Databases
StackOverflow2013
Postsdbo
PO
 

Note that there are some explanatory texts on larger screens.

plurals
  1. PO
    primarykey
    data
    text
    <p>Just write in blocks instead of copying it entirely into Java's memory first. The below basic example writes it in blocks of 10KB. This way you end up with a consistent memory usage of only 10KB instead of the complete content length. Also the enduser will start getting parts of the content much sooner.</p> <pre><code>response.setContentLength(getContentLength()); byte[] buffer = new byte[10240]; try ( InputStream input = getInputStream(); OutputStream output = response.getOutputStream(); ) { for (int length = 0; (length = input.read(buffer)) &gt; 0;) { output.write(buffer, 0, length); } } </code></pre> <hr> <p>As creme de la creme with regard to performance, you could use NIO <a href="http://docs.oracle.com/javase/8/docs/api/java/nio/channels/Channels.html" rel="noreferrer"><code>Channels</code></a> and a directly allocated <a href="http://docs.oracle.com/javase/8/docs/api/java/nio/ByteBuffer.html" rel="noreferrer"><code>ByteBuffer</code></a>. Create the following utility/helper method in some custom utility class, e.g. <code>Utils</code>:</p> <pre><code>public static long stream(InputStream input, OutputStream output) throws IOException { try ( ReadableByteChannel inputChannel = Channels.newChannel(input); WritableByteChannel outputChannel = Channels.newChannel(output); ) { ByteBuffer buffer = ByteBuffer.allocateDirect(10240); long size = 0; while (inputChannel.read(buffer) != -1) { buffer.flip(); size += outputChannel.write(buffer); buffer.clear(); } return size; } } </code></pre> <p>Which you then use as below:</p> <pre><code>response.setContentLength(getContentLength()); Utils.stream(getInputStream(), response.getOutputStream()); </code></pre>
    singulars
    1. This table or related slice is empty.
    1. POWrite an InputStream to an HttpServletResponse
      singulars
      1. PTQuestion
    1. PTAnswer
    1. USBalusC
    1. USBalusC
    plurals
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. POWrite an InputStream to an HttpServletResponse
      singulars
      1. PTQuestion
    1. This table or related slice is empty.
    1. VO
      singulars
      1. PO
      1. This table or related slice is empty.
      1. VTUpMod
    2. VO
      singulars
      1. PO
      1. This table or related slice is empty.
      1. VTUpMod
    3. VO
      singulars
      1. PO
      1. This table or related slice is empty.
      1. VTUpMod
    1. COI was hoping there could be another way, but thanks anyway
      singulars
      1. PO
      1. USSabry Shawally
    2. COThanks alot BalusC,
      singulars
      1. PO
      1. USSabry Shawally
    3. COOf course many utility packages have this method already defined, so once you start using Guava... http://docs.guava-libraries.googlecode.com/git/javadoc/com/google/common/io/ByteStreams.html#copy(java.io.InputStream, java.io.OutputStream)
      singulars
      1. PO
      1. USMichael Brewer-Davis
 

Querying!

 
Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload