Author: vramdal
Date: Fri Apr 17 17:12:57 2009
New Revision: 766087
URL: http://svn.apache.org/viewvc?rev=766087&view=rev
Log:
SLING-930 Adding o.a.s.c.json.jcr.JsonJcrNode + testcase
Added:
incubator/sling/trunk/bundles/commons/json/src/main/java/org/apache/sling/commons/json/jcr/JsonJcrNode.java
incubator/sling/trunk/bundles/commons/json/src/test/java/org/apache/sling/commons/json/jcr/JsonJcrNodeTest.java
Added:
incubator/sling/trunk/bundles/commons/json/src/main/java/org/apache/sling/commons/json/jcr/JsonJcrNode.java
URL:
http://svn.apache.org/viewvc/incubator/sling/trunk/bundles/commons/json/src/main/java/org/apache/sling/commons/json/jcr/JsonJcrNode.java?rev=766087&view=auto
==============================================================================
---
incubator/sling/trunk/bundles/commons/json/src/main/java/org/apache/sling/commons/json/jcr/JsonJcrNode.java
(added)
+++
incubator/sling/trunk/bundles/commons/json/src/main/java/org/apache/sling/commons/json/jcr/JsonJcrNode.java
Fri Apr 17 17:12:57 2009
@@ -0,0 +1,132 @@
+package org.apache.sling.commons.json.jcr;
+
+import org.apache.sling.commons.json.JSONObject;
+import org.apache.sling.commons.json.JSONException;
+
+import javax.jcr.*;
+import java.util.Set;
+import java.util.List;
+import java.util.ArrayList;
+
+/**
+ * This class makes it easy to create a JSON object out of a JCR node. It is a
shameless copy of {...@link JsonItemWriter},
+ * but instead of writing the resulting JSON directly to an output, you get a
JSONObject that you can deal with.
+ *
+ * @author [email protected]
+ * @since Apr 17, 2009 6:55:30 PM
+ */
+public class JsonJcrNode extends JSONObject {
+
+ private Node node;
+ private Set<String> propertyNamesToIgnore;
+
+ /**
+ * Creates a JSONObject out of <code>node</code>. All <code>node</code>'s
properties will be reflected in the JSON
+ * object. In addition, properties <code>jcr:path</code> and
<code>jcr:name</code> are added. Their values are
+ * those returned by <code>node.getPath()</code> and
<code>node.getName()</code>, respectively.
+ * @param node The JCR node to use
+ * @throws JSONException If there's a problem generating the JSON object
+ * @throws RepositoryException If there's a problem reading data from the
JCR repository
+ */
+ public JsonJcrNode(Node node) throws JSONException, RepositoryException {
+ this(node, null);
+ }
+
+ /**
+ * Creates a <code>JSONObject</code> out of <code>node</code>. All
<code>node</code>'s properties will be reflected
+ * in the JSON object, except those in <code>propertyNamesToIgnore</code>.
In addition, properties
+ * <code>jcr:path</code> and <code>jcr:name</code> are added. Their values
are those returned by
+ * <code>node.getPath()</code> and <code>node.getName()</code>,
respectively.
+ * @param node The JCR node to use
+ * @param propertyNamesToIgnore A set of property names that should
<em>not</em> be reflected in the resulting
+ * JSON object.
