/*
* $Id: ValidatorConfigProcessor.java,v 1.5 2007/05/21 19:59:38 rlubke Exp $
*/
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package com.sun.faces.config.processor;
import com.sun.faces.config.ConfigurationException;
import com.sun.faces.config.Verifier;
import com.sun.faces.config.DocumentInfo;
import com.sun.faces.util.FacesLogger;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import org.w3c.dom.Document;
import javax.faces.application.Application;
import javax.faces.validator.Validator;
import javax.faces.validator.FacesValidator;
import javax.servlet.ServletContext;
import javax.xml.xpath.XPathExpressionException;
import java.text.MessageFormat;
import java.util.Iterator;
import java.util.Map;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.faces.validator.BeanValidator;
/**
* <p>
* This <code>ConfigProcessor</code> handles all elements defined under
* <code>/faces-config/valiator</code>.
* </p>
*/
public class ValidatorConfigProcessor extends AbstractConfigProcessor {
private static final Logger LOGGER = FacesLogger.CONFIG.getLogger();
/**
* <p>/faces-config/validator</p>
*/
private static final String VALIDATOR = "validator";
/**
* <p>/faces-config/component/validator-id</p>
*/
private static final String VALIDATOR_ID = "validator-id";
/**
* <p>/faces-config/component/validator-class</p>
*/
private static final String VALIDATOR_CLASS = "validator-class";
// -------------------------------------------- Methods from ConfigProcessor
/**
* @see ConfigProcessor#process(javax.servlet.ServletContext,com.sun.faces.config.DocumentInfo[])
*/
public void process(ServletContext sc, DocumentInfo[] documentInfos)
throws Exception {
// process annotated Validators first as Validators configured
// via config files take precedence
processAnnotations(FacesValidator.class);
for (int i = 0; i < documentInfos.length; i++) {
if (LOGGER.isLoggable(Level.FINE)) {
LOGGER.log(Level.FINE,
MessageFormat.format(
"Processing validator elements for document: ''{0}''",
documentInfos[i].getSourceURL()));
}
Document document = documentInfos[i].getDocument();
String namespace = document.getDocumentElement().getNamespaceURI();
NodeList validators = document.getDocumentElement()
.getElementsByTagNameNS(namespace, VALIDATOR);
if (validators != null && validators.getLength() > 0) {
addValidators(validators, namespace);
}
}
processDefaultValidatorIds();
invokeNext(sc, documentInfos);
}
// --------------------------------------------------------- Private Methods
private void processDefaultValidatorIds() {
Application app = getApplication();
Map<String,String> defaultValidatorInfo = app.getDefaultValidatorInfo();
for (Map.Entry<String,String> info : defaultValidatorInfo.entrySet()) {
String defaultValidatorId = info.getKey();
boolean found = false;
for (Iterator<String> registered = app.getValidatorIds(); registered.hasNext(); ) {
if (defaultValidatorId.equals(registered.next())) {
found = true;
break;
}
}
if (!found) {
String msg = MessageFormat.format("Default validator ''{0}'' does not reference a registered validator.", defaultValidatorId);
throw new ConfigurationException(msg);
}
}
}
private void addValidators(NodeList validators, String namespace)
throws XPathExpressionException {
Application app = getApplication();
Verifier verifier = Verifier.getCurrentInstance();
for (int i = 0, size = validators.getLength(); i < size; i++) {
Node validator = validators.item(i);
NodeList children = ((Element) validator)
.getElementsByTagNameNS(namespace, "*");
String validatorId = null;
String validatorClass = null;
for (int c = 0, csize = children.getLength(); c < csize; c++) {
Node n = children.item(c);
if (n.getNodeType() == Node.ELEMENT_NODE) {
if (VALIDATOR_ID.equals(n.getLocalName())) {
validatorId = getNodeText(n);
} else if (VALIDATOR_CLASS.equals(n.getLocalName())) {
validatorClass = getNodeText(n);
}
}
}
if (validatorId != null && validatorClass != null) {
if (LOGGER.isLoggable(Level.FINE)) {
LOGGER.log(Level.FINE,
MessageFormat.format(
"Calling Application.addValidator({0},{1})",
validatorId,
validatorClass));
}
boolean doAdd = true;
if (validatorId.equals(BeanValidator.VALIDATOR_ID)) {
doAdd = ApplicationConfigProcessor.isBeanValidatorAvailable();
}
if (doAdd) {
if (verifier != null) {
verifier.validateObject(Verifier.ObjectType.VALIDATOR,
validatorClass,
Validator.class);
}
app.addValidator(validatorId, validatorClass);
}
}
}
}
}