com.ibm.watson.discovery.v1.model

Interface NormalizationOperation.Operation

Enclosing class:

NormalizationOperation

public static interface NormalizationOperation.Operation

Identifies what type of operation to perform.

**copy** - Copies the value of the **source_field** to the **destination_field** field. If the **destination_field** already exists, then the value of the **source_field** overwrites the original value of the **destination_field**.

**move** - Renames (moves) the **source_field** to the **destination_field**. If the **destination_field** already exists, then the value of the **source_field** overwrites the original value of the **destination_field**. Rename is identical to copy, except that the **source_field** is removed after the value has been copied to the **destination_field** (it is the same as a _copy_ followed by a _remove_).

**merge** - Merges the value of the **source_field** with the value of the **destination_field**. The **destination_field** is converted into an array if it is not already an array, and the value of the **source_field** is appended to the array. This operation removes the **source_field** after the merge. If the **source_field** does not exist in the current document, then the **destination_field** is still converted into an array (if it is not an array already). This conversion ensures the type for **destination_field** is consistent across all documents.

**remove** - Deletes the **source_field** field. The **destination_field** is ignored for this operation.

**remove_nulls** - Removes all nested null (blank) field values from the ingested document. **source_field** and **destination_field** are ignored by this operation because _remove_nulls_ operates on the entire ingested document. Typically, **remove_nulls** is invoked as the last normalization operation (if it is invoked at all, it can be time-expensive).

Field Summary

Fields

Modifier and Type	Field and Description
static String	COPY copy.
static String	MERGE merge.
static String	MOVE move.
static String	REMOVE remove.
static String	REMOVE_NULLS remove_nulls.

Field Detail

COPY

static final String COPY

copy.

See Also:

Constant Field Values

MOVE

static final String MOVE

move.

See Also:

Constant Field Values

MERGE

static final String MERGE

merge.

See Also:

Constant Field Values

REMOVE

static final String REMOVE

remove.

See Also:

Constant Field Values

REMOVE_NULLS

static final String REMOVE_NULLS

remove_nulls.

See Also:

Constant Field Values