#67: relations between documents (server-side)

docs-core/src/main/java/com/sismics/docs/core/dao/jpa/DocumentDao.java

@@ -184,6 +184,11 @@ public class DocumentDao {
         q.setParameter("dateNow", dateNow);
         q.executeUpdate();
         
+        q = em.createQuery("update Relation r set r.deleteDate = :dateNow where (r.fromDocumentId = :documentId or r.toDocumentId = :documentId) and r.deleteDate is not null");
+        q.setParameter("documentId", id);
+        q.setParameter("dateNow", dateNow);
+        q.executeUpdate();
+        
         // Create audit log
         AuditLogUtil.create(documentDb, AuditLogType.DELETE, userId);
     }

docs-core/src/main/java/com/sismics/docs/core/dao/jpa/RelationDao.java

@@ -0,0 +1,97 @@
+package com.sismics.docs.core.dao.jpa;
+
+import java.util.ArrayList;
+import java.util.Date;
+import java.util.List;
+import java.util.Set;
+import java.util.UUID;
+
+import javax.persistence.EntityManager;
+import javax.persistence.Query;
+
+import com.sismics.docs.core.dao.jpa.dto.RelationDto;
+import com.sismics.docs.core.model.jpa.Relation;
+import com.sismics.util.context.ThreadLocalContext;
+
+/**
+ * Relation DAO.
+ * 
+ * @author bgamard
+ */
+public class RelationDao {
+    /**
+     * Get all relations from/to a document.
+     * 
+     * @param documentId Document ID
+     * @return List of relations
+     */
+    @SuppressWarnings("unchecked")
+    public List<RelationDto> getByDocumentId(String documentId) {
+        EntityManager em = ThreadLocalContext.get().getEntityManager();
+        StringBuilder sb = new StringBuilder("select d.DOC_ID_C, d.DOC_TITLE_C ");
+        sb.append(" from T_RELATION r ");
+        sb.append(" join T_DOCUMENT d on d.DOC_ID_C = r.REL_IDDOCFROM_C and r.REL_IDDOCFROM_C != :documentId or d.DOC_ID_C = r.REL_IDDOCTO_C and r.REL_IDDOCTO_C != :documentId ");
+        sb.append(" where (r.REL_IDDOCFROM_C = :documentId or r.REL_IDDOCTO_C = :documentId) ");
+        sb.append(" and r.REL_DELETEDATE_D is null ");
+        sb.append(" order by d.DOC_TITLE_C ");
+        
+        // Perform the query
+        Query q = em.createNativeQuery(sb.toString());
+        q.setParameter("documentId", documentId);
+        List<Object[]> l = q.getResultList();
+        
+        // Assemble results
+        List<RelationDto> relationDtoList = new ArrayList<RelationDto>();
+        for (Object[] o : l) {
+            int i = 0;
+            RelationDto relationDto = new RelationDto();
+            relationDto.setId((String) o[i++]);
+            relationDto.setTitle((String) o[i++]);
+            relationDtoList.add(relationDto);
+        }
+        return relationDtoList;
+    }
+    
+    /**
+     * Update relations on a document.
+     * 
+     * @param documentId Document ID
+     * @param documentIdSet Set of document ID
+     */
+    public void updateRelationList(String documentId, Set<String> documentIdSet) {
+        EntityManager em = ThreadLocalContext.get().getEntityManager();
+        
+        // Get current relations from this document
+        Query q = em.createQuery("select r from Relation r where r.fromDocumentId = :documentId and r.deleteDate is null");
+        q.setParameter("documentId", documentId);
+        @SuppressWarnings("unchecked")
+        List<Relation> relationList = q.getResultList();
+        
+        // Deleting relations no longer there
+        for (Relation relation : relationList) {
+            if (!documentIdSet.contains(relation.getToDocumentId())) {
+                relation.setDeleteDate(new Date());
+            }
+        }
+        
+        // Adding new relations
+        for (String targetDocId : documentIdSet) {
+            boolean found = false;
+            for (Relation relation : relationList) {
+                if (relation.getToDocumentId().equals(targetDocId)) {
+                    found = true;
+                    break;
+                }
+            }
+            
+            if (!found) {
+                Relation relation = new Relation();
+                relation.setId(UUID.randomUUID().toString());
+                relation.setFromDocumentId(documentId);
+                relation.setToDocumentId(targetDocId);
+                em.persist(relation);
+            }
+        }
+    }
+}
+

docs-core/src/main/java/com/sismics/docs/core/dao/jpa/dto/RelationDto.java

@@ -0,0 +1,34 @@
+package com.sismics.docs.core.dao.jpa.dto;
+
+/**
+ * Tag DTO.
+ *
+ * @author bgamard 
+ */
+public class RelationDto {
+    /**
+     * Document ID.
+     */
+    private String id;
+    
+    /**
+     * Document title.
+     */
+    private String title;
+
+    public String getId() {
+        return id;
+    }
+
+    public void setId(String id) {
+        this.id = id;
+    }
+
+    public String getTitle() {
+        return title;
+    }
+
+    public void setTitle(String title) {
+        this.title = title;
+    }
+}

docs-core/src/main/java/com/sismics/docs/core/dao/jpa/dto/TagDto.java

@@ -26,74 +26,34 @@ public class TagDto {
      */
     private String parentId;
 
-    /**
-     * Getter of id.
-     *
-     * @return the id
-     */
     public String getId() {
         return id;
     }
 
-    /**
-     * Setter of id.
-     *
-     * @param id id
-     */
     public void setId(String id) {
         this.id = id;
     }
 
-    /**
-     * Getter of name.
-     *
-     * @return the name
-     */
     public String getName() {
         return name;
     }
 
-    /**
-     * Setter of name.
-     *
-     * @param name name
-     */
     public void setName(String name) {
         this.name = name;
     }
 
-    /**
-     * Getter of color.
-     *
-     * @return the color
-     */
     public String getColor() {
         return color;
     }
 
-    /**
-     * Setter of color.
-     *
-     * @param color color
-     */
     public void setColor(String color) {
         this.color = color;
     }
     
-    /**
-     * Getter of parentId.
-     *
-     * @return the parentId
-     */
     public String getParentId() {
         return parentId;
     }
 
-    /**
-     * Setter of parentId.
-     *
-     * @param color parentId
-     */
     public void setParentId(String parentId) {
         this.parentId = parentId;
     }