| 1 |
+ |
//---PACKAGE DECLARATION--- |
| 2 |
+ |
package uk.ac.ukc.iscream.util; |
| 3 |
+ |
|
| 4 |
+ |
//---IMPORTS--- |
| 5 |
|
import java.io.*; |
| 6 |
|
import java.util.ArrayList; |
| 7 |
|
|
| 8 |
|
import org.xml.sax.*; |
| 9 |
< |
|
| 9 |
> |
import org.xml.sax.helpers.*; |
| 10 |
|
import javax.xml.parsers.SAXParserFactory; |
| 11 |
|
import javax.xml.parsers.ParserConfigurationException; |
| 12 |
|
import javax.xml.parsers.SAXParser; |
| 13 |
|
|
| 14 |
< |
// Paul Mutton, pjm2@ukc.ac.uk |
| 14 |
> |
/** |
| 15 |
> |
* XMLStringParser - Used to assist in creating XMLPacket objects. |
| 16 |
> |
* |
| 17 |
> |
* @author $Author$ |
| 18 |
> |
* @version $Id$ |
| 19 |
> |
*/ |
| 20 |
> |
public class XMLStringParser extends DefaultHandler { |
| 21 |
|
|
| 22 |
< |
// XMLStringParser - Used to assist in creating XMLPacket objects. |
| 13 |
< |
public class XMLStringParser extends HandlerBase { |
| 22 |
> |
//---FINAL ATTRIBUTES--- |
| 23 |
|
|
| 24 |
< |
// No-args constructor. Generally not used. |
| 24 |
> |
/** |
| 25 |
> |
* The current CVS revision of this class |
| 26 |
> |
*/ |
| 27 |
> |
public final String REVISION = "$Revision$"; |
| 28 |
> |
|
| 29 |
> |
//---STATIC METHODS--- |
| 30 |
> |
|
| 31 |
> |
//---CONSTRUCTORS--- |
| 32 |
> |
|
| 33 |
> |
/** |
| 34 |
> |
* No-args constructor. Generally not used. |
| 35 |
> |
*/ |
| 36 |
|
public XMLStringParser () { |
| 37 |
|
this.packet = new XMLPacket(); |
| 38 |
|
} |
| 39 |
|
|
| 40 |
< |
// Constructor for accepting a reference to an XMLPacket |
| 40 |
> |
/** |
| 41 |
> |
* Constructor for accepting a reference to an XMLPacket |
| 42 |
> |
*/ |
| 43 |
|
public XMLStringParser (XMLPacket packet) { |
| 44 |
|
this.packet = packet; |
| 45 |
|
} |
| 46 |
|
|
| 47 |
< |
// Accessor to the XMLPacket. |
| 47 |
> |
//---PUBLIC METHODS--- |
| 48 |
> |
|
| 49 |
> |
/** |
| 50 |
> |
* Accessor to the XMLPacket. |
| 51 |
> |
*/ |
| 52 |
|
public XMLPacket getXMLPacket() { |
| 53 |
|
return packet; |
| 54 |
|
} |
| 55 |
|
|
| 30 |
– |
private int indentLevel = 0; |
| 31 |
– |
private ArrayList tagList = new ArrayList(); |
| 32 |
– |
private XMLPacket packet; |
| 33 |
– |
|
| 56 |
|
//=========================================================== |
| 57 |
|
// SAX DocumentHandler methods |
| 58 |
|
//=========================================================== |
| 65 |
|
//System.out.println("XMLPacketParser - I just finished parsing an XML String."); |
| 66 |
|
} |
| 67 |
|
|
| 68 |
< |
// Add each tag's attribute to the XMLPacket. |
| 69 |
< |
// Note that all attributes within an opening tag are |
| 70 |
< |
// stored as "someroot.sometag.attributes.attribute_name" |
| 71 |
< |
// E.g. If <packet> is the root node, then: |
| 72 |
< |
// <packet machine_name="raptor"> |
| 73 |
< |
// is stored as: |
| 74 |
< |
// "packet.attributes.machine_name" |
| 75 |
< |
// within the XMLPacket. |
| 76 |
< |
public void startElement (String name, AttributeList attrs) throws SAXException { |
| 68 |
> |
/** Add each tag's attribute to the XMLPacket. |
| 69 |
> |
* Note that all attributes within an opening tag are |
| 70 |
> |
* stored as "someroot.sometag.attributes.attribute_name" |
| 71 |
> |
* E.g. If <packet> is the root node, then: |
| 72 |
> |
* <packet machine_name="raptor"> |
| 73 |
> |
* is stored as: |
| 74 |
> |
* "packet.attributes.machine_name" |
| 75 |
> |
* within the XMLPacket. |
| 76 |
> |
*/ |
| 77 |
> |
public void startElement (String name, Attributes attrs) throws SAXException { |
| 78 |
|
indentLevel++; |
| 79 |
|
tagList.add(name); |
| 80 |
|
if (attrs != null) { |
| 81 |
|
for (int i = 0; i < attrs.getLength (); i++) { |
| 82 |
< |
packet.addParam(getPath()+".attributes."+attrs.getName(i), attrs.getValue(i)); |
| 82 |
> |
packet.addParam(getPath()+".attributes."+attrs.getLocalName(i), attrs.getValue(i)); |
