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Sunday, February 15, 2015

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Tip Export JPivot output to excel in Pentaho 5 x version By default export to Excel is disabled in 5 x server

Hi Readers,

This tip is useful to enable the "Print" property of JPivot output to Export into Excel sheet.

By default in pentaho 5.x version servers it is disabled.

Un comment below code in plugin.spring.xml file

<bean id="Print" class="org.pentaho.jpivot.proxies.ProxyPrintServlet"/>

Location of the file is :

<YourDrivePath>/biserver-ce/pentaho-solutions/system/pentaho-jpivot-plugin

NOTE : Once you enable the code, stop the BI server and start again. [Bz it is a configuration file and changes will be affected iff you restart the server.]

Test: In the xml file it was suggested to replace with fop-0.20.5, but I didnt do it instead just uncommented the code and tested which is worked as expected.. If you still unable to get export work , you might have to replace the specified jar file.

:-)

KirSQLite Flex AIR Database Manager Part 5

In this part of the tutorial well begin to read the structure of the opened SQLite database.

First of all, lets optimize the code we have right now. We can do that by putting some of the code from openDatabase() and newDatabase() functions into a separate function called parseDatabase(), which receives 2 parameters - the File object of the database and a boolean needCheck. The function basically opens the database and parses it. If needCheck is set to true, it also checks if this database exists before continuing.

private function parseDatabase(file:File, needCheck:Boolean = false):String {
var ret:String = "";
if (!needCheck || file.exists) {
if(!needCheck || notAlreadyOpen(file)){
var newDB:XML;
if (dbData.db.length() == 0) {
connection.open(file);
dbData = new XMLList(<root></root>);
newDB = <db/>
newDB.@label = file.name;
newDB.@numid = 1;
newDB.@isBranch = true;
newDB.@path = file.nativePath;
dbData[0].appendChild(newDB);
ret = "main";
}else
if (dbData.db.length() > 0) {
var newnum:int = dbData.db.length() + 1;
connection.attach("db"+newnum.toString(), file);
newDB = <db/>
newDB.@label = file.name;
newDB.@numid = newnum.toString();
newDB.@isBranch = true;
newDB.@path = file.nativePath;
dbData[0].appendChild(newDB);
ret = "db" + newnum.toString();
}}else {
Alert.show("Database already opened.", "Error");
}
}else {
Alert.show("File not found.", "Error");
}
return ret;
}

Now we can replace those repeating lines in newDatabase() and openDatabase() by this function.

You might have noticed that the function returns a string value. This value is the name of the newly created database in our connection object. We use this value to pass as a parameter when we call loadDataSchema() function - a function that is called right after parseDatabase() to load and parse the content of the database.

private function newDatabase():void {
var file:File = File.desktopDirectory.resolvePath("Untitled");
file.addEventListener(Event.SELECT, newSelect);
file.browseForSave("Choose where to save the database");
var newDB:XML;
var statement:SQLStatement = new SQLStatement();
function newSelect(evt:Event):void {
file.nativePath += ".db";
var n:String = parseDatabase(file);
loadDataSchema(n);
}
}

private function openDatabase():void {
var file:File = new File();
file.browseForOpen("Open database", [new FileFilter("Databases", "*.db"), new FileFilter("All files", "*")]);
file.addEventListener(Event.SELECT, openSelect);

function openSelect(evt:Event):void {
var n:String = parseDatabase(file, true);
loadDataSchema(n);
}
}

This is the part where it got tricky for me. To find out information about inner content of the databases such as tables and indices, we need to load a schema. In AIR this is done using loadSchema() method. However, the schema does not exist if the databse is empty. That is why we first load the schema to add 2 event listeners - one function is called if the operation was successful (the schema exists), and the other one will be called if there is an error (the schema does not exist).

We pass a bunch of parameters to the loadSchema() method, including the name of the database were loading and a Responder object containing references to success and error functions.

