Examples with IHopMetadataSerializer org.apache.hop.metadata.api.IHopMetadataSerializer used on opensource projects

Example 1 with IHopMetadataSerializer

use of org.apache.hop.metadata.api.IHopMetadataSerializer in project hop by apache.

the class CheckConnectionsDialog method open.

@Override
public IAction open() {
    Shell parent = getParent();
    shell = new Shell(parent, SWT.DIALOG_TRIM | SWT.RESIZE | SWT.MIN | SWT.MAX);
    props.setLook(shell);
    WorkflowDialog.setShellImage(shell, action);
    ModifyListener lsMod = e -> action.setChanged();
    changed = action.hasChanged();
    FormLayout formLayout = new FormLayout();
    formLayout.marginWidth = Const.FORM_MARGIN;
    formLayout.marginHeight = Const.FORM_MARGIN;
    shell.setLayout(formLayout);
    shell.setText("Check Neo4j Connections");
    int middle = props.getMiddlePct();
    int margin = Const.MARGIN;
    // Add buttons first, then the list of connections dynamically sizing
    // Put these buttons at the bottom
    // 
    Button wOk = new Button(shell, SWT.PUSH);
    wOk.setText(BaseMessages.getString(PKG, "System.Button.OK"));
    wOk.addListener(SWT.Selection, e -> ok());
    Button wCancel = new Button(shell, SWT.PUSH);
    wCancel.setText(BaseMessages.getString(PKG, "System.Button.Cancel"));
    wCancel.addListener(SWT.Selection, e -> cancel());
    BaseTransformDialog.positionBottomButtons(shell, new Button[] { wOk, wCancel }, margin, null);
    Label wlName = new Label(shell, SWT.RIGHT);
    wlName.setText("Action name");
    props.setLook(wlName);
    FormData fdlName = new FormData();
    fdlName.left = new FormAttachment(0, 0);
    fdlName.right = new FormAttachment(middle, -margin);
    fdlName.top = new FormAttachment(0, margin);
    wlName.setLayoutData(fdlName);
    wName = new Text(shell, SWT.SINGLE | SWT.LEFT | SWT.BORDER);
    props.setLook(wName);
    wName.addModifyListener(lsMod);
    FormData fdName = new FormData();
    fdName.left = new FormAttachment(middle, 0);
    fdName.top = new FormAttachment(0, margin);
    fdName.right = new FormAttachment(100, 0);
    wName.setLayoutData(fdName);
    Label wlConnections = new Label(shell, SWT.LEFT);
    wlConnections.setText(BaseMessages.getString(PKG, "CheckConnectionsDialog.Connections.Label"));
    props.setLook(wlConnections);
    FormData fdlConnections = new FormData();
    fdlConnections.left = new FormAttachment(0, 0);
    fdlConnections.right = new FormAttachment(middle, -margin);
    fdlConnections.top = new FormAttachment(wName, margin);
    wlConnections.setLayoutData(fdlConnections);
    String[] availableConnectionNames;
    try {
        IHopMetadataSerializer<NeoConnection> connectionSerializer = getMetadataProvider().getSerializer(NeoConnection.class);
        List<String> names = connectionSerializer.listObjectNames();
        Collections.sort(names);
        availableConnectionNames = names.toArray(new String[0]);
    } catch (HopException e) {
        availableConnectionNames = new String[] {};
    }
    ColumnInfo[] columns = new ColumnInfo[] { new ColumnInfo(BaseMessages.getString(PKG, "CheckConnectionsDialog.ConnectionName.Column.Label"), ColumnInfo.COLUMN_TYPE_CCOMBO, availableConnectionNames, false) };
    columns[0].setUsingVariables(true);
    wConnections = new TableView(action, shell, SWT.BORDER | SWT.FULL_SELECTION | SWT.MULTI, columns, action.getConnectionNames().size(), false, lsMod, props);
    FormData fdConnections = new FormData();
    fdConnections.left = new FormAttachment(0, 0);
    fdConnections.top = new FormAttachment(wlConnections, margin);
    fdConnections.right = new FormAttachment(100, 0);
    fdConnections.bottom = new FormAttachment(wOk, -margin * 2);
    wConnections.setLayoutData(fdConnections);
    getData();
    BaseDialog.defaultShellHandling(shell, c -> ok(), c -> cancel());
    return action;
}

Example 2 with IHopMetadataSerializer

use of org.apache.hop.metadata.api.IHopMetadataSerializer in project hop by apache.

the class MemoryMetadataProvider method getSerializer.

@Override
public <T extends IHopMetadata> IHopMetadataSerializer<T> getSerializer(Class<T> managedClass) throws HopException {
    IHopMetadataSerializer<IHopMetadata> serializer = serializerMap.get(managedClass.getName());
    if (serializer == null) {
        HopMetadata hopMetadata = managedClass.getAnnotation(HopMetadata.class);
        String description = managedClass.getSimpleName();
        if (hopMetadata != null) {
            description = hopMetadata.name();
        }
        serializer = (IHopMetadataSerializer<IHopMetadata>) new MemoryMetadataSerializer<>(this, managedClass, variables, description);
        serializerMap.put(managedClass.getName(), serializer);
    }
    return (IHopMetadataSerializer<T>) serializer;
}

Example 3 with IHopMetadataSerializer

use of org.apache.hop.metadata.api.IHopMetadataSerializer in project hop by apache.

the class CypherScript method execute.

@Override
public Result execute(Result result, int nr) throws HopException {
    IHopMetadataSerializer<NeoConnection> serializer = getMetadataProvider().getSerializer(NeoConnection.class);
    // Replace variables & parameters
    // 
    NeoConnection connection;
    String realConnectionName = resolve(connectionName);
    try {
        if (StringUtils.isEmpty(realConnectionName)) {
            throw new HopException("The Neo4j connection name is not set");
        }
        connection = serializer.load(realConnectionName);
        if (connection == null) {
            throw new HopException("Unable to find connection with name '" + realConnectionName + "'");
        }
    } catch (Exception e) {
        result.setResult(false);
        result.increaseErrors(1L);
        throw new HopException("Unable to gencsv or find connection with name '" + realConnectionName + "'", e);
    }
    String realScript;
    if (replacingVariables) {
        realScript = resolve(script);
    } else {
        realScript = script;
    }
    int nrExecuted;
    try (Driver driver = connection.getDriver(log, this)) {
        // 
        try (Session session = connection.getSession(log, driver, this)) {
            TransactionWork<Integer> transactionWork = transaction -> {
                int executed = 0;
                try {
                    // Split the script into parts : semi-colon at the start of a separate line
                    // 
                    String[] commands = realScript.split("\\r?\\n;");
                    for (String command : commands) {
                        // Cleanup command: replace leading and trailing whitespaces and newlines
                        // 
                        String cypher = command.replaceFirst("^\\s+", "").replaceFirst("\\s+$", "");
                        // 
                        if (StringUtils.isNotEmpty(cypher)) {
                            transaction.run(cypher);
                            executed++;
                            log.logDetailed("Executed cypher statement: " + cypher);
                        }
                    }
                    // All statements executed successfully so commit
                    // 
                    transaction.commit();
                } catch (Exception e) {
                    log.logError("Error executing cypher statements...", e);
                    result.increaseErrors(1L);
                    transaction.rollback();
                    result.setResult(false);
                }
                return executed;
            };
            nrExecuted = session.writeTransaction(transactionWork);
        }
    }
    if (result.getNrErrors() == 0) {
        logBasic("Neo4j script executed " + nrExecuted + " statements without error");
    } else {
        logBasic("Neo4j script executed with error(s)");
    }
    return result;
}