Examples of com.volantis.xml.expression.ExpressionScope

com.volantis.xml.expression.ExpressionScope
An expression scope defines mappings from names to various types of objects.
Warning: This is a facade provided for use by user code, not for implementation in user code. User implementations of this interface are highly likely to be incompatible with future releases of the product at both binary and source levels.

Currently the only objects that are stored in scopes are variables.

Scopes are nested and if an object cannot be found in one scope then it will look in the enclosing scope. New mappings are added to the current scope and will be removed when the scope is discarded.
@volantis-api-include-in PublicAPI @volantis-api-include-in ProfessionalServicesAPI @volantis-api-include-in InternalAPI

     * defined, this returns the global expression scope.
     *
     * @return the current expression scope
     */
    public ExpressionScope getCurrentScope() {
        ExpressionScope currentScope = globalScope;


        if (frames.size() > 0) {
            currentScope = (ExpressionScope)frames.peek();
        }

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        return currentScope;
    }


    // javadoc inherited
    public void declareVariable(String variable, Object value) {
        ExpressionScope scope = getCurrentScope();


        if (scope == null) {
            throw new IllegalStateException(
                    "An attempt has been made to declare a variable " +
                    "while there is no current expression scope");
        } else if (!(value instanceof Value)) {
            throw new IllegalArgumentException(
                    "An attempt has been made to declare a variable " +
                    "with a value that doesn't implement " +
                    Value.class.getName() +
                    " (" + value.getClass().getName() + ")");
        } else {
            ExpandedName name = expandName(variable);


            scope.declareVariable(name, (Value)value);
        }
    }

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        pendingVariableDeclarations.put(name, initialValue);
    }


    // javadoc inherited
    public void executePendingVariableDeclarations() {
        final ExpressionScope expressionScope =
            getPipelineContext().getExpressionContext().getCurrentScope();
        for (Iterator iter = pendingVariableDeclarations.entrySet().iterator();
                iter.hasNext(); ) {
            final Map.Entry entry = (Map.Entry) iter.next();
            final ExpandedName name = (ExpandedName) entry.getKey();
            final Value initialValue = (Value) entry.getValue();
            expressionScope.declareVariable(name, initialValue);
        }
    }

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Related Classes of com.volantis.xml.expression.ExpressionScope

com.volantis.xml.expression.impl.jxpath.JXPathQualifiedVariables

com.volantis.xml.pipeline.sax.impl.template.TemplateProcess

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