discoverability work

Eugen · Eugen · commit 8b409e07a601 · 2013-05-27T18:30:54.000+03:00
diff --git a/spring-security-rest/src/main/java/org/baeldung/web/controller/ResourceCreated.java b/spring-security-rest/src/main/java/org/baeldung/web/controller/ResourceCreated.java
@@ -8,14 +8,14 @@
 public class ResourceCreated extends ApplicationEvent {
     private final HttpServletResponse response;
     private final HttpServletRequest request;
-    private final long idOfCreatedResource;
+    private final long idOfNewResource;
 
-    public ResourceCreated(final Object source, final HttpServletRequest request, final HttpServletResponse response, final long idOfCreatedResource) {
+    public ResourceCreated(final Object source, final HttpServletRequest request, final HttpServletResponse response, final long idOfNewResource) {
         super(source);
 
         this.request = request;
         this.response = response;
-        this.idOfCreatedResource = idOfCreatedResource;
+        this.idOfNewResource = idOfNewResource;
     }
 
     // API
@@ -28,8 +28,8 @@ public HttpServletRequest getRequest() {
         return request;
     }
 
-    public long getIdOfCreatedResource() {
-        return idOfCreatedResource;
+    public long getIdOfNewResource() {
+        return idOfNewResource;
     }
 
 }
diff --git a/spring-security-rest/src/main/java/org/baeldung/web/controller/ResourceCreatedDiscoverabilityListener.java b/spring-security-rest/src/main/java/org/baeldung/web/controller/ResourceCreatedDiscoverabilityListener.java
@@ -0,0 +1,35 @@
+package org.baeldung.web.controller;
+
+import java.net.URI;
+
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+
+import org.springframework.context.ApplicationListener;
+import org.springframework.stereotype.Component;
+import org.springframework.web.util.UriTemplate;
+
+import com.google.common.base.Preconditions;
+import com.google.common.net.HttpHeaders;
+
+@Component
+class ResourceCreatedDiscoverabilityListener implements ApplicationListener<ResourceCreated> {
+
+    @Override
+    public void onApplicationEvent(final ResourceCreated resourceCreatedEvent) {
+        Preconditions.checkNotNull(resourceCreatedEvent);
+
+        final HttpServletRequest request = resourceCreatedEvent.getRequest();
+        final HttpServletResponse response = resourceCreatedEvent.getResponse();
+        final long idOfNewResource = resourceCreatedEvent.getIdOfNewResource();
+
+        addLinkHeaderOnResourceCreation(request, response, idOfNewResource);
+    }
+
+    void addLinkHeaderOnResourceCreation(final HttpServletRequest request, final HttpServletResponse response, final long idOfNewResource) {
+        final String requestUrl = request.getRequestURL().toString();
+        final URI uri = new UriTemplate("{requestUrl}/{idOfNewResource}").expand(requestUrl, idOfNewResource);
+        response.setHeader(HttpHeaders.LOCATION, uri.toASCIIString());
+    }
+
+}
diff --git a/spring-security-rest/src/main/java/org/baeldung/web/controller/SingleResourceRetrievedDiscoverabilityListener.java b/spring-security-rest/src/main/java/org/baeldung/web/controller/SingleResourceRetrievedDiscoverabilityListener.java
@@ -0,0 +1,32 @@
+package org.baeldung.web.controller;
+
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+
+import org.springframework.context.ApplicationListener;
+import org.springframework.stereotype.Component;
+
+import com.google.common.base.Preconditions;
+
+@Component
+class SingleResourceRetrievedDiscoverabilityListener implements ApplicationListener<SingleResourceRetrieved> {
+
+    @Override
+    public void onApplicationEvent(final SingleResourceRetrieved resourceRetrievedEvent) {
+        Preconditions.checkNotNull(resourceRetrievedEvent);
+
+        final HttpServletRequest request = resourceRetrievedEvent.getRequest();
+        final HttpServletResponse response = resourceRetrievedEvent.getResponse();
+        addLinkHeaderOnSingleResourceRetrieval(request, response);
+    }
+
+    void addLinkHeaderOnSingleResourceRetrieval(final HttpServletRequest request, final HttpServletResponse response) {
+        final StringBuffer requestURL = request.getRequestURL();
+        final int positionOfLastSlash = requestURL.lastIndexOf("/");
+        final String uriForResourceCreation = requestURL.substring(0, positionOfLastSlash);
+
+        // final String linkHeaderValue = RESTURLUtil.createLinkHeader(uriForResourceCreation, "collection");
+        // response.addHeader(LINK_HEADER, linkHeaderValue);
+    }
+
+}

Original file line number	Diff line number	Diff line change
`@@ -8,14 +8,14 @@`
`8`	`8`	`public class ResourceCreated extends ApplicationEvent {`
`9`	`9`	`private final HttpServletResponse response;`
`10`	`10`	`private final HttpServletRequest request;`
`11`		`- private final long idOfCreatedResource;`
	`11`	`+ private final long idOfNewResource;`
`12`	`12`
`13`		`- public ResourceCreated(final Object source, final HttpServletRequest request, final HttpServletResponse response, final long idOfCreatedResource) {`
	`13`	`+ public ResourceCreated(final Object source, final HttpServletRequest request, final HttpServletResponse response, final long idOfNewResource) {`
`14`	`14`	`super(source);`
`15`	`15`
`16`	`16`	`this.request = request;`
`17`	`17`	`this.response = response;`
`18`		`- this.idOfCreatedResource = idOfCreatedResource;`
	`18`	`+ this.idOfNewResource = idOfNewResource;`
`19`	`19`	`}`
`20`	`20`
`21`	`21`	`// API`
`@@ -28,8 +28,8 @@ public HttpServletRequest getRequest() {`
`28`	`28`	`return request;`
`29`	`29`	`}`
`30`	`30`
`31`		`- public long getIdOfCreatedResource() {`
`32`		`- return idOfCreatedResource;`
	`31`	`+ public long getIdOfNewResource() {`
	`32`	`+ return idOfNewResource;`
`33`	`33`	`}`
`34`	`34`
`35`	`35`	`}`