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 Successors
Variable Loop End3 %- String to Path (Variable)3 %
Row Filter (deprecated)2 %- Merge Variables2 %
- R Snippet1 %
- R to Table1 %
PMML Writer< 1 %- CASE Switch Start< 1 %
CASE Switch Data (Start)< 1 %Line Reader< 1 %- DB Query Reader< 1 %
- Excel Writer< 1 %
- String Input (legacy)< 1 %
Database Table Connector< 1 %Model Writer< 1 %- Java Snippet< 1 %
Flow Variable IF Switch (Flow Variable Value)< 1 %SQL Inject< 1 %- String Manipulation (Variable)< 1 %
- Java Edit Variable< 1 %
- CASE Switch End< 1 %
- Google Sheets Reader< 1 %
- File Upload (legacy)< 1 %
- k-Means< 1 %
- List Files/Folders< 1 %
- CSV Reader< 1 %
Read Excel Sheet Names (XLS)< 1 %- Wait...< 1 %
- Catch Errors (Var Ports)< 1 %
- Write Variables< 1 %
Column Rename< 1 %CASE Switch Model (Start)< 1 %- Send Email< 1 %
- DB Query Injector< 1 %
- GET Request< 1 %
- k-Medoids< 1 %
- Punctuation Erasure< 1 %
- Configurable End IF/CASE< 1 %
PMML Reader< 1 %- Counting Loop Start< 1 %
Variable Condition Loop End< 1 %- Container Input (File)< 1 %
- Unzip Files (legacy)< 1 %
- Variable to Table Row< 1 %
Database Row Filter< 1 %- File Reader< 1 %
Counting Loop Start< 1 %- Variable Loop End< 1 %
- Table Row to Variable Loop Start< 1 %
- Microsoft SQL Server Connector< 1 %
- DB SQL Executor< 1 %
Table to PDF< 1 %Excel Writer (XLS)< 1 %- Excel Reader< 1 %
- External Tool (Labs)< 1 %
- JSON Reader< 1 %
- Create Date&Time Range< 1 %
Flow Variable End IF< 1 %Variable to Table Row< 1 %- CSV Writer< 1 %
- File Reader (Complex Format)< 1 %
Model Reader< 1 %- Chunk Loop Start< 1 %
- Group Loop Start< 1 %
- Constant Value Column< 1 %
- GroupBy< 1 %
Joiner< 1 %- Missing Value< 1 %
- Column Splitter< 1 %
- Ungroup< 1 %
- Rule-based Row Filter< 1 %
Parquet Writer< 1 %- Explorer Writer< 1 %
XLS Writer< 1 %Excel Reader (XLS)< 1 %- External SSH Tool< 1 %
- String Configuration< 1 %
- Inject Variables (Database)< 1 %
Loop End< 1 %- Column Aggregator< 1 %
- Normalizer< 1 %
H2O MOJO Writer< 1 %- Math Formula< 1 %
- Credentials Configuration< 1 %
- Generic JavaScript View (JavaScript)< 1 %
- Labeling Filter< 1 %
MongoDB Reader< 1 %- Python Source (legacy)< 1 %
- POST Request< 1 %
XLS Formatter (apply)< 1 %- TIBCO Spotfire File Writer< 1 %
Database Writer< 1 %Line Reader< 1 %File Reader< 1 %List Files< 1 %Recursive Loop End (2 ports)< 1 %- Recursive Loop End< 1 %
- RProp MLP Learner< 1 %
- Concatenate< 1 %
- Column Resorter< 1 %
- String Replacer< 1 %
CASE Switch Variable (Start)< 1 %- SDF Reader< 1 %
- Integer Configuration< 1 %
- Text Output Widget (legacy)< 1 %
Python Source< 1 %- Python Script (legacy)< 1 %
Input Directory< 1 %- Split Collection Column< 1 %
- Create Directory (legacy)< 1 %
- URL to File Path (Variable)< 1 %
- Zip Files (legacy)< 1 %
- Catch Errors (Data Ports)< 1 %
- Create File Name (legacy)< 1 %
- Table Row to Variable< 1 %
Table Row To Variable Loop Start< 1 %Variable to Table Row< 1 %Database Sampling< 1 %- Variable Condition Loop End< 1 %
