i am trying to create a persistence client object in the following way:
var create:Create = new Create();
create.sql = "CREATE TABLE IF NOT EXISTS REPOFILE( REPOFILEID INTEGER PRIMARY KEY AUTOINCREMENT, NAME TEXT, CHECKSUM TEXT, BYTES INTEGER, CREATED INTEGER, UPDATED INTEGER, ISDIRECTORY INTEGER )";
var sqlMap:SqlMap = new SqlMap( { createRepoFileTable : create } );
connectionManager = new ConnectionManagerFactory().createConnectionManager();
persistenceClient = new PersistenceClient( sqlMap, connectionManager );
the problem i am encountering is that the "map" property of the sqlmap stays not retrievable even though there is a valid "_maps" array inside the sqlmap object.
maps [] (#b812d09)
[0] Object (#b103d61)
createRepoFileTable com.adobe.cairngorm.persistence.api.grammar.Create (#b103a91)
length 1
when trying to execute the create table sql, the statement factory complains:
Error: SQLERROR0014: Statement 'createRepoFileTable' not found in SQL map
somehow the sqlmap class is unable to copy the properties of the object passed to it to the map property using the ObjectUtil class.
i do not want to use an mxml file and i also do not want to use spicelib like in the example.
what am i doing wrong here?
so i figured out that in my case somehow the calls in the SqlMap class to the spicelib components didn't work:
var classInfo:ClassInfo=ClassInfo.forInstance(source);
var properties:Array=classInfo.getProperties();
the properties array was always empty.
however, i took the persistence lib's source code and changed the loop in the ObjectUtil's to go over the object's properties directly:
for (var propertyName:String in source)
now it works, although i am not really happy having modified the ObjectUtil class... maybe someone has a better take on this.
Related
I am using Google diff-match-patch JAVA plugin to create patch between two JSON strings and storing the patch to database.
diff_match_patch dmp = new diff_match_patch();
LinkedList<Patch> diffs = dmp.patch_make(latestString, originalString);
String patch = dmp.patch_toText(diffs); // Store patch to DB
Now is there any way to use this patch to re-create the originalString by passing the latestString?
I google about this and found this very old comment # Google diff-match-patch Wiki saying,
Unpatching can be done by just looping through the diff, swapping
DIFF_INSERT with DIFF_DELETE, then applying the patch.
But i did not find any useful code that demonstrates this. How could i achieve this with my existing code ? Any pointers or code reference would be appreciated.
Edit:
The problem i am facing is, in the front-end i am showing a revisions module that shows all the transactions of a particular fragment (take for example an employee details), like which user has updated what details etc. Now i am recreating the fragment JSON by reverse applying each patch to get the current transaction data and show it as a table (using http://marianoguerra.github.io/json.human.js/). But some JSON data are not valid JSON and I am getting JSON.parse error.
I was looking to do something similar (in C#) and what is working for me with a relatively simple object is the patch_apply method. This use case seems somewhat missing from the documentation, so I'm answering here. Code is C# but the API is cross language:
static void Main(string[] args)
{
var dmp = new diff_match_patch();
string v1 = "My Json Object;
string v2 = "My Mutated Json Object"
var v2ToV1Patch = dmp.patch_make(v2, v1);
var v2ToV1PatchText = dmp.patch_toText(v2ToV1Patch); // Persist text to db
string v3 = "Latest version of JSON object;
var v3ToV2Patch = dmp.patch_make(v3, v2);
var v3ToV2PatchTxt = dmp.patch_toText(v3ToV2Patch); // Persist text to db
// Time to re-hydrate the objects
var altV3ToV2Patch = dmp.patch_fromText(v3ToV2PatchTxt);
var altV2 = dmp.patch_apply(altV3ToV2Patch, v3)[0].ToString(); // .get(0) in Java I think
var altV2ToV1Patch = dmp.patch_fromText(v2ToV1PatchText);
var altV1 = dmp.patch_apply(altV2ToV1Patch, altV2)[0].ToString();
}
I am attempting to retrofit this as an audit log, where previously the entire JSON object was saved. As the audited objects have become more complex the storage requirements have increased dramatically. I haven't yet applied this to the complex large objects, but it is possible to check if the patch was successful by checking the second object in the array returned by the patch_apply method. This is an array of boolean values, all of which should be true if the patch worked correctly. You could write some code to check this, which would help check if the object can be successfully re-hydrated from the JSON rather than just getting a parsing error. My prototype C# method looks like this:
private static bool ValidatePatch(object[] patchResult, out string patchedString)
{
patchedString = patchResult[0] as string;
var successArray = patchResult[1] as bool[];
foreach (var b in successArray)
{
if (!b)
return false;
}
return true;
}
I need to create a result set in phalcon and use it as it was an array.
Im trying to find an example or more info on the documentation but it seems it's not possible.
