Examples with Expression org.eclipse.bpmn2.Expression used on opensource projects

Example 26 with Expression

use of org.eclipse.bpmn2.Expression in project javautils by jiadongpo.

the class PropsUtils method resolveVariableExpression.

/**
 * Function that looks for expressions to parse. It parses backwards to capture embedded
 * expressions
 */
private static String resolveVariableExpression(final String value, final int last, final JexlEngine jexl) {
    final int lastIndex = value.lastIndexOf("$(", last);
    if (lastIndex == -1) {
        return value;
    }
    // Want to check that everything is well formed, and that
    // we properly capture $( ...(...)...).
    int bracketCount = 0;
    int nextClosed = lastIndex + 2;
    for (; nextClosed < value.length(); ++nextClosed) {
        if (value.charAt(nextClosed) == '(') {
            bracketCount++;
        } else if (value.charAt(nextClosed) == ')') {
            bracketCount--;
            if (bracketCount == -1) {
                break;
            }
        }
    }
    if (nextClosed == value.length()) {
        throw new IllegalArgumentException("Expression " + value + " not well formed.");
    }
    final String innerExpression = value.substring(lastIndex + 2, nextClosed);
    Object result = null;
    try {
        final Expression e = jexl.createExpression(innerExpression);
        result = e.evaluate(new MapContext());
    } catch (final JexlException e) {
        throw new IllegalArgumentException("Expression " + value + " not well formed. " + e.getMessage(), e);
    }
    if (result == null) {
        // for backward compatibility it is best to return value
        return value;
    }
    final String newValue = value.substring(0, lastIndex) + result.toString() + value.substring(nextClosed + 1);
    return resolveVariableExpression(newValue, lastIndex, jexl);
}

Example 27 with Expression

use of org.eclipse.bpmn2.Expression in project oozie by apache.

the class CoordInputLogicEvaluatorUtil method checkPullMissingDependencies.

/**
 * Check pull missing dependencies.
 *
 * @return true, if successful
 * @throws JDOMException the JDOM exception
 */
public boolean checkPullMissingDependencies() throws JDOMException {
    JexlEngine jexl = new OozieJexlEngine();
    String expression = CoordUtils.getInputLogic(coordAction.getActionXml().toString());
    if (StringUtils.isEmpty(expression)) {
        return true;
    }
    Expression e = jexl.createExpression(expression);
    JexlContext jc = new OozieJexlParser(jexl, new CoordInputLogicBuilder(new CoordInputLogicEvaluatorPhaseOne(coordAction, coordAction.getPullInputDependencies())));
    CoordInputLogicEvaluatorResult result = (CoordInputLogicEvaluatorResult) e.evaluate(jc);
    log.debug("Input logic expression for [{0}] and evaluate result is [{1}]", expression, result.getStatus());
    if (result.isWaiting()) {
        return false;
    }
    return result.isTrue();
}

Example 28 with Expression

use of org.eclipse.bpmn2.Expression in project oozie by apache.

the class CoordInputLogicEvaluatorUtil method checkPushDependencies.

/**
 * Check push dependencies.
 *
 * @return true, if successful
 * @throws JDOMException the JDOM exception
 */
public boolean checkPushDependencies() throws JDOMException {
    JexlEngine jexl = new OozieJexlEngine();
    String expression = CoordUtils.getInputLogic(coordAction.getActionXml().toString());
    if (StringUtils.isEmpty(expression)) {
        return true;
    }
    Expression e = jexl.createExpression(expression);
    JexlContext jc = new OozieJexlParser(jexl, new CoordInputLogicBuilder(new CoordInputLogicEvaluatorPhaseOne(coordAction, coordAction.getPushInputDependencies())));
    CoordInputLogicEvaluatorResult result = (CoordInputLogicEvaluatorResult) e.evaluate(jc);
    log.debug("Input logic expression for [{0}] and evaluate result is [{1}]", expression, result.getStatus());
    if (result.isWaiting()) {
        return false;
    }
    return result.isTrue();
}

Example 29 with Expression

use of org.eclipse.bpmn2.Expression in project oozie by apache.

the class CoordInputLogicEvaluatorUtil method checkUnResolved.

/**
 * Check unresolved.
 *
 * @param actualTime the actual time
 * @return true, if successful
 * @throws JDOMException the JDOM exception
 */
public boolean checkUnResolved(Date actualTime) throws JDOMException {
    JexlEngine jexl = new OozieJexlEngine();
    String expression = CoordUtils.getInputLogic(coordAction.getActionXml().toString());
    if (StringUtils.isEmpty(expression)) {
        return true;
    }
    Expression e = jexl.createExpression(expression);
    JexlContext jc = new OozieJexlParser(jexl, new CoordInputLogicBuilder(new CoordInputLogicEvaluatorPhaseTwo(coordAction, actualTime)));
    CoordInputLogicEvaluatorResult result = (CoordInputLogicEvaluatorResult) e.evaluate(jc);
    log.debug("Input logic expression for [{0}] and evaluate result is [{1}]", expression, result.getStatus());
    if (result.isWaiting()) {
        return false;
    }
    return result.isTrue();
}

Example 30 with Expression

use of org.eclipse.bpmn2.Expression in project oozie by apache.

the class CoordInputLogicEvaluatorUtil method getInputDependencies.

/**
 * Get input dependencies.
 *
 * @param name the name
 * @param syncCoordAction the sync coord action
 * @return the string
 * @throws JDOMException the JDOM exception
 */
public String getInputDependencies(String name, SyncCoordAction syncCoordAction) throws JDOMException {
    JexlEngine jexl = new OozieJexlEngine();
    CoordinatorActionBean coordAction = new CoordinatorActionBean();
    ELEvaluator eval = ELEvaluator.getCurrent();
    coordAction.setId(syncCoordAction.getActionId());
    Element eJob = XmlUtils.parseXml(eval.getVariable(".actionInputLogic").toString());
    String expression = new InputLogicParser().parseWithName(eJob, name);
    Expression e = jexl.createExpression(expression);
    CoordPullInputDependency pull = (CoordPullInputDependency) syncCoordAction.getPullDependencies();
    CoordPushInputDependency push = (CoordPushInputDependency) syncCoordAction.getPushDependencies();
    coordAction.setPushInputDependencies(push);
    coordAction.setPullInputDependencies(pull);
    JexlContext jc = new OozieJexlParser(jexl, new CoordInputLogicBuilder(new CoordInputLogicEvaluatorPhaseThree(coordAction, eval)));
    CoordInputLogicEvaluatorResult result = (CoordInputLogicEvaluatorResult) e.evaluate(jc);
    if (result == null || !result.isTrue()) {
        log.debug("Input logic expression for [{0}] is [{1}] and it is not resolved", name, expression);
        return "${coord:dataIn('" + name + "')}";
    } else {
        log.debug("Input logic expression for [{0}] is [{1}] and evaluate result is [{2}]", name, expression, result.getStatus());
        return result.getDataSets();
    }
}