Examples with MappingIODefinition org.pentaho.di.trans.steps.mapping.MappingIODefinition used on opensource projects

Example 1 with MappingIODefinition

use of org.pentaho.di.trans.steps.mapping.MappingIODefinition in project pentaho-metaverse by pentaho.

the class BaseMappingAnalyzer method processOutputMappings.

/**
 * Processes output mappings and returns a map of mapped fields ( parent source > sub-trans target ).
 */
private Map<String, String> processOutputMappings(final TransMeta subTransMeta, final Vertex stepVertex, final List<MappingIODefinition> mappings, final List<String> verboseProps) {
    final Map<String, String> mappedOutputFields = new HashMap();
    int mappingIdx = 1;
    for (final MappingIODefinition mapping : mappings) {
        final String mappingKey = "output [" + mappingIdx + "]";
        verboseProps.add(mappingKey);
        String sourceStep = getSourceStepName(subTransMeta, mapping, true, false);
        String targetStep = getTargetStepName(subTransMeta, mapping, true, false);
        final StringBuilder mappingStr = new StringBuilder();
        if (sourceStep != null && targetStep != null) {
            mappingStr.append(sourceStep).append(" > ").append(targetStep);
        }
        // main path?
        if (!mapping.isMainDataPath()) {
            final String descriptionKey = mappingKey + " description";
            verboseProps.add(descriptionKey);
            setPropertySafely(stepVertex, descriptionKey, mapping.getDescription());
        }
        setCommonProps(stepVertex, mappingKey, mapping, mappingStr, verboseProps);
        for (final MappingValueRename rename : mapping.getValueRenames()) {
            mappedOutputFields.put(rename.getSourceValueName(), rename.getTargetValueName());
        }
        mappingIdx++;
    }
    return mappedOutputFields;
}

Example 2 with MappingIODefinition

use of org.pentaho.di.trans.steps.mapping.MappingIODefinition in project pentaho-metaverse by pentaho.

the class BaseMappingAnalyzer method processInputMappings.

/**
 * Processes input mappings and returns a map of mapped fields ( parent source > sub-trans target ).
 */
private Map<String, String> processInputMappings(final TransMeta subTransMeta, final Vertex stepVertex, final List<MappingIODefinition> inputMappings, final List<String> verboseProps) {
    final Map<String, String> mappedInputFields = new HashMap();
    int mappingIdx = 1;
    for (final MappingIODefinition mapping : inputMappings) {
        final String mappingKey = "input [" + mappingIdx + "]";
        verboseProps.add(mappingKey);
        String sourceStep = getSourceStepName(subTransMeta, mapping, true, true);
        String targetStep = getTargetStepName(subTransMeta, mapping, true, true);
        final StringBuilder mappingStr = new StringBuilder();
        if (sourceStep != null && targetStep != null) {
            mappingStr.append(sourceStep).append(" > ").append(targetStep);
        }
        // main path?
        if (!mapping.isMainDataPath()) {
            final String descriptionKey = mappingKey + " description";
            verboseProps.add(descriptionKey);
            setPropertySafely(stepVertex, descriptionKey, mapping.getDescription());
        }
        setCommonProps(stepVertex, mappingKey, mapping, mappingStr, verboseProps);
        for (final MappingValueRename rename : mapping.getValueRenames()) {
            mappedInputFields.put(rename.getSourceValueName(), rename.getTargetValueName());
        }
        mappingIdx++;
    }
    return mappedInputFields;
}

Example 3 with MappingIODefinition

use of org.pentaho.di.trans.steps.mapping.MappingIODefinition in project pentaho-kettle by pentaho.

the class MappingIODefinitionLoadSaveValidator method getTestObject.

@Override
public MappingIODefinition getTestObject() {
    MappingIODefinition rtn = new MappingIODefinition();
    rtn.setDescription(UUID.randomUUID().toString());
    rtn.setInputStepname(UUID.randomUUID().toString());
    rtn.setMainDataPath(rand.nextBoolean());
    rtn.setOutputStepname(UUID.randomUUID().toString());
    rtn.setRenamingOnOutput(rand.nextBoolean());
    List<MappingValueRename> renames = new ArrayList<MappingValueRename>() {

        {
            add(new MappingValueRename(UUID.randomUUID().toString(), UUID.randomUUID().toString()));
            add(new MappingValueRename(UUID.randomUUID().toString(), UUID.randomUUID().toString()));
            add(new MappingValueRename(UUID.randomUUID().toString(), UUID.randomUUID().toString()));
        }
    };
    rtn.setValueRenames(renames);
    return rtn;
}

