You are viewing a plain text version of this content. The canonical link for it is here.
Posted to commits@sling.apache.org by fm...@apache.org on 2011/12/05 23:17:22 UTC
svn commit: r1210671 -
/sling/trunk/bundles/servlets/get/src/main/java/org/apache/sling/servlets/get/impl/helpers/ResourceTraversor.java
Author: fmeschbe
Date: Mon Dec 5 22:17:22 2011
New Revision: 1210671
URL: http://svn.apache.org/viewvc?rev=1210671&view=rev
Log:
Reformat
Modified:
sling/trunk/bundles/servlets/get/src/main/java/org/apache/sling/servlets/get/impl/helpers/ResourceTraversor.java
Modified: sling/trunk/bundles/servlets/get/src/main/java/org/apache/sling/servlets/get/impl/helpers/ResourceTraversor.java
URL: http://svn.apache.org/viewvc/sling/trunk/bundles/servlets/get/src/main/java/org/apache/sling/servlets/get/impl/helpers/ResourceTraversor.java?rev=1210671&r1=1210670&r2=1210671&view=diff
==============================================================================
--- sling/trunk/bundles/servlets/get/src/main/java/org/apache/sling/servlets/get/impl/helpers/ResourceTraversor.java (original)
+++ sling/trunk/bundles/servlets/get/src/main/java/org/apache/sling/servlets/get/impl/helpers/ResourceTraversor.java Mon Dec 5 22:17:22 2011
@@ -31,172 +31,173 @@ import javax.jcr.RepositoryException;
public class ResourceTraversor {
- private long count;
- private long maxResources;
- private int maxRecursionLevels;
- private JSONObject startObject;
- private String startingPath;
- private LinkedList<Resource> currentQueue;
- private LinkedList<Resource> nextQueue;
- private Resource startResource;
- private JsonResourceWriter jsResourceWriter;
- private boolean tidy;
-
- public ResourceTraversor(int levels, long maxNodes, Resource resource,
- boolean tidy) throws RepositoryException, JSONException {
- this.setMaxNodes(maxNodes);
- this.maxRecursionLevels = levels;
- this.startResource = resource;
- this.tidy = tidy;
- startingPath = resource.getPath();
- jsResourceWriter = new JsonResourceWriter(null);
- currentQueue = new LinkedList<Resource>();
- nextQueue = new LinkedList<Resource>();
- startObject = adapt(resource);
- }
-
- /**
- * Recursive descent from startResource, collecting JSONObjects into startObject.
- * Throws a RecursionTooDeepException if the maximum number of nodes is reached on a
- * "deep" traversal (where "deep" === level greateer than 1).
- *
- * @throws RepositoryException
- * @throws RecursionTooDeepException
- * When the resource has more child nodes then allowed.
- * @throws JSONException
- */
- public void collectResources() throws RepositoryException, RecursionTooDeepException,
- JSONException {
- collectChildren(startResource, 0);
- }
-
- /**
- *
- * @param resource
- * @param currentLevel
- * @throws RecursionTooDeepException
- * @throws JSONException
- * @throws RepositoryException
- */
- private void collectChildren(Resource resource, int currentLevel)
- throws RecursionTooDeepException, JSONException, RepositoryException {
-
- if (maxRecursionLevels == -1 || currentLevel < maxRecursionLevels) {
- final Iterator<Resource> children = ResourceUtil.listChildren(resource);
- while (children.hasNext()) {
- count++;
- Resource res = children.next();
- // SLING-2320: always allow enumeration of one's children;
- // DOS-limitation is for deeper traversals.
- if (count > maxResources && maxRecursionLevels > 1) {
- throw new RecursionTooDeepException(String.valueOf(currentLevel));
+ private long count;
+
+ private long maxResources;
+
+ private int maxRecursionLevels;
+
+ private JSONObject startObject;
+
+ private String startingPath;
+
+ private LinkedList<Resource> currentQueue;
+
+ private LinkedList<Resource> nextQueue;
+
+ private Resource startResource;
+
+ private JsonResourceWriter jsResourceWriter;
+
+ private boolean tidy;
+
+ public ResourceTraversor(int levels, long maxNodes, Resource resource, boolean tidy) throws RepositoryException,
+ JSONException {
+ this.setMaxNodes(maxNodes);
+ this.maxRecursionLevels = levels;
+ this.startResource = resource;
+ this.tidy = tidy;
+ startingPath = resource.getPath();
+ jsResourceWriter = new JsonResourceWriter(null);
+ currentQueue = new LinkedList<Resource>();
+ nextQueue = new LinkedList<Resource>();
+ startObject = adapt(resource);
+ }
+
+ /**
+ * Recursive descent from startResource, collecting JSONObjects into
+ * startObject. Throws a RecursionTooDeepException if the maximum number of
+ * nodes is reached on a "deep" traversal (where "deep" === level greateer
+ * than 1).
+ *
+ * @throws RepositoryException
+ * @throws RecursionTooDeepException When the resource has more child nodes
+ * then allowed.
+ * @throws JSONException
+ */
+ public void collectResources() throws RepositoryException, RecursionTooDeepException, JSONException {
+ collectChildren(startResource, 0);
+ }
+
+ /**
+ * @param resource
+ * @param currentLevel
+ * @throws RecursionTooDeepException
+ * @throws JSONException
+ * @throws RepositoryException
+ */
+ private void collectChildren(Resource resource, int currentLevel) throws RecursionTooDeepException, JSONException,
+ RepositoryException {
+
+ if (maxRecursionLevels == -1 || currentLevel < maxRecursionLevels) {
+ final Iterator<Resource> children = ResourceUtil.listChildren(resource);
+ while (children.hasNext()) {
+ count++;
+ Resource res = children.next();
+ // SLING-2320: always allow enumeration of one's children;
+ // DOS-limitation is for deeper traversals.
