Edit or add flow variables using java code. The node is analogous to the Java Snippet node: In the central panel, added java code to add or modify variables. The variables available at the input are listed on the left.
It is also possible to use external java libraries (that is, libraries that are not part of java boot classpath). In order to include such external jar or zip files, add their location in the "Additional Libraries" tab using the control buttons.
You can define reusable templates with the "Create templates..." button. Templates are stored in the users workspace by default and can be accessed via the "Templates" tab.
Options
Popular Predecessors
CSV Writer5 %Extract Context Properties3 %- Table Row to Variable Loop Start2 %
CSV Reader2 %File Reader2 %Excel Writer (XLS)2 %- Merge Variables2 %
- SDF Writer2 %
- Boolean Input (legacy)2 %
Variable Loop End1 %List Files1 %- Variable Creator1 %
- Extract Table Dimension< 1 %
Table Row to Variable< 1 %- Column Filter (legacy)< 1 %
- Counting Loop Start< 1 %
Date Input (legacy)< 1 %- Java Edit Variable< 1 %
- CSV Writer< 1 %
- Table Writer< 1 %
- Constant Value Column< 1 %
- Sorter< 1 %
Excel Reader (XLS)< 1 %- Excel Writer< 1 %
- Extract Context Properties< 1 %
- URI Port to Variable< 1 %
CASE Switch Variable (Start)< 1 %Flow Variable End IF< 1 %- Path to String (Variable)< 1 %
Scorer< 1 %- Missing Value< 1 %
- Python Edit Variable (legacy)< 1 %
- Send Email< 1 %
Excel Sheet Appender (XLS)< 1 %- String Configuration< 1 %
- Joiner< 1 %
- Configurable IF/CASE Switch (Flow Variable Value)< 1 %
- R View (Table)< 1 %
- Concatenate< 1 %
Column Rename< 1 %- String to Path (Variable)< 1 %
- Configurable IF/CASE Switch< 1 %
- Extract Variables (Database)< 1 %
- Table Creator< 1 %
- Column Resorter< 1 %
- Statistics< 1 %
- Boolean Configuration< 1 %
- File Upload Widget< 1 %
- Integer Widget< 1 %
- Table Row to Variable< 1 %
- Delete Files (legacy)< 1 %
Database Connection Table Reader< 1 %- Column Rename (Regex)< 1 %
- Column Filter< 1 %
- String Manipulation (Variable)< 1 %
- Rule Engine Variable< 1 %
- Generic JavaScript View (JavaScript)< 1 %
Integer Input (legacy)< 1 %Workflow Writer< 1 %- Column Expressions< 1 %
- Table Column to Variable< 1 %
- Slider Widget< 1 %
- Loop End< 1 %
- Generic Loop Start< 1 %
Variable to Table Row< 1 %Database SQL Executor< 1 %Loop End< 1 %Recursive Loop End< 1 %- Reference Row Filter< 1 %
- End IF< 1 %
- Java Snippet (simple)< 1 %
- File Upload (legacy)< 1 %
Table Reader< 1 %- String to Number< 1 %
JSON Writer< 1 %- TIBCO Spotfire File Writer< 1 %
- Excel Reader< 1 %
- Create Temp Folder< 1 %
Table Row To Variable Loop Start< 1 %Counting Loop Start< 1 %- Lag Column< 1 %
Joiner< 1 %- Row Sampling< 1 %
- Value Counter< 1 %
- Math Formula< 1 %
- Credentials Input (legacy)< 1 %
- Date&Time Input (legacy)< 1 %
- Double Input (legacy)< 1 %
- Variable Expressions< 1 %
- Single Selection Configuration< 1 %
- Value Selection Configuration< 1 %
- Text Output Widget (legacy)< 1 %
Flow Variable IF Switch< 1 %Flow Variable IF Switch (Flow Variable Value)< 1 %- Read Variables< 1 %
