com.cybernostics.jsp2thymeleaf.api.elements.AvailableNamespaces.java Source code

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Here is the source code for com.cybernostics.jsp2thymeleaf.api.elements.AvailableNamespaces.java

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package com.cybernostics.jsp2thymeleaf.api.elements;

import java.util.Collection;
import java.util.Map;
import java.util.Optional;
import java.util.TreeMap;
import org.jdom2.Namespace;

/**
 * Keeps a list of namespaces for dom elements which actually occur in the
 * transformed document.
 *
 * @see AvailableNamespaces
 * @author jason
 */
public class AvailableNamespaces {

    private static final Map<String, Namespace> namespaces = new TreeMap<>();

    private AvailableNamespaces() {

    }

    public static void add(Namespace ns) {
        namespaces.putIfAbsent(ns.getURI(), ns);
    }

    public static Collection<Namespace> get() {
        return namespaces.values();
    }

    public static Optional<Namespace> fromUri(String uri) {
        return Optional.of(namespaces.getOrDefault(uri, Namespace.NO_NAMESPACE));
    }
}