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

Example 6 with ExpressionEvaluator

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

the class CompositeContextNodeInstance method processInputMappings.

@SuppressWarnings({ "unchecked", "rawtypes" })
protected void processInputMappings() {
    VariableScopeInstance compositeVariableScopeInstance = (VariableScopeInstance) getContextInstance(VARIABLE_SCOPE);
    for (DataAssociation association : getCompositeContextNode().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(), getProcessInstance().getVariables());
                if (parameterValue != null) {
                    compositeVariableScopeInstance.setVariable(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("Continuing without setting parameter.");
                }
            }
            if (parameterValue != null) {
                compositeVariableScopeInstance.setVariable(association.getTarget(), parameterValue);
            }
        } else {
            association.getAssignments().stream().forEach(assignment -> handleAssignment(assignment, compositeVariableScopeInstance));
        }
    }
}

Example 7 with ExpressionEvaluator

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

the class CompositeContextNodeInstance method triggerCompleted.

@SuppressWarnings({ "unchecked", "rawtypes" })
@Override
public void triggerCompleted(String outType) {
    VariableScopeInstance compositeVariableScopeInstance = (VariableScopeInstance) getContextInstance(VARIABLE_SCOPE);
    for (DataAssociation association : getCompositeContextNode().getOutAssociations()) {
        if (association.getTransformation() != null) {
            Transformation transformation = association.getTransformation();
            DataTransformer transformer = DataTransformerRegistry.get().find(transformation.getLanguage());
            if (transformer != null) {
                Object parameterValue = transformer.transform(transformation.getCompiledExpression(), compositeVariableScopeInstance.getVariables());
                if (parameterValue != null) {
                    getProcessInstance().setVariable(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("Continuing without setting parameter.");
                }
            }
            if (parameterValue != null) {
                getProcessInstance().setVariable(association.getTarget(), parameterValue);
            }
        } else {
            association.getAssignments().stream().forEach(assignment -> handleAssignment(assignment, compositeVariableScopeInstance));
        }
    }
    super.triggerCompleted(outType);
}

Example 8 with ExpressionEvaluator

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

the class DynamicUtils method internalAddDynamicWorkItem.

@SuppressWarnings({ "unchecked", "rawtypes" })
private static void internalAddDynamicWorkItem(final WorkflowProcessInstance processInstance, final DynamicNodeInstance dynamicContext, InternalProcessRuntime runtime, String workItemName, Map<String, Object> parameters) {
    final WorkItemImpl workItem = new WorkItemImpl();
    workItem.setState(WorkItem.ACTIVE);
    workItem.setProcessInstanceId(processInstance.getId());
    workItem.setParentProcessInstanceId(processInstance.getParentProcessInstanceId());
    workItem.setName(workItemName);
    workItem.setParameters(parameters);
    for (Map.Entry<String, Object> entry : workItem.getParameters().entrySet()) {
        if (entry.getValue() instanceof String) {
            String s = (String) entry.getValue();
            Object variableValue = null;
            String defaultValue = null;
            Matcher matcher = PatternConstants.PARAMETER_MATCHER.matcher(s);
            while (matcher.find()) {
                String paramName = matcher.group(1);
                if (paramName.contains(":")) {
                    String[] items = paramName.split(":");
                    paramName = items[0];
                    defaultValue = items[1];
                }
                variableValue = processInstance.getVariable(paramName);
                if (variableValue == null) {
                    try {
                        ExpressionEvaluator evaluator = (ExpressionEvaluator) ((WorkflowProcess) processInstance.getProcess()).getDefaultContext(ExpressionEvaluator.EXPRESSION_EVALUATOR);
                        variableValue = evaluator.evaluate(paramName, new ProcessInstanceResolverFactory(processInstance));
                    } catch (Throwable t) {
                        logger.error("Could not find variable scope for variable {}", paramName);
                        logger.error("when trying to replace variable in string for Dynamic Work Item {}", workItemName);
                        logger.error("Continuing without setting parameter.");
                    }
                }
            }
            if (variableValue != null) {
                workItem.setParameter(entry.getKey(), variableValue == null ? defaultValue : variableValue);
            }
        }
    }
    final WorkItemNodeInstance workItemNodeInstance = new WorkItemNodeInstance();
    workItemNodeInstance.setProcessInstance(processInstance);
    workItemNodeInstance.internalSetWorkItem(workItem);
    workItemNodeInstance.setMetaData("NodeType", workItemName);
    workItem.setNodeInstanceId(workItemNodeInstance.getId());
    workItemNodeInstance.setNodeInstanceContainer(dynamicContext == null ? processInstance : dynamicContext);
    workItemNodeInstance.addEventListeners();
    executeWorkItem(runtime, workItem, workItemNodeInstance);
}

