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package com.sun.faces.facelets.tag;
import com.sun.faces.util.FacesLogger;
import com.sun.faces.util.Util;
import javax.faces.view.facelets.*;
import java.beans.IntrospectionException;
import java.util.*;
import java.util.logging.Level;
import java.util.logging.Logger;
import java.lang.ref.WeakReference;
/**
*
* @author Jacob Hookom
* @version $Id: MetaRulesetImpl.java 12514 2013-09-10 17:00:23Z mriem $
*/
public class MetaRulesetImpl extends MetaRuleset {
private final static Logger LOGGER = FacesLogger.FACELETS_META.getLogger();
private final static WeakHashMap> metadata =
new WeakHashMap>();
private final Tag tag;
private final Class type;
private final Map attributes;
private final List mappers;
private final List rules;
// ------------------------------------------------------------ Constructors
public MetaRulesetImpl(Tag tag, Class type) {
this.tag = tag;
this.type = type;
this.attributes = new HashMap();
this.mappers = new ArrayList();
this.rules = new ArrayList();
// setup attributes
TagAttribute[] attrs = this.tag.getAttributes().getAll();
for (int i = 0; i < attrs.length; i++) {
if (attrs[i].getLocalName().equals("class")) {
attributes.put("styleClass", attrs[i]);
} else {
attributes.put(attrs[i].getLocalName(), attrs[i]);
}
}
// add default rules
this.rules.add(BeanPropertyTagRule.Instance);
}
// ---------------------------------------------------------- Public Methods
public MetaRuleset ignore(String attribute) {
Util.notNull("attribute", attribute);
this.attributes.remove(attribute);
return this;
}
public MetaRuleset alias(String attribute, String property) {
Util.notNull("attribute", attribute);
Util.notNull("property", property);
TagAttribute attr = this.attributes.remove(attribute);
if (attr != null) {
this.attributes.put(property, attr);
}
return this;
}
public MetaRuleset add(Metadata mapper) {
Util.notNull("mapper", mapper);
if (!this.mappers.contains(mapper)) {
this.mappers.add(mapper);
}
return this;
}
public MetaRuleset addRule(MetaRule rule) {
Util.notNull("rule", rule);
this.rules.add(rule);
return this;
}
public Metadata finish() {
if (!this.attributes.isEmpty()) {
if (this.rules.isEmpty()) {
if (LOGGER.isLoggable(Level.SEVERE)) {
for (Iterator itr = this.attributes.values().iterator(); itr.hasNext(); ) {
LOGGER.severe(itr.next() + " Unhandled by MetaTagHandler for type "+this.type.getName());
}
}
} else {
MetadataTarget target = this.getMetadataTarget();
// now iterate over attributes
int ruleEnd = this.rules.size() - 1;
for (Map.Entry entry : attributes.entrySet()) {
Metadata data = null;
int i = ruleEnd;
while (data == null && i >= 0) {
MetaRule rule = this.rules.get(i);
data = rule.applyRule(entry.getKey(), entry.getValue(), target);
i--;
}
if (data == null) {
if (LOGGER.isLoggable(Level.SEVERE)) {
LOGGER.severe(entry.getValue() + " Unhandled by MetaTagHandler for type "+this.type.getName());
}
} else {
this.mappers.add(data);
}
}
}
}
if (this.mappers.isEmpty()) {
return NONE;
} else {
return new MetadataImpl(this.mappers.toArray(new Metadata[this.mappers.size()]));
}
}
public MetaRuleset ignoreAll() {
this.attributes.clear();
return this;
}
// ------------------------------------------------------- Protected Methods
protected MetadataTarget getMetadataTarget() {
WeakReference metaRef = metadata.get(type);
MetadataTarget meta = metaRef == null ? null : metaRef.get();
if (meta == null) {
try {
meta = new MetadataTargetImpl(type);
} catch (IntrospectionException e) {
throw new TagException(this.tag,
"Error Creating TargetMetadata", e);
}
metadata.put(type, new WeakReference(meta));
}
return meta;
}
// --------------------------------------------------------- Private Methods
private final static Metadata NONE = new Metadata() {
public void applyMetadata(FaceletContext ctx, Object instance) {
// do nothing
}
};
}