Example 4 with MappingIODefinition

use of org.pentaho.di.trans.steps.mapping.MappingIODefinition in project pentaho-kettle by pentaho.

the class SimpleMappingMeta method setDefault.

public void setDefault() {
    specificationMethod = ObjectLocationSpecificationMethod.FILENAME;
    MappingIODefinition inputDefinition = new MappingIODefinition(null, null);
    inputDefinition.setMainDataPath(true);
    inputDefinition.setRenamingOnOutput(true);
    inputMapping = inputDefinition;
    MappingIODefinition outputDefinition = new MappingIODefinition(null, null);
    outputDefinition.setMainDataPath(true);
    outputMapping = outputDefinition;
}

Example 5 with MappingIODefinition

use of org.pentaho.di.trans.steps.mapping.MappingIODefinition in project pentaho-kettle by pentaho.

the class MappingDialog method addMappingDefinitionTab.

private void addMappingDefinitionTab(List<MappingIODefinition> definitions, final String tabTitle, String listLabel, String addToolTip, String removeToolTip, String inputStepLabel, String outputStepLabel, String descriptionLabel, String sourceColumnLabel, String targetColumnLabel, String noItemsLabel, final boolean input) {
    final CTabItem wTab = new CTabItem(wTabFolder, SWT.NONE);
    wTab.setText(tabTitle);
    Composite wInputComposite = new Composite(wTabFolder, SWT.NONE);
    props.setLook(wInputComposite);
    FormLayout tabLayout = new FormLayout();
    tabLayout.marginWidth = 15;
    tabLayout.marginHeight = 15;
    wInputComposite.setLayout(tabLayout);
    Label wAvailableInputs = new Label(wInputComposite, SWT.LEFT);
    props.setLook(wAvailableInputs);
    wAvailableInputs.setText(listLabel);
    FormData fdwAvailableInputs = new FormData();
    fdwAvailableInputs.left = new FormAttachment(0);
    fdwAvailableInputs.top = new FormAttachment(0);
    Label wRemoveButton = new Label(wInputComposite, SWT.NONE);
    wRemoveButton.setImage(GUIResource.getInstance().getImage("ui/images/generic-delete.svg"));
    wRemoveButton.setToolTipText(removeToolTip);
    props.setLook(wRemoveButton);
    FormData fdwAddInputButton = new FormData();
    fdwAddInputButton.top = new FormAttachment(0);
    fdwAddInputButton.right = new FormAttachment(30);
    wRemoveButton.setLayoutData(fdwAddInputButton);
    Label wAddButton = new Label(wInputComposite, SWT.NONE);
    wAddButton.setImage(GUIResource.getInstance().getImage("ui/images/Add.svg"));
    wAddButton.setToolTipText(addToolTip);
    props.setLook(wAddButton);
    FormData fdwAddButton = new FormData();
    fdwAddButton.top = new FormAttachment(0);
    fdwAddButton.right = new FormAttachment(wRemoveButton, -5);
    wAddButton.setLayoutData(fdwAddButton);
    org.eclipse.swt.widgets.List wInputList = new org.eclipse.swt.widgets.List(wInputComposite, SWT.BORDER);
    FormData fdwInputList = new FormData();
    fdwInputList.left = new FormAttachment(0);
    fdwInputList.top = new FormAttachment(wAvailableInputs, 5);
    fdwInputList.bottom = new FormAttachment(100);
    fdwInputList.right = new FormAttachment(30);
    wInputList.setLayoutData(fdwInputList);
    for (int i = 0; i < definitions.size(); i++) {
        String label = !Utils.isEmpty(definitions.get(i).getInputStepname()) ? definitions.get(i).getInputStepname() : tabTitle + (i > 0 ? String.valueOf(i + 1) : "");
        wInputList.add(label);
    }
    final Label wlNoItems = new Label(wInputComposite, SWT.CENTER);
    wlNoItems.setText(noItemsLabel);
    props.setLook(wlNoItems);
    FormData fdlNoItems = new FormData();
    fdlNoItems.left = new FormAttachment(wInputList, 30);
    fdlNoItems.right = new FormAttachment(100);
    fdlNoItems.top = new FormAttachment(50);
    wlNoItems.setLayoutData(fdlNoItems);
    wlNoItems.setVisible(false);
    Composite wFieldsComposite = new Composite(wInputComposite, SWT.NONE);
    props.setLook(wFieldsComposite);
    FormLayout fieldLayout = new FormLayout();
    fieldLayout.marginWidth = 0;
    fieldLayout.marginHeight = 0;
    wFieldsComposite.setLayout(fieldLayout);
    final Button wMainPath = new Button(wFieldsComposite, SWT.CHECK);
    wMainPath.setText(BaseMessages.getString(PKG, "MappingDialog.input.MainDataPath"));
    props.setLook(wMainPath);
    FormData fdMainPath = new FormData();
    fdMainPath.top = new FormAttachment(0);
    fdMainPath.left = new FormAttachment(0);
    wMainPath.setLayoutData(fdMainPath);
    wMainPath.addSelectionListener(new SelectionAdapter() {

