Example usage for org.springframework.beans.factory.xml BeanDefinitionParserDelegate REF_ATTRIBUTE

Introduction

In this page you can find the example usage for org.springframework.beans.factory.xml BeanDefinitionParserDelegate REF_ATTRIBUTE.

Prototype

String REF_ATTRIBUTE

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Usage

From source file:org.eclipse.gemini.blueprint.blueprint.config.internal.BlueprintParser.java

private Object parsePropertyValue(Element ele, BeanDefinition bd, String propertyName) {
    String elementName = (propertyName != null) ? "<property> element for property '" + propertyName + "'"
            : "<constructor-arg> element";

    // Should only have one child element: ref, value, list, etc.
    NodeList nl = ele.getChildNodes();
    Element subElement = null;/*from  ww w .j  a va2 s .  c o m*/
    for (int i = 0; i < nl.getLength(); i++) {
        Node node = nl.item(i);
        if (node instanceof Element
                && !DomUtils.nodeNameEquals(node, BeanDefinitionParserDelegate.DESCRIPTION_ELEMENT)) {
            // Child element is what we're looking for.
            if (subElement != null) {
                error(elementName + " must not contain more than one sub-element", ele);
            } else {
                subElement = (Element) node;
            }
        }
    }

    boolean hasRefAttribute = ele.hasAttribute(BeanDefinitionParserDelegate.REF_ATTRIBUTE);
    boolean hasValueAttribute = ele.hasAttribute(BeanDefinitionParserDelegate.VALUE_ATTRIBUTE);
    if ((hasRefAttribute && hasValueAttribute)
            || ((hasRefAttribute || hasValueAttribute) && subElement != null)) {
        error(elementName
                + " is only allowed to contain either 'ref' attribute OR 'value' attribute OR sub-element",
                ele);
    }

    if (hasRefAttribute) {
        String refName = ele.getAttribute(BeanDefinitionParserDelegate.REF_ATTRIBUTE);
        if (!StringUtils.hasText(refName)) {
            error(elementName + " contains empty 'ref' attribute", ele);
        }
        RuntimeBeanReference ref = new RuntimeBeanReference(refName);
        ref.setSource(parserContext.extractSource(ele));
        return ref;
    } else if (hasValueAttribute) {
        TypedStringValue valueHolder = new TypedStringValue(
                ele.getAttribute(BeanDefinitionParserDelegate.VALUE_ATTRIBUTE));
        valueHolder.setSource(parserContext.extractSource(ele));
        return valueHolder;
    } else if (subElement != null) {
        return parsePropertySubElement(subElement, bd, null);
    } else {
        // Neither child element nor "ref" or "value" attribute found.
        error(elementName + " must specify a ref or value", ele);
        return null;
    }
}

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