Examples of org.jboss.ejb.plugins.cmp.jdbc.bridge.JDBCCMPFieldBridge

Package org.jboss.ejb.plugins.cmp.jdbc.bridge

Examples of org.jboss.ejb.plugins.cmp.jdbc.bridge.JDBCCMPFieldBridge

org.jboss.ejb.plugins.cmp.jdbc.bridge.JDBCCMPFieldBridge
JDBCCMPFieldBridge represents one CMP field. This implementations of this interface handles setting are responsible for setting statement parameters and loading results for instance values and primary keys. Life-cycle: Tied to the EntityBridge. Multiplicity: One for each entity bean cmp field. @author Dain Sundstrom @author Alex Loubyansky @version $Revision: 81030 $

         path = (ASTPath) child0;


         if(path.isCMPField())
         {
            // set the select object
            JDBCCMPFieldBridge selectField = (JDBCCMPFieldBridge) path.getCMPField();
            selectManager = (JDBCStoreManager) selectField.getManager();
            selectObject = selectField;
            setTypeFactory(selectManager.getJDBCTypeFactory());
            addJoinPath(path);
            selectAlias = aliasManager.getAlias(path.getPath(path.size() - 2));
            SQLUtil.getColumnNamesClause(selectField, selectAlias, buf);
         }
         else
         {
            // set the select object
            JDBCEntityBridge selectEntity = (JDBCEntityBridge) path.getEntity();
            selectManager = (JDBCStoreManager) selectEntity.getManager();
            selectObject = selectEntity;
            setTypeFactory(selectManager.getJDBCTypeFactory());
            selectEntity(path, node.distinct, buf);
         }
      }
      else
      {
         // the function should take a path expresion as a parameter
         path = getPathFromChildren(child0);


         if(path == null)
         {
            throw new IllegalStateException("The function in SELECT clause does not contain a path expression.");
         }


         if(path.isCMPField())
         {
            JDBCCMPFieldBridge selectField = (JDBCCMPFieldBridge) path.getCMPField();
            selectManager = (JDBCStoreManager) selectField.getManager();
            if(selectField.getJDBCType().hasMapper())
               this.functionJDBCType = selectField.getJDBCType();
         }
         else if(path.isCMRField())
         {
            JDBCCMRFieldBridge cmrField = (JDBCCMRFieldBridge) path.getCMRField();
            selectManager = (JDBCStoreManager) cmrField.getEntity().getManager();

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      // setup the from path
      ASTPath fromPath = (ASTPath) node.jjtGetChild(0);
      addJoinPath(fromPath);
      String fromAlias = aliasManager.getAlias(fromPath.getPath(fromPath.size() - 2));
      JDBCCMPFieldBridge fromCMPField = (JDBCCMPFieldBridge) fromPath.getCMPField();


      Node toNode = node.jjtGetChild(1);
      if(toNode instanceof ASTParameter)
      {
         ASTParameter toParam = (ASTParameter) toNode;


         // can only compare like kind entities
         Class parameterType = getParameterType(toParam.number);
         if(!(fromCMPField.getFieldType().equals(parameterType)))
         {
            throw new IllegalStateException("Only like types can be " +
               "compared: from CMP field=" +
               fromCMPField.getFieldType() +
               " to parameter=" + parameterType);
         }


         inputParameters.addAll(QueryParameter.createParameters(toParam.number - 1, fromCMPField));
         SQLUtil.getWhereClause(fromCMPField.getJDBCType(), fromAlias, comparison, buf);
      }
      else
      {
         ASTPath toPath = (ASTPath) toNode;
         addJoinPath(toPath);
         String toAlias = aliasManager.getAlias(toPath.getPath(toPath.size() - 2));
         JDBCCMPFieldBridge toCMPField = (JDBCCMPFieldBridge) toPath.getCMPField();


         // can only compare like kind entities
         if(!(fromCMPField.getFieldType().equals(toCMPField.getFieldType())))
         {
            throw new IllegalStateException("Only like types can be " +
               "compared: from CMP field=" +
               fromCMPField.getFieldType() +
               " to CMP field=" + toCMPField.getFieldType());
         }


         SQLUtil.getSelfCompareWhereClause(fromCMPField, toCMPField, fromAlias, toAlias, comparison, buf);
      }