        @Override
        public void widgetSelected(SelectionEvent event) {
            definitions.get(wInputList.getSelectionIndex()).setMainDataPath(!definitions.get(wInputList.getSelectionIndex()).isMainDataPath());
        }
    });
    final Label wlInputStep = new Label(wFieldsComposite, SWT.RIGHT);
    props.setLook(wlInputStep);
    wlInputStep.setText(inputStepLabel);
    FormData fdlInputStep = new FormData();
    fdlInputStep.top = new FormAttachment(wMainPath, 10);
    fdlInputStep.left = new FormAttachment(0);
    wlInputStep.setLayoutData(fdlInputStep);
    // What's the stepname to read from? (empty is OK too)
    // 
    final Button wbInputStep = new Button(wFieldsComposite, SWT.PUSH);
    props.setLook(wbInputStep);
    wbInputStep.setText(BaseMessages.getString(PKG, "MappingDialog.button.SourceStepName"));
    FormData fdbInputStep = new FormData();
    fdbInputStep.top = new FormAttachment(wlInputStep, 5);
    // First one in the
    fdbInputStep.right = new FormAttachment(100);
    // left top corner
    wbInputStep.setLayoutData(fdbInputStep);
    final Text wInputStep = new Text(wFieldsComposite, SWT.SINGLE | SWT.LEFT | SWT.BORDER);
    props.setLook(wInputStep);
    wInputStep.addModifyListener(lsMod);
    FormData fdInputStep = new FormData();
    fdInputStep.top = new FormAttachment(wlInputStep, 5);
    // To the right of
    fdInputStep.left = new FormAttachment(0);
    // the label
    fdInputStep.right = new FormAttachment(wbInputStep, -5);
    wInputStep.setLayoutData(fdInputStep);
    wInputStep.addFocusListener(new FocusAdapter() {

        @Override
        public void focusLost(FocusEvent event) {
            definitions.get(wInputList.getSelectionIndex()).setInputStepname(wInputStep.getText());
            String label = !Utils.isEmpty(wInputStep.getText()) ? wInputStep.getText() : tabTitle + (wInputList.getSelectionIndex() > 0 ? String.valueOf(wInputList.getSelectionIndex() + 1) : "");
            wInputList.setItem(wInputList.getSelectionIndex(), label);
        }
    });
    wbInputStep.addSelectionListener(new SelectionAdapter() {

