Examples with ExpressionEvaluator io.automatiko.engine.api.expression.ExpressionEvaluator used on opensource projects

Example 11 with ExpressionEvaluator

use of io.automatiko.engine.api.expression.ExpressionEvaluator in project automatiko-engine by automatiko-io.

the class SubProcessNodeInstance method getSourceParameters.

@SuppressWarnings({ "unchecked", "rawtypes" })
protected Map<String, Object> getSourceParameters(DataAssociation association) {
    Map<String, Object> parameters = new HashMap<String, Object>();
    for (String sourceParam : association.getSources()) {
        Object parameterValue = null;
        VariableScopeInstance variableScopeInstance = (VariableScopeInstance) resolveContextInstance(VariableScope.VARIABLE_SCOPE, sourceParam);
        if (variableScopeInstance != null) {
            parameterValue = variableScopeInstance.getVariable(sourceParam);
        } else {
            try {
                ExpressionEvaluator evaluator = (ExpressionEvaluator) ((WorkflowProcess) getProcessInstance().getProcess()).getDefaultContext(ExpressionEvaluator.EXPRESSION_EVALUATOR);
                parameterValue = evaluator.evaluate(sourceParam, new NodeInstanceResolverFactory(this));
            } catch (Throwable t) {
                logger.warn("Could not find variable scope for variable {}", sourceParam);
            }
        }
        if (parameterValue != null) {
            parameters.put(sourceParam, parameterValue);
        }
    }
    return parameters;
}

Example 12 with ExpressionEvaluator

use of io.automatiko.engine.api.expression.ExpressionEvaluator in project automatiko-engine by automatiko-io.

the class WorkItemNodeInstance method createWorkItem.

