title");
JsonPath idPath = JsonPath.compile("$[*].number");
JSONArray titles = titlePath.read(response);
Iterator<Object> ids = ((JSONArray) idPath.read(response)).iterator();
JSONArray titles = titlePath.read(content);
Iterator<Object> ids = ((JSONArray) idPath.read(content)).iterator();
System.out.println("Milestone - " + JsonPath.read(response, "$[1].milestone.title"));
if (header) {
System.out.println("Milestone - " + JsonPath.read(content, "$[1].milestone.title"));
}
for (Object title : titles) {