This version is modified for Image I/O with additional Image processing operators

Sample File Read-Write implementation

This example shows how to extend the AbstractFileInputOperator and AbstractFileOutputOperator from Malhar library to create a high performance application to copy files. There are two examples in the project:

1. FileIO: This application copies text file contents line by like to specified destination. The required properties for application are specified in src/main/resources/META-INF/properties-FileIO.xml.

2. ThroughputBasedFileIO: This application copies file contents block by block to specified destination. This application makes use of AbstractThroughputFileInputOperator from Malhar library. The required properties for application are specified in src/main/resources/META-INF/properties-ThroughputBasedFileIO.xml.

Follow these steps to run this application

Step 1: Update input and output file(s)/folder properties in your application properties file.

For Input location update property dt.operator.read.prop.directory

For Output location update property dt.operator.write.prop.filePath

Step 2: Build the code:

shell> mvn clean install

Upload the target/fileIO-1.0-SNAPSHOT.apa to the UI console if available or launch it from the commandline using apexcli.

Step 3: During launch use src/main/resources/META-INF/properties-*.xml as a custom configuration file; then verify that the output directory has the expected output.

Note: The application can be run in local mode within your IDE by simply running tests available in src/test/java folder.