- Gradient Boosted Trees Learner< 1 %
- Reference Row Filter< 1 %
- Numeric Row Splitter< 1 %
- Rule Engine< 1 %
- Rule-based Row Splitter< 1 %
- Ruleset Editor< 1 %
- End IF< 1 %
- Extract Table Dimension< 1 %
- PostgreSQL Connector< 1 %
- SQLite Connector< 1 %
- DB Table Selector< 1 %
- Empty Table Creator< 1 %
- Math Formula (Variable)< 1 %
XLS Reader< 1 %- Java IF (Table)< 1 %
- Create File/Folder Variables< 1 %
- Path to String (Variable)< 1 %
- Create Temp Folder< 1 %
- Google Analytics Query (legacy)< 1 %
- Table to R< 1 %
- Moving Aggregator< 1 %
- XML Row Combine and Write< 1 %
- XML Reader< 1 %
Flow Variable IF Switch< 1 %Flow Variable IF Switch (Flow Variable Value)< 1 %- Read Variables< 1 %
- KNIME URI Resolver (Variable)< 1 %
- Write To Excel Template (deprecated)< 1 %
Binary Objects to Files< 1 %- SSH Connection (legacy)< 1 %
- String to URI< 1 %
- Breakpoint< 1 %
- Try (Variable Ports)< 1 %
Variable to Table Column< 1 %- Variable to Table Column< 1 %
- Inject Variables (Data)< 1 %
Table Column to Variable< 1 %- Variable to Credentials< 1 %
CSV Writer< 1 %Database Reader< 1 %- Image Writer (Port)< 1 %
- PMML Writer< 1 %
- Table Reader< 1 %
- Table Writer< 1 %
List Files< 1 %Table Reader< 1 %- Table Creator< 1 %
- Loop End< 1 %
- Interval Loop Start< 1 %
- Column List Loop Start< 1 %
- Generic Loop Start< 1 %
Recursive Loop End< 1 %- Polynomial Regression Learner< 1 %
Scorer< 1 %- Add Empty Rows< 1 %
Concatenate (Optional in)< 1 %- Column Combiner< 1 %
- Column Rename (Regex)< 1 %
- Create Table Structure< 1 %
- Column Filter< 1 %
Row Splitter (deprecated)< 1 %- Partitioning< 1 %
- String Manipulation< 1 %
- Rule Engine Variable< 1 %
CASE Switch Variable (End)< 1 %- Empty Table Switch< 1 %
- IF Switch< 1 %
- SDF Writer< 1 %
SQLite Connector< 1 %- MySQL Connector< 1 %
- DB Connector< 1 %
- Line Plot (Plotly)< 1 %
- Column Expressions< 1 %
- Variable Expressions< 1 %
- Line Chart (JFreeChart)< 1 %
Read XLS Sheet Names< 1 %Excel Writer (XLS)< 1 %- Java Edit Variable (simple)< 1 %
- Java Snippet Row Splitter< 1 %
- Category to Class< 1 %
Stop Word Filter< 1 %- Create Folder< 1 %
- Transfer Files< 1 %
- Date&Time Configuration< 1 %
- Date&Time Input (legacy)< 1 %
- Column Selection (legacy)< 1 %
- Slider Widget< 1 %
- Single Selection Widget< 1 %
- MongoDB Connector< 1 %
- R View (Table)< 1 %
- Webpage Retriever< 1 %
- Date&Time Difference< 1 %
- Date&Time-based Row Filter< 1 %
- Moving Average< 1 %
- Call Workflow (Row Based)< 1 %
- XPath< 1 %
- HTTP Retriever< 1 %
- Navigate< 1 %
- ZipLoopStart< 1 %
- Read FCS Files< 1 %
- Chemical Terms< 1 %
- MolConverter< 1 %
- Port to URI< 1 %
- Fixed Width File Reader< 1 %
- X-Aggregator< 1 %
- Column Comparator< 1 %
- Constant Value Column Filter< 1 %
- Nominal Value Row Splitter< 1 %
- Joiner< 1 %
- String Splitter (Regex)< 1 %
- Data Generator< 1 %
- Color Manager< 1 %
- Save Workflow< 1 %
- Spark SQL Query< 1 %
- Keras Dense Layer< 1 %
- Keras Network Learner< 1 %
- External Tool< 1 %
- Read Excel Sheet Names< 1 %