- Catch Errors (Var Ports)< 1 %
- Try (Variable Ports)< 1 %
- Fuzzy Rule Predictor< 1 %
- Column Name Extractor< 1 %
Row Splitter (deprecated)< 1 %Row Filter (deprecated)< 1 %- Pivot< 1 %
- Column Splitter< 1 %
- SDF Reader< 1 %
- External Tool< 1 %
- Math Formula (Variable)< 1 %
XLS Reader< 1 %- Value Filter (legacy)< 1 %
- Column Selection (legacy)< 1 %
- Explorer Browser< 1 %
Excel Reader (XLS)< 1 %- Credentials Configuration< 1 %
- Parquet Writer< 1 %
- Refresh Button Widget< 1 %
- Create Directory (legacy)< 1 %
- URL to File Path (Variable)< 1 %
- Wait...< 1 %
- Catch Errors (Data Ports)< 1 %
- Catch Errors (Generic Ports)< 1 %
- Active Branch Inverter< 1 %
- Extract Variables (Data)< 1 %
SQL Extract< 1 %- Java Snippet< 1 %
- Chunk Loop Start< 1 %
- Column List Loop Start< 1 %
- Group Loop Start< 1 %
Recursive Loop Start (2 ports)< 1 %Recursive Loop Start< 1 %- SVM Predictor< 1 %
- Reference Row Splitter< 1 %
- GroupBy< 1 %
- String Manipulation< 1 %
- Rule-based Row Filter< 1 %
- Rule-based Row Splitter< 1 %
CASE Switch Variable (End)< 1 %- Empty Table Creator< 1 %
- Java Edit Variable (simple)< 1 %
- Integer Input (legacy)< 1 %
- String Input (legacy)< 1 %
- Single Selection (legacy)< 1 %
- Parameter Optimization Loop Start< 1 %
Double Input (legacy)< 1 %String Input (legacy)< 1 %- R Source (Table)< 1 %
Extract Date&Time Fields< 1 %- RDKit Salt Stripper< 1 %
Table Column to Variable< 1 %- Date&Time Configuration< 1 %
- Local File Browser Configuration< 1 %
- Integer Configuration< 1 %
- Text Output (legacy)< 1 %
- File Chooser (legacy)< 1 %
- Boolean Widget< 1 %
- Date&Time Widget< 1 %
- String Widget< 1 %
- Column Selection Widget< 1 %
- Single Selection Widget< 1 %
- Table Difference Checker< 1 %
- Variable Loop End< 1 %
- Scorer< 1 %
- Duplicate Row Filter< 1 %
- CASE Switch End< 1 %
- CASE Switch Start< 1 %
- Math Formula (Multi Column)< 1 %
- Create File/Folder Variables< 1 %
- List Files/Folders< 1 %
- Python Source (legacy)< 1 %
- DB Merge< 1 %
- Container Input (Variable)< 1 %
- Capture Workflow Start< 1 %
- Variable to Table Row< 1 %
- Delete Files/Folders< 1 %
Input File< 1 %- PIA Compiler< 1 %
- Zip Files (legacy)< 1 %
Table Row to Variable< 1 %Concatenate (Optional in)< 1 %- Ungroup< 1 %
- Create Temp Dir (legacy)< 1 %
XLS Writer< 1 %Python Edit Variable< 1 %Dummy Input (legacy)< 1 %- GET Request< 1 %
XLS Formatter (apply)< 1 %- Table Row To Variable Run-for-time Loop Start< 1 %
- Filter Apply< 1 %
- Destroy Spark Context< 1 %
- OpenBabel< 1 %
Container Input (Variable)< 1 %- Tree Ensemble Learner< 1 %
- Extract Missing Value Cause< 1 %
- Remote SDF Writer< 1 %
Flow Variable IF Switch (Flow Variable Value)< 1 %- Copy/Move Files (legacy)< 1 %
- Create File Name (legacy)< 1 %
Database Connection Table Writer< 1 %Database Writer< 1 %Database Connector< 1 %Variable Condition Loop End< 1 %Random Forest Predictor< 1 %Cell Replacer< 1 %- Rule Engine Variable (Dictionary)< 1 %
- Parallel Chunk End< 1 %
- Line Chart (JFreeChart)< 1 %
- Shapefile writer< 1 %
- Quit WebDriver< 1 %
- Download (legacy)< 1 %