        @Override
        public void widgetSelected(SelectionEvent event) {
            String stepName = selectTransformationStepname(input, input);
            if (stepName != null) {
                wInputStep.setText(stepName);
                definitions.get(wInputList.getSelectionIndex()).setInputStepname(stepName);
            }
        }
    });
    // What's the step name to read from? (empty is OK too)
    // 
    final Label wlOutputStep = new Label(wFieldsComposite, SWT.RIGHT);
    props.setLook(wlOutputStep);
    wlOutputStep.setText(outputStepLabel);
    FormData fdlOutputStep = new FormData();
    fdlOutputStep.top = new FormAttachment(wInputStep, 10);
    fdlOutputStep.left = new FormAttachment(0);
    wlOutputStep.setLayoutData(fdlOutputStep);
    final Button wbOutputStep = new Button(wFieldsComposite, SWT.PUSH);
    props.setLook(wbOutputStep);
    wbOutputStep.setText(BaseMessages.getString(PKG, "MappingDialog.button.SourceStepName"));
    FormData fdbOutputStep = new FormData();
    fdbOutputStep.top = new FormAttachment(wlOutputStep, 5);
    fdbOutputStep.right = new FormAttachment(100);
    wbOutputStep.setLayoutData(fdbOutputStep);
    final Text wOutputStep = new Text(wFieldsComposite, SWT.SINGLE | SWT.LEFT | SWT.BORDER);
    props.setLook(wOutputStep);
    wOutputStep.addModifyListener(lsMod);
    FormData fdOutputStep = new FormData();
    fdOutputStep.top = new FormAttachment(wlOutputStep, 5);
    // To the right of
    fdOutputStep.left = new FormAttachment(0);
    // the label
    fdOutputStep.right = new FormAttachment(wbOutputStep, -5);
    wOutputStep.setLayoutData(fdOutputStep);
    // Allow for a small description
    // 
    Label wlDescription = new Label(wFieldsComposite, SWT.RIGHT);
    props.setLook(wlDescription);
    wlDescription.setText(descriptionLabel);
    FormData fdlDescription = new FormData();
    fdlDescription.top = new FormAttachment(wOutputStep, 5);
    // First one in the left
    fdlDescription.left = new FormAttachment(0);
    wlDescription.setLayoutData(fdlDescription);
    final Text wDescription = new Text(wFieldsComposite, SWT.SINGLE | SWT.LEFT | SWT.BORDER);
    props.setLook(wDescription);
    wDescription.addModifyListener(lsMod);
    FormData fdDescription = new FormData();
    fdDescription.top = new FormAttachment(wlDescription, 5);
    // To the right of
    fdDescription.left = new FormAttachment(0);
    // the label
    fdDescription.right = new FormAttachment(100);
    wDescription.setLayoutData(fdDescription);
    wDescription.addFocusListener(new FocusAdapter() {

        @Override
        public void focusLost(FocusEvent event) {
            definitions.get(wInputList.getSelectionIndex()).setDescription(wDescription.getText());
        }
    });
    final Button wbEnterMapping = new Button(wFieldsComposite, SWT.PUSH);
    props.setLook(wbEnterMapping);
    wbEnterMapping.setText(BaseMessages.getString(PKG, "MappingDialog.button.EnterMapping"));
    FormData fdbEnterMapping = new FormData();
    fdbEnterMapping.bottom = new FormAttachment(100);
    fdbEnterMapping.right = new FormAttachment(100);
    wbEnterMapping.setLayoutData(fdbEnterMapping);
    wbEnterMapping.setEnabled(input);
    ColumnInfo[] colinfo = new ColumnInfo[] { new ColumnInfo(sourceColumnLabel, ColumnInfo.COLUMN_TYPE_TEXT, false, false), new ColumnInfo(targetColumnLabel, ColumnInfo.COLUMN_TYPE_TEXT, false, false) };
    final TableView wFieldMappings = new TableView(transMeta, wFieldsComposite, SWT.FULL_SELECTION | SWT.SINGLE | SWT.BORDER, colinfo, 1, false, lsMod, props, false);
    props.setLook(wFieldMappings);
    FormData fdMappings = new FormData();
    fdMappings.top = new FormAttachment(wDescription, 20);
    fdMappings.bottom = new FormAttachment(wbEnterMapping, -5);
    fdMappings.left = new FormAttachment(0);
    fdMappings.right = new FormAttachment(100);
    wFieldMappings.setLayoutData(fdMappings);
    wFieldMappings.getTable().addListener(SWT.Resize, new ColumnsResizer(0, 50, 50));
    wbEnterMapping.addSelectionListener(new SelectionAdapter() {

        @Override
        public void widgetSelected(SelectionEvent arg0) {
            try {
                RowMetaInterface sourceRowMeta = getFieldsFromStep(wInputStep.getText(), true, input);
                RowMetaInterface targetRowMeta = getFieldsFromStep(wOutputStep.getText(), false, input);
                String[] sourceFields = sourceRowMeta.getFieldNames();
                String[] targetFields = targetRowMeta.getFieldNames();
                // Refresh mappings
                int nrLines = wFieldMappings.nrNonEmpty();
                definitions.get(wInputList.getSelectionIndex()).getValueRenames().clear();
                for (int i = 0; i < nrLines; i++) {
                    TableItem item = wFieldMappings.getNonEmpty(i);
                    definitions.get(wInputList.getSelectionIndex()).getValueRenames().add(new MappingValueRename(item.getText(1), item.getText(2)));
                }
                List<MappingValueRename> mappingValue = definitions.get(wInputList.getSelectionIndex()).getValueRenames();
                List<SourceToTargetMapping> currentMappings = MappingUtil.getCurrentMappings(Arrays.asList(sourceFields), Arrays.asList(targetFields), mappingValue);
                EnterMappingDialog dialog = new EnterMappingDialog(shell, sourceFields, targetFields, currentMappings);
                List<SourceToTargetMapping> mappings = dialog.open();
                if (mappings != null) {
                    // first clear the dialog...
                    wFieldMappings.clearAll(false);
                    // 
                    mappingValue.clear();
                    // Now add the new values...
                    for (SourceToTargetMapping mapping : mappings) {
                        TableItem item = new TableItem(wFieldMappings.table, SWT.NONE);
                        item.setText(1, mapping.getSourceString(sourceFields));
                        item.setText(2, mapping.getTargetString(targetFields));
                        String source = input ? item.getText(1) : item.getText(2);
                        String target = input ? item.getText(2) : item.getText(1);
                        mappingValue.add(new MappingValueRename(source, target));
                    }
                    wFieldMappings.removeEmptyRows();
                    wFieldMappings.setRowNums();
                    wFieldMappings.optWidth(true);
                }
            } catch (KettleException e) {
                Listener ok = new Listener() {