+ * @throws JSONException If there's a problem generating the JSON object
+ * @throws RepositoryException If there's a problem reading data from the
JCR repository
+ */
+ public JsonJcrNode(Node node, Set<String> propertyNamesToIgnore) throws
JSONException, RepositoryException {
+ this.node = node;
+ this.propertyNamesToIgnore = propertyNamesToIgnore;
+ this.populate();
+ }
+
+ private void populate() throws JSONException, RepositoryException {
+ PropertyIterator properties = node.getProperties();
+ addNative("jcr:path", node.getPath());
+ addNative("jcr:name", node.getName());
+ while (properties.hasNext()) {
+ Property prop = properties.nextProperty();
+ String name = prop.getName();
+ if (propertyNamesToIgnore != null &&
propertyNamesToIgnore.contains(name)) {
+ continue;
+ }
+ addProperty(prop);
+ }
+ }
+
+ private void addNative(String key, String value) throws JSONException,
RepositoryException {
+ if (propertyNamesToIgnore == null ||
!propertyNamesToIgnore.contains(key)) {
+ this.put(key, value);
+ }
+ }
+
+ protected void addProperty(Property p)
+ throws ValueFormatException, RepositoryException, JSONException {
+ // special handling for binaries: we dump the length and not the length
+ if (p.getType() == PropertyType.BINARY) {
+ // TODO for now we mark binary properties with an initial colon in
+ // their name
+ // (colon is not allowed as a JCR property name)
+ // in the name, and the value should be the size of the binary data
+ String key = ":" + p.getName();
+ if (!p.getDefinition().isMultiple()) {
+ this.put(key, p.getLength());
+ } else {
+ final long[] sizes = p.getLengths();
+ List<Long> list = new ArrayList<Long>();
+ for (long value : sizes) {
+ list.add(value);
+ }
+ this.put(key, list);
+ }
+ } else {
+ String key = p.getName();
+
+ if (!p.getDefinition().isMultiple()) {
+ addValue(key, p.getValue());
+ } else {
+ for (Value v : p.getValues()) {
+ addValue(key, v);
+ }
+ }
+ }
+ }
+
+ protected void addValue(String key, Value v) throws IllegalStateException,
RepositoryException, JSONException {
+
+ switch (v.getType()) {
+ case PropertyType.BINARY:
+ this.accumulate(key, 0);
+ break;
+
+ case PropertyType.DATE:
+ this.accumulate(key, JsonItemWriter.format(v.getDate()));
+ break;
+
+ case PropertyType.BOOLEAN:
+ this.accumulate(key, v.getBoolean());
+ break;
+
+ case PropertyType.LONG:
+ this.accumulate(key, v.getLong());
+ break;
+
+ case PropertyType.DOUBLE:
+ this.accumulate(key, v.getDouble());
+ break;
+ default:
+ this.accumulate(key, v.getString());
+ }
+ }
+
+
+}
Added:
incubator/sling/trunk/bundles/commons/json/src/test/java/org/apache/sling/commons/json/jcr/JsonJcrNodeTest.java
URL:
http://svn.apache.org/viewvc/incubator/sling/trunk/bundles/commons/json/src/test/java/org/apache/sling/commons/json/jcr/JsonJcrNodeTest.java?rev=766087&view=auto
==============================================================================
---
incubator/sling/trunk/bundles/commons/json/src/test/java/org/apache/sling/commons/json/jcr/JsonJcrNodeTest.java
(added)
+++
incubator/sling/trunk/bundles/commons/json/src/test/java/org/apache/sling/commons/json/jcr/JsonJcrNodeTest.java
Fri Apr 17 17:12:57 2009
@@ -0,0 +1,31 @@
+package org.apache.sling.commons.json.jcr;
+
+import junit.framework.TestCase;
+import org.apache.sling.commons.json.JSONException;
+import org.apache.sling.commons.testing.jcr.MockNode;
+
+import javax.jcr.RepositoryException;
+import java.util.HashSet;
+import java.util.Set;
+
+/**
+ * @author [email protected]
+ * @since Apr 17, 2009 6:57:04 PM
+ */
+public class JsonJcrNodeTest extends TestCase {
+
+ public void testJcrJsonObject() throws RepositoryException, JSONException {
+ MockNode node = new MockNode("/node1");
+ node.setProperty("prop1", "value1");
+ node.setProperty("prop2", "value2");
+ Set<String> ignoredProperties = new HashSet<String>();
+ ignoredProperties.add("prop2");
+ JsonJcrNode json = new JsonJcrNode(node, ignoredProperties);
+ assertTrue("Did not create property", json.has("prop1"));
+ assertFalse("Created ignored property", json.has("prop2"));
+ assertTrue("Did not create jcr:name", json.has("jcr:name"));
+ assertTrue("Did not create jcr:path", json.has("jcr:path"));
+ }
+
+
+}
