/*
* Copyright (c) MuleSoft, Inc. All rights reserved. http://www.mulesoft.com
* The software in this package is published under the terms of the CPAL v1.0
* license, a copy of which has been included with this distribution in the
* LICENSE.txt file.
*/
package org.mule.runtime.config.spring.parsers.processors;
import org.mule.runtime.config.spring.parsers.PreProcessor;
import org.mule.runtime.config.spring.parsers.assembly.configuration.PropertyConfiguration;
import org.mule.runtime.config.spring.util.SpringXMLUtils;
import java.util.Arrays;
import java.util.HashSet;
import java.util.Iterator;
import java.util.Set;
import org.w3c.dom.Attr;
import org.w3c.dom.Element;
import org.w3c.dom.NamedNodeMap;
/**
* Throws an exception if any of the required attributes (after translation) are missing. Designed to cooperates with
* {@link org.mule.runtime.config.spring.parsers.delegate.AbstractSerialDelegatingDefinitionParser#addHandledException(Class)}
*/
public class RequireAttribute implements PreProcessor {
private Set required;
public RequireAttribute(String required) {
this(new String[] {required});
}
public RequireAttribute(String[] required) {
this.required = new HashSet(Arrays.asList(required));
}
public void preProcess(PropertyConfiguration config, Element element) {
NamedNodeMap attributes = element.getAttributes();
Iterator names = required.iterator();
while (names.hasNext()) {
String name = (String) names.next();
boolean found = false;
for (int i = 0; i < attributes.getLength() && !found; i++) {
String alias = SpringXMLUtils.attributeName((Attr) attributes.item(i));
// don't translate to alias because the error message is in terms of the attributes
// the user enters - we don't want to expose the details of translations
// found = name.equals(config.translateName(alias));
found = name.equals(alias);
}
if (!found) {
throw new RequireAttributeException("Attribute " + name + " is required here.");
}
}
}
public static class RequireAttributeException extends IllegalStateException {
public RequireAttributeException(String message) {
super(message);
}
}
}