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INT-2191 - XPath Expression Namespace Parser: Improve Validation

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This commit is contained in:
Gunnar Hillert
2011-10-20 16:59:15 -04:00
parent 950fcf9a21
commit 18aceb73fc
2 changed files with 109 additions and 31 deletions
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44
spring-integration-xml/src/main/java/org/springframework/integration/xml/config/XPathExpressionParser.java
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@@ -17,12 +17,9 @@
package org.springframework.integration.xml.config;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import org.springframework.beans.factory.config.BeanDefinition;
import org.springframework.beans.factory.support.BeanDefinitionBuilder;
import org.springframework.beans.factory.xml.AbstractSingleBeanDefinitionParser;
@@ -30,11 +27,13 @@ import org.springframework.beans.factory.xml.BeanDefinitionParserDelegate;
import org.springframework.beans.factory.xml.ParserContext;
import org.springframework.util.Assert;
import org.springframework.util.StringUtils;
import org.springframework.util.xml.DomUtils;
import org.springframework.xml.xpath.XPathExpressionFactory;
import org.w3c.dom.Element;
/**
* Parser for the <xpath-expression> element.
*
*
* @author Jonas Partner
*/
public class XPathExpressionParser extends AbstractSingleBeanDefinitionParser {
@@ -61,36 +60,37 @@ public class XPathExpressionParser extends AbstractSingleBeanDefinitionParser {
String nsPrefix = element.getAttribute("ns-prefix");
String nsUri = element.getAttribute("ns-uri");
String namespaceMapRef = element.getAttribute("namespace-map");
List<Element> mapElements = DomUtils.getChildElementsByTagName(element, "map");
boolean prefixProvided = StringUtils.hasText(nsPrefix);
boolean namespaceProvided = StringUtils.hasText(nsUri);
boolean namespaceMapProvided = StringUtils.hasText(namespaceMapRef);
boolean mapSubElementProvided = !mapElements.isEmpty();
if (prefixProvided || namespaceProvided) {
Assert.isTrue(prefixProvided && namespaceProvided,
"Both 'ns-prefix' and 'ns-uri' must be specified if one is specified.");
Assert.isTrue(!namespaceMapProvided, "It is not valid to specify both namespace and namespace-map.");
Assert.isTrue(!namespaceMapProvided, "It is not valid to specify both, the namespace attributes ('ns-prefix' and 'ns-uri') and the 'namespace-map' attribute.");
Assert.isTrue(!mapSubElementProvided, "It is not valid to specify both, the namespace attributes ('ns-prefix' and 'ns-uri') and the 'map' sub-element.");
} else if (mapSubElementProvided) {
Assert.isTrue(!namespaceMapProvided, "It is not valid to specify both, the 'namespace-map' attribute and the 'map' sub-element.");
}
builder.setFactoryMethod("createXPathExpression");
builder.addConstructorArgValue(expression);
if (prefixProvided) {
Map<String, String> namespaceMap = new HashMap<String, String>();
Map<String, String> namespaceMap = new HashMap<String, String>(1);
namespaceMap.put(nsPrefix, nsUri);
builder.addConstructorArgValue(namespaceMap);
}
else if (StringUtils.hasText(namespaceMapRef)) {
} else if (namespaceMapProvided) {
builder.addConstructorArgReference(namespaceMapRef);
}
else if (element.getChildNodes().getLength() > 0) {
NodeList nodeList = element.getChildNodes();
Element mapElement = null;
int elementCount = 0;
for (int i = 0; i < nodeList.getLength(); i++) {
Node currentNode = nodeList.item(i);
if (currentNode.getNodeType() == Node.ELEMENT_NODE) {
mapElement = (Element) currentNode;
elementCount++;
}
}
Assert.isTrue(elementCount == 1, "only one namespace map child allowed");
} else if (mapSubElementProvided) {
Element mapElement = mapElements.get(0);
if (mapElement != null) {
builder.addConstructorArgValue(this.parseNamespaceMapElement(
mapElement, parserContext, builder.getBeanDefinition()));