/*
 * Copyright 2005-2014 the original author or authors.
 *
 * 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 org.springframework.ws.soap.axiom;

import javax.xml.namespace.QName;
import javax.xml.transform.Result;
import javax.xml.transform.Source;

import org.apache.axiom.om.OMDataSource;
import org.apache.axiom.om.OMElement;
import org.apache.axiom.soap.SOAPBody;
import org.apache.axiom.soap.SOAPFactory;

import org.springframework.util.Assert;
import org.springframework.ws.soap.SoapBody;
import org.springframework.ws.soap.axiom.support.AxiomUtils;
import org.springframework.ws.stream.StreamingPayload;

/**
 * Axiom-specific version of {@code org.springframework.ws.soap.Soap11Body}.
 *
 * @author Arjen Poutsma
 * @since 1.0.0
 */
abstract class AxiomSoapBody extends AxiomSoapElement implements SoapBody {

	private final Payload payload;

	protected AxiomSoapBody(SOAPBody axiomBody, SOAPFactory axiomFactory, boolean payloadCaching) {
		super(axiomBody, axiomFactory);
		if (payloadCaching) {
			payload = new CachingPayload(axiomBody, axiomFactory);
		}
		else {
			payload = new NonCachingPayload(axiomBody, axiomFactory);
		}
	}

	@Override
	public Source getPayloadSource() {
		return payload.getSource();
	}

	@Override
	public Result getPayloadResult() {
		return payload.getResult();
	}

	@Override
	public boolean hasFault() {
		return getAxiomBody().hasFault();
	}

	protected final SOAPBody getAxiomBody() {
		return (SOAPBody) getAxiomElement();
	}

	public void setStreamingPayload(StreamingPayload payload) {
		Assert.notNull(payload, "'payload' must not be null");
		OMDataSource dataSource = new StreamingOMDataSource(payload);
		SOAPFactory factory = getAxiomFactory();
		QName name = payload.getName();
		// Ignore the prefix; only the namespace URI and local name are significant
		OMElement payloadElement = factory.createOMElement(dataSource, name.getLocalPart(),
				factory.createOMNamespace(name.getNamespaceURI(), null));

		SOAPBody soapBody = getAxiomBody();
		AxiomUtils.removeContents(soapBody);
		soapBody.addChild(payloadElement);
	}
}