docbook/ui/DbkTextInterpreter.java

   1 package org.argeo.docbook.ui;
   2
   3 import javax.jcr.Item;
   4 import javax.jcr.Node;
   5 import javax.jcr.Property;
   6 import javax.jcr.RepositoryException;
   7
   8 import org.argeo.cms.CmsException;
   9 import org.argeo.cms.text.TextInterpreter;
  10
  11 /** Based on HTML with a few Wiki-like shortcuts. */
  12 public class DbkTextInterpreter implements TextInterpreter {
  13
  14         @Override
  15         public void write(Item item, String content) {
  16                 try {
  17                         if (item instanceof Node) {
  18                                 Node node = (Node) item;
  19                                 if (node.isNodeType(DocBookTypes.PARA)) {
  20                                         String raw = convertToStorage(node, content);
  21                                         validateBeforeStoring(raw);
  22                                         Node jcrText;
  23                                         if (!node.hasNode(DocBookNames.JCR_XMLTEXT))
  24                                                 jcrText = node.addNode(DocBookNames.JCR_XMLTEXT, DocBookTypes.XMLTEXT);
  25                                         else
  26                                                 jcrText = node.getNode(DocBookNames.JCR_XMLTEXT);
  27                                         jcrText.setProperty(DocBookNames.JCR_XMLCHARACTERS, raw);
  28                                 } else {
  29                                         throw new CmsException("Don't know how to interpret " + node);
  30                                 }
  31                         } else {// property
  32                                 Property property = (Property) item;
  33                                 property.setValue(content);
  34                         }
  35                         // item.getSession().save();
  36                 } catch (RepositoryException e) {
  37                         throw new CmsException("Cannot set content on " + item, e);
  38                 }
  39         }
  40
  41         @Override
  42         public String read(Item item) {
  43                 try {
  44                         String raw = raw(item);
  45                         return convertFromStorage(item, raw);
  46                 } catch (RepositoryException e) {
  47                         throw new CmsException("Cannot get " + item + " for edit", e);
  48                 }
  49         }
  50
  51         @Override
  52         public String raw(Item item) {
  53                 try {
  54                         item.getSession().refresh(true);
  55                         if (item instanceof Node) {
  56                                 Node node = (Node) item;
  57                                 if (node.isNodeType(DocBookTypes.PARA)) {
  58                                         Node jcrText = node.getNode(DocBookNames.JCR_XMLTEXT);
  59                                         String txt = jcrText.getProperty(DocBookNames.JCR_XMLCHARACTERS).getString();
  60                                         // TODO make it more robust
  61                                         txt = txt.replace("\n", "").replace("\t", "");
  62                                         return txt;
  63                                 } else {
  64                                         throw new CmsException("Don't know how to interpret " + node);
  65                                 }
  66                         } else {// property
  67                                 Property property = (Property) item;
  68                                 return property.getString();
  69                         }
  70                 } catch (RepositoryException e) {
  71                         throw new CmsException("Cannot get " + item + " content", e);
  72                 }
  73         }
  74
  75         // EXTENSIBILITY
  76         /**
  77          * To be overridden, in order to make sure that only valid strings are being
  78          * stored.
  79          */
  80         protected void validateBeforeStoring(String raw) {
  81         }
  82
  83         /** To be overridden, in order to support additional formatting. */
  84         protected String convertToStorage(Item item, String content) throws RepositoryException {
  85                 return content;
  86
  87         }
  88
  89         /** To be overridden, in order to support additional formatting. */
  90         protected String convertFromStorage(Item item, String content) throws RepositoryException {
  91                 return content;
  92         }
  93 }