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      {
         throw new IllegalStateException("Can only visit cmp valued path " +
            "node. Should have been handled at a higher level.");
      }


      JDBCCMPFieldBridge cmpField = (JDBCCMPFieldBridge) node.getCMPField();


      // make sure this is mapped to a single column
      switch(node.type)
      {
         case EJBQLTypes.ENTITY_TYPE:
         case EJBQLTypes.VALUE_CLASS_TYPE:
            if(cmpField.getJDBCType().hasMapper() ||
               cmpField.getJDBCType().getParameterSetter() != null)
            {
               break;
            }
         case EJBQLTypes.UNKNOWN_TYPE:
            throw new IllegalStateException("Can not visit multi-column path " +

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      else
      {
         ASTPath toPath = (ASTPath) toNode;
         addInnerJoinPath(toPath);
         String toAlias = aliasManager.getAlias(toPath.getPath(toPath.size() - 2));
         JDBCCMPFieldBridge toCMPField = (JDBCCMPFieldBridge) toPath.getCMPField();


         // can only compare like kind entities
         if(!(fromCMPField.getFieldType().equals(toCMPField.getFieldType())))
         {
            throw new IllegalStateException("Only like types can be " +
               "compared: from CMP field=" +
               fromCMPField.getFieldType() +
               " to CMP field=" + toCMPField.getFieldType());
         }


         SQLUtil.getSelfCompareWhereClause(fromCMPField, toCMPField, fromAlias, toAlias, comparison, buf);
      }

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            value = null;
         }


         if(field instanceof JDBCCMPFieldBridge)
         {
            JDBCCMPFieldBridge cmpField = (JDBCCMPFieldBridge) field;


            if(!cmpField.isLoaded(ctx))
            {
               if(log.isTraceEnabled())
               {
                  log.trace("Preloading data:" +
                     " entity=" + manager.getEntityBridge().getEntityName() +
                     " pk=" + ctx.getId() +
                     " cmpField=" + cmpField.getFieldName());
               }


               // set the value
               cmpField.setInstanceValue(ctx, value);


               // mark this field clean as it's value was just loaded
               cmpField.setClean(ctx);


               loaded = true;
            }
            else
            {
               if(log.isTraceEnabled())
               {
                  log.trace("CMPField already loaded:" +
                     " entity=" + manager.getEntityBridge().getEntityName() +
                     " pk=" + ctx.getId() +
                     " cmpField=" + cmpField.getFieldName());
               }
            }
         }
         else if(field instanceof JDBCCMRFieldBridge)
         {

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      // setup the from path
      ASTPath fromPath = (ASTPath) node.jjtGetChild(0);
      addJoinPath(fromPath);
      String fromAlias = aliasManager.getAlias(fromPath.getPath(fromPath.size() - 2));
      JDBCCMPFieldBridge fromCMPField = (JDBCCMPFieldBridge) fromPath.getCMPField();


      Node toNode = node.jjtGetChild(1);
      if(toNode instanceof ASTParameter)
      {
         ASTParameter toParam = (ASTParameter) toNode;


         // can only compare like kind entities
         Class parameterType = getParameterType(toParam.number);
         if(!(fromCMPField.getFieldType().equals(parameterType)))
         {
            throw new IllegalStateException("Only like types can be " +
               "compared: from CMP field=" +
               fromCMPField.getFieldType() +
               " to parameter=" + parameterType);
         }


         inputParameters.addAll(QueryParameter.createParameters(toParam.number - 1, fromCMPField));
         SQLUtil.getWhereClause(fromCMPField.getJDBCType(), fromAlias, comparison, buf);
      }
      else
      {
         ASTPath toPath = (ASTPath) toNode;
         addJoinPath(toPath);
         String toAlias = aliasManager.getAlias(toPath.getPath(toPath.size() - 2));
         JDBCCMPFieldBridge toCMPField = (JDBCCMPFieldBridge) toPath.getCMPField();


         // can only compare like kind entities
         if(!(fromCMPField.getFieldType().equals(toCMPField.getFieldType())))
         {
            throw new IllegalStateException("Only like types can be " +
               "compared: from CMP field=" +
               fromCMPField.getFieldType() +
               " to CMP field=" + toCMPField.getFieldType());
         }


         SQLUtil.getSelfCompareWhereClause(fromCMPField, toCMPField, fromAlias, toAlias, comparison, buf);
      }

