Package com.norconex.importer.handler.transformer.impl

Class ForceSingleValueTransformer

java.lang.Object

com.norconex.importer.handler.transformer.impl.ForceSingleValueTransformer

All Implemented Interfaces:

Configurable<ForceSingleValueTransformerConfig>, ConfigurableDocHandler<ForceSingleValueTransformerConfig>, DocHandler

public class ForceSingleValueTransformer
extends Object
implements ConfigurableDocHandler<ForceSingleValueTransformerConfig>

Forces a metadata field to be single-value. The action can be one of the following:

Can be used both as a pre-parse or post-parse handler.

    keepFirst          Keeps the first occurrence found.
    keepLast           Keeps the first occurrence found.
    mergeWith:<sep>    Merges all occurrences, joining them with the
                       specified separator (<sep>).
 

If you do not specify any action, the default behavior is to merge all occurrences, joining values with a comma.

See Also:

• ForceSingleValueTransformer configuration reference

Field Summary

Fields inherited from interface com.norconex.commons.lang.config.Configurable

PROPERTY

Fields inherited from interface com.norconex.importer.handler.DocHandler

NAME

Constructor Summary

Constructors

Constructor	Description
ForceSingleValueTransformer()

Method Summary

Modifier and Type	Method	Description
protected boolean	canEqual(Object other)
boolean	equals(Object o)
ForceSingleValueTransformerConfig	getConfiguration()
boolean	handle(DocHandlerContext docCtx)	Perform any operations on a document.
int	hashCode()
String	toString()

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface com.norconex.importer.handler.DocHandler

close, init

Constructor Details

ForceSingleValueTransformer

public ForceSingleValueTransformer()

Method Details

handle

public boolean handle(DocHandlerContext docCtx)
               throws IOException

Description copied from interface: DocHandler

Perform any operations on a document.

Specified by:

handle in interface DocHandler

Parameters:

docCtx - the document handling context

Returns:

false to stop processing and reject a document or true to proceed to the next configured handler.

Throws:

IOException - An I/O exception of some sort has occurred

getConfiguration

public ForceSingleValueTransformerConfig getConfiguration()

Specified by:

getConfiguration in interface Configurable<ForceSingleValueTransformerConfig>

equals

public boolean equals(Object o)

Overrides:

equals in class Object

canEqual

protected boolean canEqual(Object other)

hashCode

public int hashCode()

Overrides:

hashCode in class Object

toString

public String toString()

Overrides:

toString in class Object