I am trying to download the image from Dataverse using Dynamics Web API.
I am able to succeed in that using {{webapiurl}}sample_imageattributedemos(d66ecb6c-4fd1-ec11-a7b5-6045bda5603f)/entityimage/$value
But when I try to download the full/actual size image - I am getting the file with the reduced size - {{webapiurl}}sample_imageattributedemos(d66ecb6c-4fd1-ec11-a7b5-6045bda5603f)/entityimage/$value?fullsize=true.
I tried to download the image using the sample code where additionally I have added CanStoreFullImage = true attribute.
Please find below code snippet for the reference:
CreateAttributeRequest createEntityImageRequest = new CreateAttributeRequest
{
EntityName = _customEntityName.ToLower(),
Attribute = new ImageAttributeMetadata
{
SchemaName = "EntityImage", //The name is always EntityImage
//Required level must be AttributeRequiredLevel.None
RequiredLevel = new AttributeRequiredLevelManagedProperty(AttributeRequiredLevel.None),
DisplayName = new Microsoft.Xrm.Sdk.Label("Image", 1033),
Description = new Microsoft.Xrm.Sdk.Label("An image to show with this demonstration.", 1033),
CanStoreFullImage = true,
IsPrimaryImage = false,
}
};
How can I achieve this - to download the full size image using Web API?
the correct syntax is size=full, not fullsize=true
to build such requests you can use my tool Dataverse REST Builder, you can find the operations to deal with Image fields under the Manage Image Data request type
Related
I am using HERE-Android-SDK to build a simple navigation solution with offline maps.
While using the offline mode for the search addresses and calculation of a route, I can see that there are results returned from the address-search, which are not included in the installed offline map datasets. Is there anything additional which I need to do, in order to get only search results which are located inside the offline-map data installed on my device?
I am using the following code snippets.
download offline maps for a specific country:
mapsLoader.selectDataGroup(MapPackage.SelectableDataGroup.TruckAttributes)
mapsLoader.installMapPackages(listOf(mapPackageId))
search request for addresses:
val term = "New York"
val center = GeoCoordinate(lastWayPoint.latitude, lastWayPoint.longitude)
val request = SearchRequest(term)
request.connectivity = Request.Connectivity.OFFLINE
request.locale = Locale.GERMAN
request.setSearchCenter(center)
request.collectionSize = 5
request.execute { data, error ->
if (error != ErrorCode.NONE) return
// handle search results here
}
Thanks for all of your help in advance!
In summary
File.writeFile() creates a PNG file of 0 bytes when trying to write a Blob made from base64 data.
In my application, I am trying to create a file that consists of base64 data stored in the db. The rendered equivalent of the data is a small anti-aliased graph curve in black on a transparent background (never more that 300 x 320 pixels) that has previously been created and stored from a canvas element. I have independently verified that the stored base64 data is indeed correct by rendering it at one of various base64 encoders/decoders available online.
Output from "Ionic Info"
--------------------------------
Your system information:
Cordova CLI: 6.3.1
Gulp version: CLI version 3.9.1
Gulp local:
Ionic Framework Version: 2.0.0-rc.2
Ionic CLI Version: 2.1.1
Ionic App Lib Version: 2.1.1
Ionic App Scripts Version: 0.0.39
OS:
Node Version: v6.7.0
--------------------------------
The development platform is Windows 10, and I've been testing directly on a Samsung Galaxy S7 and S4 so far.
