Mercurial > hg > digilib-old
annotate servlet/src/digilib/io/DigilibInfoReader.java @ 569:1f666c2b4578
Merge with PDF branch
8beefd1142b28ca9b2433205e7eea82a517bb215
| author | robcast |
|---|---|
| date | Tue, 21 Dec 2010 09:52:16 +0100 |
| parents | 0885f5ca5b24 |
| children |
| rev | line source |
|---|---|
| 557 | 1 package digilib.io; |
| 509 | 2 |
| 3 /** DigilibInfoReader | |
| 4 * A class for reading the information from info.xml files used in digilib image directories. | |
| 5 * | |
| 6 */ | |
| 7 | |
| 8 import java.io.File; | |
| 9 import java.util.List; | |
| 10 | |
| 11 import org.apache.log4j.Logger; | |
| 529 | 12 import org.jdom.Document; |
| 13 import org.jdom.Element; | |
| 14 import org.jdom.input.SAXBuilder; | |
| 509 | 15 |
| 16 | |
| 17 | |
| 18 public class DigilibInfoReader { | |
| 19 | |
| 20 /** gengeral logger for this class */ | |
| 21 protected static Logger logger = Logger.getLogger("digilib.servlet"); | |
| 22 | |
| 23 private String filename = null; | |
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24 //private static String base_element = "info"; |
| 509 | 25 |
| 26 public DigilibInfoReader(String fn){ | |
| 27 filename = fn; | |
| 28 } | |
| 29 | |
| 511 | 30 /** |
| 31 * Returns the attribute defined by 'attr' as a String. | |
| 32 * | |
| 33 * @param attr | |
| 34 * @return | |
| 35 */ | |
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36 @SuppressWarnings("unchecked") // Element.getChildren() returns naked List |
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37 public String getAsString(String attr){ |
| 509 | 38 try{ |
| 39 SAXBuilder builder = new SAXBuilder(); | |
| 40 Document doc = builder.build(new File(filename)); | |
| 41 Element root = doc.getRootElement(); | |
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42 List<Element> mainElements = root.getChildren(); |
| 511 | 43 // logger.debug("XML mainElements:"+mainElements.toString()); |
| 509 | 44 |
| 45 for(int i=0; i<mainElements.size(); i++){ | |
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46 Element elem = mainElements.get(i); |
| 509 | 47 if(elem.getName()==attr){ |
| 511 | 48 // logger.debug(attr+" == "+(String)elem.getTextTrim()); |
| 509 | 49 return (String)elem.getTextTrim(); |
| 50 } | |
| 51 } | |
| 52 | |
| 53 } | |
| 54 catch(Exception e){ | |
| 55 logger.error(e.getMessage()); | |
| 56 } | |
| 57 return null; | |
| 58 } | |
| 59 | |
| 511 | 60 |
| 61 /** | |
| 62 * Find out if the info.xml exists | |
| 63 * @return | |
| 64 */ | |
| 509 | 65 public boolean hasInfo(){ |
| 66 try { | |
| 67 SAXBuilder builder = new SAXBuilder(); | |
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68 builder.build(new File(filename)); |
| 509 | 69 return true; |
| 70 } | |
| 71 catch(Exception e){ | |
| 72 return false; | |
| 73 } | |
| 74 } | |
| 75 | |
| 76 } |