@SuppressWarnings({ "unchecked", "rawtypes" })
protected WorkItem createWorkItem(WorkItemNode workItemNode) {
    Work work = workItemNode.getWork();
    if (workItem == null) {
        workItem = newWorkItem();
        ((WorkItemImpl) workItem).setName(work.getName());
        ((WorkItemImpl) workItem).setProcessInstanceId(getProcessInstance().getId());
        ((WorkItemImpl) workItem).setParentProcessInstanceId(getProcessInstance().getParentProcessInstanceId());
        ((WorkItemImpl) workItem).setParameters(new HashMap<>(work.getParameters()));
        workItem.setStartDate(new Date());
    }
    // if there are any dynamic parameters add them
    if (dynamicParameters != null) {
        workItem.getParameters().putAll(dynamicParameters);
    }
    for (DataAssociation association : workItemNode.getInAssociations()) {
        if (association.getTransformation() != null) {
            Transformation transformation = association.getTransformation();
            DataTransformer transformer = DataTransformerRegistry.get().find(transformation.getLanguage());
            if (transformer != null) {
                Object parameterValue = transformer.transform(transformation.getCompiledExpression(), getSourceParameters(association));
                if (parameterValue != null) {
                    ((WorkItemImpl) workItem).setParameter(association.getTarget(), parameterValue);
                }
            }
        } else if (association.getAssignments() == null || association.getAssignments().isEmpty()) {
            Object parameterValue = null;
            VariableScopeInstance variableScopeInstance = (VariableScopeInstance) resolveContextInstance(VARIABLE_SCOPE, association.getSources().get(0));
            if (variableScopeInstance != null) {
                parameterValue = variableScopeInstance.getVariable(association.getSources().get(0));
            } else {
                try {
                    ExpressionEvaluator evaluator = (ExpressionEvaluator) ((WorkflowProcess) getProcessInstance().getProcess()).getDefaultContext(ExpressionEvaluator.EXPRESSION_EVALUATOR);
                    parameterValue = evaluator.evaluate(association.getSources().get(0), new NodeInstanceResolverFactory(this));
                } catch (Throwable t) {
                    logger.error("Could not find variable scope for variable {}", association.getSources().get(0));
                    logger.error("when trying to execute Work Item {}", work.getName());
                    logger.error("Continuing without setting parameter.");
                }
            }
            if (parameterValue != null) {
                ((WorkItemImpl) workItem).setParameter(association.getTarget(), parameterValue);
            }
        } else {
            association.getAssignments().stream().forEach(this::handleAssignment);
        }
    }
    for (Map.Entry<String, Object> entry : workItem.getParameters().entrySet()) {
        if (entry.getValue() instanceof String) {
            String s = (String) entry.getValue();
            Map<String, Object> replacements = new HashMap<>();
            Matcher matcher = PatternConstants.PARAMETER_MATCHER.matcher(s);
            while (matcher.find()) {
                String paramName = matcher.group(1);
                String replacementKey = paramName;
                String defaultValue = "";
                if (paramName.contains(":")) {
                    String[] items = paramName.split(":");
                    paramName = items[0];
                    defaultValue = items[1];
                }
                if (replacements.get(replacementKey) == null) {
                    VariableScopeInstance variableScopeInstance = (VariableScopeInstance) resolveContextInstance(VARIABLE_SCOPE, paramName);
                    if (variableScopeInstance != null) {
                        Object variableValue = variableScopeInstance.getVariable(paramName);
                        Object variableValueString = variableValue == null ? defaultValue : variableValue;
                        replacements.put(replacementKey, variableValueString);
                    } else {
                        try {
                            ExpressionEvaluator evaluator = (ExpressionEvaluator) ((WorkflowProcess) getProcessInstance().getProcess()).getDefaultContext(ExpressionEvaluator.EXPRESSION_EVALUATOR);
                            Object variableValue = evaluator.evaluate(paramName, new NodeInstanceResolverFactory(this));
                            Object variableValueString = variableValue == null ? defaultValue : variableValue;
                            replacements.put(replacementKey, variableValueString);
                        } catch (Throwable t) {
                            logger.error("Could not find variable scope for variable {}", paramName);
                            logger.error("when trying to replace variable in string for Work Item {}", work.getName());
                            logger.error("Continuing without setting parameter.");
                        }
                    }
                }
            }
            if (replacements.size() > 1) {
                for (Map.Entry<String, Object> replacement : replacements.entrySet()) {
                    s = s.replace("#{" + replacement.getKey() + "}", replacement.getValue().toString());
                }
                ((WorkItemImpl) workItem).setParameter(entry.getKey(), s);
            } else if (replacements.size() == 1) {
                ((WorkItemImpl) workItem).setParameter(entry.getKey(), replacements.values().iterator().next());
            }
        }
    }
    return workItem;
}

Example 13 with ExpressionEvaluator

use of io.automatiko.engine.api.expression.ExpressionEvaluator in project automatiko-engine by automatiko-io.

the class WorkItemNodeInstance method getSourceParameters.

@SuppressWarnings({ "unchecked", "rawtypes" })
protected Map<String, Object> getSourceParameters(DataAssociation association) {
    Map<String, Object> parameters = new HashMap<>();
    for (String sourceParam : association.getSources()) {
        Object parameterValue = null;
        VariableScopeInstance variableScopeInstance = (VariableScopeInstance) resolveContextInstance(VARIABLE_SCOPE, sourceParam);
        if (variableScopeInstance != null) {
            parameterValue = variableScopeInstance.getVariable(sourceParam);
        } else {
            try {
                ExpressionEvaluator evaluator = (ExpressionEvaluator) ((WorkflowProcess) getProcessInstance().getProcess()).getDefaultContext(ExpressionEvaluator.EXPRESSION_EVALUATOR);
                parameterValue = evaluator.evaluate(sourceParam, new NodeInstanceResolverFactory(this));
            } catch (Throwable t) {
                logger.warn("Could not find variable scope for variable {}", sourceParam);
            }
        }
        if (parameterValue != null) {
            parameters.put(sourceParam, parameterValue);
        }
    }
    return parameters;
}

Example 14 with ExpressionEvaluator

use of io.automatiko.engine.api.expression.ExpressionEvaluator in project automatiko-engine by automatiko-io.

the class WorkItemNodeInstance method triggerCompleted.

