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@trashhalo
trashhalo / build.gradle
Created August 13, 2011 23:55
Gradle task converts markdown to pdf
import com.petebevin.markdown.MarkdownProcessor
import org.xhtmlrenderer.pdf.ITextRenderer
import org.ccil.cowan.tagsoup.Parser
import org.apache.xalan.xsltc.trax.SAX2DOM
import org.xml.sax.InputSource
buildscript{
repositories {
mavenCentral()
mavenRepo urls: "http://scala-tools.org/repo-releases"
@novoj
novoj / ExperimentalPrePostAnnotationSecurityMetadataSource.java
Created March 18, 2012 21:12
Combining custom annotations for securing methods with Spring Security (http://blog.novoj.net)
package cz.novoj.spring.security.aop;
import cz.novoj.spring.security.annotation.RulesRelation;
import cz.novoj.spring.security.annotation.RulesRelation.BooleanOperation;
import org.springframework.core.annotation.AnnotationUtils;
import org.springframework.security.access.ConfigAttribute;
import org.springframework.security.access.method.AbstractMethodSecurityMetadataSource;
import org.springframework.security.access.prepost.*;
import org.springframework.util.Assert;
import org.springframework.util.ClassUtils;
@chitan
chitan / WsChatServlet.java
Created July 7, 2012 01:44
How to use WebSocket of Tomcat
//This sample is how to use websocket of Tomcat.
package wsapp;
import java.io.IOException;
import java.nio.ByteBuffer;
import java.nio.CharBuffer;
import java.util.ArrayList;
import org.apache.catalina.websocket.MessageInbound;
import org.apache.catalina.websocket.StreamInbound;
import org.apache.catalina.websocket.WebSocketServlet;
@danlangford
danlangford / dan.langford.SomeBean.java
Created August 21, 2012 19:47
@value annotations working on spring junit test, annotation ONLY config. no xml
// ./src/main/java/dan/langford/SomeTest.java
package dan.langford;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Component;
@Component
public class SomeBean {
@cpjolicoeur
cpjolicoeur / gist:3590737
Created September 1, 2012 23:15
Ordering a query result set by an arbitrary list in PostgreSQL

I'm hunting for the best solution on how to handle keeping large sets of DB records "sorted" in a performant manner.

Problem Description

Most of us have work on projects at some point where we have needed to have ordered lists of objects. Whether it be a to-do list sorted by priority, or a list of documents that a user can sort in whatever order they want.

A traditional approach for this on a Rails project is to use something like the acts_as_list gem, or something similar. These systems typically add some sort of "postion" or "sort order" column to each record, which is then used when querying out the records in a traditional order by position SQL query.

This approach seems to work fine for smaller datasets, but can be hard to manage on large data sets with hundreds (or thousands) of records needing to be sorted. Changing the sort position of even a single object will require updating every single record in the database that is in the same sort group. This requires potentially thousands of wri

@ungoldman
ungoldman / curl_post_json.md
Last active April 28, 2025 09:21
post a JSON file with curl

How do you POST a JSON file with curl??

You can post a json file with curl like so:

curl -X POST -H "Content-Type: application/json" -d @FILENAME DESTINATION

so for example:

@brentini
brentini / 1x1 Spacer Gif
Created April 30, 2014 19:22
1x1 Spacer Gif
<img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7">
@staltz
staltz / introrx.md
Last active May 15, 2025 10:37
The introduction to Reactive Programming you've been missing
@ssinss
ssinss / EndlessRecyclerOnScrollListener.java
Last active January 19, 2024 08:52
Endless RecyclerView OnScrollListener
import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.RecyclerView;
public abstract class EndlessRecyclerOnScrollListener extends RecyclerView.OnScrollListener {
public static String TAG = EndlessRecyclerOnScrollListener.class.getSimpleName();
private int previousTotal = 0; // The total number of items in the dataset after the last load
private boolean loading = true; // True if we are still waiting for the last set of data to load.
private int visibleThreshold = 5; // The minimum amount of items to have below your current scroll position before loading more.
int firstVisibleItem, visibleItemCount, totalItemCount;
@jonashackt
jonashackt / bash
Last active December 1, 2021 01:45
Remote debugging Spring Boot
### java -jar
java -Xdebug -Xrunjdwp:transport=dt_socket,server=y,address=8001,suspend=y -jar target/cxf-boot-simple-0.0.1-SNAPSHOT.jar
### Maven
Debug Spring Boot app with Maven:
mvn spring-boot:run -Drun.jvmArguments="-Xdebug -Xrunjdwp:transport=dt_socket,server=y,suspend=y,address=8001"