                    @Override
                    public void handleEvent(final Event event) {
                    /* do nothing for now */
                    }
                };
                Map<String, Listener> listenerMap = new LinkedHashMap<>();
                listenerMap.put(BaseMessages.getString("System.Button.OK"), ok);
                new WarningDialog(shell, BaseMessages.getString(PKG, "System.Dialog.Error.Title"), e.getMessage(), listenerMap);
            // new ErrorDialog( shell, BaseMessages.getString( PKG, "System.Dialog.Error.Title" ), BaseMessages.getString(
            // PKG, "MappingDialog.Exception.ErrorGettingMappingSourceAndTargetFields", e.toString() ), e );
            }
        }
    });
    wOutputStep.addFocusListener(new FocusAdapter() {

        @Override
        public void focusLost(FocusEvent event) {
            definitions.get(wInputList.getSelectionIndex()).setOutputStepname(wOutputStep.getText());
            try {
                enableMappingButton(wbEnterMapping, input, wInputStep.getText(), wOutputStep.getText());
            } catch (KettleException e) {
                // Show the missing/wrong step name error
                // 
                Listener ok = new Listener() {

                    @Override
                    public void handleEvent(final Event event) {
                    /* do nothing for now */
                    }
                };
                Map<String, Listener> listenerMap = new LinkedHashMap<>();
                listenerMap.put(BaseMessages.getString("System.Button.OK"), ok);
                new WarningDialog(shell, "Error", e.getMessage(), listenerMap).open();
            // 
            // new ErrorDialog( shell, "Error", "Unexpected error", e );
            }
        }
    });
    wbOutputStep.addSelectionListener(new SelectionAdapter() {

        @Override
        public void widgetSelected(SelectionEvent event) {
            String stepName = selectTransformationStepname(!input, input);
            if (stepName != null) {
                wOutputStep.setText(stepName);
                definitions.get(wInputList.getSelectionIndex()).setOutputStepname(stepName);
                try {
                    enableMappingButton(wbEnterMapping, input, wInputStep.getText(), wOutputStep.getText());
                } catch (KettleException e) {
                    // Show the missing/wrong stepname error
                    new ErrorDialog(shell, "Error", "Unexpected error", e);
                }
            }
        }
    });
    final Button wRenameOutput;
    if (input) {
        // Add a checkbox to indicate that all output mappings need to rename
        // the values back...
        // 
        wRenameOutput = new Button(wFieldsComposite, SWT.CHECK);
        wRenameOutput.setText(BaseMessages.getString(PKG, "MappingDialog.input.RenamingOnOutput"));
        props.setLook(wRenameOutput);
        FormData fdRenameOutput = new FormData();
        fdRenameOutput.top = new FormAttachment(wFieldMappings, 5);
        fdRenameOutput.left = new FormAttachment(0);
        wRenameOutput.setLayoutData(fdRenameOutput);
        wRenameOutput.addSelectionListener(new SelectionAdapter() {

