/*
*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF 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.apache.airavata.workflow.model.graph.system;
import java.util.List;
import org.apache.airavata.workflow.model.component.system.IfComponent;
import org.apache.airavata.workflow.model.component.system.SystemComponentDataPort;
import org.apache.airavata.workflow.model.graph.DataPort;
import org.apache.airavata.workflow.model.graph.Graph;
import org.apache.airavata.workflow.model.graph.GraphException;
import org.apache.airavata.workflow.model.graph.GraphSchema;
import org.xmlpull.infoset.XmlElement;
public class IfNode extends SystemNode {
private static final String XPATH_TAG_NAME = "xpath";
private String xpath;
/**
* Creates a InputNode.
*
* @param graph
*/
public IfNode(Graph graph) {
super(graph);
// Set the default to $0, which means that the input is boolean and
// xpath uses it as it is.
this.xpath = "$0";
}
/**
* Constructs an IfNode.
*
* @param nodeElement
* @throws GraphException
*/
public IfNode(XmlElement nodeElement) throws GraphException {
super(nodeElement);
}
/**
* Returns the xpath.
*
* @return The xpath
*/
public String getXPath() {
return this.xpath;
}
/**
* Sets xpath.
*
* @param xpath
* The xpath to set.
*/
public void setXPath(String xpath) {
this.xpath = xpath;
}
/**
* @see org.apache.airavata.workflow.model.graph.impl.NodeImpl#getComponent()
*/
@Override
public IfComponent getComponent() {
IfComponent component = (IfComponent) super.getComponent();
if (component == null) {
// The component is null when read from the graph XML.
component = new IfComponent();
setComponent(component);
}
return component;
}
/**
* Adds additional input port.
*/
public void addInputPort() {
IfComponent component = getComponent();
SystemComponentDataPort input = component.getInputPort();
SystemDataPort port = input.createPort();
addInputPort(port);
}
/**
* @throws GraphException
*/
public void removeInputPort() throws GraphException {
List<DataPort> inputPorts = getInputPorts();
// Remove the last one.
DataPort inputPort = inputPorts.get(inputPorts.size() - 1);
removeInputPort(inputPort);
}
@Override
protected void parseConfiguration(XmlElement configElement) {
super.parseConfiguration(configElement);
XmlElement element = configElement.element(null, XPATH_TAG_NAME);
if (element != null) {
this.xpath = element.requiredText();
}
}
@Override
protected XmlElement toXML() {
XmlElement nodeElement = super.toXML();
nodeElement.setAttributeValue(GraphSchema.NS, GraphSchema.NODE_TYPE_ATTRIBUTE, GraphSchema.NODE_TYPE_IF);
return nodeElement;
}
@Override
protected XmlElement addConfigurationElement(XmlElement nodeElement) {
XmlElement configElement = nodeElement.addElement(GraphSchema.NS, GraphSchema.NODE_CONFIG_TAG);
if (this.xpath != null) {
XmlElement element = configElement.addElement(GraphSchema.NS, XPATH_TAG_NAME);
element.addChild(this.xpath.toString());
}
return configElement;
}
}