Date Input (legacy)< 1 %- List Box Input (legacy)< 1 %
Container Input (Variable)< 1 %- Table to JSON< 1 %
- JSON Path< 1 %
- JSON Transformer< 1 %
- JSON to Table< 1 %
- Python Edit Variable (legacy)< 1 %
- Date&Time Shift< 1 %
- Start WebDriver< 1 %
- Output File< 1 %
- Database List< 1 %
- Matrix Distributions< 1 %
- Message Slack User< 1 %
- Load Text Files< 1 %
- Advanced MolConverter< 1 %
- Create Collection Column< 1 %
- HTTP Connection (legacy)< 1 %
- ARFF Reader< 1 %
Database Connection Table Reader< 1 %Database SQL Executor< 1 %Database Looping< 1 %- Extract Context Properties< 1 %
- Fuzzy c-Means< 1 %
Decision Tree Learner< 1 %- Cell Splitter< 1 %
Number To String< 1 %String To Number< 1 %- Edit Numeric Domain< 1 %
- Reference Column Filter< 1 %
- Pivot< 1 %
- Cache< 1 %
- DB Connection Closer< 1 %
- DB Joiner< 1 %
- Aggregated Distance< 1 %
- String Matcher< 1 %
- Local File Browser Configuration< 1 %
- File Download (legacy)< 1 %
- Double Input (legacy)< 1 %
- Table View (JavaScript)< 1 %
- ROC Curve (JavaScript)< 1 %
- Scatter Plot (JavaScript)< 1 %
- String to JSON< 1 %
- Rotation 2D< 1 %
Python Script (1⇒1)< 1 %String Radio Buttons (legacy)< 1 %- R Source (Table)< 1 %
- R Source (Workspace)< 1 %
- R View (Workspace)< 1 %
- PUT Request< 1 %
- String to Date&Time< 1 %
XML Writer< 1 %- RDKit Fingerprint< 1 %
Find Elements< 1 %- Time Domain Features (TDF)< 1 %
- Window Slider< 1 %
- Benchmark End (Flow Variable)< 1 %
- Credential Variable Extractor< 1 %
- European PubMed Central Advanced Search< 1 %
- List Folders< 1 %
- Join Layout< 1 %
- MolImporter< 1 %
- List Remote Files (legacy)< 1 %
- Try (Data Ports)< 1 %
- Extract Variables (Data)< 1 %
- Read Images< 1 %
CSV Reader< 1 %Database Query< 1 %Database Drop Table< 1 %Database Table Creator< 1 %Extract Context Properties< 1 %Interval Loop Start< 1 %- Numeric Scorer< 1 %
- Auto-Binner< 1 %
- Nominal Value Row Filter< 1 %
String To Number (PMML)< 1 %- Rank< 1 %
- RowID< 1 %
- String Manipulation (Multi Column)< 1 %
- Table Transposer< 1 %
- Value Counter< 1 %
- Interactive Table (legacy)< 1 %
- Secured HttpFS Connection (legacy)< 1 %
- Spark Column Rename (Regex)< 1 %
- Spark DataFrame Java Snippet< 1 %
- Spark DataFrame Java Snippet (Source)< 1 %
Vertica Connector< 1 %- Capture Workflow End< 1 %
- Amazon S3 Connection (legacy)< 1 %
- DB Column Rename (Regex)< 1 %
- TimeDelay Loop End< 1 %
- LIBSVMLearner< 1 %
- Index Query< 1 %
Excel Reader (XLS)< 1 %Excel Reader (XLS)< 1 %Excel Sheet Appender (XLS)< 1 %- Frequency Filter< 1 %
Punctuation Erasure< 1 %Strings To Document< 1 %- Decompress Files< 1 %
- Delete Files/Folders< 1 %
- Boolean Configuration< 1 %
- Single Selection Configuration< 1 %
- CSS Editor< 1 %
- Integer Input (legacy)< 1 %
- Scorer (JavaScript)< 1 %
- File Download Widget< 1 %
JSON Writer< 1 %- Image Generator< 1 %
Network Writer< 1 %- Parameter Optimization Loop End< 1 %
Python Edit Variable< 1 %- Python Object Writer (legacy)< 1 %
R Model Writer< 1 %- Date&Time Part Extractor< 1 %
