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    <title>topic Re: some questions abut dropbox in Dropbox API Support &amp; Feedback</title>
    <link>https://www.dropboxforum.com/t5/Dropbox-API-Support-Feedback/some-questions-abut-dropbox/m-p/486325#M24428</link>
    <description>&lt;P&gt;Thanks a lot!&lt;/P&gt;</description>
    <pubDate>Tue, 12 Jan 2021 01:33:37 GMT</pubDate>
    <dc:creator>petal</dc:creator>
    <dc:date>2021-01-12T01:33:37Z</dc:date>
    <item>
      <title>some questions abut dropbox</title>
      <link>https://www.dropboxforum.com/t5/Dropbox-API-Support-Feedback/some-questions-abut-dropbox/m-p/485408#M24393</link>
      <description>&lt;P&gt;hi:&lt;/P&gt;
&lt;P&gt;&amp;nbsp; &amp;nbsp; I want to integrate dropbox to my little app using java. Here is some question I want to figure out&lt;/P&gt;
&lt;P&gt;&amp;nbsp; &amp;nbsp; 1.&amp;nbsp; Dropbox updating file by incremental update or full update? I&lt;/P&gt;
&lt;P&gt;&amp;nbsp; &amp;nbsp; 2. If one file is synchronized by multiple device, will the file be covered by each other?&amp;nbsp;&lt;/P&gt;
&lt;P&gt;&amp;nbsp; &amp;nbsp; 3. If one file has been updated by one device, can another device be noticed by dropbox, or should this device query the update itself？&lt;/P&gt;
&lt;P&gt;&amp;nbsp; &amp;nbsp; 4. Are all the apis provided by java SDK the rest api? Or how should I&amp;nbsp;distinguish which is rest api?&lt;/P&gt;
&lt;P&gt;Thanks a lot&lt;/P&gt;
&lt;P&gt;&amp;nbsp;&lt;/P&gt;</description>
      <pubDate>Fri, 08 Jan 2021 09:15:05 GMT</pubDate>
      <guid>https://www.dropboxforum.com/t5/Dropbox-API-Support-Feedback/some-questions-abut-dropbox/m-p/485408#M24393</guid>
      <dc:creator>petal</dc:creator>
      <dc:date>2021-01-08T09:15:05Z</dc:date>
    </item>
    <item>
      <title>Re: some questions abut dropbox</title>
      <link>https://www.dropboxforum.com/t5/Dropbox-API-Support-Feedback/some-questions-abut-dropbox/m-p/485567#M24397</link>
      <description>&lt;P&gt;1. When using the&amp;nbsp;&lt;A href="https://www.dropbox.com/developers" target="_self"&gt;Dropbox API&lt;/A&gt;, such as via &lt;A href="https://github.com/dropbox/dropbox-sdk-java" target="_self"&gt;the official Dropbox API v2&amp;nbsp;Java SDK&lt;/A&gt;, to upload a new version of a file, the app needs to upload the entire new version of the file. The API does not offer a way to upload only the changed portion of a file,&amp;nbsp;but I'll pass this along as a feature request. I can't promise if or when that might be implemented though.&amp;nbsp;&lt;/P&gt;
&lt;P&gt;&amp;nbsp;&lt;/P&gt;
&lt;P&gt;2. I'm not sure I understand exactly what you mean when you say "covered". When an API app on one device updates a file in a&amp;nbsp;Dropbox account, the updated file is saved to the&amp;nbsp;Dropbox servers. What other devices then do is up to the code running on those devices.&lt;/P&gt;
&lt;P&gt;&amp;nbsp;&lt;/P&gt;
&lt;P&gt;3. The&amp;nbsp;Dropbox API does offer some ways to detect or be notified of changes like this. I&amp;nbsp;recommend referring to &lt;A href="https://www.dropbox.com/lp/developers/reference/detecting-changes-guide" target="_self"&gt;the Detecting Changes Guide&lt;/A&gt; for information.&lt;/P&gt;
&lt;P&gt;&amp;nbsp;&lt;/P&gt;