- String to URI< 1 %
- URI to String< 1 %
Table Column to Variable< 1 %- CSV Reader< 1 %
- Column Combiner< 1 %
- String Replacer< 1 %
- Amazon S3 File Picker (legacy)< 1 %
- MySQL Connector< 1 %
- Java Snippet Row Filter< 1 %
- Column Selection Configuration< 1 %
- Table to JSON< 1 %
- Date&Time to String< 1 %
- String to Date&Time< 1 %
- Create Date&Time Range< 1 %
- Moving Aggregator< 1 %
- Genentech Settings< 1 %
Table Column to Variable< 1 %Image Writer (Port)< 1 %Database Reader< 1 %Database Update< 1 %Database Drop Table< 1 %- X-Aggregator< 1 %
- X-Partitioner< 1 %
- Polynomial Regression Learner< 1 %
- Random Forest Learner< 1 %
- Column Auto Type Cast< 1 %
- Column Renamer (Dictionary)< 1 %
- Double to Integer< 1 %
- RowID< 1 %
Merge Variables< 1 %- Parallel Chunk Start< 1 %
- String Matcher< 1 %
- Container Input (Table)< 1 %
- R Snippet< 1 %
- Table to R< 1 %
- Molecule to CDK< 1 %
- Database To Variable (Legacy)< 1 %
- Loop End (Column Append)< 1 %
- Numeric Scorer< 1 %
- Add Empty Rows< 1 %
- Cell Splitter< 1 %
- One to Many (PMML)< 1 %
- Table Transposer< 1 %
- Renderer to Image< 1 %
- DB Query Reader< 1 %
- DB Query Extractor< 1 %
- Counter Generation< 1 %
- Google Sheets Reader< 1 %
- Value Selection Widget< 1 %
JSON Reader< 1 %MongoDB Writer< 1 %- Testflow Configuration< 1 %
Table Row To Variable Loop Start< 1 %- DB Writer< 1 %
- Create Folder< 1 %
- Column Filter Configuration< 1 %
- List Box Widget< 1 %
Python Script (2⇒1)< 1 %- POST Request< 1 %
XGBoost Tree Ensemble Learner< 1 %- XML Row Combiner< 1 %
Input Directory< 1 %- Input Files< 1 %
- Output Folder< 1 %
- Join Layout< 1 %
- Create Collection Column< 1 %
- List Remote Files (legacy)< 1 %
- Unzip Files (legacy)< 1 %
- Breakpoint< 1 %
- Try (Data Ports)< 1 %
Table Writer< 1 %Interval Loop Start< 1 %Generic Loop Start< 1 %- PNN Learner (DDA)< 1 %
- PNN Predictor< 1 %
- MultiLayerPerceptron Predictor< 1 %
- RProp MLP Learner< 1 %
Tree Ensemble Learner< 1 %Column Appender< 1 %- Create Table Structure< 1 %
- Cross Joiner< 1 %
- Table Validator (Reference)< 1 %
- Partitioning< 1 %
- Rule Engine< 1 %
- Empty Table Switch< 1 %
CASE Switch Data (End)< 1 %- IF Switch< 1 %
- Cache< 1 %
- Color Manager< 1 %
- Molecule Type Cast< 1 %
SQLite Connector< 1 %Excel Reader (XLS)< 1 %Excel Sheet Appender (XLS)< 1 %- Java Snippet Row Splitter< 1 %
- TF< 1 %
- Tag Cloud< 1 %
- External Tool (Labs)< 1 %
Google Authenticator (API Key)< 1 %- Value Selection (legacy)< 1 %
- Table View (JavaScript)< 1 %
- JSON Path< 1 %
- Rotation 2D< 1 %
- Image to Labeling< 1 %
Python Script (1⇒1)< 1 %List Box Input (legacy)< 1 %- Time Generator (legacy)< 1 %
- String to Date/Time (legacy)< 1 %
- RDKit From Molecule< 1 %
- WebDriver Factory< 1 %
IF Switch (Flow Variable Value)< 1 %Flow Variable CASE Switch< 1 %- Table Row To Variable Run-to-time Loop Start< 1 %
Binary Objects to Files< 1 %- Port to URI< 1 %
- HTTP Connection (legacy)< 1 %
- URL to File Path< 1 %
Variable to Table Row< 1 %Image Writer (Table Column)< 1 %Database Delete< 1 %Database Row Filter< 1 %Database Table Selector< 1 %Model Writer< 1 %Loop End (2 ports)< 1 %- Decision Tree Predictor< 1 %
