This CurrentlyInCreationExceptionexception happens during the construction of the bean.
If the bean has reference to other beans, and if those beans which are referenced have the this bean as property or constructor parameter, then it would be cyclic and hence this exception would be thrown.
So, check if you have beans that are referring to each other on you hbm/annotations files.
One cool feature that SQL Server provides is the XML data type. This enables to save XML data as it is just like any other data type in the database.
Once we put the xml, then we can apply XPath to query the data from the sql server nifty IDE.
But, when you try to use the same query outside of the IDE, you would not be able to get the data as expected.
I was working on PHP project where the data (XML) has to be retrieved from SQL Server. Here is the hack step by step
1. Configure your PDO
Say:
try {
$hostname = "host"; //host
$dbname = "dbname"; //db name
$username = "user"; // username like 'sa'
$pw = "pass"; // password for the user
$dbh = new PDO ("mssql:host=$hostname;dbname=$dbname","$username","$pw");
} catch (PDOException $e) {
echo "Failed to get DB handle: " . $e->getMessage() . "n";
exit;
}
**taken from php.net
2. Once you got the handle ($dbh) add the following on the handle:
$handle = getHandle(); //function like above to give you the handle
$handle->exec('SET QUOTED_IDENTIFIER ON');
$handle->exec('SET ANSI_WARNINGS ON');
$handle->exec('SET ANSI_PADDING ON');
$handle->exec('SET ANSI_NULLS ON');
$handle->exec('SET CONCAT_NULL_YIELDS_NULL ON');
That is all, this are actually additional parameters that sql server would add when sending xml based query to the engine.
Happy XMLing 🙂
Go to tomcat folder and open conf directory.
In there there a file named server.xml.
look for <connector port=""
put the port there and you are done.
This simple java class would help to get values of the xml format as key and value map in java.
It has some limitation on the xml that you would be using, yet it would be a ground step for building other.
package helpers;
import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.UnsupportedEncodingException;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import org.xml.sax.SAXException;
import org.xml.sax.SAXParseException;
/**
*
* Simple XML Class -
* This XML Class is a simple helper only for specific case. Originally developed to get
* key and value of flat xml.
* Feel free to use this piece of code as you like with/out permission - if possible mention this site.
* I am not responsible for any consequences that would result after using this piece of code.
*
* @author https://gullele.com
*/
public class XMLHelper {
private DocumentBuilderFactory documentBuilderFactory;
private DocumentBuilder documentBuilder;
public XMLHelper(){
try{
this.documentBuilderFactory = DocumentBuilderFactory.newInstance();
this.documentBuilder = this.documentBuilderFactory.newDocumentBuilder();
}
catch(ParserConfigurationException pce){
//log error
}
}
//Simple test
public static void main(String argv[]) {
XMLHelper xmlHelper = new XMLHelper();
try {
String xmlDoc = "<?xml version="1.0"?><flatFields><java>6.0</java><xml>yes</xml><tags>given tags</tags><doc /><multipleRow /></flatFields>";
Document doc = xmlHelper.getDocumentBuilder().parse(
xmlHelper.getInputStream(xmlDoc)
);
doc.getDocumentElement().normalize();
NodeList nodeLst = doc.getDocumentElement().getChildNodes();
Map elemen = xmlHelper.getElementKeyValue(nodeLst);
Iterator it = elemen.entrySet().iterator();
while (it.hasNext()) {
Map.Entry pairs = (Map.Entry)it.next();
System.out.println(pairs.getKey() + " = " + pairs.getValue());
}
} catch (SAXParseException e) {
//log error
} catch (SAXException e) {
//log error
} catch (IOException e) {
//log error
}
}
/**
* Provides NodeList from the given Document object by the tagName
* @param Document - doc
* @param tagname
* @return NodeList
*/
public NodeList getNodeListByTag(Document doc, String tagname){
NodeList nodeList = null;
if (doc !=null && !tagname.isEmpty()){
nodeList = doc.getElementsByTagName(tagname);
}
return nodeList;
}
/**
*
* @param nodeList
* @return Map
*/
public Map getElementKeyValue(NodeList nodeList){
Map elements = new HashMap();
if (nodeList!=null && nodeList.getLength()>0 ){
for(int i=0 ; i < nodeList.getLength() ; i++){
Node node = nodeList.item(i); //Take the node from the list
NodeList valueNode = node.getChildNodes(); // get the children of the node
String value = (valueNode.item(0)!=null) ? valueNode.item(0).getNodeValue() : "";
elements.put(node.getNodeName(), value);
}
}
return elements;
}
/**
* Returns InputString given string
* @param string
* @return InputStream
*/
public InputStream getInputStream(String string){
InputStream inputStream = null;
if (!string.isEmpty()){
try{
inputStream = new ByteArrayInputStream(string.getBytes("UTF-8"));
}
catch(UnsupportedEncodingException uee){
}
}
return inputStream;
}
/**
* Setters and getters
* @return
*/
public DocumentBuilderFactory getDocumentBuilderFactory() {
return documentBuilderFactory;
}
public void setDocumentBuilderFactory(
DocumentBuilderFactory documentBuilderFactory) {
this.documentBuilderFactory = documentBuilderFactory;
}
public DocumentBuilder getDocumentBuilder() {
return documentBuilder;
}
public void setDocumentBuilder(DocumentBuilder documentBuilder) {
this.documentBuilder = documentBuilder;
}
}An output for the test main method would be:
tags = given tags
doc =
multipleRow =
xml = yes
java = 6.0
See how to handle unicode in database with java here
Find the longest palindrome sequence from given characters
Can you find pairs that makes K complementary from the array?
