Examples with Expression io.atlasmap.v2.Expression used on opensource projects

Example 1 with Expression

use of io.atlasmap.v2.Expression in project opennms by OpenNMS.

the class IpInterfaceScan method isIpMatching.

protected static boolean isIpMatching(final InetAddress ip, final String expr) {
    try {
        JexlEngine parser = new JexlEngine();
        Expression e = parser.createExpression(generateExpr(expr));
        final Map<String, Object> context = new HashMap<String, Object>();
        context.put("iplike", IPLike.class);
        context.put("ipaddr", ip.getHostAddress());
        Boolean out = (Boolean) e.evaluate(new MapContext(context));
        return out;
    } catch (Exception e) {
        LOG.error("Can't process rule '{}' while checking IP {}.", expr, ip, e);
        return false;
    }
}

Example 2 with Expression

use of io.atlasmap.v2.Expression in project opennms by OpenNMS.

the class JEXL method filter.

@Override
public void filter(RowSortedTable<Long, String, Double> qrAsTable) throws Exception {
    // Prepare the JEXL context
    final Map<String, Object> jexlValues = Maps.newHashMap();
    jexlValues.put("table", qrAsTable);
    final JexlContext context = new MapContext(jexlValues);
    // Compile the expression
    Expression expression = jexl.createExpression(m_expression);
    // Evaluate the expression
    expression.evaluate(context);
}

Example 3 with Expression

use of io.atlasmap.v2.Expression in project opennms by OpenNMS.

the class JMXMonitor method poll.

/**
 * {@inheritDoc}
 */
@Override
public PollStatus poll(MonitoredService svc, Map<String, Object> map) {
    final InetAddress ipv4Addr = svc.getAddress();
    PollStatus serviceStatus = PollStatus.unavailable();
    try {
        final Timer timer = new Timer();
        final JmxConnectionManager connectionManager = new DefaultConnectionManager(ParameterMap.getKeyedInteger(map, "retry", 3));
        final JmxConnectionManager.RetryCallback retryCallback = new JmxConnectionManager.RetryCallback() {

            @Override
            public void onRetry() {
                timer.reset();
            }
        };
        try (JmxServerConnectionWrapper connection = connectionManager.connect(getConnectionName(), ipv4Addr, JmxUtils.convertToStringMap(map), retryCallback)) {
            // Start with simple communication
            connection.getMBeanServerConnection().getMBeanCount();
            // Take time just here to get not influenced by test execution
            // time
            final long nanoResponseTime = System.nanoTime() - timer.getStartTime();
            // Find all variable definitions
            final Map<String, Object> variables = Maps.newHashMap();
            for (final String key : map.keySet()) {
                // Skip fast if it does not start with the prefix
                if (!key.startsWith(PARAM_BEAN_PREFIX)) {
                    continue;
                }
                // Get the variable name
                final String variable = key.substring(PARAM_BEAN_PREFIX.length());
                // Get the variable definition
                final String definition = ParameterMap.getKeyedString(map, key, null);
                // Store wrapper for variable definition
                variables.put(variable, ObjectNameWrapper.create(connection.getMBeanServerConnection(), definition));
            }
            // Find all test definitions
            final Map<String, Expression> tests = Maps.newHashMap();
            for (final String key : map.keySet()) {
                // Skip fast if it does not start with the prefix
                if (!key.startsWith(PARAM_TEST_PREFIX)) {
                    continue;
                }
                // Get the test name
                final String variable = key.substring(PARAM_TEST_PREFIX.length());
                // Get the test definition
                final String definition = ParameterMap.getKeyedString(map, key, null);
                // Build the expression from the definition
                final Expression expression = JEXL_ENGINE.createExpression(definition);
                // Store expressions
                tests.put(variable, expression);
            }
            // Also handle a single test
            if (map.containsKey(PARAM_TEST)) {
                // Get the test definition
                final String definition = ParameterMap.getKeyedString(map, PARAM_TEST, null);
                // Build the expression from the definition
                final Expression expression = JEXL_ENGINE.createExpression(definition);
                // Store expressions
                tests.put(null, expression);
            }
            // Build the context for all tests
            final JexlContext context = new ReadonlyContext(new MapContext(variables));
            serviceStatus = PollStatus.up(nanoResponseTime / 1000000.0);
            // Execute all tests
            for (final Map.Entry<String, Expression> e : tests.entrySet()) {
                if (!(boolean) e.getValue().evaluate(context)) {
                    serviceStatus = PollStatus.down("Test failed: " + e.getKey());
                    break;
                }
            }
        } catch (JmxServerConnectionException mbse) {
            // Number of retries exceeded
            String reason = "IOException while polling address: " + ipv4Addr;
            LOG.debug(reason);
            serviceStatus = PollStatus.unavailable(reason);
        }
    } catch (Throwable e) {
        String reason = "Monitor - failed! " + InetAddressUtils.str(ipv4Addr);
        LOG.debug(reason);
        serviceStatus = PollStatus.unavailable(reason);
    }
    return serviceStatus;
}

Example 4 with Expression

use of io.atlasmap.v2.Expression in project drools by kiegroup.

the class DMNEvaluatorCompiler method compileList.

private DMNExpressionEvaluator compileList(DMNCompilerContext ctx, DMNModelImpl model, DMNBaseNode node, String listName, org.kie.dmn.model.v1_1.List expression) {
    org.kie.dmn.model.v1_1.List listDef = expression;
    DMNListEvaluator listEval = new DMNListEvaluator(node.getName(), node.getSource(), listDef);
    for (Expression expr : listDef.getExpression()) {
        listEval.addElement(compileExpression(ctx, model, node, listName, expr));
    }
    return listEval;
}

Example 5 with Expression

use of io.atlasmap.v2.Expression in project kie-wb-common by kiegroup.

the class BindingPropertyConverter method wbFromDMN.

public static Binding wbFromDMN(final org.kie.dmn.model.v1_1.Binding dmn) {
    if (dmn == null) {
        return null;
    }
    InformationItem convertedParameter = InformationItemPropertyConverter.wbFromDMN(dmn.getParameter());
    Expression convertedExpression = ExpressionPropertyConverter.wbFromDMN(dmn.getExpression());
    Binding result = new Binding();
    result.setParameter(convertedParameter);
    result.setExpression(convertedExpression);
    return result;
}