import org.springframework.beans.factory.parsing.ReaderContext; //导入依赖的package包/类
<T extends CacheOperation> T merge(Element element, ReaderContext readerCtx, T op) {
	String cache = element.getAttribute("cache");

	// sanity check
	String[] localCaches = caches;
	if (StringUtils.hasText(cache)) {
		localCaches = StringUtils.commaDelimitedListToStringArray(cache.trim());
	} else {
		if (caches == null) {
			readerCtx.error("No cache specified specified for " + element.getNodeName(), element);
		}
	}
	op.setCacheNames(localCaches);

	op.setKey(getAttributeValue(element, "key", this.key));
	op.setCondition(getAttributeValue(element, "condition", this.condition));

	return op;
}
 

import org.springframework.beans.factory.parsing.ReaderContext; //导入依赖的package包/类
<T extends CacheOperation> T merge(Element element, ReaderContext readerCtx, T op) {
	String cache = element.getAttribute("cache");

	// sanity check
	String[] localCaches = caches;
	if (StringUtils.hasText(cache)) {
		localCaches = StringUtils.commaDelimitedListToStringArray(cache.trim());
	}
	else {
		if (caches == null) {
			readerCtx.error("No cache specified specified for " + element.getNodeName(), element);
		}
	}
	op.setCacheNames(localCaches);

	op.setKey(getAttributeValue(element, "key", this.key));
	op.setKeyGenerator(getAttributeValue(element, "key-generator", this.keyGenerator));
	op.setCacheManager(getAttributeValue(element, "cache-manager", this.cacheManager));
	op.setCondition(getAttributeValue(element, "condition", this.condition));

	if (StringUtils.hasText(op.getKey()) && StringUtils.hasText(op.getKeyGenerator())) {
		throw new IllegalStateException("Invalid cache advice configuration on '"
				+ element.toString() + "'. Both 'key' and 'keyGenerator' attributes have been set. " +
				"These attributes are mutually exclusive: either set the SpEL expression used to" +
				"compute the key at runtime or set the name of the KeyGenerator bean to use.");
	}

	return op;
}
 

import org.springframework.beans.factory.parsing.ReaderContext; //导入依赖的package包/类
<T extends CacheOperation.Builder> T merge(Element element, ReaderContext readerCtx, T builder) {
	String cache = element.getAttribute("cache");

	// sanity check
	String[] localCaches = this.caches;
	if (StringUtils.hasText(cache)) {
		localCaches = StringUtils.commaDelimitedListToStringArray(cache.trim());
	}
	else {
		if (this.caches == null) {
			readerCtx.error("No cache specified for " + element.getNodeName(), element);
		}
	}
	builder.setCacheNames(localCaches);

	builder.setKey(getAttributeValue(element, "key", this.key));
	builder.setKeyGenerator(getAttributeValue(element, "key-generator", this.keyGenerator));
	builder.setCacheManager(getAttributeValue(element, "cache-manager", this.cacheManager));
	builder.setCondition(getAttributeValue(element, "condition", this.condition));

	if (StringUtils.hasText(builder.getKey()) && StringUtils.hasText(builder.getKeyGenerator())) {
		throw new IllegalStateException("Invalid cache advice configuration on '"
				+ element.toString() + "'. Both 'key' and 'keyGenerator' attributes have been set. " +
				"These attributes are mutually exclusive: either set the SpEL expression used to" +
				"compute the key at runtime or set the name of the KeyGenerator bean to use.");
	}

	return builder;
}
 

import org.springframework.beans.factory.parsing.ReaderContext; //导入依赖的package包/类
private void handleError(Exception e, Element source, ParserContext parser) {
	ReaderContext reader = parser.getReaderContext();
	reader.error(e.getMessage(), reader.extractSource(source), e.getCause());
}