On the API you can see the contructor params, this one is for a Resultset/Simple
public function __construct($columnMap, $model, $result, \Phalcon\Cache\BackendInterface $cache=null, $keepSnapshots=null){ }
an example:
$robot = new Robot();
$robots = new Resultset(null, $robot, $robot->getReadConnection()->query($sql, $params));
You must take in consideration that the Resultset is not a collection, it is a traversable pointer to the database conecction. There is a post where the team will consider to add more "collection" functionalities to the object: https://github.com/phalcon/cphalcon/issues/10580
I have a table which gets its data server-side, using custom server-side initialization params which vary depending upon which report is produced. Once the table is generated, the user may open a popup in which they can add multiple additional filters on which to search. I need to be able to use the same initialization params as the original table, and add the new ones using fnServerParams.
I can't figure out how to get the original initialization params using the datatables API. I had thought I could get a reference to the object, get the settings using fnSettings, and pass those settings into a new datatables instance like so:
var oSettings = $('#myTable').dataTable().fnSettings();
// add additional params to the oSettings object
$('#myTable').dataTable(oSettings);
but the variable returned through fnSettings isn't what I need and doesn't work.
At this point, it seems like I'm going to re-architect things so that I can pass the initialization params around as a variable and add params as needed, unless somebody can steer me in the right direction.
EDIT:
Following tduchateau's answer below, I was able to get partway there by using
var oTable= $('#myTable').dataTable(),
oSettings = oTable.fnSettings(),
oParams = oTable.oApi._fnAjaxParameters(oSettings);
oParams.push('name':'my-new-filter', 'value':'my-new-filter-value');
and can confirm that my new serverside params are added on to the existing params.
However, I'm still not quite there.
$('#myTable').dataTable(oSettings);
gives the error:
DataTables warning(table id = 'myTable'): Cannot reinitialise DataTable.
To retrieve the DataTables object for this table, please pass either no arguments
to the dataTable() function, or set bRetrieve to true.
Alternatively, to destroy the old table and create a new one, set bDestroy to true.
Setting
oTable.bRetrieve = true;
doesn't get rid of the error, and setting
oSettings.bRetrieve = true;
causes the table to not execute the ajax call. Setting
oSettings.bDestroy = true;
loses all the custom params, while setting
oTable.bDestroy = true;
returns the above error. And simply calling
oTable.fnDraw();
causes the table to be redrawn with its original settings.
Finally got it to work using fnServerParams. Note that I'm both deleting unneccessary params and adding new ones, using a url var object:
"fnServerParams": function ( aoData ) {
var l = aoData.length;
// remove unneeded server params
for (var i = 0; i < l; ++i) {
// if param name starts with bRegex_, sSearch_, mDataProp_, bSearchable_, or bSortable_, remove it from the array
if (aoData[i].name.search(/bRegex_|sSearch_|mDataProp_|bSearchable_|bSortable_/) !== -1 ){
aoData.splice(i, 1);
// since we've removed an element from the array, we need to decrement both the index and the length vars
--i;
--l;
}
}
// add the url variables to the server array
for (i in oUrlvars) {
aoData.push( { "name": i, "value": oUrlvars[i]} );
}
}
This is normally the right way to retrieve the initialization settings:
var oSettings = oTable.fnSettings();
Why is it not what you need? What's wrong with these params?
If you need to filter data depending on your additional filters, you can complete the array of "AJAX data" sent to the server using this:
var oTable = $('#myTable').dataTable();
var oParams = oTable.oApi._fnAjaxParameters( oTable );
oParams.push({name: "your-additional-param-name", value: your-additional-param-value });
You can see some example usages in the TableTools plugin.
But I'm not sure this is what you need... :-)
Ektron 8.0.1 SP1
I am using SmartForms and Content Types to read (and hopefully write) data. I can read data but now I am attempting to write a new record similar to the following.
ContentTypeManager<member> contentTypeManager = new ContentTypeManager<member>();
ContentType<member> newmem = new ContentType<member>();
newmem.SmartForm.details.field1 = "Chuck"; // This line throws 'Object reference not set to an instance of an object.' error
newmem.SmartForm.details.field2 = "Norris";
contentTypeManager.Update(newmem);
I get the error "Object reference not set to an instance of an object." for that first assignment line. What am I missing?
I am having trouble finding good documentation on ContentTypes for 8.0.1 now that the Ektron website has been redesigned.
Thx.
Thanks for clarifying, to ADD content to a folder that has a smartform assigned to it, the basic code block should get you started: (Note: the Html attribute of the content is simply the xml matched to the schema you created)
Ektron.Cms.Framework.Content.ContentManager cmanager = new Cms.Framework.Content.ContentManager();
Ektron.Cms.ContentData cdata = new ContentData();
cdata.FolderId = 0;
cdata.XmlConfiguration.Id = 0; //SMARTFORM ID HERE
cdata.Html = "<root><field1>field1 value</field1><field2>field2 value</field2></root>";
cmanager.Add(cdata);
You could update ContentTypes.cs to include an Add method. Just copy the Update method and change contentManager.Update to contentManager.Add.
public void Add(ContentType<T> contentType)
{
Initialize();
contentType.Content.Html = Ektron.Cms.EkXml.Serialize(typeof(T), contentType.SmartForm);
contentManager.Add(contentType.Content);
}
Unfortunately, contentManager.Add returns void. Ideally it should return the new content ID.
