Package org.apache.commons.jexl2

Examples of org.apache.commons.jexl2.JexlContext

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        return result;
    }

    public JexlContext addFieldsToContext(final Object attributable, final JexlContext jexlContext) {
        JexlContext context = jexlContext == null
                ? new MapContext()
                : jexlContext;

        final Field[] fields = attributable.getClass().getDeclaredFields();
        for (int i = 0; i < fields.length; i++) {
            try {
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    public JexlContext addAttrsToContext(final Collection<? extends AbstractAttr> attributes,
            final JexlContext jexlContext) {

        JexlContext context = jexlContext == null
                ? new MapContext()
                : jexlContext;

        for (AbstractAttr attr : attributes) {
            List<String> attributeValues = attr.getValuesAsStrings();
            String expressionValue = attributeValues.isEmpty()
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    public JexlContext addDerAttrsToContext(final Collection<? extends AbstractDerAttr> derAttrs,
            final Collection<? extends AbstractAttr> attrs, final JexlContext jexlContext) {

        JexlContext context = jexlContext == null
                ? new MapContext()
                : jexlContext;

        for (AbstractDerAttr derAttr : derAttrs) {
            String expressionValue = derAttr.getValue(attrs);
            if (expressionValue == null) {
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    public JexlContext addVirAttrsToContext(final Collection<? extends AbstractVirAttr> virAttrs,
            final JexlContext jexlContext) {

        JexlContext context = jexlContext == null
                ? new MapContext()
                : jexlContext;

        for (AbstractVirAttr virAttr : virAttrs) {
            List<String> attributeValues = virAttr.getValues();
            String expressionValue = attributeValues.isEmpty()
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        return context;
    }

    public String evaluate(final String expression, final AbstractAttributableTO attributableTO) {
        final JexlContext context = new MapContext();

        addFieldsToContext(attributableTO, context);

        for (AttributeTO attr : attributableTO.getAttributes()) {
            List<String> values = attr.getValues();
            String expressionValue = values.isEmpty()
                    ? ""
                    : values.get(0);

            LOG.debug("Add attribute {} with value {}", attr.getSchema(), expressionValue);

            context.set(attr.getSchema(), expressionValue);
        }
        for (AttributeTO derAttr : attributableTO.getDerivedAttributes()) {
            List<String> values = derAttr.getValues();
            String expressionValue = values.isEmpty()
                    ? ""
                    : values.get(0);

            LOG.debug("Add derived attribute {} with value {}", derAttr.getSchema(), expressionValue);

            context.set(derAttr.getSchema(), expressionValue);
        }
        for (AttributeTO virAttr : attributableTO.getVirtualAttributes()) {
            List<String> values = virAttr.getValues();
            String expressionValue = values.isEmpty()
                    ? ""
                    : values.get(0);

            LOG.debug("Add virtual attribute {} with value {}", virAttr.getSchema(), expressionValue);

            context.set(virAttr.getSchema(), expressionValue);
        }

        // Evaluate expression using the context prepared before
        return evaluate(expression, context);
    }
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        } else {
            jexlExpression = getOldExpression(jexlEngine);
        }
       
        final Map<String, Object> contextMap = contextManager.getContext(context);
        final JexlContext jexlContext = new MapContext(contextMap);

        return Boolean.TRUE.equals(jexlExpression.evaluate(jexlContext)) ? FeatureState.ENABLED : FeatureState.DISABLED;
    }
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    }

    // JEXL-52: can be implemented by deriving Interpreter.{g,s}etAttribute; later
    public void test52base() throws Exception {
        JexlEngine jexl = new JexlEngine();
        Uberspect uber = jexl.getUberspect();
        // most likely, call will be in an Interpreter, getUberspect
        String[] names = ((Introspector) uber).getMethodNames(Another.class);
        assertTrue("should find methods", names.length > 0);
        int found = 0;
        for (String name : names) {
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            property = ((ASTIntegerLiteral) propertyNode).getLiteral();
            antVar = true;
        } else if (propertyNode instanceof ASTArrayAccess) {
            // first objectNode is the identifier
            objectNode = propertyNode;
            ASTArrayAccess narray = (ASTArrayAccess) objectNode;
            Object nobject = narray.jjtGetChild(0).jjtAccept(this, object);
            if (nobject == null) {
                throw new JexlException(objectNode, "array element is null");
            } else {
                object = nobject;
            }
            // can have multiple nodes - either an expression, integer literal or
            // reference
            last = narray.jjtGetNumChildren() - 1;
            for (int i = 1; i < last; i++) {
                objectNode = narray.jjtGetChild(i);
                if (objectNode instanceof JexlNode.Literal<?>) {
                    object = objectNode.jjtAccept(this, object);
                } else {
                    Object index = objectNode.jjtAccept(this, null);
                    object = getAttribute(object, index, objectNode);
                }
            }
            property = narray.jjtGetChild(last).jjtAccept(this, null);
        } else {
            throw new JexlException(objectNode, "illegal assignment form");
        }
        // deal with ant variable; set context
        if (antVar) {
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         */
        Object left = node.jjtGetChild(0).jjtAccept(this, data);
        for(int c = 2, size = node.jjtGetNumChildren(); c < size; c += 2) {
            Object right = node.jjtGetChild(c).jjtAccept(this, data);
            try {
                JexlNode op = node.jjtGetChild(c - 1);
                if (op instanceof ASTAdditiveOperator) {
                    String which = ((ASTAdditiveOperator) op).image;
                    if ("+".equals(which)) {
                        left = arithmetic.add(left, right);
                        continue;
                    }
                    if ("-".equals(which)) {
                        left = arithmetic.subtract(left, right);
                        continue;
                    }
                    throw new UnsupportedOperationException("unknown operator " + which);
                }
                throw new IllegalArgumentException("unknown operator " + op);
            } catch (RuntimeException xrt) {
                JexlNode xnode = findNullOperand(xrt, node, left, right);
                throw new JexlException(xnode, "+/- error", xrt);
            }
        }
        return left;
    }
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        Object object = node.jjtGetChild(0).jjtAccept(this, data);
        // can have multiple nodes - either an expression, integer literal or
        // reference
        int numChildren = node.jjtGetNumChildren();
        for (int i = 1; i < numChildren; i++) {
            JexlNode nindex = node.jjtGetChild(i);
            if (nindex instanceof JexlNode.Literal<?>) {
                object = nindex.jjtAccept(this, object);
            } else {
                Object index = nindex.jjtAccept(this, null);
                object = getAttribute(object, index, nindex);
            }
        }

        return object;
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