Examples of org.apache.commons.jexl2.MapContext

org.apache.commons.jexl2.parser.JexlNode
Wraps a map in a context.
Each entry in the map is considered a variable name, value pair.

     *
     * @return the newly created context
     */
    private JexlContext createContext()
    {
        JexlContext ctx = new MapContext();
        initializeContext(ctx);
        return ctx;
    }

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   * @return String - the formatted string resulting from the expression, or null if the formatting fails.
   */
  @Override
  public String formatName(Result result) {
    String formatted;
    JexlContext context = new MapContext();


    this.populateContext(context, result);
    try {
      formatted = (String) this.parsedExpr.evaluate(context);
    } catch (JexlException jexlExc) {

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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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    /** {@inheritDoc} */
    public Object visit(ASTForeachStatement node, Object data) {
        Object result = null;
        /* first objectNode is the loop variable */
        ASTReference loopReference = (ASTReference) node.jjtGetChild(0);
        ASTIdentifier loopVariable = (ASTIdentifier) loopReference.jjtGetChild(0);
        /* second objectNode is the variable to iterate */
        Object iterableValue = node.jjtGetChild(1).jjtAccept(this, data);
        // make sure there is a value to iterate on and a statement to execute
        if (iterableValue != null && node.jjtGetNumChildren() >= 3) {
            /* third objectNode is the statement to execute */

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    /** {@inheritDoc} */
    public Object visit(ASTForeachStatement node, Object data) {
        Object result = null;
        /* first objectNode is the loop variable */
        ASTReference loopReference = (ASTReference) node.jjtGetChild(0);
        ASTIdentifier loopVariable = (ASTIdentifier) loopReference.jjtGetChild(0);
        /* second objectNode is the variable to iterate */
        Object iterableValue = node.jjtGetChild(1).jjtAccept(this, data);
        // make sure there is a value to iterate on and a statement to execute
        if (iterableValue != null && node.jjtGetNumChildren() >= 3) {
            /* third objectNode is the statement to execute */

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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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    }
    
    /** {@inheritDoc} */
    public Object visit(ASTAssignment node, Object data) {
        // left contains the reference to assign to
        JexlNode left = node.jjtGetChild(0);
        if (!(left instanceof ASTReference)) {
            throw new JexlException(left, "illegal assignment form");
        }
        // right is the value expression to assign
        Object right = node.jjtGetChild(1).jjtAccept(this, data);


        // determine initial object & property:
        JexlNode objectNode = null;
        Object object = null;
        JexlNode propertyNode = null;
        Object property = null;
        boolean isVariable = true;
        int v = 0;
        StringBuilder variableName = null;
        // 1: follow children till penultimate

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            return arithmetic.divide(left, right);
        } catch (RuntimeException xrt) {
            if (!strict && xrt instanceof ArithmeticException) {
                return new Double(0.0);
            }
            JexlNode xnode = findNullOperand(xrt, node, left, right);
            throw new JexlException(xnode, "divide error", xrt);
        }
    }

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