- Linear Regression Learner< 1 %
Logistic Regression Learner< 1 %- PCA< 1 %
Gradient Boosted Trees Predictor< 1 %- Tree Ensemble Learner (Regression)< 1 %
- Simple Regression Tree Learner< 1 %
- Auto-Binner< 1 %
String To Number< 1 %Double To Int< 1 %- Reference Column Filter< 1 %
- Constant Value Column Filter< 1 %
- Nominal Value Row Filter< 1 %
- Number Rounder< 1 %
- Unpivot< 1 %
- Timer Info< 1 %
- Interactive Table (legacy)< 1 %
- Table to Spark< 1 %
- Spark Predictor (Regression)< 1 %
- Spark Predictor (MLlib)< 1 %
- Spark Joiner< 1 %
- Parallel Chunk End (multi port)< 1 %
MySQL Connector< 1 %PostgreSQL Connector< 1 %Microsoft SQL Server Connector< 1 %- DB Connection Closer< 1 %
- DB SQL Executor< 1 %
- DB Transaction End< 1 %
- TimeDelay Loop Start< 1 %
- Autocomplete Text Widget< 1 %
Table to PDF< 1 %- Table Indexer< 1 %
Excel Writer (XLS)< 1 %- Double Configuration< 1 %
- CSS Editor< 1 %
- List Box Input (legacy)< 1 %
- Slider Input (legacy)< 1 %
- Columns to JSON< 1 %
MongoDB Update< 1 %- Network Viewer (local)< 1 %
File Upload (legacy)< 1 %- R to Table< 1 %
- Data to Report (BIRT)< 1 %
- Date&Time Difference< 1 %
- Extract Time Window (legacy)< 1 %
- XGBoost Predictor (Regression)< 1 %
- Molecular Properties< 1 %
- Fingerprints< 1 %
- Wait< 1 %
- Don't Save Start (3 Ports)< 1 %
- KNIME URI Resolver (Variable)< 1 %
- Load text-based files< 1 %
- Write To Excel Template (deprecated)< 1 %
- Switch Tab< 1 %
- Binary Objects to Files< 1 %
- Inject Variables (Data)< 1 %
- ARFF Writer< 1 %
- File Reader< 1 %
- Fixed Width File Reader< 1 %
- k-Means< 1 %
- Gradient Boosted Trees Learner< 1 %
- Workflow Combiner< 1 %
- Amazon Authenticator< 1 %
- DB Connector< 1 %
- DB Insert< 1 %
- Model Loop Start< 1 %
- Boosting Learner Loop Start< 1 %
- Read Excel Sheet Names< 1 %
- Java IF (Table)< 1 %
- Scatter Plot (JavaScript)< 1 %
- Credentials Widget< 1 %
- String to JSON< 1 %
- Python Script (legacy)< 1 %
- Python View (legacy)< 1 %
- Table to HTML String< 1 %
Views
- This node has no views
Workflows
00 Main MenuKNIME Hub- 00 Main MenuKNIME Hub
- 00_Guided_Labeling_for_Document_Classification_(legacy)KNIME Hub
- 00_Visual_Analysis_of_Sales_Data(2)KNIME Forum
00_xplan sf dbconv-insert via xport-AccountKNIME Hub- Show all 1083 workflows
Links
- KNIME E-Learning Course: Creation and usage of Flow Variables in a KNIME workflowwww.knime.com/knime-introductory-course/chapter7/section1/creation-and-usage-of-flow-variables
- Loop until previous date is not weekends and holidaysby JanDuo on 2020-08-26forum.knime.com/p/100780
- How to open result of workflowby qqilihq on 2018-08-02forum.knime.com/p/46080
- Execute failed: Cannot read file “knime_container_20200301_1905559478659870280.bin.snappy”by qqilihq on 2020-03-01forum.knime.com/p/83021
- Popup Window in Workflowby qqilihq on 2021-01-29forum.knime.com/p/114555
- Show all 8 links
Developers
You want to see the source code for this node? Click the following button and we’ll use our super-powers to find it for you.