Example 9 with ExpressionEvaluator

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

the class SubProcessNode method getSourceParameters.

@SuppressWarnings({ "unchecked", "rawtypes" })
protected Map<String, Object> getSourceParameters(ProcessContext ctx, DataAssociation association) {
    Map<String, Object> parameters = new HashMap<String, Object>();
    for (String sourceParam : association.getSources()) {
        Object parameterValue = null;
        VariableScopeInstance variableScopeInstance = (VariableScopeInstance) ((NodeInstance) ctx.getNodeInstance()).resolveContextInstance(VariableScope.VARIABLE_SCOPE, sourceParam);
        if (variableScopeInstance != null) {
            parameterValue = variableScopeInstance.getVariable(sourceParam);
        } else {
            try {
                ExpressionEvaluator evaluator = (ExpressionEvaluator) ((WorkflowProcess) ctx.getProcessInstance().getProcess()).getDefaultContext(ExpressionEvaluator.EXPRESSION_EVALUATOR);
                parameterValue = evaluator.evaluate(sourceParam, new NodeInstanceResolverFactory(((NodeInstance) ctx.getNodeInstance())));
            } catch (Throwable t) {
            }
        }
        if (parameterValue != null) {
            parameters.put(sourceParam, parameterValue);
        }
    }
    return parameters;
}

Example 10 with ExpressionEvaluator

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

the class SubProcessNode method internalSubProcess.

public void internalSubProcess(Collection<io.automatiko.engine.api.workflow.Process> availableProcesses) {
    io.automatiko.engine.api.workflow.Process process = (io.automatiko.engine.api.workflow.Process<Map<String, Object>>) availableProcesses.stream().filter(p -> p.id().equals(processId)).findFirst().orElse(null);
    if (process == null) {
        return;
    }
    this.subProcessFactory = new SubProcessFactory<Object>() {

        @SuppressWarnings({ "unchecked", "rawtypes" })
        @Override
        public Map<String, Object> bind(ProcessContext ctx) {
            Map<String, Object> parameters = new HashMap<String, Object>();
            for (Iterator<DataAssociation> iterator = getInAssociations().iterator(); iterator.hasNext(); ) {
                DataAssociation mapping = iterator.next();
                Object parameterValue = null;
                if (mapping.getTransformation() != null) {
                    Transformation transformation = mapping.getTransformation();
                    DataTransformer transformer = DataTransformerRegistry.get().find(transformation.getLanguage());
                    if (transformer != null) {
                        parameterValue = transformer.transform(transformation.getCompiledExpression(), getSourceParameters(ctx, mapping));
                    }
                } else if (mapping.getAssignments() == null || mapping.getAssignments().isEmpty()) {
                    VariableScopeInstance variableScopeInstance = (VariableScopeInstance) ((NodeInstance) ctx.getNodeInstance()).resolveContextInstance(VariableScope.VARIABLE_SCOPE, mapping.getSources().get(0));
                    if (variableScopeInstance != null) {
                        parameterValue = variableScopeInstance.getVariable(mapping.getSources().get(0));
                    } else {
                        try {
                            ExpressionEvaluator evaluator = (ExpressionEvaluator) ((WorkflowProcess) ctx.getProcessInstance().getProcess()).getDefaultContext(ExpressionEvaluator.EXPRESSION_EVALUATOR);
                            parameterValue = evaluator.evaluate(mapping.getSources().get(0), new NodeInstanceResolverFactory((NodeInstance) ctx.getNodeInstance()));
                        } catch (Throwable t) {
                            parameterValue = VariableUtil.resolveVariable(mapping.getSources().get(0), ctx.getNodeInstance());
                            if (parameterValue != null) {
                                parameters.put(mapping.getTarget(), parameterValue);
                            }
                        }
                    }
                } else {
                    mapping.getAssignments().stream().forEach(a -> handleAssignment(ctx, parameters, a));
                }
                if (parameterValue != null) {
                    parameters.put(mapping.getTarget(), parameterValue);
                }
            }
            return parameters;
        }