I'm implementing a custom data provider, I have gotten it to the point that it returns data and can be filtered, but am having some trouble getting relationships to work.
When querying the metadata the relationships look correct, and when querying a table the related property links appear, but when attempting to access a ResourceReference property I get the following exception:
Object reference not set to an instance of an object.
System.NullReferenceException
stacktrace at System.Data.Services.Providers.DataServiceProviderWrapper.GetResourceAssociationSet(ResourceSetWrapper resourceSet, ResourceType resourceType, ResourceProperty resourceProperty)
at System.Data.Services.Providers.DataServiceProviderWrapper.GetContainer(ResourceSetWrapper sourceContainer, ResourceType sourceResourceType, ResourceProperty navigationProperty)
at System.Data.Services.Providers.DataServiceProviderWrapper.GetResourceProperties(ResourceSetWrapper resourceSet, ResourceType resourceType)
at System.Data.Services.Serializers.SyndicationSerializer.WriteObjectProperties(IExpandedResult expanded, Object customObject, ResourceType resourceType, Uri absoluteUri, String relativeUri, SyndicationItem item, DictionaryContent content, EpmSourcePathSegment currentSourceRoot)
at System.Data.Services.Serializers.SyndicationSerializer.WriteEntryElement(IExpandedResult expanded, Object element, ResourceType expectedType, Uri absoluteUri, String relativeUri, SyndicationItem target)
at System.Data.Services.Serializers.SyndicationSerializer.WriteTopLevelElement(IExpandedResult expanded, Object element)
at System.Data.Services.Serializers.Serializer.WriteRequest(IEnumerator queryResults, Boolean hasMoved)
at System.Data.Services.ResponseBodyWriter.Write(Stream stream)
Here's a sample of how I create the relationships:
var sourceReference = new ResourceProperty(
relatedType.ResourceTypeName,
ResourcePropertyKind.ResourceReference,
relatedType.ResourceType);
sourceReference.CanReflectOnInstanceTypeProperty = false;
compoundType.ResourceType.AddProperty(sourceReference);
var destinationReference = new ResourceProperty(
compoundType.ResourceSetName,
ResourcePropertyKind.ResourceSetReference,
compoundType.ResourceType);
destinationReference.CanReflectOnInstanceTypeProperty = false;
source.ResourceType.AddProperty(destinationReference);
var sourceAssociation = new ResourceAssociationSet(
"source",
new ResourceAssociationSetEnd(compoundType.ResourceSet, compoundType.ResourceType, sourceReference),
new ResourceAssociationSetEnd(relatedType.ResourceSet, relatedType.ResourceType, null));
var destinationAssociation = new ResourceAssociationSet(
"destination",
new ResourceAssociationSetEnd(relatedType.ResourceSet, relatedType.ResourceType, destinationReference),
new ResourceAssociationSetEnd(compoundType.ResourceSet, compoundType.ResourceType, null));
From looking at the sample code on the OData website I thought I'd done it all correctly, and cannot determine my error. Any ideas? or tips on debugging a custom WCF Data service?
Update:
Here's what happens just before the null exception.
Have a resource set Collars with a relationship to Projects so I do this query:
blah.svc/Collars(1)/Project
My override of GetResourceAssociationSet in my IDataServiceMetadataProvider gets called with the parameters ResourceSet = Collars, ResourceType = Collar, Property = Project and I return the association set specified above.
GetResourceAssociationSet is then called again with ResourceSet = Projects, ResourceType = Collar, Property = Project and I return the same association set.
Then in System.Data.Services.Providers.GetResourceAssociationSetEnd the variables passed in are resourceSet = Projects, resourceType = Collar, resourceProperty = Project, this function returns null.
Which makes thisEnd in System.Data.Services.Providers.DataServiceProviderWrapper.GetResourceAssociationSet equal to null.
Then GetRelatedResourceAssociationSetEnd is called with the same variables and also returns null.
So it then crashes with the call
ResourceSetWrapper relatedSet = this.ValidateResourceSet(relatedEnd.ResourceSet);
because relatedEnd is null.
Well, in my debugging I noticed the last time GetResourceAssociationSet was called before the error occurred was for a case where the resourceSet and resourceType parameters had different values (in the case of a derived type).
So, I looked and found this
WCF data services (OData), query with inheritance limitation?
...and lo and behold this uninformative null reference exception (at least in my case) is caused by that same issue. I removed the offending property (and then moved it to the base resource set, even though it doesn't exist there in practice), and the issue was resolved.
Interesting side note (in case this helps the original poster): ResourceType.Properties includes properties from Base Types. Had to change some code to use PropertiesDeclaredOnThisType instead...
The solution for me was that I had made a mistake in my implementation of GetResourceType in my IDataServiceQueryProvider.
When querying a Resource Property that was a ResourceSetReference I was returning the ResourceType of the parent resource, and not the type of the related resource.