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      {
         throw new IllegalStateException("Can only visit cmp valued path " +
            "node. Should have been handled at a higher level.");
      }


      JDBCCMPFieldBridge cmpField = (JDBCCMPFieldBridge) node.getCMPField();


      // make sure this is mapped to a single column
      switch(node.type)
      {
         case EJBQLTypes.ENTITY_TYPE:
         case EJBQLTypes.VALUE_CLASS_TYPE:
            if(cmpField.getJDBCType().hasMapper() ||
               cmpField.getJDBCType().getParameterSetter() != null)
            {
               break;
            }
         case EJBQLTypes.UNKNOWN_TYPE:
            throw new IllegalStateException("Can not visit multi-column path " +

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         path = (ASTPath) child0;


         if(path.isCMPField())
         {
            // set the select object
            JDBCCMPFieldBridge selectField = (JDBCCMPFieldBridge) path.getCMPField();
            selectManager = (JDBCStoreManager) selectField.getManager();
            selectObject = selectField;
            setTypeFactory(selectManager.getJDBCTypeFactory());


            addJoinPath(path);
            selectAlias = aliasManager.getAlias(path.getPath(path.size() - 2));
            SQLUtil.getColumnNamesClause(selectField, selectAlias, buf);
         }
         else
         {
            // set the select object
            JDBCEntityBridge selectEntity = (JDBCEntityBridge) path.getEntity();
            selectManager = (JDBCStoreManager) selectEntity.getManager();
            selectObject = selectEntity;
            setTypeFactory(selectManager.getJDBCTypeFactory());
            selectEntity(path, node.distinct, buf);
         }
      }
      else
      {
         // the function should take a path expresion as a parameter
         path = getPathFromChildren(child0);


         if(path == null)
         {
            throw new IllegalStateException("The function in SELECT clause does not contain a path expression.");
         }


         if(path.isCMPField())
         {
            JDBCCMPFieldBridge selectField = (JDBCCMPFieldBridge) path.getCMPField();
            selectManager = (JDBCStoreManager) selectField.getManager();
         }
         else if(path.isCMRField())
         {
            JDBCCMRFieldBridge cmrField = (JDBCCMRFieldBridge) path.getCMRField();
            selectManager = (JDBCStoreManager) cmrField.getEntity().getManager();

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      {
         lockedIterator = entity.getLockedIterator(ctx);
         while(lockedIterator.hasNext())
         {
            sql.append(SQLUtil.AND);
            JDBCCMPFieldBridge field = lockedIterator.next();
            if(field.getLockedValue(ctx) == null)
            {
               SQLUtil.getIsNullClause(false, field, "", sql);
               lockedIterator.remove();
            }
            else
            {
               SQLUtil.getWhereClause(field, sql);
            }
         }
      }


      Connection con = null;
      PreparedStatement ps = null;
      int rowsAffected = 0;
      try
      {
         // create the statement
         if(log.isDebugEnabled())
         {
            log.debug("Executing SQL: " + sql);
         }


         // get the connection
         con = entity.getDataSource().getConnection();
         ps = con.prepareStatement(sql.toString());


         // SET: set the dirty fields parameters
         int index = 1;
         dirtyIterator.reset();
         while(dirtyIterator.hasNext())
         {
            index = dirtyIterator.next().setInstanceParameters(ps, index, ctx);
         }


         // WHERE: set primary key fields
         index = entity.setPrimaryKeyParameters(ps, index, ctx.getId());


         // WHERE: set optimistically locked field values
         if(hasLockedFields)
         {
            lockedIterator.reset();
            while(lockedIterator.hasNext())
            {
               JDBCCMPFieldBridge field = lockedIterator.next();
               Object value = field.getLockedValue(ctx);
               index = field.setArgumentParameters(ps, index, value);
            }
         }


         // execute statement
         rowsAffected = ps.executeUpdate();

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      int offset = toInt(parameters, compiler.getOffsetParam(), compiler.getOffsetValue());
      int limit = toInt(parameters, compiler.getLimitParam(), compiler.getLimitValue());


      JDBCEntityBridge selectEntity = null;
      JDBCCMPFieldBridge selectField = null;
      SelectFunction selectFunction = null;
      if(compiler.isSelectEntity())
      {
         selectEntity = (JDBCEntityBridge) compiler.getSelectEntity();
      }

View Full Code Here

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