            @Override
            public void widgetSelected(SelectionEvent event) {
                definitions.get(wInputList.getSelectionIndex()).setRenamingOnOutput(!definitions.get(wInputList.getSelectionIndex()).isRenamingOnOutput());
            }
        });
    } else {
        wRenameOutput = null;
    }
    FormData fdInputComposite = new FormData();
    fdInputComposite.left = new FormAttachment(0);
    fdInputComposite.top = new FormAttachment(0);
    fdInputComposite.right = new FormAttachment(100);
    fdInputComposite.bottom = new FormAttachment(100);
    wInputComposite.setLayoutData(fdInputComposite);
    FormData fdFieldsComposite = new FormData();
    fdFieldsComposite.left = new FormAttachment(wInputList, 30);
    fdFieldsComposite.right = new FormAttachment(100);
    fdFieldsComposite.bottom = new FormAttachment(100);
    fdFieldsComposite.top = new FormAttachment(0);
    wFieldsComposite.setLayoutData(fdFieldsComposite);
    wInputComposite.layout();
    wTab.setControl(wInputComposite);
    wMainPath.addSelectionListener(new SelectionAdapter() {

        public void widgetSelected(SelectionEvent arg0) {
            setTabFlags(wMainPath, wlInputStep, wInputStep, wbInputStep, wlOutputStep, wOutputStep, wbOutputStep, wlDescription, wDescription);
        }
    });
    wInputList.addSelectionListener(new SelectionAdapter() {

        @Override
        public void widgetSelected(SelectionEvent selectionEvent) {
            updateFields(definitions.get(wInputList.getSelectionIndex()), input, wMainPath, wlInputStep, wInputStep, wbInputStep, wlOutputStep, wOutputStep, wbOutputStep, wlDescription, wDescription, wFieldMappings, wRenameOutput);
        }
    });
    wAddButton.addMouseListener(new MouseAdapter() {

        @Override
        public void mouseUp(MouseEvent mouseEvent) {
            MappingIODefinition definition = new MappingIODefinition();
            definition.setMainDataPath(true);
            definitions.add(definition);
            wInputList.add(tabTitle + (definitions.size() > 1 ? String.valueOf(definitions.size()) : ""));
            wInputList.select(definitions.size() - 1);
            updateFields(definitions.get(wInputList.getSelectionIndex()), input, wMainPath, wlInputStep, wInputStep, wbInputStep, wlOutputStep, wOutputStep, wbOutputStep, wlDescription, wDescription, wFieldMappings, wRenameOutput);
            wlNoItems.setVisible(false);
            wFieldsComposite.setVisible(true);
            wRemoveButton.setEnabled(true);
        }
    });
    wRemoveButton.addMouseListener(new MouseAdapter() {

        @Override
        public void mouseUp(MouseEvent mouseEvent) {
            MessageBox box = new MessageBox(shell, SWT.YES | SWT.NO);
            box.setText(BaseMessages.getString(PKG, "MappingDialog.CloseDefinitionTabAreYouSure.Title"));
            box.setMessage(BaseMessages.getString(PKG, "MappingDialog.CloseDefinitionTabAreYouSure.Message"));
            int answer = box.open();
            if (answer != SWT.YES) {
                return;
            }
            int index = wInputList.getSelectionIndex();
            definitions.remove(index);
            wInputList.removeAll();
            for (int i = 0; i < definitions.size(); i++) {
                String label = !Utils.isEmpty(definitions.get(i).getInputStepname()) ? definitions.get(i).getInputStepname() : tabTitle + (i > 0 ? String.valueOf(i + 1) : "");
                wInputList.add(label);
            }
            if (index > 0) {
                wInputList.select(index - 1);
            } else if (definitions.size() > 0) {
                wInputList.select(index);
            } else {
                index = -1;
            }
            if (index != -1) {
                updateFields(definitions.get(wInputList.getSelectionIndex()), input, wMainPath, wlInputStep, wInputStep, wbInputStep, wlOutputStep, wOutputStep, wbOutputStep, wlDescription, wDescription, wFieldMappings, wRenameOutput);
            }
            if (definitions.size() == 0) {
                wlNoItems.setVisible(true);
                wFieldsComposite.setVisible(false);
                wRemoveButton.setEnabled(false);
            }
        }
    });
    if (definitions.size() > 0) {
        wInputList.select(0);
        updateFields(definitions.get(0), input, wMainPath, wlInputStep, wInputStep, wbInputStep, wlOutputStep, wOutputStep, wbOutputStep, wlDescription, wDescription, wFieldMappings, wRenameOutput);
    } else {
        wlNoItems.setVisible(true);
        wFieldsComposite.setVisible(false);
        wRemoveButton.setEnabled(false);
    }
    setTabFlags(wMainPath, wlInputStep, wInputStep, wbInputStep, wlOutputStep, wOutputStep, wbOutputStep, wlDescription, wDescription);
    wTabFolder.setSelection(wTab);
}