In the success function, well load the schema one more time, then read it using getSchemResult() method, and display the number of tables in the database. The schema needs to be loaded again before we read the results.

private function loadDataSchema(name:String):void {
if (name != "") {
connection.loadSchema(null, null, name, true, new Responder(schemaSuccess, schemaError));
function schemaSuccess(evt:SQLSchemaResult):void {
// Schema found! Now parsing:
connection.loadSchema(null, null, name, true);
var result:SQLSchemaResult = connection.getSchemaResult();
Alert.show("Schema found! Tables in this database: " + result.tables.length);
}
function schemaError(evt:SQLError):void {
Alert.show("Database is empty");
}
}
}

Now we can open databases and view how many tables it contains.

Full code:

<?xml version="1.0" encoding="utf-8"?>
<s:WindowedApplication xmlns:fx="http://ns.adobe.com/mxml/2009"
                       xmlns:s="library://ns.adobe.com/flex/spark"
                       xmlns:mx="library://ns.adobe.com/flex/mx" showStatusBar="false">
   
<s:menu>
<mx:FlexNativeMenu dataProvider="{windowMenu}" showRoot="false" labelField="@label" keyEquivalentField="@key" itemClick="menuSelect(event);" />
</s:menu>

<fx:Declarations>
<fx:XML id="windowMenu">
<root>
<menuitem label="Database">
<menuitem id="newdb" label="New" key="n" controlKey="true" />
<menuitem id="opendb" label="Open" key="o" controlKey="true" />
<menuitem label="Save" key="s" controlKey="true" />
<menuitem label="Save As.." key="s" controlKey="true" shiftKey="true" />
</menuitem>
<menuitem label="Table">
<menuitem label="Add" key="t" controlKey="true" />
<menuitem label="Edit" key="e" controlKey="true" />
<menuitem label="Delete"/>
</menuitem>
</root>
</fx:XML>
<fx:XMLList id="dbData">
</fx:XMLList>
<mx:ArrayCollection id="tableData">
</mx:ArrayCollection>
</fx:Declarations>

<fx:Script>
<![CDATA[
import flash.data.SQLConnection;
import flash.data.SQLResult;
import flash.data.SQLSchema;
import flash.data.SQLSchemaResult;
import flash.data.SQLStatement;
import flash.errors.SQLError;
import flash.events.Event;
import flash.events.SQLEvent;
import flash.filesystem.File;
import flash.net.FileFilter;
import flash.net.Responder;
import mx.controls.Alert;
import mx.events.FlexNativeMenuEvent;

private var connection:SQLConnection = new SQLConnection();

private function selectAllChange(evt:Event):void {
var i:int;
if (evt.currentTarget.selected) {
for (i = 0; i < tableData.length; i++) {
tableData[i].sel = true;
}
} else
if (!evt.currentTarget.selected) {
for (i = 0; i < tableData.length; i++) {
tableData[i].sel = false;
}
}
tableGrid.invalidateDisplayList();
tableGrid.invalidateList();
}

private function menuSelect(evt:FlexNativeMenuEvent):void {
(evt.item.@id == "newdb")?(newDatabase()):(void);
(evt.item.@id == "opendb")?(openDatabase()):(void);
}

private function newDatabase():void {
var file:File = File.desktopDirectory.resolvePath("Untitled");
file.addEventListener(Event.SELECT, newSelect);
file.browseForSave("Choose where to save the database");
var newDB:XML;
var statement:SQLStatement = new SQLStatement();
function newSelect(evt:Event):void {
file.nativePath += ".db";
var n:String = parseDatabase(file);
loadDataSchema(n);
}
}

private function openDatabase():void {
var file:File = new File();
file.browseForOpen("Open database", [new FileFilter("Databases", "*.db"), new FileFilter("All files", "*")]);
file.addEventListener(Event.SELECT, openSelect);

function openSelect(evt:Event):void {
var n:String = parseDatabase(file, true);
loadDataSchema(n);
}
}

