Examples with TargetDmlAction org.jumpmind.symmetric.io.data.transform.TargetDmlAction used on opensource projects

Example 1 with TargetDmlAction

use of org.jumpmind.symmetric.io.data.transform.TargetDmlAction in project symmetric-ds by JumpMind.

the class TransformWriter method perform.

protected boolean perform(DataContext context, TransformedData data, TransformTable transformation, Map<String, String> sourceValues, Map<String, String> oldSourceValues) throws IgnoreRowException {
    boolean persistData = false;
    try {
        DataEventType eventType = data.getSourceDmlType();
        for (TransformColumn transformColumn : transformation.getTransformColumns()) {
            if (!transformColumn.isPk()) {
                IncludeOnType includeOn = transformColumn.getIncludeOn();
                if (includeOn == IncludeOnType.ALL || (includeOn == IncludeOnType.INSERT && eventType == DataEventType.INSERT) || (includeOn == IncludeOnType.UPDATE && eventType == DataEventType.UPDATE) || (includeOn == IncludeOnType.DELETE && eventType == DataEventType.DELETE)) {
                    if (StringUtils.isBlank(transformColumn.getSourceColumnName()) || sourceValues.containsKey(transformColumn.getSourceColumnName())) {
                        try {
                            Object value = transformColumn(context, data, transformColumn, sourceValues, oldSourceValues);
                            if (value instanceof NewAndOldValue) {
                                data.put(transformColumn, ((NewAndOldValue) value).getNewValue(), oldSourceValues != null ? ((NewAndOldValue) value).getOldValue() : null, false);
                            } else if (value == null || value instanceof String) {
                                data.put(transformColumn, (String) value, null, false);
                            } else if (value instanceof List) {
                                throw new IllegalStateException(String.format("Column transform failed %s.%s. Transforms that multiply rows must be marked as part of the primary key", transformColumn.getTransformId(), transformColumn.getTargetColumnName()));
                            } else {
                                throw new IllegalStateException(String.format("Column transform failed %s.%s. It returned an unexpected type of %s", transformColumn.getTransformId(), transformColumn.getTargetColumnName(), value.getClass().getSimpleName()));
                            }
                        } catch (IgnoreColumnException e) {
                            // Do nothing. We are ignoring the column
                            if (log.isDebugEnabled()) {
                                log.debug("A transform indicated we should ignore the target column {}", transformColumn.getTargetColumnName());
                            }
                        }
                    } else {
                        if (eventType != DataEventType.DELETE) {
                            log.warn("Could not find a source column of {} for the transformation: {}", transformColumn.getSourceColumnName(), transformation.getTransformId());
                        } else {
                            log.debug("Could not find a source column of {} for the transformation: {}.  This is probably because this was a DELETE event and no old data was captured.", transformColumn.getSourceColumnName(), transformation.getTransformId());
                        }
                    }
                }
            }
        }
        // transformation
        if (data.getColumnNames().length > 0) {
            TargetDmlAction targetAction = null;
            switch(data.getTargetDmlType()) {
                case INSERT:
                    targetAction = TargetDmlAction.INS_ROW;
                    break;
                case UPDATE:
                    targetAction = transformation.evaluateTargetDmlAction(context, data);
                    break;
                case DELETE:
                    targetAction = transformation.getDeleteAction();
                    break;
                default:
                    persistData = true;
            }
            if (targetAction != null) {
                // how to handle the update/delete action on target..
                switch(targetAction) {
                    case DEL_ROW:
                        data.setTargetDmlType(DataEventType.DELETE);
                        persistData = true;
                        break;
                    case UPDATE_COL:
                    case UPD_ROW:
                        data.setTargetDmlType(DataEventType.UPDATE);
                        persistData = true;
                        break;
                    case INS_ROW:
                        data.setTargetDmlType(DataEventType.INSERT);
                        persistData = true;
                        break;
                    case NONE:
                    default:
                        if (log.isDebugEnabled()) {
                            log.debug("The {} transformation is not configured to delete row.  Not sending the delete through.", transformation.getTransformId());
                        }
                        break;
                }
            }
        }
    } catch (IgnoreRowException ex) {
        // ignore this row
        if (log.isDebugEnabled()) {
            log.debug("Transform indicated that the target row should be ignored with a target key of: {}", ArrayUtils.toString(data.getKeyValues()));
        }
    }
    return persistData;
}