I have got my C = Create to work in inserting nodes.
At this point I do not need to Update any nodes.
My node represents a saved data object where I use the nodes properties to store each name value pair from my object. This creates a set of nodes with the correct properties from each object from my ArrayList<object>.
In CRXDE lite I run the following SQL2 query and it correctly returns the results of each node I want to read
SELECT * from [nt:unstructured] AS t WHERE ISDESCENDANTNODE([/content/specials])
In my bundle to read these values I use the following code
List<Items> specialsList = new ArrayList<Items>();
// Invoke the adaptTo method to create a Session used to create a
Map<String, Object> param = new HashMap<String, Object>();
param.put(ResourceResolverFactory.SUBSERVICE, "readService");
ResourceResolver resolver = null;
try {
resolver = resolverFactory.getServiceResourceResolver(param);
session = resolver.adaptTo(Session.class);.
javax.jcr.query.QueryManager queryManager = session.getWorkspace()
.getQueryManager();
String sqlStatement = "SELECT * from [nt:unstructured] AS t WHERE ISDESCENDANTNODE([/content/specials])";
javax.jcr.query.Query query = queryManager.createQuery(
sqlStatement, "JCR-SQL2");
// Execute the query and get the results ...
javax.jcr.query.QueryResult result = query.execute();
// Iterate over the nodes in the results ...
javax.jcr.NodeIterator nodeIter = result.getNodes();
Long length = nodeIter.getSize(); // IN DEBUG MODE I HAVE A NULL VALUE HERE.
while (nodeIter.hasNext()) {
// For each node-- create a customer instance
i++;
Items item = new Items();
javax.jcr.Node node = nodeIter.nextNode();
item.setProductCategory(node.getProperty("productCategory")
.getString()); // IN DEBUG THIS IMMEDIATELY JUMPS TO
item.setProductName(node.getProperty("productName")
.getString());
// AND SO ON FOR EACH PROPERTY
// Push ITEM to the list
specialsList.add(item);
}
// Log out
session.logout();
} catch (Exception e) {
// LAND HERE STRAIGHT AFTER ---setProductCategory(node.getProperty("productCategory") AND e IS NULL
}
return specialsList;
Finally, how does one DELETE a set of nodes returned from a SQL2 query.
Rgeards
Clive Stewart
Solved! Go to Solution.
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Here is a great StackOverflow topic that talks about all sorts of JCR SQL2 operations:
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Here is a great StackOverflow topic that talks about all sorts of JCR SQL2 operations:
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Hi I looked through them.
I could not find a method for deleting.
Also I have the following error. I have been adapting code from the following tutorial
http://helpx.adobe.com/experience-manager/using/querying-experience-manager-data-using1.html
String sqlStatement = "SELECT * from [nt:unstructured] AS t WHERE ISDESCENDANTNODE([/content/specials])";
javax.jcr.query.Query query = queryManager.createQuery(
sqlStatement, "JCR-SQL2");
// Execute the query and get the results ...
javax.jcr.query.QueryResult result = query.execute();
// Iterate over the nodes in the results ...
javax.jcr.NodeIterator nodeIter = result.getNodes();
Long length = nodeIter.getSize();
setDebugMessage(getDebugMessage() + " nodeIter.getSize() = " + length);
while (nodeIter.hasNext()) {
// For each node-- create a customer instance
Items item = new Items();
javax.jcr.Node node = nodeIter.nextNode();
The length = 20, exactly as many nt:unstructured nodes as I have under /content/specials.
When I get to
javax.jcr.Node node = nodeIter.nextNode();
The loop immediately terminates and finnishes.
I have tested "SELECT * from [nt:unstructured] AS t WHERE ISDESCENDANTNODE([/content/specials])"; on the crxde-lite query form for SQL2 and it returns exactly 20 results.
I really do not understand why. It is as if I had a node Itterator with 0 results.
Please can anyone help.
Regards
Clive Stewart
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Thank you for another helpful reply
Regards
Clive Stewart
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I solved it.
I was using
javax.jcr.Node node = nodeIter.nextNode();
item.setProductCategory(node.getProperty("ProductCategory").getString(););
I changed it to
javax.jcr.Node node = nodeIter.nextNode();
String productCategory = node.getProperty("ProductCategory").getString();
item.setProductCategory(productCategory);
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