I know that the base64 data has to be converted into binary data (as a Blob) first, as File does not yet support writing base64 directly in to an image file. I found various techniques with which to do this, and the code which seems to suit my needs the most (and reflects a similar way I would have done it in java is illustrated below):
Main code from constructor:
this.platform.ready().then(() => {
this.graphDataService.getDataItem(this.job.id).then((data) =>{
console.log("getpic:");
let imgWithMeta = data.split(",")
// base64 data
let imgData = imgWithMeta[1].trim();
// content type
let imgType = imgWithMeta[0].trim().split(";")[0].split(":")[1];
console.log("imgData:",imgData);
console.log("imgMeta:",imgType);
console.log("aftergetpic:");
// this.fs is correctly set to cordova.file.externalDataDirectory
let folderpath = this.fs;
let filename = "dotd_test.png";
File.resolveLocalFilesystemUrl(this.fs).then( (dirEntry) => {
console.log("resolved dir with:", dirEntry);
this.savebase64AsImageFile(dirEntry.nativeURL,filename,imgData,imgType);
});
});
});
Helper to convert base64 to Blob:
// convert base64 to Blob
b64toBlob(b64Data, contentType, sliceSize) {
//console.log("data packet:",b64Data);
//console.log("content type:",contentType);
//console.log("slice size:",sliceSize);
let byteCharacters = atob(b64Data);
let byteArrays = [];
for (let offset = 0; offset < byteCharacters.length; offset += sliceSize) {
let slice = byteCharacters.slice(offset, offset + sliceSize);
let byteNumbers = new Array(slice.length);
for (let i = 0; i < slice.length; i++) {
byteNumbers[i] = slice.charCodeAt(i);
}
let byteArray = new Uint8Array(byteNumbers);
byteArrays.push(byteArray);
}
console.log("size of bytearray before blobbing:", byteArrays.length);
console.log("blob content type:", contentType);
let blob = new Blob(byteArrays, {type: contentType});
// alternative way WITHOUT chunking the base64 data
// let blob = new Blob([atob(b64Data)], {type: contentType});
return blob;
}
save the image with File.writeFile()
// save the image with File.writeFile()
savebase64AsImageFile(folderpath,filename,content,contentType){
// Convert the base64 string in a Blob
let data:Blob = this.b64toBlob(content,contentType,512);
console.log("file location attempt is:",folderpath + filename);
File.writeFile(
folderpath,
filename,
data,
{replace: true}
).then(
_ => console.log("write complete")
).catch(
err => console.log("file create failed:",err);
);
}
I have tried dozens of different decoding techniques, but the effect is the same. However, if I hardcode simple text data into the writeFile() section, like so:
File.writeFile(
folderpath,
"test.txt",
"the quick brown fox jumps over the lazy dog",
{replace: true}
)
A text file IS created correctly in the expected location with the text string above in it.
However, I've noticed that whether the file is the 0 bytes PNG, or the working text file above, in both cases the ".then()" consequence clause of the File Promise never fires.
Additionally, I swapped the above method and used the Ionic 2 native Base64-To-Gallery library to create the images, which worked without a problem. However, having the images in the user's picture gallery or camera roll is not an option for me as I do not wish to risk a user's own pictures while marshalling / packing / transmitting / deleting the data-rendered images. The images should be created and managed as part of the app.
User marcus-robinson seems to have experienced a similar issue outlined here, but it was across all file types, and not just binary types as seems to be the case here. Also, the issue seems to have been closed:
https://github.com/driftyco/ionic/issues/5638
Anybody experiencing something similar, or possibly spot some error I might have caused? I've tried dozens of alternatives but none seem to work.
I had similar behaviour saving media files which worked perfectly on iOS. Nonetheless, I had the issue of 0 bytes file creation on some Android devices in release build (dev build works perfectly). After very long search, I followed the following solution
I moved the polyfills.js script tag to the top of the index.html in the ionic project before the cordova.js tag. This re-ordering somehow the issue is resolved.
So the order should look like:
<script src="build/polyfills.js"></script>
<script type="text/javascript" src="cordova.js"></script>
Works on ionic 3 and ionic 4.
The credits go to 1
I got that working with most of your code:
this.file.writeFile(this.file.cacheDirectory, "currentCached.jpeg", this.b64toBlob(src, "image/jpg", 512) ,{replace: true})
The only difference i had was:
let byteCharacters = atob(b64Data.replace(/^data:image\/(png|jpeg|jpg);base64,/, ''));
instead of your
let byteCharacters = atob(b64Data);
Note: I did not use other trimming etc. like those techniques you used in your constructor class.
I am trying to delete a file from a sharepoint document library.
My application is in C#, which uses the web services of sharepoint.
Would like to know how this can be done.
Thanks in advance.
