pentaho | 易学教程

JavaScript Error in Pentaho - Cannot call method “toUpperCase” of null

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问题 // Sets all the letters as uppercase var str = ae_a_asset_e$manufacture_code.toUpperCase(); var str2 = ae_a_asset_e$serial_no.toUpperCase(); var str3 = ae_a_asset_e$manu_part_number.toUpperCase(); var str4 = ae_a_asset_e$region_code.toUpperCase(); var str5 = ae_a_asset_e$fac_id.toUpperCase(); Any idea how to fix this? I would think there would have to be a way to say if value = null then don't worry about it. 回答1: First you have to think whether it is correct that some values are null or not,

如何用开源bi，打造自己的轻量级bi系统

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【推荐】2019 Java 开发者跳槽指南.pdf(吐血整理) >>> 对于程序员来说，开源的东西都是好的，别的不说，因为可以自己自己随意开发，毕竟每个人都喜欢自己写的代码嘛，也或者，就是不想花钱哈哈哈哈（扎心了）就拿最近很火的BI来说吧，BI分两种：开源BI和商用BI，说起开源BI就是有爱又恨，这一切都要从微软带起了商业风说起.... 我在网上搜到了一下2018年BI的市场占有率：说到软件，可能第一反应就是国外的好，于是就先尝试了国外的开源BI。第一个接触的开源BI是pentaho，实在是太臃肿了，花了半年时间没有搞定，bug又多，修改不了。第二个是superset，可视化很强大，不过需要安装Linux，对于非技术人员很不友好，毕竟现在的BI都主打自助式。第三个开源BI就是JasperReports了，这是程序员最受欢迎、最常用的开源报表工具，常和ireport一起搭配使用，不过它有两个致命的缺点：需要学习编程，不支持多源数据源，这无疑是把自己未来的路给封死了....使用了这么多之后，我们决定试试国内的开源BI。国内的开源BI很多都是假开源，阉割很多核心功能，或者是商业用就要收费。而BI产品又很贵，在商业bi用的比较多的就是tableau，sever价格10万，10个账号，增加一个账号需要1万。由于最近要给公司实施BI，和工程师聊过，如果自己开发一套BI的话，工作量非常大

How to Reload CDA and Mondrian cache in Pentaho CE 4.8?

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问题 I'm currently stuck in some performance issue for my Dashboard. I've created a dashboard in Pentaho Community edition 4.8. For my charts, using the SQL and MDX (Mondrian) queries. My Problem is that, When I first time open my dashboards after clearing cda and Mondrian cache. It take 50 secs to load. But next time it took less then 10 secs. I know the method to clear CDA and Mondrain cache automatically. How to reload the CDA and Mondrian schema cache from back-end (with out opening the

Dynamic naming of excel sheets using pentaho kettle

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问题 I have a transformation with sequential steps of writing data from a table input step to Excel sheets using Excel writer step. The sheet names are basically provided in the sheet name box in content tab which was reflecting in the spreadsheet. Instead of per-defining the sheet name, is there any possibility that the sheet names can be dynamically taken from column value of the table. Ex: say there is a table section and columns section_name , stud_name so i need to show section names as excel

Run PDI Jobs using Web Services

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问题 I have a job created using spoon and imported to the DI repository. Without scheduling it using PDI job scheduler how can I run PDI Job on a Data Integration Server using REST web services? So that I can call it whenever I want. 回答1: Before beginning these steps, please make sure that your Carte server (or Carte server embedded in the DI server) is configured to connect to the repository for REST calls. The process and description can be found on the wiki page. Note that the repositories.xml

How to check connection of cassandra with pentaho data integrator

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问题 I'm trying to load data from Oracle table to Cassandra table by using Pentaho Data Integration 5.1(Community Edition). But I'm not getting whether connection has been established between oracle and cassandra. I'm using Cassandra 2.2.3 and Oracle 11gR2. I've added following jars in lib folder of data-integration --cassandra-thrift-1.0.0 --apache-cassandra-cql-1.0.0 --libthrift-0.6.jar --guava-r08.jar --cassandra_driver.jar Please anyone can help me to figure out how to check whether connection

Clone and Build Pentaho Kettle

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问题 Sorry for basic question, but I have been trying for a while and cannot get anywhere with this. Any one have experience clone the Pentaho-kettle project and import it into eclipse? I follow the instruction from https://github.com/pentaho/pentaho-kettle. I did the following cd pentaho-kettle ant clean-all resolve create-dot-classpath Then I go into eclipse and Import Existing Project into workspace. Note that I am importing from the root folder. Should I include the option scan the nested

How to uncompress and import a .tar.gz file in kettle?

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问题 I am trying to figure out how to create a job/transformation to uncompress and load a .tar.gz file. Does anyone have any advice for getting this to work? 回答1: you want to read a text file that is compressed? Just specify the file in the text file input step in the transformation - and specify the compression (GZip). Kettle can read directly from compressed files. If you do need the file uncompressed then use a job step - not sure if there is a native uncompress, but if not just use a shell

Pentaho Frame size (17727647) larger than max length (16384000)!

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问题 In pentaho , when I run a cassandra input step that get around 50,000 rows , I get this exception : Is there a way to control the query result size in pentaho ? or is there a way to stream the query result and not get it all in bulk? 2014/10/09 15:14:09 - Cassandra Input.0 - ERROR (version 5.1.0.0, build 1 from 2014-06-19_19-02-57 by buildguy) : Unexpected error 2014/10/09 15:14:09 - Cassandra Input.0 - ERROR (version 5.1.0.0, build 1 from 2014-06-19_19-02-57 by buildguy) : org.pentaho.di

How to insert an image on Pentaho dashboard with condition?

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问题 I know how to insert an image using add image avaible on Layout Panel or using HTML. However I want to make a condition : If the image is not avaible or doesn't exist, there is a default image I want to display. So I think I need to do it with js function. What is the best way for it? 回答1: you can use image tag in html for that. <img id="img" src="SomeImage.jpg" onerror="this.onerror=null; this.src=default.png" alt="" width="100" height="120"> 来源： https://stackoverflow.com/questions/57678223