        @Override
        public ProcessInstance createInstance(Object model) {
            Model data = (Model) process.createModel();
            data.fromMap((Map<String, Object>) model);
            return process.createInstance(data);
        }

        @Override
        public void unbind(ProcessContext ctx, Object model) {
            Map<String, Object> result = ((Model) model).toMap();
            for (Iterator<DataAssociation> iterator = getOutAssociations().iterator(); iterator.hasNext(); ) {
                DataAssociation mapping = iterator.next();
                if (mapping.getTransformation() != null) {
                    Transformation transformation = mapping.getTransformation();
                    DataTransformer transformer = DataTransformerRegistry.get().find(transformation.getLanguage());
                    if (transformer != null) {
                        Map<String, Object> dataSet = new HashMap<String, Object>();
                        if (ctx.getNodeInstance().getNodeInstanceContainer() instanceof CompositeContextNodeInstance) {
                            VariableScopeInstance variableScopeInstance = (VariableScopeInstance) ((CompositeContextNodeInstance) ctx.getNodeInstance().getNodeInstanceContainer()).getContextInstance(VariableScope.VARIABLE_SCOPE);
                            if (variableScopeInstance != null) {
                                dataSet.putAll(variableScopeInstance.getVariables());
                            }
                        }
                        dataSet.putAll(result);
                        Object parameterValue = transformer.transform(transformation.getCompiledExpression(), dataSet);
                        VariableScopeInstance variableScopeInstance = (VariableScopeInstance) ((NodeInstance) ctx.getNodeInstance()).resolveContextInstance(VariableScope.VARIABLE_SCOPE, mapping.getTarget());
                        if (variableScopeInstance != null && parameterValue != null) {
                            variableScopeInstance.setVariable(ctx.getNodeInstance(), mapping.getTarget(), parameterValue);
                        }
                    }
                } else {
                    VariableScopeInstance variableScopeInstance = (VariableScopeInstance) ((NodeInstance) ctx.getNodeInstance()).resolveContextInstance(VariableScope.VARIABLE_SCOPE, mapping.getTarget());
                    if (variableScopeInstance != null) {
                        Object value = result.get(mapping.getSources().get(0));
                        if (value == null) {
                            try {
                                value = MVEL.eval(mapping.getSources().get(0), result);
                            } catch (Throwable t) {
                            // do nothing
                            }
                        }
                        variableScopeInstance.setVariable(ctx.getNodeInstance(), mapping.getTarget(), value);
                    } else {
                        String output = mapping.getSources().get(0);
                        String target = mapping.getTarget();
                        Matcher matcher = PatternConstants.PARAMETER_MATCHER.matcher(target);
                        if (matcher.find()) {
                            String paramName = matcher.group(1);
                            String expression = paramName + " = " + output;
                            Serializable compiled = MVEL.compileExpression(expression);
                            MVEL.executeExpression(compiled, result);
                        }
                    }
                }
            }
        }

        @SuppressWarnings("unchecked")
        @Override
        public void abortInstance(String instanceId) {
            process.instances().findById(instanceId).ifPresent(pi -> {
                try {
                    ((ProcessInstance<?>) pi).abort();
                } catch (IllegalArgumentException e) {
                // ignore it as this might be thrown in case of canceling already aborted instance
                }
            });
        }

        private void handleAssignment(ProcessContext ctx, Map<String, Object> output, Assignment assignment) {
            AssignmentAction action = (AssignmentAction) assignment.getMetaData("Action");
            try {
                WorkItemImpl workItem = new WorkItemImpl();
                action.execute(workItem, ctx);
                output.putAll(workItem.getParameters());
            } catch (WorkItemExecutionError e) {
                throw e;
            } catch (Exception e) {
                throw new RuntimeException("unable to execute Assignment", e);
            }
        }
    };
}