Delete a Document in SharePoint using Web Services
1.Add Web Reference to http://[your site]/_vti_bin/Lists.asmx
2.You need Document ID, Library Name, and Url to the document to be deleted
var spWebServiceLists = "http://[your site]/_vti_bin/Lists.asmx";
var listService = new Lists
{
Credentials = CredentialCache.DefaultCredentials,
Url = spWebServiceLists
};
string id = 10;
string library = #"Shared Documents";
string url = #"http://[your site]/Shared Documents/Test.docx";
string xml = "<Method ID='1' Cmd='Delete'>" +
"<Field Name='ID'>" + id + "</Field>" +
"<Field Name='FileRef'>" + HttpUtility.UrlDecode(url) + "</Field>" +
"</Method>";
/*Get Name attribute values (GUIDs) for list and view. */
System.Xml.XmlNode ndListView = listService.GetListAndView(library, "");
string strListID = ndListView.ChildNodes[0].Attributes["Name"].Value;
string strViewID = ndListView.ChildNodes[1].Attributes["Name"].Value;
/*Create an XmlDocument object and construct a Batch element and its
attributes. Note that an empty ViewName parameter causes the method to use the default view. */
System.Xml.XmlDocument doc = new System.Xml.XmlDocument();
System.Xml.XmlElement batchElement = doc.CreateElement("Batch");
batchElement.SetAttribute("OnError", "Continue");
batchElement.SetAttribute("ListVersion", "1");
batchElement.SetAttribute("ViewName", strViewID);
/*Specify methods for the batch post using CAML. To update or delete,
specify the ID of the item, and to update or add, specify
the value to place in the specified column.*/
batchElement.InnerXml = xml;
XmlNode item;
item = listService.UpdateListItems(library, batchElement);
I just tested this code and works well.
For more information please see following links
Lists.UpdateListItems Method
How to: Update List Items
If you work with SharePoint 2010, you can use CSOM to access SharePoint web services. This link could be helpful to execute crud operations. If you work with SharePoint 2013 there is also CSOM API, it has similar funcitonality as in 2010.
I need book image,title,author,isbn,isbn13 only.
I am using
//ItemSearch where the request is stored as a dictionary.
var searchItem = new Dictionary<string, string>();
searchItem["Service"] = "AWSECommerceService";
searchItem["Version"] = AwsVersion;
searchItem["Operation"] = "ItemSearch";
searchItem["ResponseGroup"] = "ItemAttributes,Images";
searchItem["AssociateTag"] = "Books";
searchItem["SearchIndex"] = "Books";
searchItem["Condition"] = "All";
searchItem["ItemPage"] = itemPage;
searchItem["Keywords"] = searchText;
string searchDetailsRequestUrl = detailSearchSingedRequest.GetCompleteUrl(searchItem);
I am getting the response xml but the search is too slower because I am getting large xml as response. So how should I get small xml as response to make the search faster with all the required informations(ie book image,title,author,isbn,isbn13) ?
I have tried by putting "ResponseGroup"="Medium". But I got large xml response than the "ResponeGroup"="ItemAttributes,Images".
Specify ResponseGroup to only certain items you want to retrieve will reduce your page load.
I'm trying to create a thumbnail from a pdf in coldfusion, but no thumbnail gets created and no exception is thrown.
(coldfusion 9)
my code:
var source = "A:\testfolder\test.pdf";
var destination = "A:\testfolder\";
createImageFromPdf(source, destination);
createImageFromPdf function:
public void function createImageFromPdf(required string source, required string destination,
numeric pages = 1, string resolution = "low",
numeric scale = 100, boolean overwrite = true){
var pdf = new pdf();
pdf.setSource(arguments.source);
pdf.thumbnail(pages = arguments.pages, resolution = arguments.resolution,
scale = arguments.scale, overwrite = arguments.overwrite);
}
After running this code, i don't receive errors or exceptions, but no image was generated in A:\testfolder\
I'm probably missing something obvious here, but can't find it.
Also no log records are created in application or exception log, pdf is not protected and I'm sure that the folder is writable.
All help is appreciated.
Thanks.
You just forgot to pass along the destination
pdf.thumbnail(destination=arguments.destination
, pages = arguments.pages
, resolution = arguments.resolution
, scale = arguments.scale
, overwrite = arguments.overwrite);