There are a number of places where string would be needed to be changed to InputStream object. For example the Dom parser would expect an InputStream for the creation of its DocumentBuilder
Here is the simple yet powerful single line doing the task!!
inputStream = new ByteArrayInputStream(string.getBytes("UTF-8"));
This would select and print on the terminal.
Say you want to examine gullele.wordpress.com from all index.html files that are residing in some directory and sub directory
then:
find . -name ‘index.html’ -exec ‘gullele.wordpress.com’ {} ; -print
would list all index.html files with the given content inside them.
Thanks to JQuery, handling javascript has never been easy. Bigger things while working on the client side would be querying the DOM for specific components. Among the tremendously many options, I would discuss the find and filter.
For illustration of the discussion let’s have the following example HTML:
<div class="upper"><p>Upper text goes here</p><div> <div class="upper"><p>Another <b>Upper text goes</b> here</p><div> <div class="middle"><p>middle <b>text goes</b> here</p><div> <div class="lower">lower <b>text goes</b> here<div> <div class="lower"><p>still another lower <i>text goes</i> here</p><div>
Using Filter
Filter would provide all the given components which are screened by the given condition. the query:
jQuery(‘div’).filter(‘.upper’) would provide two elements of div that have class upper on them. so alert(jQuery(‘div’).filter(‘.upper’).length) would alert two. Changing the class to middle and lower would result one and two respectively.
Using Find
Find, like the filter would provide elements and unlike filter, it would apply filtering on the children of the given component. Here is an example
jQuery('div').find('p').addClass('border-it');
This query would select the ‘p’ tag under every div element and would apply the class ‘border-it’ to the ‘p’ element only. Which means, it would iterate on the given condition on the parent component.
Finding all the bolds and underlining them would be:
jQuery('div').find('p').find('b').css('text-decoration', 'underline');
Also, this can be done ins succinct way as:
jQuery('div p b').css('text-decoration','underline');
How about if we want to select both the parent and the selected child:
In this case the handy method andSelf() would be there. Say if we want to border only the bold text and that of the enclosing div, we would have:
jQuery('div').find('p').find('b').andSelf().css('border', '1px black solid');
I guess ls is a laudable command in the Linux world – the fact that everything is a file, we exploit it in a daily manner.
One usage of the a helpful command on ls is grep for listing regex’d listing.
here is the the simplest command that can list all the files/directories with that start with ‘pe’
First we would be on the directory we want the listing, then we would pipe the listing to grep!
ls | grep "^pe.*"
Even
ls | grep "^pe"
would result the same.
One that contains pe would be
ls | grep "pe"
and the one that ends with pe would be
ls | grep "pe$"
Further reading Ubunutu help on grep
I remember once enjoying PECL (PHP Extension Community Library)on my machine flourishingly. All of the sudden, I was not able find it – here is how I find out.
Trying to play with the new MongoDb, I had to install the driver from the the repository as
sudo pecl install mongo
This time I got the wrong message of not having the pecl. It was easy though – just
sudo apt-get install php5-dev
As the PECL can be found inside it.
I have read some blogs complaining this one not working and passing the problem through installing the PEAR pachage – WHICH EVER IS EASIER.
Happy PECLing..
May be this would be the first error one might come across after following some tutorials or books.
Here is the quick fix use
render :text => "what ever to print here"
in place of the
render_text "what ever to print here"
It should solve the problem!
Happy rubying