Examples with DataSetRowAction org.talend.dataprep.transformation.api.action.DataSetRowAction used on opensource projects

Example 6 with DataSetRowAction

use of org.talend.dataprep.transformation.api.action.DataSetRowAction in project data-prep by Talend.

the class MetadataChangesOnActionsGenerator method compileActionsOnMetadata.

/**
 * Compile the given actions, hence updating the given row metadata and return the later.
 *
 * @param actions the actions to compile.
 * @param startingRowMetadata the row metadata to start from.
 * @return the updated row metadata from the actions compilation.
 */
private RowMetadata compileActionsOnMetadata(List<RunnableAction> actions, final RowMetadata startingRowMetadata) {
    final RowMetadata updatedRowMetadata = startingRowMetadata.clone();
    TransformationContext transformationContext = new TransformationContext();
    // compile every action within the transformation context
    for (RunnableAction action : actions) {
        final DataSetRowAction rowAction = action.getRowAction();
        final ActionContext actionContext = transformationContext.create(rowAction, updatedRowMetadata);
        rowAction.compile(actionContext);
    }
    // the cleanup is REALLY important (as it can close http connection in case of a lookup for instance)
    transformationContext.cleanup();
    return updatedRowMetadata;
}