URI.java

/* Copyright 2009, 2012 predic8 GmbH, www.predic8.com

   Licensed under the Apache License, Version 2.0 (the "License");
   you may not use this file except in compliance with the License.
   You may obtain a copy of the License at

   http://www.apache.org/licenses/LICENSE-2.0

   Unless required by applicable law or agreed to in writing, software
   distributed under the License is distributed on an "AS IS" BASIS,
   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   See the License for the specific language governing permissions and
   limitations under the License. */
package com.predic8.membrane.core.http.xml;

import static com.predic8.membrane.core.util.URLParamUtil.parseQueryString;

import java.io.UnsupportedEncodingException;
import java.util.Map;

import javax.xml.stream.XMLStreamException;
import javax.xml.stream.XMLStreamReader;
import javax.xml.stream.XMLStreamWriter;

import com.predic8.membrane.core.config.AbstractXmlElement;

public class URI extends AbstractXmlElement {

	public static final String ELEMENT_NAME = "uri";

	String value;
	Port port;
	Host host;
	Path path;
	Query query;

	public URI() {}

	public URI(String uri) throws Exception {
		setValue(uri);
	}

	@Override
	protected void parseAttributes(XMLStreamReader token) throws XMLStreamException {
		value = token.getAttributeValue("", "value");
	}

	@Override
	protected void parseChildren(XMLStreamReader token, String child) throws Exception {
		if (Port.ELEMENT_NAME.equals(child)) {
			port = (Port) new Port().parse(token);
		} else if (Host.ELEMENT_NAME.equals(child)) {
			host = (Host) new Host().parse(token);
		} else if (Path.ELEMENT_NAME.equals(child)) {
			path = (Path) new Path().parse(token);
		} else if (Query.ELEMENT_NAME.equals(child)) {
			query = (Query) new Query().parse(token);
		}
	}

	@Override
	public void write(XMLStreamWriter out) throws XMLStreamException {
		out.writeStartElement(ELEMENT_NAME);
		out.writeAttribute("value", value);
		writeIfNotNull(host, out);
		writeIfNotNull(port, out);
		writeIfNotNull(path, out);
		writeIfNotNull(query, out);
		out.writeEndElement();
	}

	public void setValue(String value) throws Exception {
		this.value = value;

		java.net.URI jUri = new java.net.URI(value);

		if (jUri.getHost()!=null)
			setHost(jUri.getHost());

		if (jUri.getPort()!=-1)
			setPort(jUri.getPort());

		parsePathFromURI(jUri);
		parseQueryFromURI(jUri);
	}

	private void parseQueryFromURI(java.net.URI jUri) throws UnsupportedEncodingException {
		if (jUri.getQuery() == null) return;

		Query q = new Query();
		for (Map.Entry<String, String> e : parseQueryString(jUri.getQuery()).entrySet()) {
			q.getParams().add(new Param(e.getKey(),e.getValue()));
		}
		setQuery(q);
	}

	private void parsePathFromURI(java.net.URI jUri) {
		if (jUri.getPath() == null) return;

		Path p = new Path();
		for (String c : jUri.getPath().substring(1).split("/")) {
			p.getComponents().add(new Component(c));
		}
		setPath(p);
	}

	public int getPort() {
		return port.getValue();
	}

	public void setPort(int port) {
		this.port = new Port(port);
	}

	public String getHost() {
		return host.getValue();
	}

	public void setHost(String host) {
		this.host = new Host(host);
	}

	public Path getPath() {
		return path;
	}

	public void setPath(Path path) {
		this.path = path;
	}

	public String getValue() {
		return value;
	}

	public Query getQuery() {
		return query;
	}

	public void setQuery(Query query) {
		this.query = query;
	}

	@Override
	protected String getElementName() {
		return ELEMENT_NAME;
	}


}