Class UpdateRequest.UpdateMappingConsumer

java.lang.Object
org.datanucleus.store.rdbms.request.UpdateRequest.UpdateMappingConsumer
All Implemented Interfaces:
MappingConsumer
Enclosing class:
UpdateRequest
private class UpdateRequest.UpdateMappingConsumer extends Object implements MappingConsumer
Mapping Consumer used for generating the UPDATE statement for an object in a table. This statement will be of the form 
UPDATE table-name SET param1=?,param2=? WHERE id1=? AND id2=?
or (when also performing version checks) 
UPDATE table-name SET param1=?,param2=?,version={newvers} WHERE id1=? AND id2=? AND version={oldvers}

  • Field Details

    • initialized

      boolean initialized
      Flag for initialisation state of the consumer.

    • paramIndex

      int paramIndex
      Current parameter index.

    • updateFields

      List updateFields
      Numbers of all fields to be updated.

    • whereFields

      List whereFields
      Numbers of all WHERE clause fields.

    • postSetMappings

      List<JavaTypeMapping> postSetMappings
      Mappings that require post-set processing.

    • callbackMappings

      List<MappingCallbacks> callbackMappings
      Mappings that require callbacks calling.

    • columnAssignments

      StringBuilder columnAssignments
      for UPDATE statement

    • assignedColumns

      Map assignedColumns

    • where

      StringBuilder where
      Where clause for the statement. Built during the consumption process.

    • cmd

      private final org.datanucleus.metadata.AbstractClassMetaData cmd
      MetaData for the class of the object

    • whereClauseConsumption

      private boolean whereClauseConsumption

    • updateUserStatementMapping

      private StatementMappingIndex updateUserStatementMapping

    • updateTimestampStatementMapping

      private StatementMappingIndex updateTimestampStatementMapping

  • Constructor Details

    • UpdateMappingConsumer

      public UpdateMappingConsumer(org.datanucleus.metadata.AbstractClassMetaData cmd)
      Constructor
      Parameters:
      cmd - metadata for the class

  • Method Details

    • setWhereClauseConsumption

      public void setWhereClauseConsumption(boolean whereClause)

    • preConsumeMapping

      public void preConsumeMapping(int highest)
      Description copied from interface: MappingConsumer
      This method is called before consuming the mappings
      Specified by:
      preConsumeMapping in interface MappingConsumer
      Parameters:
      highest - the highest number for the fields that are going to be provided in the consumer

    • consumeMapping

      public void consumeMapping(JavaTypeMapping m, org.datanucleus.metadata.AbstractMemberMetaData mmd)
      Consumes a mapping for a field.
      Specified by:
      consumeMapping in interface MappingConsumer
      Parameters:
      m - The mapping.
      mmd - MetaData for the field

    • consumeMapping

      public void consumeMapping(JavaTypeMapping m, MappingType mappingType)
      Consumes a mapping associated to surrogate / special columns.
      Specified by:
      consumeMapping in interface MappingConsumer
      Parameters:
      m - The mapping.
      mappingType - the Mapping type

    • consumeUnmappedColumn

      public void consumeUnmappedColumn(Column col)
      Consumer a column without mapping.
      Specified by:
      consumeUnmappedColumn in interface MappingConsumer
      Parameters:
      col - Column

    • getUpdateUserStatementMapping

      public StatementMappingIndex getUpdateUserStatementMapping()

    • getUpdateTimestampStatementMapping

      public StatementMappingIndex getUpdateTimestampStatementMapping()

    • getPostSetMappings

      public List<JavaTypeMapping> getPostSetMappings()

    • getMappingCallbacks

      public List<MappingCallbacks> getMappingCallbacks()

    • getUpdateFieldNumbers

      public int[] getUpdateFieldNumbers()
      Accessor for the numbers of fields to be updated (excluding PK fields).
      Returns:
      array of absolute field numbers

    • getWhereFieldNumbers

      public int[] getWhereFieldNumbers()
      Accessor for the numbers of fields in the WHERE clause.
      Returns:
      array of absolute WHERE clause field numbers

    • getStatement

      public String getStatement()
      Accessor for the basic update SQL statement. 
      UPDATE TABLE SET COL1 = ?, COL2 = ? WHERE COL3 = ? AND COL4 = ?
      Returns:
      The update SQL statement