| 83 |
|
} |
| 84 |
|
} |
| 85 |
|
} |
| 86 |
|
|
| 87 |
< |
// When an XML element is finished with, we must remove |
| 88 |
< |
// the tag name from the tagList and decrement the indent |
| 89 |
< |
// level. |
| 87 |
> |
/** |
| 88 |
> |
* When an XML element is finished with, we must remove |
| 89 |
> |
* the tag name from the tagList and decrement the indent |
| 90 |
> |
* level. |
| 91 |
> |
*/ |
| 92 |
|
public void endElement (String name) throws SAXException { |
| 93 |
|
tagList.remove(tagList.size()-1); |
| 94 |
|
indentLevel--; |
| 95 |
|
} |
| 96 |
|
|
| 97 |
< |
// Any text falling within a pair of terminal tags must |
| 98 |
< |
// be added to the XMLPacket. Trim leading and trailing |
| 99 |
< |
// spaces and do not bother to add if there is no data |
| 100 |
< |
// specified within the tags. |
| 97 |
> |
/** |
| 98 |
> |
* Any text falling within a pair of terminal tags must |
| 99 |
> |
* be added to the XMLPacket. Trim leading and trailing |
| 100 |
> |
* spaces and do not bother to add if there is no data |
| 101 |
> |
* specified within the tags. |
| 102 |
> |
*/ |
| 103 |
|
public void characters (char[] buf, int offset, int len) throws SAXException { |
| 104 |
|
String s = new String(buf, offset, len); |
| 105 |
< |
if (!s.trim().equals("")) { |
| 79 |
< |
packet.addParam(getPath(), s); |
| 80 |
< |
} |
| 105 |
> |
packet.addParam(getPath(), s); |
| 106 |
|
} |
| 107 |
|
|
| 108 |
+ |
/** |
| 109 |
+ |
* Overrides the {@link java.lang.Object#toString() Object.toString()} |
| 110 |
+ |
* method to provide clean logging (every class should have this). |
| 111 |
+ |
* |
| 112 |
+ |
* This uses the uk.ac.ukc.iscream.util.NameFormat class |
| 113 |
+ |
* to format the toString() |
| 114 |
+ |
* |
| 115 |
+ |
* @return the name of this class and its CVS revision |
| 116 |
+ |
*/ |
| 117 |
+ |
public String toString() { |
| 118 |
+ |
return FormatName.getName( |
| 119 |
+ |
_name, |
| 120 |
+ |
getClass().getName(), |
| 121 |
+ |
REVISION); |
| 122 |
+ |
} |
| 123 |
|
|
| 124 |
+ |
//---PRIVATE METHODS--- |
| 125 |
+ |
|
| 126 |
|
//=========================================================== |
| 127 |
|
// Helpers ... |
| 128 |
|
//=========================================================== |
| 129 |
|
|
| 130 |
< |
|
| 131 |
< |
// Return the heirarchical string to be used as a key value |
| 132 |
< |
// in the XMLPacket. |
| 130 |
> |
/** |
| 131 |
> |
* Return the heirarchical string to be used as a key value |
| 132 |
> |
* in the XMLPacket. |
| 133 |
> |
*/ |
| 134 |
|
private String getPath () { |
| 135 |
|
String path = (String)tagList.get(0); |
| 136 |
|
if (tagList.size() > 0) { |
| 140 |
|
} |
| 141 |
|
return path; |
| 142 |
|
} |
| 143 |
+ |
|
| 144 |
+ |
//---ACCESSOR/MUTATOR METHODS--- |
| 145 |
+ |
|
| 146 |
+ |
//---ATTRIBUTES--- |
| 147 |
+ |
|
| 148 |
+ |
/** |
| 149 |
+ |
* To keep track of our identation level |
| 150 |
+ |
*/ |
| 151 |
+ |
private int indentLevel = 0; |
| 152 |
|
|
| 153 |
< |
} |
| 153 |
> |
/** |
| 154 |
> |
* An ArrayList of tags |
| 155 |
> |
*/ |
| 156 |
> |
private ArrayList tagList = new ArrayList(); |
| 157 |
> |
|
| 158 |
> |
/** |
| 159 |
> |
* A reference to the XMLPacket we are making |
| 160 |
> |
*/ |
| 161 |
> |
private XMLPacket packet; |
| 162 |
> |
|
| 163 |
> |
/** |
| 164 |
> |
* This is the friendly identifier of the |
| 165 |
> |
* component this class is running in. |
| 166 |
> |
* eg, a Filter may be called "filter1", |
| 167 |
> |
* If this class does not have an owning |
| 168 |
> |
* component, a name from the configuration |
| 169 |
> |
* can be placed here. This name could also |
| 170 |
> |
* be changed to null for utility classes. |
| 171 |
> |
*/ |
| 172 |
> |
private String _name = null; |
| 173 |
> |
|
| 174 |
> |
//---STATIC ATTRIBUTES--- |
| 175 |
> |
|
| 176 |
> |
} |