- Extract Time Window (legacy)< 1 %
- String to Date/Time (legacy)< 1 %
- Twitter Search< 1 %
- Fingerprint Similarity< 1 %
WebDriver Factory< 1 %Send Keys< 1 %- Wait< 1 %
- Window Function< 1 %
Write MDB< 1 %Write Pharmacophore< 1 %- XLS Control Table from Cell Range< 1 %
- Remote SDF Writer< 1 %
- Genentech Settings< 1 %
- Index Loader< 1 %
- Input Files< 1 %
- Output Folder< 1 %
- Diversity Picker< 1 %
- PDB Reader< 1 %
- Compiled Model Predictor< 1 %
- Message Slack channel< 1 %
- TIBCO Spotfire Information Link Reader< 1 %
- Variable Timed Loop End< 1 %
- PIA Analysis< 1 %
- Binning Calculate< 1 %
- R Snippet< 1 %
- FileFilter< 1 %
- MascotAdapterOnline< 1 %
- MetaboliteAdductDecharger< 1 %
- MolExporter< 1 %
- XLS Coloured Writer< 1 %
- Delete Files (legacy)< 1 %
- Download (legacy)< 1 %
- FTP Connection (legacy)< 1 %
- HTTPS Connection (legacy)< 1 %
- Upload (legacy)< 1 %
- URI Port to Variable< 1 %
- URL to File Path< 1 %
- Catch Errors (Generic Ports)< 1 %
Variable to Table column< 1 %Variable to Table Column< 1 %- Table Column to Variable< 1 %
Table Row to Variable< 1 %Variable to Table Row< 1 %- Image to Table< 1 %
Image Writer (Table Column)< 1 %Image Writer (Port)< 1 %- ARFF Writer< 1 %
Database Connection Table Writer< 1 %Database Delete< 1 %Database Update< 1 %SQL Extract< 1 %Database Table Selector< 1 %Database Connector< 1 %Parameterized Database Query< 1 %- Extract System Properties< 1 %
Simple File Reader< 1 %PMML Reader< 1 %Table Writer< 1 %- Variable Creator< 1 %
- Feature Selection Loop End< 1 %
- Feature Selection Loop Start (1:1)< 1 %
- Loop End (Column Append)< 1 %
Generic Loop Start< 1 %- Recursive Loop Start< 1 %
Recursive Loop Start< 1 %Table Row To Variable Loop Start< 1 %- X-Partitioner< 1 %
Naive Bayes Learner< 1 %- PNN Learner (DDA)< 1 %
- Hierarchical Clustering< 1 %
- Hierarchical Clustering (DistMatrix)< 1 %
- Hierarchical Cluster Assigner (local)< 1 %
- Decision Tree Learner< 1 %
- K Nearest Neighbor< 1 %
- Logistic Regression Learner< 1 %
Numeric Scorer< 1 %- Association Rule Learner< 1 %
Tree Ensemble Learner (Regression)< 1 %Random Forest Learner< 1 %Tree Ensemble Learner< 1 %- Random Forest Learner< 1 %
- Random Forest Learner (Regression)< 1 %
- Simple Regression Tree Learner< 1 %
- Distance Matrix Pair Extractor< 1 %
Cell Replacer< 1 %- Column Auto Type Cast< 1 %
Column Appender< 1 %- Column Name Extractor< 1 %
- Lag Column< 1 %
- Column Merger< 1 %
Linear Correlation< 1 %- Cross Joiner< 1 %
- Domain Calculator< 1 %
- Double to Integer< 1 %
- Equal Size Sampling< 1 %
- Normalizer (PMML)< 1 %
- Row Sampling< 1 %
- Sorter< 1 %
String Replace (Dictionary)< 1 %- Top k Row Filter< 1 %
- Unpivot< 1 %
- Renderer to Image< 1 %
- Rule-based Row Splitter (Dictionary)< 1 %
- Data Explorer< 1 %
- Statistics< 1 %
- Create Temp Dir (legacy)< 1 %
Merge Variables< 1 %- Timer Info< 1 %
- Impala Connector< 1 %
- HDFS Connector< 1 %
- Secured WebHDFS Connection (legacy)< 1 %
- Spark Predictor (Regression)< 1 %
- Spark GroupBy< 1 %
- Spark RDD Java Snippet (Sink)< 1 %