&lt;P&gt;4. &lt;A href="https://github.com/dropbox/dropbox-sdk-java" target="_self"&gt;The official Dropbox API v2&amp;nbsp;Java SDK&lt;/A&gt;&amp;nbsp;as well as the other official SDKs all use the same &lt;A href="https://www.dropbox.com/developers/documentation/http/documentation" target="_self"&gt;HTTPS interface for the&amp;nbsp;Dropbox API&lt;/A&gt;. The SDK supports the same functionality available on the HTTPS API, though new features may lag a bit until the SDK is updated.&lt;/P&gt;</description>
      <pubDate>Fri, 08 Jan 2021 15:41:40 GMT</pubDate>
      <guid>https://www.dropboxforum.com/t5/Dropbox-API-Support-Feedback/some-questions-abut-dropbox/m-p/485567#M24397</guid>
      <dc:creator>Greg-DB</dc:creator>
      <dc:date>2021-01-08T15:41:40Z</dc:date>
    </item>
    <item>
      <title>Re: some questions abut dropbox</title>
      <link>https://www.dropboxforum.com/t5/Dropbox-API-Support-Feedback/some-questions-abut-dropbox/m-p/486017#M24408</link>
      <description>&lt;P&gt;Thanks, your reply really helps&lt;/P&gt;&lt;P&gt;Sorry there is one question I did not describe clearly. I want to ask, if one file in dropbox is being updated by&amp;nbsp;&lt;SPAN&gt;multiple devices at the same time, how will dropbox handld this situation?What will the final document look like？&lt;/SPAN&gt;&lt;/P&gt;</description>
      <pubDate>Mon, 11 Jan 2021 06:59:54 GMT</pubDate>
      <guid>https://www.dropboxforum.com/t5/Dropbox-API-Support-Feedback/some-questions-abut-dropbox/m-p/486017#M24408</guid>
      <dc:creator>petal</dc:creator>
      <dc:date>2021-01-11T06:59:54Z</dc:date>
    </item>
    <item>
      <title>Re: some questions abut dropbox</title>
      <link>https://www.dropboxforum.com/t5/Dropbox-API-Support-Feedback/some-questions-abut-dropbox/m-p/486185#M24417</link>
      <description>&lt;P&gt;Thanks for clarifying! If multiple devices to try write to the same location at the exact same time, they may hit "lock contention". You can find information on that in &lt;A href="https://www.dropbox.com/lp/developers/reference/dbx-performance-guide" target="_self"&gt;the Performance Guide&lt;/A&gt;.&lt;/P&gt;
&lt;P&gt;&amp;nbsp;&lt;/P&gt;
&lt;P&gt;Otherwise, if multiple devices try to write to the same file, the behavior will depend on the write mode that the app specifies. For example, in the Java SDK, you can use&amp;nbsp;&lt;A href="https://dropbox.github.io/dropbox-sdk-java/api-docs/v3.1.x/com/dropbox/core/v2/files/UploadBuilder.html#withMode-com.dropbox.core.v2.files.WriteMode-" target="_self"&gt;UploadBuilder.withMode&lt;/A&gt; to specify the write mode. Check out &lt;A href="https://dropbox.github.io/dropbox-sdk-java/api-docs/v3.1.x/com/dropbox/core/v2/files/WriteMode.html" target="_self"&gt;the WriteMode documentation&lt;/A&gt; for information on the different options.&lt;/P&gt;</description>
      <pubDate>Mon, 11 Jan 2021 15:06:06 GMT</pubDate>
      <guid>https://www.dropboxforum.com/t5/Dropbox-API-Support-Feedback/some-questions-abut-dropbox/m-p/486185#M24417</guid>
      <dc:creator>Greg-DB</dc:creator>
      <dc:date>2021-01-11T15:06:06Z</dc:date>
    </item>
    <item>
      <title>Re: some questions abut dropbox</title>
      <link>https://www.dropboxforum.com/t5/Dropbox-API-Support-Feedback/some-questions-abut-dropbox/m-p/486325#M24428</link>
      <description>&lt;P&gt;Thanks a lot!&lt;/P&gt;</description>
      <pubDate>Tue, 12 Jan 2021 01:33:37 GMT</pubDate>
      <guid>https://www.dropboxforum.com/t5/Dropbox-API-Support-Feedback/some-questions-abut-dropbox/m-p/486325#M24428</guid>
      <dc:creator>petal</dc:creator>
      <dc:date>2021-01-12T01:33:37Z</dc:date>
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