Examples with ContextExpression com.dexels.navajo.expression.api.ContextExpression used on opensource projects

Example 1 with ContextExpression

use of com.dexels.navajo.expression.api.ContextExpression in project navajo by Dexels.

the class ASTReactiveScriptNode method interpretToLambda.

@Override
public ContextExpression interpretToLambda(List<String> problems, String originalExpression, Function<String, FunctionClassification> functionClassifier, Function<String, Optional<Node>> mapResolver) {
    int start = hasHeader ? headers : 0;
    if (hasHeader) {
        for (int i = 0; i < headers; i++) {
            ASTKeyValueNode hdr = (ASTKeyValueNode) jjtGetChild(i);
            NamedExpression ne = (NamedExpression) hdr.interpretToLambda(problems, originalExpression, functionClassifier, mapResolver);
            String key = ne.name;
            headerMap.put(key, ne.apply());
        }
    }
    int count = jjtGetNumChildren();
    List<Node> unnamedPipes = new ArrayList<>();
    Map<String, Node> namedPipes = new HashMap<>();
    for (int i = start; i < count; i++) {
        Node child = jjtGetChild(i);
        // ASTReactivePipe pipe = null;
        if (child instanceof ASTPipeDefinition) {
            unnamedPipes.add((ASTPipeDefinition) child);
        } else if (child instanceof ASTKeyValueNode) {
            ASTKeyValueNode kvNode = (ASTKeyValueNode) child;
            String streamName = kvNode.val;
            Node namedPipe = kvNode.jjtGetChild(0);
            // assert value types perhaps? TODO
            namedPipes.put(streamName, namedPipe);
        }
    }
    List<ReactivePipeNode> pipes = unnamedPipes.stream().map(p -> (ReactivePipeNode) p.interpretToLambda(problems, originalExpression, functionClassifier, name -> {
        Optional<Node> initial = Optional.ofNullable(namedPipes.get(name));
        if (initial.isPresent()) {
            return initial;
        } else {
            return mapResolver.apply(name);
        }
    })).collect(Collectors.toList());
    return new ContextExpression() {

        @Override
        public Optional<String> returnType() {
            return Optional.of(Reactive.ReactiveItemType.REACTIVE_SCRIPT.toString());
        }

        @Override
        public boolean isLiteral() {
            return true;
        }

        @Override
        public String expression() {
            return "";
        }

        @Override
        public Operand apply(Navajo doc, Message parentMsg, Message parentParamMsg, Selection parentSel, MappableTreeNode mapNode, TipiLink tipiLink, Access access, Optional<ImmutableMessage> immutableMessage, Optional<ImmutableMessage> paramMessage) {
            return Operand.ofCustom(pipes, Reactive.ReactiveItemType.REACTIVE_SCRIPT.toString());
        }
    };
}

Example 2 with ContextExpression

use of com.dexels.navajo.expression.api.ContextExpression in project navajo by Dexels.

the class ASTDatePatternNode method interpretToLambda.

@Override
public ContextExpression interpretToLambda(List<String> problems, String expression, Function<String, FunctionClassification> functionClassifier, Function<String, Optional<Node>> mapResolver) {
    ContextExpression y = jjtGetChild(0).interpretToLambda(problems, expression, functionClassifier, mapResolver);
    checkOrAdd("Year (item 0) field should be an integer", problems, y.returnType(), Property.INTEGER_PROPERTY);
    ContextExpression m = jjtGetChild(1).interpretToLambda(problems, expression, functionClassifier, mapResolver);
    checkOrAdd("Month (item 1) field should be an integer", problems, y.returnType(), Property.INTEGER_PROPERTY);
    ContextExpression d = jjtGetChild(2).interpretToLambda(problems, expression, functionClassifier, mapResolver);
    checkOrAdd("Day (item 2) field should be an integer", problems, y.returnType(), Property.INTEGER_PROPERTY);
    ContextExpression h = jjtGetChild(3).interpretToLambda(problems, expression, functionClassifier, mapResolver);
    checkOrAdd("Hour (item 3) field should be an integer", problems, y.returnType(), Property.INTEGER_PROPERTY);
    ContextExpression min = jjtGetChild(4).interpretToLambda(problems, expression, functionClassifier, mapResolver);
    checkOrAdd("Minute (item 4) field should be an integer", problems, y.returnType(), Property.INTEGER_PROPERTY);
    ContextExpression s = jjtGetChild(5).interpretToLambda(problems, expression, functionClassifier, mapResolver);
    checkOrAdd("Second (item 5) field should be an integer", problems, y.returnType(), Property.INTEGER_PROPERTY);
    final boolean isLiteral = y.isLiteral() && m.isLiteral() && d.isLiteral() && h.isLiteral() && min.isLiteral() && s.isLiteral();
    return new ContextExpression() {

        @Override
        public boolean isLiteral() {
            return isLiteral;
        }