- Workflow Executor< 1 %
- Workflow Writer< 1 %
Amazon Athena Connector< 1 %- Amazon S3 File Picker (legacy)< 1 %
- Parallel Chunk Start< 1 %
MySQL Connector< 1 %PostgreSQL Connector< 1 %Microsoft SQL Server Connector< 1 %- Microsoft Access Connector< 1 %
- Oracle Connector< 1 %
- Snowflake Connector< 1 %
- DB Connection Extractor< 1 %
- DB Insert< 1 %
- DB Reader< 1 %
- DB Update< 1 %
- DB Writer< 1 %
- DB Row Filter< 1 %
- DB Query< 1 %
- Counter Generation< 1 %
- Random Number Assigner< 1 %
- Random Label Assigner< 1 %
- Random Item Inserter< 1 %
- Bit Vector Distances< 1 %
- Keras Network Writer< 1 %
- Keras Input Layer< 1 %
- TensorFlow Network Writer< 1 %
- Sunburst Chart (JavaScript)< 1 %
Table to HTML< 1 %- OpenBabel< 1 %
- Generic Web Service Client< 1 %
- DL4J Feedforward Learner (Classification) (legacy)< 1 %
- Math Formula (Multi Column)< 1 %
- HeatMap (JFreeChart)< 1 %
- Table Indexer< 1 %
Microsoft Authenticator (Deprecated)< 1 %- OSM Map to Image< 1 %
XLS Sheet Appender< 1 %Excel Sheet Appender (XLS)< 1 %- SMB Connector< 1 %
TIBCO File Writer< 1 %- SSH Connector< 1 %
- Java Snippet (simple)< 1 %
- Java Snippet Row Filter< 1 %
- Radar Plot Appender< 1 %
Tableau Writer (Hyper)< 1 %- NGram Creator< 1 %
- Tika Parser URL Input< 1 %
- Replacer< 1 %
- Snowball Stemmer< 1 %
- PDF Parser< 1 %
Document vector< 1 %- Document Vector< 1 %
- Strings to Document< 1 %
Weka Classifier Reader (3.7)< 1 %Weka Classifier Writer (3.7)< 1 %- String to Path< 1 %
- Google Analytics Connector (legacy)< 1 %
Google Authenticator (Deprecated)< 1 %Google Authenticator (API Key)< 1 %- Google Sheets Updater< 1 %
- Double Configuration< 1 %
- Text Output (legacy)< 1 %
- Boolean Input (legacy)< 1 %
- Credentials Input (legacy)< 1 %
- Multiple Selections (legacy)< 1 %
- Single Selection (legacy)< 1 %
- Value Selection (legacy)< 1 %
- Line Plot (JavaScript)< 1 %
- Column Filter Widget< 1 %
- Credentials Widget< 1 %
- Date&Time Widget< 1 %
- String Widget< 1 %
- JSON Row Combiner and Writer< 1 %
- Container Output (Table)< 1 %
- JSON Writer< 1 %
JSON Reader< 1 %- Gaussian Convolution< 1 %
- CLAHE< 1 %
- Image Resizer< 1 %
- Morphological Labeling Operations< 1 %
MongoDB Writer< 1 %- Parameter Optimization Loop Start< 1 %
Python Script (1⇒1)< 1 %- Python View (legacy)< 1 %
Multi Selection QuickForm (legacy)< 1 %Variable Output (legacy)< 1 %- Add Table to R< 1 %
- R to R< 1 %
- DELETE Request< 1 %
- SPARQL Executor< 1 %
- SPARQL Query< 1 %
- Modify Time Zone< 1 %
- Date/Time Shift (legacy)< 1 %
- Time Generator (legacy)< 1 %
XML Reader< 1 %- RDKit From Molecule< 1 %
- RDKit Substructure Filter< 1 %
- HTTP Result Data Extractor< 1 %
- Multipart Encoded HTTP Entity Creator< 1 %
Click< 1 %- WebDriver Factory< 1 %
- Find Elements< 1 %
- Synchronize< 1 %
Views
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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 1082 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
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