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//---PACKAGE DECLARATION--- |
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package uk.ac.ukc.iscream.xml; |
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package uk.ac.ukc.iscream.util; |
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//---IMPORTS--- |
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import java.io.*; |
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import javax.xml.parsers.ParserConfigurationException; |
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import javax.xml.parsers.SAXParser; |
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import uk.ac.ukc.iscream.core.*; |
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import uk.ac.ukc.iscream.refman.*; |
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/** |
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* XMLPacketMaker - Creates an XMLPacket object. |
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* |
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//---CONSTRUCTORS--- |
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// Constructor for accepting XML input. |
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/** |
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* Constructor for accepting XML input. |
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* |
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* @param xml A String of XML to process. |
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*/ |
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public XMLPacketMaker (String xml) { |
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_xml = xml; |
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} |
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//---PUBLIC METHODS--- |
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public XMLPacket createXMLPacket() { |
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/** |
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* Method to create an XML packet from the data this |
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* class was constructed with. |
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* |
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* @return an XMLPacket representing the XML String given |
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* @throws InvalidXMLException if the XML cannot be parsed |
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*/ |
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public XMLPacket createXMLPacket() throws InvalidXMLException { |
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// Create the XMLPacket to store values in. |
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XMLPacket packet = new XMLPacket(); |
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// Use the default (non-validating) parser |
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SAXParserFactory factory = SAXParserFactory.newInstance(); |
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try { |
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// Parse the input |
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InputSource inputSource = new InputSource(new StringReader(_xml)); |
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SAXParser saxParser = factory.newSAXParser(); |
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saxParser.parse(inputSource, new XMLStringParser(packet)); |
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} |
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catch (Exception e) { |
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_logger.write(this.toString(), Logger.WARNING, "An invalid XML UDP packet has been detected: "+packet.printAll()); |
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return null; |
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// couldn't parse the XML for some reason |
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throw new InvalidXMLException("Could not parse the XML: "+_xml); |
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} |
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// parsed successfully, return the packet |
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return packet; |
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} |
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* Overrides the {@link java.lang.Object#toString() Object.toString()} |
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* method to provide clean logging (every class should have this). |
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* |
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* This uses the uk.ac.ukc.iscream.util.NameFormat class |
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* to format the toString() |
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* |
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* @return the name of this class and its CVS revision |
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*/ |
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public String toString() { |
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return this.getClass().getName() + "(" + REVISION.substring(11, REVISION.length() - 2) + ")"; |
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return FormatName.getName( |
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_name, |
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getClass().getName(), |
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REVISION); |
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} |
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//---PRIVATE METHODS--- |
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//---ATTRIBUTES--- |
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/** |
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* Holds the xml |
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*/ |
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String _xml; |
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Logger _logger = ReferenceManager.getInstance().getLogger(); |
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/** |
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* This is the friendly identifier of the |
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* component this class is running in. |
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* eg, a Filter may be called "filter1", |
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* If this class does not have an owning |
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* component, a name from the configuration |
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* can be placed here. This name could also |
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* be changed to null for utility classes. |
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*/ |
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private String _name = null; |
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//---STATIC ATTRIBUTES--- |
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