server/runtime/org.argeo.server.core/src/main/java/org/argeo/server/dao/AbstractTabularDaoSupport.java

   1 package org.argeo.server.dao;
   2
   3 import java.util.ArrayList;
   4 import java.util.HashMap;
   5 import java.util.List;
   6 import java.util.Map;
   7
   8 import org.apache.commons.logging.Log;
   9 import org.apache.commons.logging.LogFactory;
  10 import org.argeo.ArgeoException;
  11
  12 public abstract class AbstractTabularDaoSupport extends
  13                 AbstractMemoryDaoSupport {
  14         private final static Log log = LogFactory
  15                         .getLog(AbstractTabularDaoSupport.class);
  16
  17         private Map<String, List<Object>> tabularView = new HashMap<String, List<Object>>();
  18
  19         @Override
  20         protected Object findInternalRef(Reference reference) {
  21                 TabularInternalReference tabReference = (TabularInternalReference) reference;
  22                 return getFromTabularView(tabReference.getTargetTableName(),
  23                                 tabReference.getTargetRow());
  24         }
  25
  26         protected Object getFromTabularView(String tableName, Integer row) {
  27                 return tabularView.get(tableName).get(row - 2);
  28         }
  29
  30         protected void registerInTabularView(String tableName, Object object) {
  31                 if (!tabularView.containsKey(tableName))
  32                         tabularView.put(tableName, new ArrayList<Object>());
  33                 tabularView.get(tableName).add(object);
  34         }
  35
  36         protected Class<?> findClassToInstantiate(String tableName) {
  37                 // TODO: ability to map sheet names and class names
  38                 String className = tableName;
  39                 Class<?> clss = null;
  40                 try {
  41                         clss = getClassLoader().loadClass(className);
  42                         return clss;
  43                 } catch (ClassNotFoundException e) {
  44                         // silent
  45                 }
  46
  47                 scannedPkgs: for (String pkg : getScannedPackages()) {
  48                         try {
  49                                 clss = getClassLoader().loadClass(pkg.trim() + "." + className);
  50                                 break scannedPkgs;
  51                         } catch (ClassNotFoundException e) {
  52                                 // silent
  53                                 if (log.isTraceEnabled())
  54                                         log.trace(e.getMessage());
  55                         }
  56                 }
  57
  58                 if (clss == null)
  59                         throw new ArgeoException("Cannot find a class for table "
  60                                         + tableName);
  61
  62                 return clss;
  63         }
  64
  65         protected static class TabularInternalReference extends Reference {
  66                 private String targetTableName;
  67                 private Integer targetRow;
  68
  69                 public TabularInternalReference(Object object, String property,
  70                                 String targetSheet, Integer targetRow) {
  71                         super(object, property, null);
  72                         this.targetTableName = targetSheet;
  73                         this.targetRow = targetRow;
  74                 }
  75
  76                 public String getTargetTableName() {
  77                         return targetTableName;
  78                 }
  79
  80                 public Integer getTargetRow() {
  81                         return targetRow;
  82                 }
  83
  84         }
  85 }