/*
* Copyright (c) 2014, WSO2 Inc. (http://www.wso2.org) All Rights Reserved.
*
* WSO2 Inc. licenses this file to you 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.wso2.carbon.mediator.foreach;
import org.apache.axiom.om.OMAttribute;
import org.apache.axiom.om.OMElement;
import org.apache.synapse.config.xml.SynapseXPathFactory;
import org.apache.synapse.config.xml.SynapseXPathSerializer;
import org.apache.synapse.config.xml.XMLConfigConstants;
import org.apache.synapse.util.xpath.SynapseXPath;
import org.jaxen.JaxenException;
import org.wso2.carbon.mediator.service.MediatorException;
import org.wso2.carbon.mediator.service.ui.AbstractListMediator;
import org.wso2.carbon.mediator.service.ui.Mediator;
import javax.xml.namespace.QName;
import java.util.List;
public class ForEachMediator extends AbstractListMediator {
private SynapseXPath expression = null;
private String sequenceRef = null;
private String id = null;
private final String TAG_NAME = "foreach";
public ForEachMediator() {
}
public String getTagLocalName() {
return TAG_NAME;
}
public SynapseXPath getExpression() {
return expression;
}
public void setExpression(SynapseXPath expression) {
this.expression = expression;
}
public String getSequenceRef() {
return sequenceRef;
}
public void setSequenceRef(String sequenceRef) {
this.sequenceRef = sequenceRef;
}
public OMElement serialize(OMElement parent) {
OMElement forEachElem = fac.createOMElement(TAG_NAME, synNS);
saveTracingState(forEachElem, this);
if (expression != null) {
SynapseXPathSerializer.serializeXPath(expression, forEachElem, "expression");
} else {
throw new MediatorException("Missing expression of the ForEach which is required.");
}
if (id != null) {
forEachElem.addAttribute("id", id, nullNS);
}
if (sequenceRef != null) {
forEachElem.addAttribute("sequence", sequenceRef, nullNS);
} else if (getList() != null && getList().size() > 0) {
List<Mediator> list = getList();
org.wso2.carbon.mediator.service.builtin.SequenceMediator
seq = new org.wso2.carbon.mediator.service.builtin.SequenceMediator();
seq.setAnonymous(true);
for (Mediator m : list) {
seq.addChild(m);
}
seq.serialize(forEachElem);
}
if (parent != null) {
parent.addChild(forEachElem);
}
return forEachElem;
}
public void build(OMElement elem) {
processAuditStatus(this, elem);
this.getList().clear();
sequenceRef = null;
OMAttribute expression = elem.getAttribute(ATT_EXPRN);
if (expression != null) {
try {
this.expression = SynapseXPathFactory.getSynapseXPath(elem, ATT_EXPRN);
} catch (JaxenException e) {
throw new MediatorException("Unable to build the ForEach Mediator. " +
"Invalid XPath " +
expression.getAttributeValue());
}
} else {
throw new MediatorException(
"XPath expression is required "
+ "for a ForEach Mediator under the \"expression\" attribute");
}
OMAttribute idAttr = elem.getAttribute(
new QName(XMLConfigConstants.NULL_NAMESPACE, "id"));
if (idAttr != null) {
this.id = idAttr.getAttributeValue();
}
OMAttribute sequenceAttr = elem.getAttribute(
new QName(XMLConfigConstants.NULL_NAMESPACE, "sequence"));
OMElement sequence;
if (sequenceAttr != null && sequenceAttr.getAttributeValue() != null) {
sequenceRef = sequenceAttr.getAttributeValue();
} else if ((sequence = elem.getFirstChildWithName(
new QName(XMLConfigConstants.SYNAPSE_NAMESPACE, "sequence"))) != null) {
org.wso2.carbon.mediator.service.builtin.SequenceMediator
seq = new org.wso2.carbon.mediator.service.builtin.SequenceMediator();
seq.setAnonymous(true);
seq.build(sequence);
if (seq.getList() != null && seq.getList().size() > 0) {
for (Mediator m : seq.getList()) {
this.addChild(m);
}
}
}
}
public String getId() {
return id;
}
public void setId(String id) {
this.id = id;
}
}