        @Override
        public Operand apply(Navajo doc, Message parentMsg, Message parentParamMsg, Selection parentSel, MappableTreeNode mapNode, TipiLink tipiLink, Access access, Optional<ImmutableMessage> immutableMessage, Optional<ImmutableMessage> paramMessage) {
            int yearT = ((Integer) y.apply(doc, parentMsg, parentParamMsg, parentSel, mapNode, tipiLink, access, immutableMessage, paramMessage).value).intValue();
            int monthT = ((Integer) m.apply(doc, parentMsg, parentParamMsg, parentSel, mapNode, tipiLink, access, immutableMessage, paramMessage).value).intValue();
            int dayT = ((Integer) d.apply(doc, parentMsg, parentParamMsg, parentSel, mapNode, tipiLink, access, immutableMessage, paramMessage).value).intValue();
            int hourT = ((Integer) h.apply(doc, parentMsg, parentParamMsg, parentSel, mapNode, tipiLink, access, immutableMessage, paramMessage).value).intValue();
            int minT = ((Integer) min.apply(doc, parentMsg, parentParamMsg, parentSel, mapNode, tipiLink, access, immutableMessage, paramMessage).value).intValue();
            int secT = ((Integer) s.apply(doc, parentMsg, parentParamMsg, parentSel, mapNode, tipiLink, access, immutableMessage, paramMessage).value).intValue();
            return Operand.ofDatePattern(new DatePattern(yearT, monthT, dayT, hourT, minT, secT, true));
        }

        @Override
        public Optional<String> returnType() {
            return Optional.of(Property.DATE_PATTERN_PROPERTY);
        }

        @Override
        public String expression() {
            return expression;
        }
    };
}

Example 3 with ContextExpression

use of com.dexels.navajo.expression.api.ContextExpression in project navajo by Dexels.

the class ASTFunctionNode method interpretToLambda.

@Override
public ContextExpression interpretToLambda(List<String> problems, String expression, Function<String, FunctionClassification> functionClassifier, Function<String, Optional<Node>> mapResolver) {
    List<ContextExpression> unnamed = new LinkedList<>();
    // TODO make lazy?
    Map<String, ContextExpression> named = new HashMap<>();
    for (int i = 0; i < jjtGetNumChildren(); i++) {
        Node sn = jjtGetChild(i);
        ContextExpression cn = sn.interpretToLambda(problems, expression, functionClassifier, mapResolver);
        if (cn instanceof NamedExpression) {
            NamedExpression ne = (NamedExpression) cn;
            named.put(ne.name, ne.expression);
        } else {
            unnamed.add(cn);
        }
    }
    FunctionClassification mode = functionClassifier.apply(functionName);
    switch(mode) {
        case REACTIVE_HEADER:
            break;
        case REACTIVE_SOURCE:
            return new ReactiveParseItem(functionName, Reactive.ReactiveItemType.REACTIVE_SOURCE, named, unnamed, expression, this);
        case REACTIVE_TRANSFORMER:
            return new ReactiveParseItem(functionName, Reactive.ReactiveItemType.REACTIVE_TRANSFORMER, named, unnamed, expression, this);
        case REACTIVE_REDUCER:
            return new ReactiveParseItem(functionName, Reactive.ReactiveItemType.REACTIVE_MAPPER, named, unnamed, expression, this);
        case DEFAULT:
        default:
    }
    return resolveNormalFunction(unnamed, named, problems, expression);
}

Example 4 with ContextExpression

use of com.dexels.navajo.expression.api.ContextExpression in project navajo by Dexels.

the class ASTForAllNode method interpretToLambda.

@Override
public ContextExpression interpretToLambda(List<String> problems, String expression, Function<String, FunctionClassification> functionClassifier, Function<String, Optional<Node>> mapResolver) {
    return new ContextExpression() {

        @Override
        public boolean isLiteral() {
            return false;
        }

        @Override
        public Operand apply(Navajo doc, Message parentMsg, Message parentParamMsg, Selection parentSel, MappableTreeNode mapNode, TipiLink tipiLink, Access access, Optional<ImmutableMessage> immutableMessage, Optional<ImmutableMessage> paramMessage) {
            List<String> problems = new ArrayList<>();
            ContextExpression a = jjtGetChild(0).interpretToLambda(problems, expression, functionClassifier, mapResolver);
            ContextExpression b = jjtGetChild(1).interpretToLambda(problems, expression, functionClassifier, mapResolver);
            if (!problems.isEmpty()) {
                throw new TMLExpressionException(problems, expression);
            }
            return interpret(doc, parentMsg, parentParamMsg, parentSel, mapNode, tipiLink, access, immutableMessage, paramMessage, a, b);
        }

        @Override
        public Optional<String> returnType() {
            return Optional.empty();
        }

        @Override
        public String expression() {
            return expression;
        }
    };
}

Example 5 with ContextExpression

use of com.dexels.navajo.expression.api.ContextExpression in project navajo by Dexels.

the class ASTPipeDefinition method transformerElements.

@SuppressWarnings("unchecked")
private List<Object> transformerElements(List<String> problems, String originalExpression, Function<String, FunctionClassification> functionClassifier, Function<String, Optional<Node>> mapResolver) {
    int count = jjtGetNumChildren();
    List<Object> pipeElements = new ArrayList<>();
    for (int i = (partial ? 0 : 1); i < count; i++) {
        ContextExpression interpretToLambda = jjtGetChild(i).interpretToLambda(problems, originalExpression, functionClassifier, mapResolver);
        Object result = interpretToLambda.apply().value;
        if (result instanceof Function) {
            Function<StreamScriptContext, Function<DataItem, DataItem>> merger = (Function<StreamScriptContext, Function<DataItem, DataItem>>) result;
            pipeElements.add(merger);
        } else if (result instanceof ReactiveTransformer) {
            ReactiveTransformer transformer = (ReactiveTransformer) result;
            pipeElements.add(transformer);
        } else {
            logger.warn("huh? {}", result);
        // something weird
        }
    }
    return pipeElements;
}