@SuppressWarnings({ "unchecked", "rawtypes" })
public void triggerCompleted(WorkItem workItem) {
    this.workItem = workItem;
    WorkItemNode workItemNode = getWorkItemNode();
    if (workItemNode != null && workItem.getState() == WorkItem.ABORTED) {
        cancel();
        continueToNextNode(io.automatiko.engine.workflow.process.core.Node.CONNECTION_DEFAULT_TYPE, workItemNode);
        return;
    } else if (workItemNode != null && workItem.getState() == WorkItem.COMPLETED) {
        validateWorkItemResultVariable(getProcessInstance().getProcessName(), workItemNode.getOutAssociations(), workItem);
        for (Iterator<DataAssociation> iterator = getWorkItemNode().getOutAssociations().iterator(); iterator.hasNext(); ) {
            DataAssociation association = iterator.next();
            if (association.getTransformation() != null) {
                Transformation transformation = association.getTransformation();
                DataTransformer transformer = DataTransformerRegistry.get().find(transformation.getLanguage());
                if (transformer != null) {
                    Map<String, Object> dataSet = new HashMap<String, Object>();
                    if (getNodeInstanceContainer() instanceof CompositeContextNodeInstance) {
                        VariableScopeInstance variableScopeInstance = (VariableScopeInstance) ((CompositeContextNodeInstance) getNodeInstanceContainer()).getContextInstance(VariableScope.VARIABLE_SCOPE);
                        if (variableScopeInstance != null) {
                            dataSet.putAll(variableScopeInstance.getVariables());
                        }
                    }
                    dataSet.putAll(workItem.getParameters());
                    dataSet.putAll(workItem.getResults());
                    Object parameterValue = transformer.transform(transformation.getCompiledExpression(), dataSet);
                    VariableScopeInstance variableScopeInstance = (VariableScopeInstance) resolveContextInstance(VARIABLE_SCOPE, association.getTarget());
                    if (variableScopeInstance != null && parameterValue != null) {
                        variableScopeInstance.getVariableScope().validateVariable(getProcessInstance().getProcessName(), association.getTarget(), parameterValue);
                        variableScopeInstance.setVariable(this, association.getTarget(), parameterValue);
                    } else {
                        logger.warn("Could not find variable scope for variable {}", association.getTarget());
                        logger.warn("when trying to complete Work Item {}", workItem.getName());
                        logger.warn("Continuing without setting variable.");
                    }
                    if (parameterValue != null) {
                        ((WorkItemImpl) workItem).setParameter(association.getTarget(), parameterValue);
                    }
                }
            } else if (association.getAssignments() == null || association.getAssignments().isEmpty()) {
                VariableScopeInstance variableScopeInstance = (VariableScopeInstance) resolveContextInstance(VARIABLE_SCOPE, association.getTarget());
                if (variableScopeInstance != null) {
                    Object value = workItem.getResult(association.getSources().get(0));
                    if (value == null) {
                        try {
                            ExpressionEvaluator evaluator = (ExpressionEvaluator) ((WorkflowProcess) getProcessInstance().getProcess()).getDefaultContext(ExpressionEvaluator.EXPRESSION_EVALUATOR);
                            value = evaluator.evaluate(association.getSources().get(0), new WorkItemResolverFactory(workItem));
                        } catch (Throwable t) {
                        // do nothing
                        }
                    }
                    Variable varDef = variableScopeInstance.getVariableScope().findVariable(association.getTarget());
                    DataType dataType = varDef.getType();
                    // exclude java.lang.Object as it is considered unknown type
                    if (!dataType.getStringType().endsWith("java.lang.Object") && !dataType.getStringType().endsWith("Object") && value instanceof String) {
                        value = dataType.readValue((String) value);
                    } else {
                        variableScopeInstance.getVariableScope().validateVariable(getProcessInstance().getProcessName(), association.getTarget(), value);
                    }
                    variableScopeInstance.setVariable(this, association.getTarget(), value);
                } else {
                    String output = association.getSources().get(0);
                    String target = association.getTarget();
                    Matcher matcher = PatternConstants.PARAMETER_MATCHER.matcher(target);
                    if (matcher.find()) {
                        String paramName = matcher.group(1);
                        String expression = VariableUtil.transformDotNotation(paramName, output);
                        NodeInstanceResolverFactory resolver = new NodeInstanceResolverFactory(this);
                        resolver.addExtraParameters(workItem.getResults());
                        Serializable compiled = MVEL.compileExpression(expression);
                        MVEL.executeExpression(compiled, resolver);
                        String varName = VariableUtil.nameFromDotNotation(paramName);
                        variableScopeInstance = (VariableScopeInstance) resolveContextInstance(VARIABLE_SCOPE, varName);
                        variableScopeInstance.setVariable(this, varName, variableScopeInstance.getVariable(varName));
                    } else {
                        logger.warn("Could not find variable scope for variable {}", association.getTarget());
                        logger.warn("when trying to complete Work Item {}", workItem.getName());
                        logger.warn("Continuing without setting variable.");
                    }
                }
            } else {
                try {
                    association.getAssignments().forEach(this::handleAssignment);
                } catch (Exception e) {
                    throw new RuntimeException(e);
                }
            }
        }
    }
    // handle dynamic nodes
    if (getNode() == null) {
        setMetaData("NodeType", workItem.getName());
        mapDynamicOutputData(workItem.getResults());
    }
    triggerCompleted();
}

