SimpleJcrNodeLabelProvider.java

   1 package org.argeo.eclipse.ui.jcr.lists;
   2
   3 import java.text.DateFormat;
   4 import java.text.DecimalFormat;
   5 import java.text.NumberFormat;
   6 import java.text.SimpleDateFormat;
   7
   8 import javax.jcr.Node;
   9 import javax.jcr.PropertyType;
  10 import javax.jcr.RepositoryException;
  11 import javax.jcr.Value;
  12
  13 import org.argeo.ArgeoException;
  14 import org.eclipse.jface.viewers.ColumnLabelProvider;
  15
  16 /**
  17  * Base implementation of a label provider for widgets that display JCR Rows.
  18  */
  19 public class SimpleJcrNodeLabelProvider extends ColumnLabelProvider {
  20         private static final long serialVersionUID = -5215787695436221993L;
  21
  22         private final static String DEFAULT_DATE_FORMAT = "EEE, dd MMM yyyy";
  23         private final static String DEFAULT_NUMBER_FORMAT = "#,##0.0";
  24
  25         private DateFormat dateFormat;
  26         private NumberFormat numberFormat;
  27
  28         final private String propertyName;
  29
  30         /**
  31          * Default Label provider for a given property of a node. Using default
  32          * pattern for date and number formating
  33          */
  34         public SimpleJcrNodeLabelProvider(String propertyName) {
  35                 this.propertyName = propertyName;
  36                 dateFormat = new SimpleDateFormat(DEFAULT_DATE_FORMAT);
  37                 numberFormat = DecimalFormat.getInstance();
  38                 ((DecimalFormat) numberFormat).applyPattern(DEFAULT_NUMBER_FORMAT);
  39         }
  40
  41         /**
  42          * Label provider for a given property of a node optionally precising date
  43          * and/or number format patterns
  44          */
  45         public SimpleJcrNodeLabelProvider(String propertyName,
  46                         String dateFormatPattern, String numberFormatPattern) {
  47                 this.propertyName = propertyName;
  48                 dateFormat = new SimpleDateFormat(
  49                                 dateFormatPattern == null ? DEFAULT_DATE_FORMAT
  50                                                 : dateFormatPattern);
  51                 numberFormat = DecimalFormat.getInstance();
  52                 ((DecimalFormat) numberFormat)
  53                                 .applyPattern(numberFormatPattern == null ? DEFAULT_NUMBER_FORMAT
  54                                                 : numberFormatPattern);
  55         }
  56
  57         @Override
  58         public String getText(Object element) {
  59                 try {
  60                         Node currNode = (Node) element;
  61
  62                         if (currNode.hasProperty(propertyName)) {
  63                                 if (currNode.getProperty(propertyName).isMultiple()) {
  64                                         StringBuilder builder = new StringBuilder();
  65                                         for (Value value : currNode.getProperty(propertyName)
  66                                                         .getValues()) {
  67                                                 String currStr = getSingleValueAsString(value);
  68                                                 if (notEmptyString(currStr))
  69                                                         builder.append(currStr).append("; ");
  70                                         }
  71                                         if (builder.length() > 0)
  72                                                 builder.deleteCharAt(builder.length() - 2);
  73
  74                                         return builder.toString();
  75                                 } else
  76                                         return getSingleValueAsString(currNode.getProperty(
  77                                                         propertyName).getValue());
  78                         } else
  79                                 return "";
  80                 } catch (RepositoryException re) {
  81                         throw new ArgeoException("Unable to get text from row", re);
  82                 }
  83         }
  84
  85         private String getSingleValueAsString(Value value)
  86                         throws RepositoryException {
  87                 switch (value.getType()) {
  88                 case PropertyType.STRING:
  89                         return value.getString();
  90                 case PropertyType.BOOLEAN:
  91                         return "" + value.getBoolean();
  92                 case PropertyType.DATE:
  93                         return dateFormat.format(value.getDate().getTime());
  94                 case PropertyType.LONG:
  95                         return "" + value.getLong();
  96                 case PropertyType.DECIMAL:
  97                         return numberFormat.format(value.getDecimal());
  98                 case PropertyType.DOUBLE:
  99                         return numberFormat.format(value.getDouble());
 100                 case PropertyType.NAME:
 101                         return value.getString();
 102                 default:
 103                         throw new ArgeoException("Unimplemented label provider "
 104                                         + "for property type " + value.getType()
 105                                         + " while getting property " + propertyName + " - value: "
 106                                         + value.getString());
 107
 108                 }
 109         }
 110
 111         private boolean notEmptyString(String string) {
 112                 return string != null && !"".equals(string.trim());
 113         }
 114
 115         public void setDateFormat(String dateFormatPattern) {
 116                 dateFormat = new SimpleDateFormat(dateFormatPattern);
 117         }
 118
 119         public void setNumberFormat(String numberFormatPattern) {
 120                 ((DecimalFormat) numberFormat).applyPattern(numberFormatPattern);
 121         }
 122 }