+ if (count > maxResources && maxRecursionLevels > 1) {
+ throw new RecursionTooDeepException(String.valueOf(currentLevel));
+ }
+ collectResource(res, currentLevel);
+ nextQueue.addLast(res);
+ }
+ }
+
+ while (!currentQueue.isEmpty() || !nextQueue.isEmpty()) {
+ if (currentQueue.isEmpty()) {
+ currentLevel++;
+ currentQueue = nextQueue;
+ nextQueue = new LinkedList<Resource>();
+ }
+ Resource nextResource = currentQueue.removeFirst();
+ collectChildren(nextResource, currentLevel);
}
- collectResource(res, currentLevel);
- nextQueue.addLast(res);
- }
}
- while (!currentQueue.isEmpty() || !nextQueue.isEmpty()) {
- if (currentQueue.isEmpty()) {
- currentLevel++;
- currentQueue = nextQueue;
- nextQueue = new LinkedList<Resource>();
- }
- Resource nextResource = currentQueue.removeFirst();
- collectChildren(nextResource, currentLevel);
- }
- }
-
- /**
- * Adds a resource in the JSON tree.
- *
- * @param resource
- * The resource to add
- * @param level
- * The level where this resource is located.
- * @throws RepositoryException
- * @throws JSONException
- */
- protected void collectResource(Resource resource, int level)
- throws RepositoryException, JSONException {
-
- if (!resource.getPath().equals(startingPath)) {
- JSONObject o = adapt(resource);
- getParentJSONObject(resource, level).put(ResourceUtil.getName(resource),
- o);
- }
- }
-
- /**
- * Adapt a Resource to a JSON Object.
- *
- * @param resource
- * The resource to adapt.
- * @return The JSON representation of the Resource
- * @throws JSONException
- */
- private JSONObject adapt(Resource resource) throws JSONException {
- // TODO Find a better way to adapt a Resource to a JSONObject.
- StringWriter writer = new StringWriter();
- jsResourceWriter.dump(resource, writer, 0, tidy);
- return new JSONObject(writer.getBuffer().toString());
- }
-
- /**
- * Get the JSON Object where this resource should be added in.
- *
- * @param resource
- * @param level
- * @return
- * @throws RepositoryException
- * @throws JSONException
- */
- private JSONObject getParentJSONObject(Resource resource, int level)
- throws RepositoryException, JSONException {
- String path = resource.getPath();
- // The root node.
- if (path.equals(startingPath)) {
- return startObject;
- }
-
- // Some level deeper
- String pathDiff = path.substring(startingPath.length());
- String[] names = pathDiff.split("/");
- JSONObject o = startObject;
- for (String name : names) {
- try {
- o = o.getJSONObject(name);
- } catch (JSONException e) {
- }
- }
- return o;
-
- }
-
- /**
- * @return The number of nodes this visitor found.
- */
- public long getCount() {
- return count;
- }
-
- /**
- * @param maxNodes
- * the maxNodes to set
- */
- public void setMaxNodes(long maxNodes) {
- this.maxResources = maxNodes;
- }
-
- /**
- * @return the maxNodes
- */
- public long getMaxNodes() {
- return maxResources;
- }
-
- public JSONObject getJSONObject() {
- return startObject;
- }
+ /**
+ * Adds a resource in the JSON tree.
+ *
+ * @param resource The resource to add
+ * @param level The level where this resource is located.
+ * @throws RepositoryException
+ * @throws JSONException
+ */
+ protected void collectResource(Resource resource, int level) throws RepositoryException, JSONException {
+
+ if (!resource.getPath().equals(startingPath)) {
+ JSONObject o = adapt(resource);
+ getParentJSONObject(resource, level).put(ResourceUtil.getName(resource), o);
+ }
+ }
+
+ /**
+ * Adapt a Resource to a JSON Object.
+ *
+ * @param resource The resource to adapt.
+ * @return The JSON representation of the Resource
+ * @throws JSONException
+ */
+ private JSONObject adapt(Resource resource) throws JSONException {
+ // TODO Find a better way to adapt a Resource to a JSONObject.
+ StringWriter writer = new StringWriter();
+ jsResourceWriter.dump(resource, writer, 0, tidy);
+ return new JSONObject(writer.getBuffer().toString());
+ }
+
+ /**
+ * Get the JSON Object where this resource should be added in.
+ *
+ * @param resource
+ * @param level
+ * @return
+ * @throws RepositoryException
+ * @throws JSONException
+ */
+ private JSONObject getParentJSONObject(Resource resource, int level) throws RepositoryException, JSONException {
+ String path = resource.getPath();
+ // The root node.
+ if (path.equals(startingPath)) {
+ return startObject;
+ }
+
+ // Some level deeper
+ String pathDiff = path.substring(startingPath.length());
+ String[] names = pathDiff.split("/");
+ JSONObject o = startObject;
+ for (String name : names) {
+ try {
+ o = o.getJSONObject(name);
+ } catch (JSONException e) {
+ }
+ }
+ return o;
+
+ }
+
+ /**
+ * @return The number of nodes this visitor found.
+ */
+ public long getCount() {
+ return count;
+ }
+
+ /**
+ * @param maxNodes the maxNodes to set
+ */
+ public void setMaxNodes(long maxNodes) {
+ this.maxResources = maxNodes;
+ }
+
+ /**
+ * @return the maxNodes
+ */
+ public long getMaxNodes() {
+ return maxResources;
+ }
+
+ public JSONObject getJSONObject() {
+ return startObject;
+ }
}