org.apache.solr.handler.extraction

Class SolrContentHandler

java.lang.Object

org.xml.sax.helpers.DefaultHandler

org.apache.solr.handler.extraction.SolrContentHandler

All Implemented Interfaces:

ExtractingParams, ContentHandler, DTDHandler, EntityResolver, ErrorHandler

public class SolrContentHandler
extends DefaultHandler
implements ExtractingParams

The class responsible for handling Tika events and translating them into SolrInputDocuments. This class is not thread-safe.

User's may wish to override this class to provide their own functionality.

See Also:

SolrContentHandlerFactory, ExtractingRequestHandler, ExtractingDocumentLoader

Field Summary

Fields

Modifier and Type	Field and Description
protected boolean	captureAttribs
protected StringBuilder	catchAllBuilder
protected String	contentFieldName
protected Collection<String>	dateFormats
protected String	defaultField
protected SolrInputDocument	document
protected Map<String,StringBuilder>	fieldBuilders
protected boolean	lowerNames
protected org.apache.tika.metadata.Metadata	metadata
protected SolrParams	params
protected IndexSchema	schema
protected String	unknownFieldPrefix

Fields inherited from interface org.apache.solr.handler.extraction.ExtractingParams

BOOST_PREFIX, CAPTURE_ATTRIBUTES, CAPTURE_ELEMENTS, DEFAULT_FIELD, EXTRACT_FORMAT, EXTRACT_ONLY, IGNORE_TIKA_EXCEPTION, LITERALS_PREFIX, LOWERNAMES, MAP_PREFIX, RESOURCE_NAME, STREAM_TYPE, UNKNOWN_FIELD_PREFIX, XPATH_EXPRESSION

Constructor Summary

Constructors

Constructor and Description
SolrContentHandler(org.apache.tika.metadata.Metadata metadata, SolrParams params, IndexSchema schema)
SolrContentHandler(org.apache.tika.metadata.Metadata metadata, SolrParams params, IndexSchema schema, Collection<String> dateFormats)

Method Summary

Methods

Modifier and Type	Method and Description
protected void	addCapturedContent() Add the per field captured content to the Solr Document.
protected void	addContent() Add in the catch all content to the field.
protected void	addField(String fname, String fval, String[] vals)
protected void	addLiterals() Add in the literals to the document using the params and the ExtractingParams.LITERALS_PREFIX.
protected void	addMetadata() Add in any metadata using metadata as the source.
void	characters(char[] chars, int offset, int length)
void	endElement(String uri, String localName, String qName)
protected String	findMappedName(String name) Get the name mapping
protected float	getBoost(String name) Get the value of any boost factor for the mapped name.
SolrInputDocument	newDocument() This is called by a consumer when it is ready to deal with a new SolrInputDocument.
void	startDocument()
void	startElement(String uri, String localName, String qName, Attributes attributes)
protected String	transformValue(String val, SchemaField schFld) Can be used to transform input values based on their SchemaField This implementation only formats dates using the DateUtil.

Methods inherited from class org.xml.sax.helpers.DefaultHandler

endDocument, endPrefixMapping, error, fatalError, ignorableWhitespace, notationDecl, processingInstruction, resolveEntity, setDocumentLocator, skippedEntity, startPrefixMapping, unparsedEntityDecl, warning

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

document

protected SolrInputDocument document

dateFormats

protected Collection<String> dateFormats

metadata

protected org.apache.tika.metadata.Metadata metadata

params

protected SolrParams params

catchAllBuilder

protected StringBuilder catchAllBuilder

schema

protected IndexSchema schema

fieldBuilders

protected Map<String,StringBuilder> fieldBuilders

captureAttribs

protected boolean captureAttribs

lowerNames

protected boolean lowerNames

contentFieldName

protected String contentFieldName

unknownFieldPrefix

protected String unknownFieldPrefix

defaultField

protected String defaultField

Constructor Detail

SolrContentHandler

public SolrContentHandler(org.apache.tika.metadata.Metadata metadata,
                  SolrParams params,
                  IndexSchema schema)

SolrContentHandler

public SolrContentHandler(org.apache.tika.metadata.Metadata metadata,
                  SolrParams params,
                  IndexSchema schema,
                  Collection<String> dateFormats)

Method Detail

newDocument

public SolrInputDocument newDocument()

This is called by a consumer when it is ready to deal with a new SolrInputDocument. Overriding classes can use this hook to add in or change whatever they deem fit for the document at that time. The base implementation adds the metadata as fields, allowing for potential remapping.

Returns:

The SolrInputDocument.

See Also:

addMetadata(), addCapturedContent(), addContent(), addLiterals()

addCapturedContent

protected void addCapturedContent()

Add the per field captured content to the Solr Document. Default implementation uses the fieldBuilders info

addContent

protected void addContent()

Add in the catch all content to the field. Default impl. uses the contentFieldName and the catchAllBuilder

addLiterals

protected void addLiterals()

Add in the literals to the document using the params and the ExtractingParams.LITERALS_PREFIX.

addMetadata

protected void addMetadata()

Add in any metadata using metadata as the source.

addField

protected void addField(String fname,
            String fval,
            String[] vals)

startDocument

public void startDocument()
                   throws SAXException

Specified by:

startDocument in interface ContentHandler

Overrides:

startDocument in class DefaultHandler

Throws:

SAXException

startElement

public void startElement(String uri,
                String localName,
                String qName,
                Attributes attributes)
                  throws SAXException

Specified by:

startElement in interface ContentHandler

Overrides:

startElement in class DefaultHandler

Throws:

SAXException

endElement

public void endElement(String uri,
              String localName,
              String qName)
                throws SAXException

Specified by:

endElement in interface ContentHandler

Overrides:

endElement in class DefaultHandler

Throws:

SAXException

characters

public void characters(char[] chars,
              int offset,
              int length)
                throws SAXException

Specified by:

characters in interface ContentHandler

Overrides:

characters in class DefaultHandler

Throws:

SAXException

transformValue

protected String transformValue(String val,
                    SchemaField schFld)

Can be used to transform input values based on their SchemaField

This implementation only formats dates using the DateUtil.

Parameters:

val - The value to transform

schFld - The SchemaField

Returns:

The potentially new value.

getBoost

protected float getBoost(String name)

Get the value of any boost factor for the mapped name.

Parameters:

name - The name of the field to see if there is a boost specified

Returns:

The boost value

findMappedName

protected String findMappedName(String name)

Get the name mapping

Parameters:

name - The name to check to see if there is a mapping

Returns:

The new name, if there is one, else name