Example 15 with ExpressionEvaluator

use of io.automatiko.engine.api.expression.ExpressionEvaluator in project automatiko-engine by automatiko-io.

the class RuleSetNodeInstance method evaluateParameters.

@SuppressWarnings({ "unchecked", "rawtypes" })
protected Map<String, Object> evaluateParameters(RuleSetNode ruleSetNode) {
    Map<String, Object> replacements = new HashMap<>();
    for (Iterator<DataAssociation> iterator = ruleSetNode.getInAssociations().iterator(); iterator.hasNext(); ) {
        DataAssociation association = iterator.next();
        if (association.getTransformation() != null) {
            Transformation transformation = association.getTransformation();
            DataTransformer transformer = DataTransformerRegistry.get().find(transformation.getLanguage());
            if (transformer != null) {
                Object parameterValue = transformer.transform(transformation.getCompiledExpression(), getSourceParameters(association));
                replacements.put(association.getTarget(), parameterValue);
            }
        } else if (association.getAssignments() == null || association.getAssignments().isEmpty()) {
            Object parameterValue = null;
            VariableScopeInstance variableScopeInstance = (VariableScopeInstance) resolveContextInstance(VariableScope.VARIABLE_SCOPE, association.getSources().get(0));
            if (variableScopeInstance != null) {
                parameterValue = variableScopeInstance.getVariable(association.getSources().get(0));
            } else {
                try {
                    ExpressionEvaluator evaluator = (ExpressionEvaluator) ((WorkflowProcess) getProcessInstance().getProcess()).getDefaultContext(ExpressionEvaluator.EXPRESSION_EVALUATOR);
                    parameterValue = evaluator.evaluate(association.getSources().get(0), new NodeInstanceResolverFactory(this));
                } catch (Throwable t) {
                    logger.error("Could not find variable scope for variable {}", association.getSources().get(0));
                    logger.error("when trying to execute RuleSetNode {}", ruleSetNode.getName());
                    logger.error("Continuing without setting parameter.");
                }
            }
            replacements.put(association.getTarget(), parameterValue);
        }
    }
    for (Map.Entry<String, Object> entry : ruleSetNode.getParameters().entrySet()) {
        if (entry.getValue() instanceof String) {
            Object value = resolveVariable(entry.getValue());
            replacements.put(entry.getKey(), value);
        }
    }
    return replacements;
}