private function loadDataSchema(name:String):void {
if (name != "") {
connection.loadSchema(null, null, name, true, new Responder(schemaSuccess, schemaError));
function schemaSuccess(evt:SQLSchemaResult):void {
// Schema found! Now parsing:
connection.loadSchema(null, null, name, true);
var result:SQLSchemaResult = connection.getSchemaResult();
Alert.show("Schema found! Tables in this database: " + result.tables.length);
}
function schemaError(evt:SQLError):void {
Alert.show("Database is empty");
}
}
}

private function parseDatabase(file:File, needCheck:Boolean = false):String {
var ret:String = "";
if (!needCheck || file.exists) {
if(!needCheck || notAlreadyOpen(file)){
var newDB:XML;
if (dbData.db.length() == 0) {
connection.open(file);
dbData = new XMLList(<root></root>);
newDB = <db/>
newDB.@label = file.name;
newDB.@numid = 1;
newDB.@isBranch = true;
newDB.@path = file.nativePath;
dbData[0].appendChild(newDB);
ret = "main";
}else
if (dbData.db.length() > 0) {
var newnum:int = dbData.db.length() + 1;
connection.attach("db"+newnum.toString(), file);
newDB = <db/>
newDB.@label = file.name;
newDB.@numid = newnum.toString();
newDB.@isBranch = true;
newDB.@path = file.nativePath;
dbData[0].appendChild(newDB);
ret = "db" + newnum.toString();
}}else {
Alert.show("Database already opened.", "Error");
}
}else {
Alert.show("File not found.", "Error");
}
return ret;
}

private function notAlreadyOpen(file:File):Boolean{
var r:Boolean = true;
for (var i:int = 0; i < dbData.db.length(); i++) {
if (file.nativePath == dbData.db[i].@path) {
r = false;
}
}
return r;
}
]]>
</fx:Script>

<s:HGroup gap="0" width="100%" height="100%">
<s:VGroup width="200" height="100%" gap="0">
<mx:Tree width="100%" height="100%" dataProvider="{dbData}" showRoot="false" labelField="@label"/>
</s:VGroup>
<s:VGroup width="100%" height="100%" gap="0">
<mx:TabNavigator width="100%" height="100%" paddingTop="0">
<s:NavigatorContent label="Table contents">
<s:VGroup width="100%" height="100%" gap="0">
<mx:HBox width="100%" height="30" paddingLeft="8" paddingTop="6">
<mx:CheckBox label="Select all" change="selectAllChange(event);" />
<s:Button label="Delete selected"/>
</mx:HBox>
<mx:AdvancedDataGrid id="tableGrid" width="100%" height="100%" dataProvider="{tableData}" editable="true">
<mx:columns>
<mx:AdvancedDataGridColumn headerText=" " width="30" sortable="false" draggable="false" resizable="false" editable="false">
<mx:itemRenderer>
<fx:Component>
<mx:Box width="30" horizontalAlign="center">
<mx:CheckBox selected="@{data.sel}" />
</mx:Box>
</fx:Component>
</mx:itemRenderer>
</mx:AdvancedDataGridColumn>
<mx:AdvancedDataGridColumn dataField="idnum" headerText="ID" editable="false" />
<mx:AdvancedDataGridColumn dataField="firstname" headerText="First name" />
<mx:AdvancedDataGridColumn dataField="lastname" headerText="Last name" />
<mx:AdvancedDataGridColumn dataField="age" headerText="Age"/>
</mx:columns>
</mx:AdvancedDataGrid>
</s:VGroup>
</s:NavigatorContent>
<s:NavigatorContent label="Edit columns">

</s:NavigatorContent>
<s:NavigatorContent label="Query">

</s:NavigatorContent>
</mx:TabNavigator>
</s:VGroup>
</s:HGroup>

</s:WindowedApplication>

Thanks for reading!

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